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Update API documentation

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* Rename object types to config object types
* Add common config object attributes (e.g. version) overview
* add API references to troubleshooting
* add CheckResult and PerfdataValue value types (exposed via API)
* Update object types and their attributes

refs #9105
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Michael Friedrich 2015-11-01 13:41:25 +01:00
parent ed90d9a847
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34
doc/16-troubleshooting.md
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@ -37,6 +37,10 @@ and `debug`.
The `icinga2 object list` CLI command can be used to list all configuration objects and their
attributes. The tool also shows where each of the attributes was modified.
> **Tip**
>
> Use the Icinga 2 API to access [config objects at runtime](9-icinga2-api.md#icinga2-api-config-objects) directly.
That way you can also identify which objects have been created from your [apply rules](18-language-reference.md#apply).
# icinga2 object list
@ -115,6 +119,7 @@ or similar.
* Verify that failed depedencies do not prevent command execution
* Make sure that the plugin is executable by the Icinga 2 user (run a manual test)
* Make sure the [checker](8-cli-commands.md#enable-features) feature is enabled.
* Use the Icinga 2 API [event streams](9-icinga2-api.md#icinga2-api-event-streams) to receive live check result streams.
Examples:
@ -123,6 +128,10 @@ Examples:
# icinga2 feature enable checker
The feature 'checker' is already enabled.
Fetch all check result events matching the `event.service` name `random`:
$ 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'
## <a id="notifications-not-sent"></a> Notifications are not sent
@ -139,15 +148,22 @@ Verify the following configuration
* Make sure the [notification](8-cli-commands.md#enable-features) feature is enabled.
* Does the referenced NotificationCommand work when executed as Icinga user on the shell?
If notifications are to be sent via mail make sure that the mail program specified exists.
If notifications are to be sent via mail make sure that the mail program specified inside the
[NotificationCommand object](6-object-types.md#objecttype-notificationcommand) exists.
The name and location depends on the distribution so the preconfigured setting might have to be
changed on your system.
Examples:
# icinga2 feature enable notification
The feature 'notification' is already enabled.
You can use the Icinga 2 API [event streams](9-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'
## <a id="feature-not-working"></a> Feature is not working
* Make sure that the feature configuration is enabled by symlinking from `features-available/`
@ -175,7 +191,7 @@ did not properly escape the single dollar sign preventing its usage as [runtime
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}'.
## <a id="troubleshooting-cluster"></a> Cluster Troubleshooting
## <a id="troubleshooting-cluster"></a> Cluster and Clients Troubleshooting
This applies to anything using the cluster protocol:
@ -286,7 +302,7 @@ On SLES11 you'll need to use the `openssl1` command instead of `openssl`.
### <a id="troubleshooting-cluster-message-errors"></a> Cluster Troubleshooting Message Errors
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 zones and endpoints,
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](16-troubleshooting.md#troubleshooting-cluster-replay-log)
@ -306,8 +322,17 @@ the following (e.g. by invoking a forced check from the web interface):
* Referenced check plugin not found on the remote client.
* Runtime warnings and errors, e.g. unresolved runtime macros or configuration problems.
* Specific error messages are also populated into `UNKNOWN` check results including a detailed error message in their output.
* Verify the `check_source` object attribute. This is populated by the node executing the check.
* More verbose logs are found inside the [debug log](16-troubleshooting.md#troubleshooting-enable-debug-output).
* Use the Icinga 2 API [event streams](9-icinga2-api.md#icinga2-api-event-streams) to receive live check result streams.
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'
### <a id="troubleshooting-cluster-config-sync"></a> Cluster Troubleshooting Config Sync
If the cluster zones do not sync their configuration, make sure to check the following:
@ -318,6 +343,9 @@ If the cluster zones do not sync their configuration, make sure to check the fol
* The `icinga2.log` log file in `/var/log/icinga2` will indicate whether this ApiListener
[accepts config](13-distributed-monitoring-ha.md#zone-config-sync-permissions), or not.
Verify the object's [version](6-object-types.md#object-types) attribute on all nodes to
check whether the config update and reload was succesful or not.
### <a id="troubleshooting-cluster-check-results"></a> Cluster Troubleshooting Overdue Check Results
If your master does not receive check results (or any other events) from the child zones

2
doc/18-language-reference.md
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@ -43,7 +43,7 @@ Attribute | Description
name | The name of the object. This attribute can be modified in the object definition to override the name specified with the `object` directive.
type | The type of the object.
## Expressions
## <a id="expressions"></a> Expressions
The following expressions can be used on the right-hand side of assignments.

134
doc/6-object-types.md
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@ -1,11 +1,26 @@
# <a id="object-types"></a> Object Types
# <a id="object-types"></a> Config Object Types
This chapter provides an overview of all available object types which can be
This chapter provides an overview of all available config object types which can be
instantiated using the `object` keyword.
Additional details on configuration and runtime attributes and their
description are explained as well.
