mirror of https://github.com/Icinga/icinga2.git
Docs: Enhance certificate and configuration troubleshooting chapter
This commit is contained in:
Michael Friedrich
parent
c2ff0becaf
commit
14cdcd89a2
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@ -391,7 +391,7 @@ are not immediately updated. Furthermore there is a known issue with
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[group assign expressions](17-language-reference.md#group-assign) which are not reflected in the host object output.
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You need to restart Icinga 2 in order to update the `icinga2.debug` cache file.
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More information can be found in the [troubleshooting](15-troubleshooting.md#list-configuration-objects) section.
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More information can be found in the [troubleshooting](15-troubleshooting.md#troubleshooting-list-configuration-objects) section.
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# icinga2 object --help
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icinga2 - The Icinga 2 network monitoring daemon (version: v2.6.0)
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@ -626,7 +626,7 @@ to read the [troubleshooting](15-troubleshooting.md#troubleshooting) chapter.
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You can also use the [CLI command](11-cli-commands.md#cli-command-object) `icinga2 object list`
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after validation passes to analyze object attributes, inheritance or created
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objects by apply rules.
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Find more on troubleshooting with `object list` in [this chapter](15-troubleshooting.md#list-configuration-objects).
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Find more on troubleshooting with `object list` in [this chapter](15-troubleshooting.md#troubleshooting-list-configuration-objects).
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Example filtered by `Service` objects with the name `ping*`:
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@ -113,15 +113,19 @@ checks later on.
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Enable the `debuglog` feature:
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# icinga2 feature enable debuglog
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# service icinga2 restart
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```
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# icinga2 feature enable debuglog
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# service icinga2 restart
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```
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The debug log file can be found in `/var/log/icinga2/debug.log`.
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Alternatively you may run Icinga 2 in the foreground with debugging enabled. Specify the console
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log severity as an additional parameter argument to `-x`.
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# /usr/sbin/icinga2 daemon -x notice
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```
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# /usr/sbin/icinga2 daemon -x notice
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```
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The [log severity](09-object-types.md#objecttype-filelogger) can be one of `critical`, `warning`, `information`, `notice`
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and `debug`.
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@ -130,15 +134,21 @@ and `debug`.
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Open a command prompt with administrative privileges and enable the debug log feature.
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C:> icinga2.exe feature enable debuglog
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```
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C:> icinga2.exe feature enable debuglog
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```
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Ensure that the Icinga 2 service already writes the main log into `C:\ProgramData\icinga2\var\log\icinga2`.
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Restart the Icinga 2 service and open the newly created `debug.log` file.
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C:> net stop icinga2
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C:> net start icinga2
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```
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C:> net stop icinga2
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C:> net start icinga2
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```
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## List Configuration Objects <a id="list-configuration-objects"></a>
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## Configuration Troubleshooting <a id="troubleshooting-configuration"></a>
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### List Configuration Objects <a id="troubleshooting-list-configuration-objects"></a>
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The `icinga2 object list` CLI command can be used to list all configuration objects and their
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attributes. The tool also shows where each of the attributes was modified.
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@ -149,74 +159,83 @@ attributes. The tool also shows where each of the attributes was modified.
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That way you can also identify which objects have been created from your [apply rules](17-language-reference.md#apply).
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# icinga2 object list
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```
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# icinga2 object list
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Object 'localhost!ssh' of type 'Service':
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* __name = 'localhost!ssh'
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* check_command = 'ssh'
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% = modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 5:3-5:23
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* check_interval = 60
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% = modified in '/etc/icinga2/conf.d/templates.conf', lines 24:3-24:21
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* host_name = 'localhost'
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% = modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 4:3-4:25
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* max_check_attempts = 3
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% = modified in '/etc/icinga2/conf.d/templates.conf', lines 23:3-23:24
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* name = 'ssh'
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* retry_interval = 30
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% = modified in '/etc/icinga2/conf.d/templates.conf', lines 25:3-25:22
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* templates = [ 'ssh', 'generic-service' ]
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% += modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 1:0-7:1
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% += modified in '/etc/icinga2/conf.d/templates.conf', lines 22:1-26:1
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* type = 'Service'
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* vars
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% += modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 6:3-6:19
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* sla = '24x7'
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% = modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 6:3-6:19
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Object 'localhost!ssh' of type 'Service':
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* __name = 'localhost!ssh'
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* check_command = 'ssh'
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% = modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 5:3-5:23
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* check_interval = 60
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% = modified in '/etc/icinga2/conf.d/templates.conf', lines 24:3-24:21
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* host_name = 'localhost'
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% = modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 4:3-4:25
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* max_check_attempts = 3
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% = modified in '/etc/icinga2/conf.d/templates.conf', lines 23:3-23:24
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* name = 'ssh'
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* retry_interval = 30
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% = modified in '/etc/icinga2/conf.d/templates.conf', lines 25:3-25:22
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* templates = [ 'ssh', 'generic-service' ]
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% += modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 1:0-7:1
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% += modified in '/etc/icinga2/conf.d/templates.conf', lines 22:1-26:1
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* type = 'Service'
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* vars
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% += modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 6:3-6:19
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* sla = '24x7'
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% = modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 6:3-6:19
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[...]
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[...]
