Suggested-by: Hannes Dürr <[email protected]> Signed-off-by: Daniel Kral <[email protected]> --- I only included some of the suggestions for the rule conflicts & errors part from Hannes for now as these are more important to be correct and understandable for the release.
ha-manager.adoc | 29 ++++++++++------------------- 1 file changed, 10 insertions(+), 19 deletions(-) diff --git a/ha-manager.adoc b/ha-manager.adoc index 77d7a65..d6ac75d 100644 --- a/ha-manager.adoc +++ b/ha-manager.adoc @@ -849,34 +849,25 @@ Rule Conflicts and Errors HA rules can impose rather complex constraints on the HA resources. To ensure that a new or modified HA rule does not introduce uncertainty into the HA stack's CRS scheduler, HA rules are tested for feasibility before these are -applied. If a rule does fail any of these tests, the rule is disabled until the -conflicts and errors is resolved. +applied. For any rules that fail these tests, these rules are disabled until +the conflicts and errors have been resolved. Currently, HA rules are checked for the following feasibility tests: -* A HA resource can only be referenced by a single HA node affinity rule in - total. If two or more HA node affinity rules specify the same HA resource, - these HA node affinity rules will be disabled. +* An HA resource can only be part of a single HA node affinity rule. -* A HA resource affinity rule must specify at least two HA resources to be - feasible. If a HA resource affinity rule specifies only one HA resource, the - HA resource affinity rule will be disabled. +* An HA resource affinity rule must have at least two HA resources. -* A HA resource affinity rule must specify no more HA resources than there are - nodes in the cluster. If a HA resource affinity rule specifies more HA - resources than there are in the cluster, the HA resource affinity rule will - be disabled. +* A negative HA resource affinity rule cannot specify more HA resources than + there are nodes in the cluster. Otherwise, the HA resources do not have + enough nodes to be separated. * A positive HA resource affinity rule cannot specify the same two or more HA resources as a negative HA resources affinity rule. That is, two or more HA - resources cannot be kept together and separate at the same time. If any pair - of positive and negative HA resource affinity rules do specify the same two - or more HA resources, both HA resource affinity rules will be disabled. + resources cannot be kept together and separate at the same time. -* A HA resource can only be referenced by either a HA node affinity rule or HA - resource affinity rules, but not both at the same time. If there is at least - one HA node affinity rule and at least one HA resource affinity rule, which - specify the same HA resource, these rules will be disabled. +* A HA resource can only be part of either a HA node affinity rule or HA + resource affinity rules, but not both at the same time. [[ha_manager_fencing]] Fencing -- 2.47.2 _______________________________________________ pve-devel mailing list [email protected] https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
