Using bulk metrics for the log counters reduces largely the likelihood
of blocking the Heka pipeline. Instead of injecting (x services
* y levels) metric messages, the filter injects only one big message.
This changes also updates the configuration of the metric_collector
service to deserialize the bulk metric to support alarms on log
counters.
Change-Id: Icb71fd6faa4191795c0470ecc24aeafd25794f42
Closes-Bug: #1643280
This change adds a filter plugin that monitors the kernel log messages
for hard drive errors and reports the number of errors per second
as 'hdd_errors_rate'. The filter is configured for all nodes,
irrespective of their roles. An alarm is also added that triggers
a CRITICAL alert when the metric value is greater than 0.
DocImpact
Change-Id: I485f5692a3e5facf0f7ea019ccdbd70683a7dd4e
Andreas Jaeger