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```
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You can also filter by name and type:
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# icinga2 object list --name *ssh* --type Service
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Object 'localhost!ssh' of type 'Service':
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* __name = 'localhost!ssh'
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* check_command = 'ssh'
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% = modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 5:3-5:23
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* check_interval = 60
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% = modified in '/etc/icinga2/conf.d/templates.conf', lines 24:3-24:21
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* host_name = 'localhost'
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% = modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 4:3-4:25
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* max_check_attempts = 3
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% = modified in '/etc/icinga2/conf.d/templates.conf', lines 23:3-23:24
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* name = 'ssh'
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* retry_interval = 30
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% = modified in '/etc/icinga2/conf.d/templates.conf', lines 25:3-25:22
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* templates = [ 'ssh', 'generic-service' ]
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% += modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 1:0-7:1
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% += modified in '/etc/icinga2/conf.d/templates.conf', lines 22:1-26:1
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* type = 'Service'
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* vars
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% += modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 6:3-6:19
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* sla = '24x7'
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% = modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 6:3-6:19
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```
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# icinga2 object list --name *ssh* --type Service
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Object 'localhost!ssh' of type 'Service':
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* __name = 'localhost!ssh'
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* check_command = 'ssh'
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% = modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 5:3-5:23
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* check_interval = 60
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% = modified in '/etc/icinga2/conf.d/templates.conf', lines 24:3-24:21
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* host_name = 'localhost'
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% = modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 4:3-4:25
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* max_check_attempts = 3
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% = modified in '/etc/icinga2/conf.d/templates.conf', lines 23:3-23:24
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* name = 'ssh'
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* retry_interval = 30
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% = modified in '/etc/icinga2/conf.d/templates.conf', lines 25:3-25:22
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* templates = [ 'ssh', 'generic-service' ]
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% += modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 1:0-7:1
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% += modified in '/etc/icinga2/conf.d/templates.conf', lines 22:1-26:1
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* type = 'Service'
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* vars
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% += modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 6:3-6:19
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* sla = '24x7'
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% = modified in '/etc/icinga2/conf.d/hosts/localhost/ssh.conf', lines 6:3-6:19
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Found 1 Service objects.
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Found 1 Service objects.
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[2014-10-15 14:27:19 +0200] information/cli: Parsed 175 objects.
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[2014-10-15 14:27:19 +0200] information/cli: Parsed 175 objects.
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```
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Runtime modifications via the [REST API](12-icinga2-api.md#icinga2-api-config-objects)
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are not immediately updated. Furthermore there is a known issue with
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[group assign expressions](17-language-reference.md#group-assign) which are not reflected in the host object output.
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You need to restart Icinga 2 in order to update the `icinga2.debug` cache file.
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### Apply rules do not match <a id="apply-rules-do-not-match"></a>
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## Where are the check command definitions? <a id="check-command-definitions"></a>
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You can analyze apply rules and matching objects by using the [script debugger](20-script-debugger.md#script-debugger).
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### Where are the check command definitions? <a id="check-command-definitions"></a>
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Icinga 2 features a number of built-in [check command definitions](10-icinga-template-library.md#icinga-template-library) which are
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included with
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include <itl>
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include <plugins>
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```
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include <itl>
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include <plugins>
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```
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in the [icinga2.conf](04-configuring-icinga-2.md#icinga2-conf) configuration file. These files are not considered configuration files and will be overridden
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on upgrade, so please send modifications as proposed patches upstream. The default include path is set to
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@ -225,7 +244,44 @@ on upgrade, so please send modifications as proposed patches upstream. The defau
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You should add your own command definitions to a new file in `conf.d/` called `commands.conf`
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or similar.
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## Checks <a id="troubleshooting-checks"></a>
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### Configuration is ignored <a id="configuration-ignored"></a>
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* Make sure that the line(s) are not [commented out](17-language-reference.md#comments) (starting with `//` or `#`, or
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encapsulated by `/* ... */`).
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* Is the configuration file included in [icinga2.conf](04-configuring-icinga-2.md#icinga2-conf)?
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Run the [configuration validation](11-cli-commands.md#config-validation) and add `notice` as log severity.
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Search for the file which should be included i.e. using the `grep` CLI command.
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```
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# icinga2 daemon -C -x notice | grep command
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```
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### Configuration attributes are inherited from <a id="configuration-attribute-inheritance"></a>
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Icinga 2 allows you to import templates using the [import](17-language-reference.md#template-imports) keyword. If these templates
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contain additional attributes, your objects will automatically inherit them. You can override
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or modify these attributes in the current object.
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The [object list](15-troubleshooting.md#troubleshooting-list-configuration-objects) CLI command allows you to verify the attribute origin.
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### Configuration Value with Single Dollar Sign <a id="configuration-value-dollar-sign"></a>
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In case your configuration validation fails with a missing closing dollar sign error message, you
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did not properly escape the single dollar sign preventing its usage as [runtime macro](03-monitoring-basics.md#runtime-macros).
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```
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critical/config: Error: Validation failed for Object 'ping4' (Type: 'Service') at /etc/icinga2/zones.d/global-templates/windows.conf:24: Closing $ not found in macro format string 'top-syntax=${list}'.
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```
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Correct the custom attribute value to
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```
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"top-syntax=$${list}"
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```
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## Checks Troubleshooting <a id="troubleshooting-checks"></a>
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### Executed Command for Checks <a id="checks-executed-command"></a>
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@ -238,53 +294,59 @@ to fetch the checkable object, its check result and the executed shell command.
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Example for a service object query using a [regex match](18-library-reference.md#global-functions-regex)
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on the name:
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$ curl -k -s -u root:icinga -H 'Accept: application/json' -H 'X-HTTP-Method-Override: GET' -X POST 'https://localhost:5665/v1/objects/services' \
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-d '{ "filter": "regex(pattern, service.name)", "filter_vars": { "pattern": "^http" }, "attrs": [ "__name", "last_check_result" ] }' | python -m json.tool
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{
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"results": [
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{
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"attrs": {
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"__name": "example.localdomain!http",
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"last_check_result": {
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"active": true,
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"check_source": "example.localdomain",
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"command": [
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"/usr/local/sbin/check_http",
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"-I",
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"127.0.0.1",
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"-u",
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"/"
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],
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```
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$ curl -k -s -u root:icinga -H 'Accept: application/json' -H 'X-HTTP-Method-Override: GET' -X POST 'https://localhost:5665/v1/objects/services' \
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-d '{ "filter": "regex(pattern, service.name)", "filter_vars": { "pattern": "^http" }, "attrs": [ "__name", "last_check_result" ] }' | python -m json.tool
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{
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"results": [
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{
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"attrs": {
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"__name": "example.localdomain!http",
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"last_check_result": {
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"active": true,
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"check_source": "example.localdomain",
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"command": [
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"/usr/local/sbin/check_http",
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"-I",
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"127.0.0.1",
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"-u",
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"/"
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],
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...
