mirror of https://github.com/Icinga/icinga2.git
Update documentation.
This commit is contained in:
Gunnar Beutner
parent
1eb209e4f0
commit
5a6b7ffb78
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@ -15,6 +15,10 @@ Packages for distributions other than the ones listed above may also be
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available. Please check http://packages.icinga.org/ to see if packages
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are available for your favorite distribution.
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You can install Icinga 2 by using your distribution's package manager
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to install the *icinga2* package. Some parts of Icinga 2's functionality
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are available as separate packages.
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In case you're running a distribution for which Icinga 2 packages are
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not yet available you will have to use the release tarball which you
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can download from the [Icinga website](https://www.icinga.org/). The
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@ -30,6 +30,20 @@ following commands:
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> found on the Icinga Wiki here:
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> [https://wiki.icinga.org/display/howtos/Setting+up+Icinga+Classic+UI+Standalone](https://wiki.icinga.org/display/howtos/Setting+up+Icinga+Classic+UI+Standalone)
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#### Configuring Icinga 2
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By default Icinga 2 does not write *status.dat* and *objects.cache* files which are used
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by the Classic UI. The command pipe is also not enabled by default.
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You can use i2enfeature to enable these features:
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# i2enfeature statusdat
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# i2enfeature command
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After enabling these features you will need to restart Icinga 2:
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# /etc/init.d/icinga2 restart
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#### Configuring the Classic UI
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After installing the Classic UI you will need to update the following
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@ -1,14 +1,15 @@
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### Configuring IDO
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The IDO (Icinga Data Output) modules for Icinga 2 takes care of exporting all
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configuration and status information into a database.
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configuration and status information into a database. The IDO database is used
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by a number of projects including Icinga Web.
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There is a separate module for each database backend. At present only support
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for MySQL is implemented.
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#### Setting up the database
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First of all you will need to create a database for Icinga 2:
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First of all you have to create a database for Icinga 2:
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# mysql -u root -p
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@ -29,14 +30,13 @@ First of all you will need to create a database for Icinga 2:
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mysql> quit
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After creating the database you can import the Icinga 2 IDO schema using the
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following commands:
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following command:
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# cd /path/to/icinga-src/components/db_ido_mysql/schema
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# mysql -u root -p icinga < mysql.sql
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# mysql -u root -p icinga < /path/to/icinga-src/components/db_ido_mysql/schema/mysql.sql
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#### Installing the IDO module
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Once you've set up your database you will need to install the *icinga2-ido-mysql*
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Once you've set up your database you have to install the *icinga2-ido-mysql*
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package using your distribution's package manager.
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The package provides a new configuration file that is installed in
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@ -49,6 +49,6 @@ You can enable the ido-mysql feature configuration file using *i2enfeature*:
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Module 'ido-mysql' was enabled.
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Make sure to restart Icinga 2 for these changes to take effect.
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After enabling the ido-mysql feature you will need to restart Icinga 2:
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After enabling the ido-mysql feature you have to restart Icinga 2:
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# /etc/init.d/icinga2 restart
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@ -1,12 +1,85 @@
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## Monitoring Basics
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### Hosts
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This part of the Icinga 2 documentation provides an overview of all the basic
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monitoring concepts you need to know to run Icinga 2.
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TODO
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### Hosts and Services
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### Services
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Icinga 2 can be used to monitor the availability of hosts and services. Services
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can be virtually anything which can be checked in some way:
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TODO
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* Network services (HTTP, SMTP, SNMP, SSH, etc.)
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* Printers
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* Switches / Routers
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* Temperature Sensors
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* Other local or network-accessible services
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Host objects provide a mechanism to group together services that are running
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on the same physical device.
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Here is an example of a host object which defines two child services:
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object Host "my-server1" {
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services["ping4"] = {
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check_command = "ping4"
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},
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services["http"] = {
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check_command = "http_ip"
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},
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check = "ping4",
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macros["address"] = "10.0.0.1"
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}
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The example host *my-server1* creates two services which belong to this host:
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*ping4* and *http*.
