python fabric with dynamic hosts/servers

Question

We have our deployment script with fabric, and it has a list of hosts:

 env.hosts = ['services', 'w1zA', 'w1zB']

but we have 2 more servers that are on and off when there is more pressure.

So I want my hosts variable to be:

 env.hosts = ['services', 'w1zA', 'w1zB', 'w2zA', 'w2zB']

but now when I run the script when the extra servers are off, the deployment fails because it can't connect to those servers.

How can I skip failures if server is off?

Answer 1

You can use env.skip_bad_hosts = True option.

Here is documentation about it: http://docs.fabfile.org/en/latest/usage/env.html#skip-bad-hosts