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...
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}
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},
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"joins": {},
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"meta": {},
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"name": "example.localdomain!http",
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"type": "Service"
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}
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]
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}
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}
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},
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"joins": {},
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"meta": {},
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"name": "example.localdomain!http",
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"type": "Service"
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}
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]
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}
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```
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Example for using the `icinga2 console` CLI command evaluation functionality:
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$ ICINGA2_API_PASSWORD=icinga icinga2 console --connect 'https://root@localhost:5665/' \
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--eval 'get_service("example.localdomain", "http").last_check_result.command' | python -m json.tool
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[
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"/usr/local/sbin/check_http",
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"-I",
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"127.0.0.1",
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"-u",
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"/"
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]
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```
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$ ICINGA2_API_PASSWORD=icinga icinga2 console --connect 'https://root@localhost:5665/' \
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--eval 'get_service("example.localdomain", "http").last_check_result.command' | python -m json.tool
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[
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"/usr/local/sbin/check_http",
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"-I",
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"127.0.0.1",
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"-u",
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"/"
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]
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```
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Example for searching the debug log:
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# icinga2 feature enable debuglog
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# systemctl restart icinga2
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# tail -f /var/log/icinga2/debug.log | grep "notice/Process"
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```
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# icinga2 feature enable debuglog
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# systemctl restart icinga2
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# tail -f /var/log/icinga2/debug.log | grep "notice/Process"
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```
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### Checks are not executed <a id="checks-not-executed"></a>
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@ -297,15 +359,18 @@ Example for searching the debug log:
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Examples:
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# sudo -u icinga /usr/lib/nagios/plugins/check_ping -4 -H 127.0.0.1 -c 5000,100% -w 3000,80%
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```
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# sudo -u icinga /usr/lib/nagios/plugins/check_ping -4 -H 127.0.0.1 -c 5000,100% -w 3000,80%
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# icinga2 feature enable checker
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The feature 'checker' is already enabled.
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# icinga2 feature enable checker
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The feature 'checker' is already enabled.
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```
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Fetch all check result events matching the `event.service` name `random`:
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$ curl -k -s -u root:icinga -X POST 'https://localhost:5665/v1/events?queue=debugchecks&types=CheckResult&filter=match%28%22random*%22,event.service%29'
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```
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$ curl -k -s -u root:icinga -X POST 'https://localhost:5665/v1/events?queue=debugchecks&types=CheckResult&filter=match%28%22random*%22,event.service%29'
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```
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### Analyze Check Source <a id="checks-check-source"></a>
|
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|
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@ -321,35 +386,39 @@ as where the plugin is called.
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Example for retrieving the check source from all `disk` services using a
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[regex match](18-library-reference.md#global-functions-regex) on the name:
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|
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$ curl -k -s -u root:icinga -H 'Accept: application/json' -H 'X-HTTP-Method-Override: GET' -X POST 'https://localhost:5665/v1/objects/services' \
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-d '{ "filter": "regex(pattern, service.name)", "filter_vars": { "pattern": "^disk" }, "attrs": [ "__name", "last_check_result" ] }' | python -m json.tool
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{
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"results": [
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{
|
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"attrs": {
|
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"__name": "icinga2-client1.localdomain!disk",
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"last_check_result": {
|
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"active": true,
|
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"check_source": "icinga2-client1.localdomain",
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```
|
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$ curl -k -s -u root:icinga -H 'Accept: application/json' -H 'X-HTTP-Method-Override: GET' -X POST 'https://localhost:5665/v1/objects/services' \
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-d '{ "filter": "regex(pattern, service.name)", "filter_vars": { "pattern": "^disk" }, "attrs": [ "__name", "last_check_result" ] }' | python -m json.tool
|
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{
|
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"results": [
|
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{
|
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"attrs": {
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"__name": "icinga2-client1.localdomain!disk",
|
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"last_check_result": {
|
||||
"active": true,
|
||||
"check_source": "icinga2-client1.localdomain",
|
||||
|
||||
...
|
||||
...
|
||||
|
||||
}
|
||||
},
|
||||
"joins": {},
|
||||
"meta": {},
|
||||
"name": "icinga2-client1.localdomain!disk",
|
||||
"type": "Service"
|
||||
}
|
||||
]
|
||||
}
|
||||
}
|
||||
},
|
||||
"joins": {},
|
||||
"meta": {},
|
||||
"name": "icinga2-client1.localdomain!disk",
|
||||
"type": "Service"
|
||||
}
|
||||
]
|
||||
}
|
||||
```
|
||||
|
||||
Example for using the `icinga2 console` CLI command evaluation functionality:
|
||||
|
||||
$ ICINGA2_API_PASSWORD=icinga icinga2 console --connect 'https://root@localhost:5665/' \
|
||||
--eval 'get_service("icinga2-client1.localdomain", "disk").last_check_result.check_source' | python -m json.tool
|
||||
```
|
||||
$ ICINGA2_API_PASSWORD=icinga icinga2 console --connect 'https://root@localhost:5665/' \
|
||||
--eval 'get_service("icinga2-client1.localdomain", "disk").last_check_result.check_source' | python -m json.tool
|
||||
|
||||
"icinga2-client1.localdomain"
|
||||
"icinga2-client1.localdomain"
|
||||
```
|
||||
|
||||
|
||||
### NSClient++ Check Errors with nscp-local <a id="nsclient-check-errors-nscp-local"></a>
|
||||
|
|
@ -444,37 +513,42 @@ and might therefore hit this limit in larger setups.
