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Service restarts

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Revision as of 08:59, 12 November 2015 by imported>Muehlenhoff
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This page collects procedures to restart services (or reboot the underlying server) in the WMF production cluster.

Kafka brokers

One Kafka broker can be restarted/rebooted at a time. It needs to be ensured that all replicas arefully replicated. After restarting a broker a replica election should be performed.


We run four ntpd servers (chromium, hydrogen, acamar, achenar) and all of these are configured for use by the other servers in the cluster. As such, as long as only one server is restarted/rebooted at at time, everything is fine. The ntpd running locally on the individual servers can easily be restarted at any any time.