[dev.icinga.com #6743] Better explanation for HA config cluster

[icinga-migration]

This issue has been migrated from Redmine: https://dev.icinga.com/issues/6743

Created by mfriedrich on 2014-07-16 10:57:47 +00:00

Assignee: mfriedrich
Status: Resolved (closed on 2014-08-24 09:25:04 +00:00)
Target Version: 2.1.0
Last Update: 2014-09-16 09:22:14 +00:00 (in Redmine)

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There is some misunderstanding how HA zones work, especially where to put the configuration.

1. one instance has /etc/icinga2/zones.d/ populated and syncs/validates that into /var/lib/icinga2/api/zones/
2. all other instances get the configuration synced (if apilistener accept_config = true) from /var/lib... to /var/lib/... (user won't see it)
3. if the config "master" dies, all remaining instances still got the current configuration in /var/lib and continue to run (they elect a new zone master doing the primary event processing)
4. if the previous config master died hard, one can manually copy the configuration from /var/lib... to /etc/icinga2/zones.d/ and make this one the new config master

Possible problems:

• empty zonename directory on the "slaves", such as /etc/icinga2/zones.d/config-ha-master, causing configsync ping pong
• all instances have zones.d populated and try to sync each other
• config master vs zone master (not the same, first one is static by putting the zones.d config, the second one dynamically elected)

Feedback
http://www.monitoring-portal.org/wbb/index.php?page=Thread&postID=206124#post206124
http://www.monitoring-portal.org/wbb/index.php?page=Thread&threadID=31250
https://lists.icinga.org/pipermail/icinga-users/2014-July/008328.html

Changesets

2014-08-24 09:21:54 +00:00 by mfriedrich 32c2013

Documentation: Rewrite cluster docs

* Re-organize structure
* New section with HA features
* Permissions and security
* How to add a new node
* Cluster requirements
* Additional hints on installation
* More troubleshooting

fixes #6743
fixes #6703
fixes #6997

2014-08-27 09:48:44 +00:00 by (unknown) 0ce727e

Documentation: Additional cluster hints, better formatting

refs #6743
refs #6703
refs #6997

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Relations:

• relates #6743
• relates #6743

[icinga-migration]

Updated by gbeutner on 2014-08-08 09:23:33 +00:00

• Target Version set to 2.1.0

[icinga-migration]

Updated by mfriedrich on 2014-08-24 09:25:04 +00:00

• Status changed from New to Resolved
• Done % changed from 0 to 100

Applied in changeset i2:32c20132d014c9735483e1475e0c9864f8290e29.

[icinga-migration]

Updated by mfriedrich on 2014-08-27 14:35:42 +00:00

• Relates set to 7010

[icinga-migration]

Updated by mfriedrich on 2014-09-16 09:22:14 +00:00

• Project changed from 42 to Icinga 2
• Category set to Documentation