|
|||
|
||||
The error message could look like this:
|
||||
|
||||
2017-01-12T11:55:40.742685+01:00 icinga2-master1 kernel: [65567.582895] cgroup: fork rejected by pids controller in /system.slice/icinga2.service
|
||||
```
|
||||
2017-01-12T11:55:40.742685+01:00 icinga2-master1 kernel: [65567.582895] cgroup: fork rejected by pids controller in /system.slice/icinga2.service
|
||||
```
|
||||
|
||||
In order to solve the problem, increase the value for `DefaultTasksMax`
|
||||
or set it to `infinity`:
|
||||
|
||||
```
|
||||
[root@icinga2-master1.localdomain /]# cp /usr/lib/systemd/system/icinga2.service /etc/systemd/system/icinga2.service
|
||||
[root@icinga2-master1.localdomain /]# vim /etc/systemd/system/icinga2.service
|
||||
|
||||
[root@icinga2-master1.localdomain /]# cp /usr/lib/systemd/system/icinga2.service /etc/systemd/system/icinga2.service
|
||||
[root@icinga2-master1.localdomain /]# vim /etc/systemd/system/icinga2.service
|
||||
[Service]
|
||||
|
||||
[Service]
|
||||
DefaultTasksMax=infinity
|
||||
|
||||
DefaultTasksMax=infinity
|
||||
|
||||
[root@icinga2-master1.localdomain /]# systemctl daemon-reload
|
||||
[root@icinga2-master1.localdomain /]# systemctl restart icinga2
|
||||
[root@icinga2-master1.localdomain /]# systemctl daemon-reload
|
||||
[root@icinga2-master1.localdomain /]# systemctl restart icinga2
|
||||
```
|
||||
|
||||
Please note that this setting is available since Systemd version 226.
|
||||
|
||||
> **Note**
|
||||
>
|
||||
> Future versions of Icinga 2 will add the setting as default.
|
||||
> Icinga 2 v2.7.1 adds the setting as default.
|
||||
|
||||
### Late Check Results <a id="late-check-results"></a>
|
||||
|
||||
[Icinga Web 2](https://www.icinga.com/products/icinga-web-2/) provides
|
||||
a dashboard overview for `overdue checks`.
|
||||
|
||||
The REST API provides the [status] URL endpoint with some generic metrics
|
||||
The REST API provides the [status](12-icinga2-api.md#icinga2-api-status) URL endpoint with some generic metrics
|
||||
on Icinga and its features.
|
||||
|
||||
# curl -k -s -u root:icinga 'https://localhost:5665/v1/status' | python -m json.tool | less
|
||||
```
|
||||
# curl -k -s -u root:icinga 'https://localhost:5665/v1/status' | python -m json.tool | less
|
||||
```
|
||||
|
||||
You can also calculate late check results via the REST API:
|
||||
|
||||
|
|
@ -484,28 +558,34 @@ You can also calculate late check results via the REST API:
|
|||
You can use the [icinga2 console](11-cli-commands.md#cli-command-console) to connect to the instance, fetch all data
|
||||
and calculate the differences. More infos can be found in [this blogpost](https://www.icinga.com/2016/08/11/analyse-icinga-2-problems-using-the-console-api/).
|
||||
|
||||
# ICINGA2_API_USERNAME=root ICINGA2_API_PASSWORD=icinga icinga2 console --connect 'https://localhost:5665/'
|
||||
```
|
||||
# ICINGA2_API_USERNAME=root ICINGA2_API_PASSWORD=icinga icinga2 console --connect 'https://localhost:5665/'
|
||||
|
||||
<1> => var res = []; for (s in get_objects(Service).filter(s => s.last_check < get_time() - 2 * s.check_interval)) { res.add([s.__name, DateTime(s.last_check).to_string()]) }; res
|
||||
<1> => var res = []; for (s in get_objects(Service).filter(s => s.last_check < get_time() - 2 * s.check_interval)) { res.add([s.__name, DateTime(s.last_check).to_string()]) }; res
|
||||
|
||||
[ [ "10807-host!10807-service", "2016-06-10 15:54:55 +0200" ], [ "mbmif.int.netways.de!disk /", "2016-01-26 16:32:29 +0100" ] ]
|
||||
[ [ "10807-host!10807-service", "2016-06-10 15:54:55 +0200" ], [ "mbmif.int.netways.de!disk /", "2016-01-26 16:32:29 +0100" ] ]
|
||||
```
|
||||
|
||||
Or if you are just interested in numbers, call [len](18-library-reference.md#array-len) on the result array `res`:
|
||||
|
||||
<2> => var res = []; for (s in get_objects(Service).filter(s => s.last_check < get_time() - 2 * s.check_interval)) { res.add([s.__name, DateTime(s.last_check).to_string()]) }; res.len()
|
||||
```
|
||||
<2> => var res = []; for (s in get_objects(Service).filter(s => s.last_check < get_time() - 2 * s.check_interval)) { res.add([s.__name, DateTime(s.last_check).to_string()]) }; res.len()
|
||||
|
||||
2.000000
|
||||
2.000000
|
||||
```
|
||||
|
||||
If you need to analyze that problem multiple times, just add the current formatted timestamp
|
||||
and repeat the commands.
|
||||
|
||||
<23> => DateTime(get_time()).to_string()
|
||||
```
|
||||
<23> => DateTime(get_time()).to_string()
|
||||
|
||||
"2017-04-04 16:09:39 +0200"
|
||||
"2017-04-04 16:09:39 +0200"
|
||||
|
||||
<24> => var res = []; for (s in get_objects(Service).filter(s => s.last_check < get_time() - 2 * s.check_interval)) { res.add([s.__name, DateTime(s.last_check).to_string()]) }; res.len()
|
||||
<24> => var res = []; for (s in get_objects(Service).filter(s => s.last_check < get_time() - 2 * s.check_interval)) { res.add([s.__name, DateTime(s.last_check).to_string()]) }; res.len()
|
||||
|
||||
8287.000000
|
||||
8287.000000
|
||||
```
|
||||
|
||||
More details about the Icinga 2 DSL and its possibilities can be
|
||||
found in the [language](17-language-reference.md#language-reference) and [library](18-library-reference.md#library-reference) reference chapters.
|
||||
|
|
@ -516,11 +596,13 @@ When it comes to a distributed HA setup, each node is responsible for a load-bal
|
|||
Host and Service objects provide the attribute `paused`. If this is set to `false`, the current node
|
||||
actively attempts to schedule and execute checks. Otherwise the node does not feel responsible.