Config objects share these runtime attributes which cannot be
modified by the user. You can access these attributes using
the [Icinga 2 API](9-icinga2-api.md#icinga2-api-config-objects).
Name |Description
--------------------------|--------------------------
version | Timestamp when the object was created or modified. Synced throughout cluster nodes.
type | Object type.
original_attributes | Original values of object attributes modified at runtime.
active | Object is active (e.g. a service being checked).
paused | Object has been paused at runtime (e.g. [IdoMysqlConnection](6-object-types.md#objecttype-idomysqlconnection). Defaults to `false`.
templates | Templates imported on object compilation.
package | [Configuration package name](9-icinga2-api.md#icinga2-api-config-management) this object belongs to. Local configuration is set to `_etc`, runtime created objects use `_api`.
## <a id="objecttype-apilistener"></a> ApiListener
ApiListener objects are used for distributed monitoring setups
@ -586,8 +601,8 @@ Runtime Attributes:
last\_in\_downtime | Boolean | Whether the host was in a downtime when the last check occurred.
acknowledgement | Number | The acknowledgement type (0 = NONE, 1 = NORMAL, 2 = STICKY).
acknowledgement_expiry | Number | When the acknowledgement expires (as a UNIX timestamp; 0 = no expiry).
comments | Dictionary | The comments for this host.
downtimes | Dictionary | The downtimes for this host.
flapping_last_change | Number | When the last flapping change occurred (as a UNIX timestamp).
flapping | Boolean | Whether the host is flapping between states.
state | Number | The current state (0 = UP, 1 = DOWN).
last\_state | Number | The previous state (0 = UP, 1 = DOWN).
last\_hard\_state | Number | The last hard state (0 = UP, 1 = DOWN).
@ -733,26 +748,26 @@ Data Categories:
Name | Description | Required by
---------------------|------------------------|--------------------
DbCatConfig | Configuration data | Icinga Web/Reporting
DbCatState | Current state data | Icinga Web/Reporting
DbCatAcknowledgement | Acknowledgements | Icinga Web/Reporting
DbCatComment | Comments | Icinga Web/Reporting
DbCatDowntime | Downtimes | Icinga Web/Reporting
DbCatEventHandler | Event handler data | Icinga Web/Reporting
DbCatExternalCommand | External commands | Icinga Web/Reporting
DbCatFlapping | Flap detection data | Icinga Web/Reporting
DbCatConfig | Configuration data | Icinga Web 2
DbCatState | Current state data | Icinga Web 2
DbCatAcknowledgement | Acknowledgements | Icinga Web 2
DbCatComment | Comments | Icinga Web 2
DbCatDowntime | Downtimes | Icinga Web 2
DbCatEventHandler | Event handler data | Icinga Web 2
DbCatExternalCommand | External commands | Icinga Web 2
DbCatFlapping | Flap detection data | Icinga Web 2
DbCatCheck | Check results | --
DbCatLog | Log messages | Icinga Web/Reporting
DbCatNotification | Notifications | Icinga Web/Reporting
DbCatProgramStatus | Program status data | Icinga Web/Reporting
DbCatRetention | Retention data | Icinga Web/Reporting
DbCatStateHistory | Historical state data | Icinga Web/Reporting
DbCatLog | Log messages | Icinga Web 2
DbCatNotification | Notifications | Icinga Web 2
DbCatProgramStatus | Program status data | Icinga Web 2
DbCatRetention | Retention data | Icinga Web 2
DbCatStateHistory | Historical state data | Icinga Web 2
Multiple categories can be combined using the `|` operator. In addition to
the category flags listed above the `DbCatEverything` flag may be used as
a shortcut for listing all flags.
External interfaces like Icinga Web require everything except `DbCatCheck`
External interfaces like Icinga Web 2 require everything except `DbCatCheck`
which is the default value if `categories` is not set.
## <a id="objecttype-idopgsqlconnection"></a> IdoPgSqlConnection
@ -822,28 +837,29 @@ Data Categories:
Name | Description | Required by
---------------------|------------------------|--------------------
DbCatConfig | Configuration data | Icinga Web/Reporting
DbCatState | Current state data | Icinga Web/Reporting
DbCatAcknowledgement | Acknowledgements | Icinga Web/Reporting
DbCatComment | Comments | Icinga Web/Reporting
DbCatDowntime | Downtimes | Icinga Web/Reporting
DbCatEventHandler | Event handler data | Icinga Web/Reporting
DbCatExternalCommand | External commands | Icinga Web/Reporting
DbCatFlapping | Flap detection data | Icinga Web/Reporting
DbCatConfig | Configuration data | Icinga Web 2
DbCatState | Current state data | Icinga Web 2
DbCatAcknowledgement | Acknowledgements | Icinga Web 2
DbCatComment | Comments | Icinga Web 2
DbCatDowntime | Downtimes | Icinga Web 2
DbCatEventHandler | Event handler data | Icinga Web 2
DbCatExternalCommand | External commands | Icinga Web 2
DbCatFlapping | Flap detection data | Icinga Web 2
DbCatCheck | Check results | --
DbCatLog | Log messages | Icinga Web/Reporting
DbCatNotification | Notifications | Icinga Web/Reporting
DbCatProgramStatus | Program status data | Icinga Web/Reporting
DbCatRetention | Retention data | Icinga Web/Reporting
DbCatStateHistory | Historical state data | Icinga Web/Reporting
DbCatLog | Log messages | Icinga Web 2
DbCatNotification | Notifications | Icinga Web 2
DbCatProgramStatus | Program status data | Icinga Web 2
DbCatRetention | Retention data | Icinga Web 2
DbCatStateHistory | Historical state data | Icinga Web 2
Multiple categories can be combined using the `|` operator. In addition to
the category flags listed above the `DbCatEverything` flag may be used as
a shortcut for listing all flags.
