Depooling servers

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:

$ sudo 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

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

Re-pooling

Using the same example host from above, re-pooling the hosts consists of a similar command from the de-pooling:

$ sudo confctl select dc=<dc>,cluster=<cluster-name>,name=cp*** set/pooled=yes

Alternatively, ssh into the server and run

$ sudo -i pool