|
||||
|
||||
<3> => var res = {}; for (s in get_objects(Service).filter(s => s.last_check < get_time() - 2 * s.check_interval)) { res[s.paused] += 1 }; res
|
||||
{
|
||||
@false = 2.000000
|
||||
@true = 1.000000
|
||||
}
|
||||
```
|
||||
<3> => var res = {}; for (s in get_objects(Service).filter(s => s.last_check < get_time() - 2 * s.check_interval)) { res[s.paused] += 1 }; res
|
||||
{
|
||||
@false = 2.000000
|
||||
@true = 1.000000
|
||||
}
|
||||
```
|
||||
|
||||
You may ask why this analysis is important? Fair enough - if the numbers are not inverted in a HA zone
|
||||
with two members, this may give a hint that the cluster nodes are in a split-brain scenario, or you've
|
||||
|
|
@ -534,18 +616,22 @@ you might want to know which zones are affected.
|
|||
This analysis assumes that clients which are not connected, have the string `connected` in their
|
||||
service check result output and their state is `UNKNOWN`.
|
||||
|
||||
<4> => var res = {}; for (s in get_objects(Service)) { if (s.state==3) { if (match("*connected*", s.last_check_result.output)) { res[s.zone] += [s.host_name] } } }; for (k => v in res) { res[k] = len(v.unique()) }; res
|
||||
```
|
||||
<4> => var res = {}; for (s in get_objects(Service)) { if (s.state==3) { if (match("*connected*", s.last_check_result.output)) { res[s.zone] += [s.host_name] } } }; for (k => v in res) { res[k] = len(v.unique()) }; res
|
||||
|
||||
{
|
||||
Asia = 31.000000
|
||||
Europe = 214.000000
|
||||
USA = 207.000000
|
||||
}
|
||||
{
|
||||
Asia = 31.000000
|
||||
Europe = 214.000000
|
||||
USA = 207.000000
|
||||
}
|
||||
```
|
||||
|
||||
The result set shows the configured zones and their affected hosts in a unique list. The output also just prints the numbers
|
||||
but you can adjust this by omitting the `len()` call inside the for loop.
|
||||
|
||||
## Notifications are not sent <a id="notifications-not-sent"></a>
|
||||
## Notifications Troubleshooting <a id="troubleshooting-notifications"></a>
|
||||
|
||||
### Notifications are not sent <a id="notifications-not-sent"></a>
|
||||
|
||||
* Check the [debug log](15-troubleshooting.md#troubleshooting-enable-debug-output) to see if a notification is triggered.
|
||||
* If yes, verify that all conditions are satisfied.
|
||||
|
|
@ -571,15 +657,27 @@ changed on your system.
|
|||
|
||||
Examples:
|
||||
|
||||
# icinga2 feature enable notification
|
||||
The feature 'notification' is already enabled.
|
||||
```
|
||||
# icinga2 feature enable notification
|
||||
The feature 'notification' is already enabled.
|
||||
```
|
||||
|
||||
```
|
||||
# icinga2 feature enable debuglog
|
||||
# systemctl restart icinga2
|
||||
|
||||
# grep Notification /var/log/icinga2/debug.log > /root/analyze_notification_problem.log
|
||||
```
|
||||
|
||||
You can use the Icinga 2 API [event streams](12-icinga2-api.md#icinga2-api-event-streams) to receive live notification streams:
|
||||
|
||||
$ curl -k -s -u root:icinga -X POST 'https://localhost:5665/v1/events?queue=debugnotifications&types=Notification'
|
||||
```
|
||||
$ curl -k -s -u root:icinga -X POST 'https://localhost:5665/v1/events?queue=debugnotifications&types=Notification'
|
||||
```
|
||||
|
||||
## Feature Troubleshooting <a id="troubleshooting-features"></a>
|
||||
|
||||
## Feature is not working <a id="feature-not-working"></a>
|
||||
### Feature is not working <a id="feature-not-working"></a>
|
||||
|
||||
* Make sure that the feature configuration is enabled by symlinking from `features-available/`
|
||||
to `features-enabled` and that the latter is included in [icinga2.conf](04-configuring-icinga-2.md#icinga2-conf).
|
||||
|
|
@ -588,41 +686,146 @@ to `features-enabled` and that the latter is included in [icinga2.conf](04-confi
|
|||
|
||||
Look up the [object type](09-object-types.md#object-types) for the required feature and verify it is enabled:
|
||||
|
||||
# icinga2 object list --type <feature object type>
|
||||
```
|
||||
# icinga2 object list --type <feature object type>
|
||||
```
|
||||
|
||||
Example for the `graphite` feature:
|
||||
|
||||
# icinga2 object list --type GraphiteWriter
|
||||
```
|
||||
# icinga2 object list --type GraphiteWriter
|
||||
```
|
||||
|
||||
## Configuration is ignored <a id="configuration-ignored"></a>
|
||||
Look into the log and check whether the feature logs anything specific for this matter.
|
||||
|
||||
* Make sure that the line(s) are not [commented out](17-language-reference.md#comments) (starting with `//` or `#`, or
|
||||
encapsulated by `/* ... */`).
|
||||
* Is the configuration file included in [icinga2.conf](04-configuring-icinga-2.md#icinga2-conf)?
|
||||
```
|
||||
grep GraphiteWriter /var/log/icinga2/icinga2.log
|
||||
```
|
||||
|
||||
Run the [configuration validation](11-cli-commands.md#config-validation) and add `notice` as log severity.
|
||||
Search for the file which should be included i.e. using the `grep` CLI command.
|
||||
|
||||
# icinga2 daemon -C -x notice | grep command
|
||||
## Certificate Troubleshooting <a id="troubleshooting-certificate"></a>
|
||||
|
||||
## Configuration attributes are inherited from <a id="configuration-attribute-inheritance"></a>
|
||||
### Certificate Verification <a id="troubleshooting-certificate-verification"></a>
|
||||
|
||||
Icinga 2 allows you to import templates using the [import](17-language-reference.md#template-imports) keyword. If these templates
|
||||
contain additional attributes, your objects will automatically inherit them. You can override
|
||||
or modify these attributes in the current object.