External interfaces like Icinga Web require everything except `DbCatCheck`
External interfaces like Icinga Web 2 require everything except `DbCatCheck`
which is the default value if `categories` is not set.
## <a id="objecttype-livestatuslistener"></a> LiveStatusListener
Livestatus API interface available as TCP or UNIX socket. Historical table queries
@ -1200,8 +1216,8 @@ Runtime Attributes:
last\_in\_downtime | Boolean | Whether the service was in a downtime when the last check occurred.
acknowledgement | Number | The acknowledgement type (0 = NONE, 1 = NORMAL, 2 = STICKY).
acknowledgement_expiry | Number | When the acknowledgement expires (as a UNIX timestamp; 0 = no expiry).
comments | Dictionary | The comments for this service.
downtimes | Dictionary | The downtimes for this service.
flapping_last_change | Number | When the last flapping change occurred (as a UNIX timestamp).
flapping | Boolean | Whether the host is flapping between states.
state | Number | The current state (0 = OK, 1 = WARNING, 2 = CRITICAL, 3 = UNKNOWN).
last\_state | Number | The previous state (0 = OK, 1 = WARNING, 2 = CRITICAL, 3 = UNKNOWN).
last\_hard\_state | Number | The last hard state (0 = OK, 1 = WARNING, 2 = CRITICAL, 3 = UNKNOWN).
@ -1439,3 +1455,53 @@ Configuration Attributes:
endpoints |**Optional.** Dictionary with endpoints located in this zone.
parent |**Optional.** The name of the parent zone.
global |**Optional.** Whether configuration files for this zone should be synced to all endpoints. Defaults to false.
# <a id="value-types"></a> Value Types
In addition to [expressions](18-language-reference.md#expressions)
used in object attribute assignments such as
* [Numeric](18-language-reference.md#numeric-literals), [duration](8-language-reference.md#duration-literals), [string](18-language-reference.md#string-literals) and [boolean](18-language-reference.md#boolean-literals) literals
* [Array](18-language-reference.md#array)
* [Dictionary](18-language-reference.md#dictionary)
Icinga 2 uses the following value types for runtime attributes
exposed via the [Icinga 2 API](9-icinga2-api.md#icinga2-api).
## <a id="value-types-checkresult"></a> CheckResult
Name | Type | Description
--------------------------|---------------|-----------------
exit_status | Number | The exit status returned by the check execution.
output | String | The check output.
performance_data | Array | Array of [performance data values](6-object-types.md#value-types-perfdatavalue).
check_source | String | Name of the node executing the check.
state | Number | The current state (0 = OK, 1 = WARNING, 2 = CRITICAL, 3 = UNKNOWN).
command | Value | Array of command with shell-escaped arguments or command line string.
execution_start | Number | Check execution start time (as a UNIX timestamp).
execution_end | Number | Check execution end time (as a UNIX timestamp).
schedule_start | Number | Scheduled check execution start time (as a UNIX timestamp).
schedule_end | Number | Scheduled check execution end time (as a UNIX timestamp).
active | Boolean | Whether the result is from an active or passive check.
vars_before | Dictionary | Internal attribute used for calculations.
vars_after | Dictionary | Internal attribute used for calculations.
## <a id="value-types-perfdatavalue"></a> PerfdataValue
Icinga 2 parses performance data strings and exposes
the object to external interfaces (e.g. [GraphiteWriter](6-object-types.md#objecttype-graphitewriter) or the [Icinga 2 API](9-icinga2-api.md#icinga2-api)).
Name | Type | Description
--------------------------|---------------|-----------------
label | String | Performance data label.
value | Number | Normalized performance data value without unit.
counter | Boolean | Enabled if the original value contains `c` as unit. Defaults to `false`.
unit | String | Unit of measurement (`seconds`, `bytes`. `percent`) according to the [plugin API](14-addons-plugins.md#plugin-api).
crit | Value | Critical threshold value.
warn | Value | Warning threshold value.
min | Value | Minimum value returned by the check.
max | Value | Maximum value returned by the check.