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It also specifies that the host should inherit its availability state from the
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*ping4* service.
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> **Note**
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>
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> In Icinga 1.x hosts had their own check command, check interval and
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> notification settings. Instead, in Icinga 2 hosts inherit their state
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> from one of its child services. No checks are performed for the host
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> itself.
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The *address* macro is used by check commands to determine which network
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address is associated with the host object.
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#### Host States
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Name | Description
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------------|--------------
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UP | The host is available.
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DOWN | The host is unavailable.
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UNREACHABLE | At least one of the host's dependencies (e.g. its upstream router) is unavailable causing the host to be unreachable.
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#### Service States
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Name | Description
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------------|--------------
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OK | The service is fully available.
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WARNING | The service is experiencing some problems but is still considered available.
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CRITICAL | The service is in a critical state.
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UNKNOWN | The check could not determine the service's state.
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#### Hard and Soft States
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When detecting a problem with a service Icinga re-checks the service a number of
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times (based on the *max_check_attempts* and *retry_interval* settings) before sending
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notifications. This ensures that no unnecessary notifications are sent for
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transient failures. During this time the service is in a *SOFT* state.
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After all re-checks have been executed and the service is still in a non-OK
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state the service switches to a *HARD* state and notifications are sent.
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Name | Description
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------------|--------------
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HARD | The host/service's state hasn't recently changed.
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SOFT | The host/service has recently changed state and is being re-checked.
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### Check Commands
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@ -14,25 +87,187 @@ TODO
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### Macros
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TODO
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Macros may be used in command definitions to dynamically change how the command
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is executed.
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## Using Templates
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Here is an example of a command definition which uses user-defined macros:
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object CheckCommand "my-ping" inherits "plugin-check-command" {
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command = [
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"$plugindir$/check_ping",
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"-4",
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"-H", "$address$",
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"-w", "$wrta$,$wpl$%",
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"-c", "$crta$,$cpl$%",
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"-p", "$packets$",
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"-t", "$timeout$"
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],
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macros = {
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wrta = 100,
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wpl = 5,
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crta = 200,
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cpl = 15,
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packets = 5,
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timeout = 0
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}
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}
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> **Note**
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>
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> If you have previously used Icinga 1.x you may already be familiar with
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> user and argument macros (e.g., USER1 or ARG1). Unlike in Icinga 1.x macros
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> may have arbitrary names and arguments are no longer specified in the
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> check_command setting.
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Macro names must be enclosed in two *$* signs, e.g. *$plugindir$*. When
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executing the command Icinga 2 checks the following objects in this
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order to look up macros:
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1. User object (only for notifications)
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2. Service object
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3. Host object
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4. Command object
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5. Global macros in the IcingaMacros variable
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This execution order allows you to define default values for macros in your
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command objects. The *my-ping* command shown above uses this to set default
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values for some of the latency thresholds and timeouts.
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When using the *my-ping* command you can overwrite all or some of the macros
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in the service definition like this:
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object Host "my-server1" {
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services["ping"] = {
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check_command = "my-ping",
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macros["packets"] = 10 // Overwrites the default value of 5 given in the command
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},
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macros["address"] = "10.0.0.1"
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}
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If a macro isn't defined anywhere an empty value is used and a warning is
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emitted to the Icinga 2 log.
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> **Note**
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>
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> Macros in capital letters (e.g. HOSTNAME) are reserved for use by Icinga 2
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> and should not be overwritten by users.
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By convention every host should have an *address* macro. Hosts
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which have an IPv6 address should also have an *address6* macro.
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The *plugindir* macro should be set to the path of your check plugins. The
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*/etc/icinga2/conf.d/macros.conf* file is usually used to define global macros
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including this one.
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#### Host Macros
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The following host macros are available in all commands that are executed for
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hosts or services:
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Name | Description
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-----------------------|--------------
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HOSTNAME |The name of the host object.
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HOSTDISPLAYNAME |The value of the display_name attribute.
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HOSTALIAS |This is an alias for the *HOSTDISPLAYNAME* macro.