|
||||
If the TLS handshake fails when a client connects to the cluster or the REST API,
|
||||
ensure to verify the used certificates.
|
||||
|
||||
The [object list](15-troubleshooting.md#list-configuration-objects) CLI command allows you to verify the attribute origin.
|
||||
Print the CA and client certificate and ensure that the following attributes are set:
|
||||
|
||||
## Configuration Value with Single Dollar Sign <a id="configuration-value-dollar-sign"></a>
|
||||
* Version must be 3.
|
||||
* Serial number is a hex-encoded string.
|
||||
* Issuer should be your certificate authority (defaults to `Icinga CA` for all CLI commands).
|
||||
* Validity, meaning to say the certificate is not expired.
|
||||
* Subject with the common name (CN) matches the client endpoint name and its FQDN.
|
||||
* v3 extensions must set the basic constraint for `CA:TRUE` (ca.crt) or `CA:FALSE` (client certificate).
|
||||
* Subject Alternative Name is set to a proper DNS name (required for REST API and browsers).
|
||||
|
||||
In case your configuration validation fails with a missing closing dollar sign error message, you
|
||||
did not properly escape the single dollar sign preventing its usage as [runtime macro](03-monitoring-basics.md#runtime-macros).
|
||||
|
||||
critical/config: Error: Validation failed for Object 'ping4' (Type: 'Service') at /etc/icinga2/zones.d/global-templates/windows.conf:24: Closing $ not found in macro format string 'top-syntax=${list}'.
|
||||
```
|
||||
# cd /var/lib/icinga2/certs/
|
||||
```
|
||||
|
||||
Correct the custom attribute value to
|
||||
CA certificate:
|
||||
|
||||
```
|
||||
# openssl x509 -in ca.crt -text
|
||||
|
||||
Certificate:
|
||||
Data:
|
||||
Version: 3 (0x2)
|
||||
Serial Number: 1 (0x1)
|
||||
Signature Algorithm: sha256WithRSAEncryption
|
||||
Issuer: CN=Icinga CA
|
||||
Validity
|
||||
Not Before: Feb 23 14:45:32 2016 GMT
|
||||
Not After : Feb 19 14:45:32 2031 GMT
|
||||
Subject: CN=Icinga CA
|
||||
Subject Public Key Info:
|
||||
Public Key Algorithm: rsaEncryption
|
||||
Public-Key: (4096 bit)
|
||||
Modulus:
|
||||
...
|
||||
Exponent: 65537 (0x10001)
|
||||
X509v3 extensions:
|
||||
X509v3 Basic Constraints: critical
|
||||
CA:TRUE
|
||||
Signature Algorithm: sha256WithRSAEncryption
|
||||
...
|
||||
```
|
||||
|
||||
Client public certificate:
|
||||
|
||||
```
|
||||
# openssl x509 -in icinga2-client1.localdomain.crt -text
|
||||
|
||||
Certificate:
|
||||
Data:
|
||||
Version: 3 (0x2)
|
||||
Serial Number:
|
||||
86:47:44:65:49:c6:65:6b:5e:6d:4f:a5:fe:6c:76:05:0b:1a:cf:34
|
||||
Signature Algorithm: sha256WithRSAEncryption
|
||||
Issuer: CN=Icinga CA
|
||||
Validity
|
||||
Not Before: Aug 20 16:20:05 2016 GMT
|
||||
Not After : Aug 17 16:20:05 2031 GMT
|
||||
Subject: CN=icinga2-client1.localdomain
|
||||
Subject Public Key Info:
|
||||
Public Key Algorithm: rsaEncryption
|
||||
Public-Key: (4096 bit)
|
||||
Modulus:
|
||||
...
|
||||
Exponent: 65537 (0x10001)
|
||||
X509v3 extensions:
|
||||
X509v3 Basic Constraints: critical
|
||||
CA:FALSE
|
||||
X509v3 Subject Alternative Name:
|
||||
DNS:icinga2-client1.localdomain
|
||||
Signature Algorithm: sha256WithRSAEncryption
|
||||
...
|
||||
```
|
||||
|
||||
Make sure to verify the client's certificate and its received `ca.crt` in `/var/lib/icinga2/certs` and ensure that
|
||||
both instances are signed by the **same CA**.
|
||||
|
||||
```
|
||||
# openssl verify -verbose -CAfile /var/lib/icinga2/certs/ca.crt /var/lib/icinga2/certs/icinga2-master1.localdomain.crt
|
||||
icinga2-master1.localdomain.crt: OK
|
||||
|
||||
# openssl verify -verbose -CAfile /var/lib/icinga2/certs/ca.crt /var/lib/icinga2/certs/icinga2-client1.localdomain.crt
|
||||
icinga2-client1.localdomain.crt: OK
|
||||
```
|
||||
|
||||
Fetch the `ca.crt` file from the client node and compare it to your master's `ca.crt` file:
|
||||
|
||||
```
|
||||
# scp icinga2-client1:/var/lib/icinga2/certs/ca.crt test-client-ca.crt
|
||||
# diff -ur /var/lib/icinga2/certs/ca.crt test-client-ca.crt
|
||||
```
|
||||
|
||||
On SLES11 you'll need to use the `openssl1` command instead of `openssl`.
|
||||
|
||||
<!--
|
||||
### Certificate Signing <a id="troubleshooting-certificate-signing"></a>
|
||||
-->
|
||||
|
||||
|
||||
### Certificate Problems with OpenSSL 1.1.0 <a id="troubleshooting-certificate-openssl-1-1-0"></a>
|
||||
|
||||
Users have reported problems with SSL certificates inside a distributed monitoring setup when they
|
||||
|
||||
* updated their Icinga 2 package to 2.7.0 on Windows or
|
||||
* upgraded their distribution which included an update to OpenSSL 1.1.0.
