Comment 3 for bug 1663584
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| Casey Marshall (cmars) wrote Re: metrics collection hook fails | #3 |
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73416ba
(Get the code!)
collect-metrics runs in a restricted hook context because it can execute concurrently with other "lifecycle" hooks. This prevents a long-running hook from interrupting data collection.
A workaround for this would be to set leadership (or other desired info) in charmhelpers unitdata, which is accessible from collect-metrics.
Longer term, we could look into allowing read-only hook tools to work in collect-metrics, with the caveat that it would be a point-in-time snapshot of a potentially changing state.