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HOSTSTATE |The host's current state. Can be one of UNREACHABLE, UP and DOWN.
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HOSTSTATEID |The host's current state. Can be one of 0 (up), 1 (down) and 2 (unreachable).
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HOSTSTATETYPE |The host's current state type. Can be one of SOFT and HARD.
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HOSTATTEMPT |The current check attempt number.
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MAXHOSTATTEMPT |The maximum number of checks which are executed before changing to a hard state.
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LASTHOSTSTATE |The host's previous state. Can be one of UNREACHABLE, UP and DOWN.
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LASTHOSTSTATEID |The host's previous state. Can be one of 0 (up), 1 (down) and 2 (unreachable).
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LASTHOSTSTATETYPE |The host's previous state type. Can be one of SOFT and HARD.
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HOSTLATENCY |The host's check latency.
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HOSTEXECUTIONTIME |The host's check execution time.
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HOSTOUTPUT |The last check's output.
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HOSTPERFDATA |The last check's performance data.
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LASTHOSTCHECK |The timestamp when the last check was executed.
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HOSTADDRESS |This is an alias for the *address* macro. If the *address* macro is not defined the host object's name is used instead.
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HOSTADDRESS6 |This is an alias for the *address6* macro. If the *address* macro is not defined the host object's name is used instead.
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#### Service Macros
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The following service macros are available in all commands that are executed for
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services:
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Name | Description
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-----------------------|--------------
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SERVICEDESC |The short name of the service object.
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SERVICEDISPLAYNAME |The value of the display_name attribute.
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SERVICECHECKCOMMAND |This is an alias for the *SERVICEDISPLAYNAME* macro.
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SERVICESTATE |The service's current state. Can be one of OK, WARNING, CRITICAL, UNCHECKABLE and UNKNOWN.
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SERVICESTATEID |The service's current state. Can be one of 0 (ok), 1 (warning), 2 (critical), 3 (unknown) and 4 (uncheckable).
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SERVICESTATETYPE |The service's current state type. Can be one of SOFT and HARD.
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SERVICEATTEMPT |The current check attempt number.
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MAXSERVICEATTEMPT |The maximum number of checks which are executed before changing to a hard state.
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LASTSERVICESTATE |The service's previous state. Can be one of OK, WARNING, CRITICAL, UNCHECKABLE and UNKNOWN.
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LASTSERVICESTATEID |The service's previous state. Can be one of 0 (ok), 1 (warning), 2 (critical), 3 (unknown) and 4 (uncheckable).
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LASTSERVICESTATETYPE |The service's previous state type. Can be one of SOFT and HARD.
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LASTSERVICESTATECHANGE |The last state change's timestamp.
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SERVICELATENCY |The service's check latency.
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SERVICEEXECUTIONTIME |The service's check execution time.
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SERVICEOUTPUT |The last check's output.
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SERVICEPERFDATA |The last check's performance data.
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LASTSERVICECHECK |The timestamp when the last check was executed.
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#### User Macros
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The following service macros are available in all commands that are executed for
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users:
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Name | Description
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-----------------------|---------------
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CONTACTNAME | The name of the user object.
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CONTACTALIAS | The value of the display_name attribute.
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CONTACTEMAIL | This is an alias for the *email* macro.
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CONTACTPAGER | This is an alias for the *pager* macro.
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### Using Templates
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Templates may be used to apply a set of similar settings to more than one
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object.
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For example, rather than manually creating a *ping* service object for each of
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your hosts you can use templates to avoid having to copy & paste parts of your
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config:
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template Host "linux-server" {
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services["ping"] = {
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check_command = "ping4"
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},
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check = "ping4"
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}
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object Host "my-server1" inherits "linux-server" {
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macros["address"] = "10.0.0.1"
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}
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object Host "my-server2" inherits "linux-server" {
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macros["address"] = "10.0.0.2"
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}
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In this example both *my-server1* and *my-server2* each get their own ping
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service check.