|
||||
|
||||
Example during startup on a Windows client:
|
||||
|
||||
```
|
||||
critical/SSL: Error loading and verifying locations in ca key file 'C:\ProgramData\icinga2\etc/icinga2/pki/ca.crt': 219029726, "error:0D0E20DE:asn1 encoding routines:c2i_ibuf:illegal zero content"
|
||||
critical/config: Error: Cannot make SSL context for cert path: 'C:\ProgramData\icinga2\etc/icinga2/pki/client.crt' key path: 'C:\ProgramData\icinga2\etc/icinga2/pki/client.key' ca path: 'C:\ProgramData\icinga2\etc/icinga2/pki/ca.crt'.
|
||||
```
|
||||
|
||||
A technical analysis and solution for re-creating the public CA certificate is
|
||||
available in [this advisory](https://www.icinga.com/2017/08/30/advisory-for-ssl-problems-with-leading-zeros-on-openssl-1-1-0/).
|
||||
|
||||
"top-syntax=$${list}"
|
||||
|
||||
## Cluster and Clients Troubleshooting <a id="troubleshooting-cluster"></a>
|
||||
|
||||
|
|
@ -647,11 +850,13 @@ General connection errors could be one of the following problems:
|
|||
Use tools like `netstat`, `tcpdump`, `nmap`, etc. to make sure that the cluster communication
|
||||
works (default port is `5665`).
|
||||
|
||||
# tcpdump -n port 5665 -i any
|
||||
```
|
||||
# tcpdump -n port 5665 -i any
|
||||
|
||||
# netstat -tulpen | grep icinga
|
||||
# netstat -tulpen | grep icinga
|
||||
|
||||
# nmap yourclusternode.localdomain
|
||||
# nmap icinga2-client1.localdomain
|
||||
```
|
||||
|
||||
### Cluster Troubleshooting SSL Errors <a id="troubleshooting-cluster-ssl-errors"></a>
|
||||
|
||||
|
|
@ -664,37 +869,18 @@ the following
|
|||
* Verify the `Subject` containing your endpoint's common name (CN)
|
||||
* Check the validity of the certificate itself
|
||||
|
||||
Steps on the client `icinga2-node2.localdomain`:
|
||||
Try to manually connect from `icinga2-client1.localdomain` to the master node `icinga2-master1.localdomain`:
|
||||
|
||||
# ls -la /var/lib/icinga2/certs
|
||||
```
|
||||
# openssl s_client -CAfile /var/lib/icinga2/certs/ca.crt -cert /var/lib/icinga2/certs/icinga2-client1.localdomain.crt -key /var/lib/icinga2/certs/icinga2-client1.localdomain.key -connect icinga2-master1.localdomain:5665
|
||||
|
||||
# cd /var/lib/icinga2/certs/
|
||||
# openssl x509 -in icinga2-node2.localdomain.crt -text
|
||||
Certificate:
|
||||
Data:
|
||||
Version: 1 (0x0)
|
||||
Serial Number: 2 (0x2)
|
||||
Signature Algorithm: sha1WithRSAEncryption
|
||||
Issuer: C=DE, ST=Bavaria, L=Nuremberg, O=NETWAYS GmbH, OU=Monitoring, CN=Icinga CA
|
||||
Validity
|
||||
Not Before: Jan 7 13:17:38 2014 GMT
|
||||
Not After : Jan 5 13:17:38 2024 GMT
|
||||
Subject: C=DE, ST=Bavaria, L=Nuremberg, O=NETWAYS GmbH, OU=Monitoring, CN=icinga2-node2.localdomain
|
||||
Subject Public Key Info:
|
||||
Public Key Algorithm: rsaEncryption
|
||||
Public-Key: (4096 bit)
|
||||
Modulus:
|
||||
...
|
||||
CONNECTED(00000003)
|
||||
---
|
||||
...
|
||||
```
|
||||
|
||||
Try to manually connect from `icinga2-node2.localdomain` to the master node `icinga2-node1.localdomain`:
|
||||
If the connection attempt fails or your CA does not match, [verify the certificates](15-troubleshooting.md#troubleshooting-certificate-verification).
|
||||
|
||||
# openssl s_client -CAfile /var/lib/icinga2/certs/ca.crt -cert /var/lib/icinga2/certs/icinga2-node2.localdomain.crt -key /var/lib/icinga2/certs/icinga2-node2.localdomain.key -connect icinga2-node1.localdomain:5665
|
||||
|
||||
CONNECTED(00000003)
|
||||
---
|
||||
...
|
||||
|
||||
If the connection attempt fails or your CA does not match, [verify the master and client certificates](15-troubleshooting.md#troubleshooting-cluster-ssl-certificate-verification).
|
||||
|
||||
#### Cluster Troubleshooting Unauthenticated Clients <a id="troubleshooting-cluster-unauthenticated-clients"></a>
|
||||
|
||||
|
|
@ -702,41 +888,30 @@ Unauthenticated nodes are able to connect. This is required for client setups.
|
|||
|
||||
Master:
|
||||
|
||||
[2015-07-13 18:29:25 +0200] information/ApiListener: New client connection for identity 'icinga-client' (unauthenticated)
|
||||
```
|
||||
[2015-07-13 18:29:25 +0200] information/ApiListener: New client connection for identity 'icinga2-client1.localdomain' (unauthenticated)
|
||||
```
|
||||
|
||||
Client as command execution bridge:
|
||||
|
||||
[2015-07-13 18:29:26 +1000] notice/ApiEvents: Discarding 'execute command' message from 'icinga-master': Invalid endpoint origin (client not allowed).
|
||||
```
|
||||
[2015-07-13 18:29:26 +1000] notice/ClusterEvents: Discarding 'execute command' message from 'icinga2-master1.localdomain': Invalid endpoint origin (client not allowed).
|
||||
```
|
||||
|
||||
If these messages do not go away, make sure to [verify the master and client certificates](15-troubleshooting.md#troubleshooting-cluster-ssl-certificate-verification).
|
||||
|
||||
#### Cluster Troubleshooting SSL Certificate Verification <a id="troubleshooting-cluster-ssl-certificate-verification"></a>
|
||||
|
||||
Make sure to verify the client's certificate and its received `ca.crt` in `/var/lib/icinga2/certs` and ensure that
|
||||
both instances are signed by the **same CA**.
