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Update documentation for DB IDO HA Run-Once 

fixes #8680
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Michael Friedrich 2015-03-11 14:06:01 +01:00
parent 44114232d3
commit 442078f5ac
1 changed files with 7 additions and 6 deletions
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13
doc/12-distributed-monitoring-ha.md
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@ -718,21 +718,22 @@ Example DB IDO MySQL:
# icinga2 feature enable ido-mysql # icinga2 feature enable ido-mysql
The feature 'ido-mysql' is already enabled. The feature 'ido-mysql' is already enabled.
By default the DB IDO feature only runs on the elected zone master. All other passive By default the DB IDO feature only runs on one node. All other nodes in the same zone disable
nodes disable the active IDO database connection at runtime. the active IDO database connection at runtime. The node with the active DB IDO connection is
not necessarily the zone master.
> **Note** > **Note**
> >
> The DB IDO HA feature can be disabled by setting the `enable_ha` attribute to `false` > The DB IDO HA feature can be disabled by setting the `enable_ha` attribute to `false`
> for the [IdoMysqlConnection](6-object-types.md#objecttype-idomysqlconnection) or > for the [IdoMysqlConnection](6-object-types.md#objecttype-idomysqlconnection) or
> [IdoPgsqlConnection](6-object-types.md#objecttype-idopgsqlconnection) object on all nodes in the > [IdoPgsqlConnection](6-object-types.md#objecttype-idopgsqlconnection) object on **all** nodes in the
> same zone. > **same** zone.
> >
> All endpoints will enable the DB IDO feature then, connect to the configured > All endpoints will enable the DB IDO feature and connect to the configured
> database and dump configuration, status and historical data on their own. > database and dump configuration, status and historical data on their own.
If the instance with the active DB IDO connection dies, the HA functionality will If the instance with the active DB IDO connection dies, the HA functionality will
re-enable the DB IDO connection on the newly elected zone master. automatically elect a new DB IDO master.
The DB IDO feature will try to determine which cluster endpoint is currently writing The DB IDO feature will try to determine which cluster endpoint is currently writing
to the database and bail out if another endpoint is active. You can manually verify that to the database and bail out if another endpoint is active. You can manually verify that