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Depooling servers

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Revision as of 15:16, 2 February 2022 by imported>MVernon (correct path to conftool data (node not nodes))
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Contains various ways to depool different servers. In a glorious future, we'd just need to do conftool depool <service> <node> but we aren't there yet!

cp*** machines

These are the varnish frontends, and should be depooled via conftool. To fully depool a server, do as root on any puppetmaster frontend:

confctl select dc=<dc>,cluster=<cluster-name>,name=cp*** set/pooled=no

You can find out <cluster-name> from looking at conftool-data/node/ in the operations/puppet repository.

An easier option is to ssh into the server and just run

$ sudo -i depool

To re-pool, run:

$ sudo -i pool

Note the use of sudo -i. depool needs environment variables to get access to etcd.

mw* machines (and others)

The mw* application servers and other servers managed via pybal/etcd are depooled by using conftool. This is documented at