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Objects as well as templates themselves can inherit from an arbitrary number of
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templates. Attributes inherited from a template can be overwritten in the
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object if necessary.
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### Groups
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TODO
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## Groups
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### Host/Service Dependencies
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TODO
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## Host/Service Dependencies
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TODO
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## Time Periods
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TODO
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## Notifications
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### Notifications
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TODO
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@ -106,15 +106,15 @@ Attributes:
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display_name |**Optional.** A short description of the service.
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macros |**Optional.**
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check\_command |**Required.** The name of the check command.
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max\_check\_attempts|TODO
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max\_check\_attempts|**Optional.** The number of times a service is re-checked before changing into a hard state. Defaults to 3.
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check\_period |**Optional.** The name of a time period which determines when this service should be checked. Not set by default.
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check\_interval |**Optional.** The check interval (in seconds).
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retry\_interval |**Optional.** The retry interval (in seconds). This is used when the service is in a soft state. Defaults to 1/5th of the check interval if not specified.
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check\_interval |**Optional.** The check interval (in seconds). This interval is used for checks when the service is in a *HARD* state. Defaults to 5 minutes.
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retry\_interval |**Optional.** The retry interval (in seconds). This interval is used for checks when the service is in a *SOFT* state. Defaults to 1/5th of the check interval if not specified.
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event\_command |**Optional.** The name of an event command that should be executed every time the service's state changes.
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flapping\_threshold|TODO
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volatile |TODO
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host\_dependencies|TODO
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service\_dependencies|TODO
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host_dependencies|**Optional.** A list of host names which this host depends on. These dependencies are used to determine whether the host is unreachable.
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service_dependencies|**Optional.** A list of services which this host depends on. Each array element must be a dictionary containing the keys "host" and "service". These dependencies are used to determine whether the host is unreachable.
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groups |**Optional.** The service groups this service belongs to.
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notifications |TODO
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@ -397,7 +397,8 @@ Example:
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database = "icinga",
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table_prefix = "icinga_",
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instance_name = "icinga2",
|
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instance_description = "icinga2 dev instance"
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instance_description = "icinga2 dev instance",
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cleanup = {
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downtimehistory_age = 48h,
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logentries_age = 31d,
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@ -420,22 +421,23 @@ Attributes:
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|||
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Cleanup Items:
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Name | Description
|
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----------------|----------------
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acknowledgement_age |**Optional.** Max age for acknowledgement table rows (entry_time)
|
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commenthistory_age |**Optional.** Max age for commenthistory table rows (entry_time)
|
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contactnotifications_age |**Optional.** Max age for contactnotifications table rows (start_time)
|
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contactnotificationmethods_age |**Optional.** Max age for contactnotificationmethods table rows (start_time)
|
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downtimehistory_age |**Optional.** Max age for downtimehistory table rows (entry_time)
|
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eventhandlers_age |**Optional.** Max age for eventhandlers table rows (start_time)
|
||||
externalcommands_age |**Optional.** Max age for externalcommands table rows (entry_time)
|
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flappinghistory_age |**Optional.** Max age for flappinghistory table rows (event_time)
|
||||
hostchecks_age |**Optional.** Max age for hostchecks table rows (start_time)
|
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logentries_age |**Optional.** Max age for logentries table rows (logentry_time)
|
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notifications_age |**Optional.** Max age for notifications table rows (start_time)
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processevents_age |**Optional.** Max age for processevents table rows (event_time)
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statehistory_age |**Optional.** Max age for statehistory table rows (state_time)
|
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servicechecks_age |**Optional.** Max age for servicechecks table rows (start_time)
|
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systemcommands_age |**Optional.** Max age for systemcommands table rows (start_time)
|
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acknowledgement_age |**Optional.** Max age for acknowledgement table rows (entry_time). Defaults to 0 (never).
|
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commenthistory_age |**Optional.** Max age for commenthistory table rows (entry_time). Defaults to 0 (never).
|
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contactnotifications_age |**Optional.** Max age for contactnotifications table rows (start_time). Defaults to 0 (never).