|
||||
|
||||
# openssl verify -verbose -CAfile /var/lib/icinga2/certs/ca.crt /var/lib/icinga2/certs/icinga2-node1.localdomain.crt
|
||||
icinga2-node1.localdomain.crt: OK
|
||||
|
||||
# openssl verify -verbose -CAfile /var/lib/icinga2/certs/ca.crt /var/lib/icinga2/certs/icinga2-node2.localdomain.crt
|
||||
icinga2-node2.localdomain.crt: OK
|
||||
|
||||
Fetch the `ca.crt` file from the client node and compare it to your master's `ca.crt` file:
|
||||
|
||||
# scp icinga2-node2:/var/lib/icinga2/certs/ca.crt test-client-ca.crt
|
||||
# diff -ur /var/lib/icinga2/certs/ca.crt test-client-ca.crt
|
||||
|
||||
On SLES11 you'll need to use the `openssl1` command instead of `openssl`.
|
||||
If these messages do not go away, make sure to [verify the master and client certificates](15-troubleshooting.md#troubleshooting-certificate-verification).
|
||||
|
||||
### Cluster Troubleshooting Message Errors <a id="troubleshooting-cluster-message-errors"></a>
|
||||
|
||||
At some point, when the network connection is broken or gone, the Icinga 2 instances
|
||||
will be disconnected. If the connection can't be re-established between endpoints in the same HA zone,
|
||||
When the network connection is broken or gone, the Icinga 2 instances will be disconnected.
|
||||
If the connection can't be re-established between endpoints in the same HA zone,
|
||||
they remain in a Split-Brain-mode and history may differ.
|
||||
|
||||
Although the Icinga 2 cluster protocol stores historical events in a [replay log](15-troubleshooting.md#troubleshooting-cluster-replay-log)
|
||||
for later synchronisation, you should make sure to check why the network connection failed.
|
||||
|
||||
Ensure to setup [cluster health checks](06-distributed-monitoring.md#distributed-monitoring-health-checks)
|
||||
to monitor all endpoints and zones connectivity.
|
||||
|
||||
### Cluster Troubleshooting Command Endpoint Errors <a id="troubleshooting-cluster-command-endpoint-errors"></a>
|
||||
|
||||
Command endpoints can be used [for clients](06-distributed-monitoring.md#distributed-monitoring-top-down-command-endpoint)
|
||||
|
|
@ -758,7 +933,9 @@ the following (e.g. by invoking a forced check from the web interface):
|
|||
|
||||
Fetch all check result events matching the `event.service` name `remote-client`:
|
||||
|
||||
$ curl -k -s -u root:icinga -X POST 'https://localhost:5665/v1/events?queue=debugcommandendpoint&types=CheckResult&filter=match%28%22remote-client*%22,event.service%29'
|
||||
```
|
||||
$ curl -k -s -u root:icinga -X POST 'https://localhost:5665/v1/events?queue=debugcommandendpoint&types=CheckResult&filter=match%28%22remote-client*%22,event.service%29'
|
||||
```
|
||||
|
||||
|
||||
|
||||
|
|
@ -773,7 +950,8 @@ If the cluster zones do not sync their configuration, make sure to check the fol
|
|||
[accepts config](06-distributed-monitoring.md#distributed-monitoring-top-down-config-sync), or not.
|
||||
|
||||
Verify the object's [version](09-object-types.md#object-types) attribute on all nodes to
|
||||
check whether the config update and reload was succesful or not.
|
||||
check whether the config update and reload was successful or not.
|
||||
|
||||
|
||||
### Cluster Troubleshooting Overdue Check Results <a id="troubleshooting-cluster-check-results"></a>
|
||||
|
||||
|
|
@ -781,6 +959,10 @@ If your master does not receive check results (or any other events) from the chi
|
|||
(satellite, clients, etc.), make sure to check whether the client sending in events
|
||||
is allowed to do so.
|
||||
|
||||
> **Tip**
|
||||
>
|
||||
> General troubleshooting hints on late check results are documented [here](15-troubleshooting.md#late-check-results).
|
||||
|
||||
The [distributed monitoring conventions](06-distributed-monitoring.md#distributed-monitoring-conventions)
|
||||
apply. So, if there's a mismatch between your client node's endpoint name and its provided
|
||||
certificate's CN, the master will deny all events.
|
||||
|
|
@ -797,12 +979,16 @@ If the client cannot authenticate, it's a more general [problem](15-troubleshoot
|
|||
|
||||
The client's endpoint is not configured on nor trusted by the master node:
|
||||
|
||||
Discarding 'check result' message from 'icinga2b': Invalid endpoint origin (client not allowed).
|
||||
```
|
||||
Discarding 'check result' message from 'icinga2-client1.localdomain': Invalid endpoint origin (client not allowed).
|
||||
```
|
||||
|
||||
The check result message sent by the client does not belong to the zone the checkable object is
|
||||
in on the master:
|
||||
|
||||
Discarding 'check result' message from 'icinga2b': Unauthorized access.
|
||||
```
|
||||
Discarding 'check result' message from 'icinga2-client1.localdomain': Unauthorized access.
|
||||
```
|
||||
|
||||
|
||||
### Cluster Troubleshooting Replay Log <a id="troubleshooting-cluster-replay-log"></a>
|
||||
|
|
|
|||
|
|
@ -9,10 +9,14 @@ When an exception occurs or the [debugger](17-language-reference.md#breakpoints)
|
|||
keyword is encountered in a user script, Icinga 2 launches a console that
|
||||
allows the user to debug the script.
|
||||
|
||||
You can also attach the script debugger to the [configuration validation](11-cli-commands.md#config-validation):
|
||||
|
||||
# icinga2 daemon -C -X
|
||||
|
||||
Here is a list of common errors which can be diagnosed with the script debugger:
|
||||
|
||||
* Configuration errors (apply)
|
||||
* Errors in user-defined functions
|
||||
* Configuration errors e.g. [apply rules](03-monitoring-basics.md#using-apply)
|
||||
* Errors in user-defined [functions](17-language-reference.md#functions)
|
||||
|
||||
## Debugging Configuration Errors <a id="script-debugger-config-errors"></a>
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue