[ClusterLabs] Coming in 1.1.15: Event-driven alerts

[Klaus Wenninger]

On 04/27/2016 12:12 PM, Kristoffer Grönlund wrote:
> Ken Gaillot <kgaillot at redhat.com> writes:
>
>> The most prominent feature will be Klaus Wenninger's new implementation
>> of event-driven alerts -- the ability to call scripts whenever
>> interesting events occur (nodes joining/leaving, resources
>> starting/stopping, etc.).
>>
>> This is the improved successor to both the ClusterMon resource agent and
>> the experimental "notification-agent" feature that has been in the
>> upstream master branch.
>>
>> The new feature was renamed to "alerts" to avoid confusion with the
>> unrelated "notify" resource action.
>>
>> High-level tools such as crm and pcs should eventually provide an easy
>> way to configure this, but at the XML level, the cluster configuration
>> may now contain an alerts section:
> There is now a branch with experimental early support for configuring
> alerts in crmsh:
>
> https://github.com/ClusterLabs/crmsh/pull/136
>
> Proposed syntax right now looks like this:
>
>     alert <id> <path>              \
>         [attribute <nvpair> ...]   \
>         [meta <nvpair> ...]        \
>         [to <recipient             \
>           [attribute <nvpair> ...] \
>           [meta <nvpair> ...] ...]
>
> Example:
>
>     alert alert-1 /srv/pacemaker/pcmk_alert_sample.sh \
>         to /var/log/cluster-alerts.log
Are (and if yes how) you planning to handle multiple recipients?
>
> Opinions / suggestions are more than welcome!
>
> I'll hold off merging this until the feature stabilises in the pacemaker
> repository.
Although support by high-level tooling increases the amount of feedback
which in turn should speed up the stabilization process ;-)
>
> Cheers,
> Kristoffer
>