|
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contactnotificationmethods_age |**Optional.** Max age for contactnotificationmethods table rows (start_time). Defaults to 0 (never).
|
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downtimehistory_age |**Optional.** Max age for downtimehistory table rows (entry_time). Defaults to 0 (never).
|
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eventhandlers_age |**Optional.** Max age for eventhandlers table rows (start_time). Defaults to 0 (never).
|
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externalcommands_age |**Optional.** Max age for externalcommands table rows (entry_time). Defaults to 0 (never).
|
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flappinghistory_age |**Optional.** Max age for flappinghistory table rows (event_time). Defaults to 0 (never).
|
||||
hostchecks_age |**Optional.** Max age for hostchecks table rows (start_time). Defaults to 0 (never).
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||||
logentries_age |**Optional.** Max age for logentries table rows (logentry_time). Defaults to 0 (never).
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notifications_age |**Optional.** Max age for notifications table rows (start_time). Defaults to 0 (never).
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processevents_age |**Optional.** Max age for processevents table rows (event_time). Defaults to 0 (never).
|
||||
statehistory_age |**Optional.** Max age for statehistory table rows (state_time). Defaults to 0 (never).
|
||||
servicechecks_age |**Optional.** Max age for servicechecks table rows (start_time). Defaults to 0 (never).
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||||
systemcommands_age |**Optional.** Max age for systemcommands table rows (start_time). Defaults to 0 (never).
|
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### LiveStatusListener
|
||||
|
||||
|
|
@ -529,21 +531,27 @@ Attributes:
|
|||
|
||||
### CheckResultReader
|
||||
|
||||
TODO
|
||||
Reads Icinga 1.x check results from a directory. This functionality is provided
|
||||
to help existing Icinga 1.x users and might be useful for certain cluster
|
||||
scenarios.
|
||||
|
||||
Example:
|
||||
|
||||
TODO
|
||||
library "compat"
|
||||
|
||||
object CheckResultReader "reader" {
|
||||
spool_dir = "/data/check-results"
|
||||
}
|
||||
|
||||
Attributes:
|
||||
|
||||
Name |Description
|
||||
----------------|----------------
|
||||
spool\_dir |TODO
|
||||
spool\_dir |**Optional.** The directory which contains the check result files. Defaults to IcingaLocalStateDir + "/lib/icinga2/spool/checkresults/".
|
||||
|
||||
### CheckerComponent
|
||||
|
||||
TODO
|
||||
The checker component is responsible for scheduling active checks. There are no configurable options.
|
||||
|
||||
Example:
|
||||
|
||||
|
|
@ -553,7 +561,7 @@ Example:
|
|||
|
||||
### NotificationComponent
|
||||
|
||||
TODO
|
||||
The notification component is responsible for sending notifications. There are no configurable options.
|
||||
|
||||
Example:
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,46 @@
|
|||
## Icinga Template Library
|
||||
|
||||
TODO
|
||||
|
||||
### Overview
|
||||
|
||||
### Check Commands
|
||||
|
||||
#### ping4
|
||||
|
||||
#### ping6
|
||||
|
||||
#### dummy
|
||||
|
||||
#### tcp
|
||||
|
||||
#### udp
|
||||
|
||||
#### http_vhost
|
||||
|
||||
#### http_ip
|
||||
|
||||
#### https_vhost
|
||||
|
||||
#### https_ip
|
||||
|
||||
#### smtp
|
||||
|
||||
#### ssmtp
|
||||
|
||||
#### ntp_time
|
||||
|
||||
#### ssh
|
||||
|
||||
#### disk
|
||||
|
||||
#### users
|
||||
|
||||
#### processes
|
||||
|
||||
#### load
|
||||
|
||||
#### snmp
|
||||
|
||||
#### snmp-uptime
|
||||
|
||||
|
|
@ -1,5 +1,7 @@
|
|||
# Advanced Topics
|
||||
|
||||
## Time Periods
|
||||
|
||||
## External Commands
|
||||
|
||||
TODO
|
||||
Loading…
Reference in New Issue