Not tried myself but I think you can set serial to a percentage - there are a couple of examples here: https://blog.serverdensity.com/what-ive-learnt-from-using-ansible-exclusively-for-2-years/
Hope this helps, Jon On Friday, July 31, 2015 at 1:41:15 PM UTC+1, David Edmonds wrote: > > Hi, > > I'm working on a deployment playbook at the moment, for an application > made of multiple components running across multiple groups of servers. Most > of the servers are load-balanced, so we would like to do rolling upgrades > to these servers. > > At present, we've set serial to 1. This means we remove each server from > the load balancer, upgrade it, and put it back in to the load balancer. > What we'd like to do is increase the number of servers operated on to one > per group, as this would allow us to perform rolling upgrades when there > are dependencies between the applications. > > For example: > > Given groups > [web] => "web01", "web02" > [db] => "db01", "db02" > > We'd like to run: > > - Remove "web01" and "db01" from load balancer > - Upgrade "web01" and "db01" > - Restore "web01" and "db01" to load balancer > - Remove "web02" and "db02" from load balancer > - Upgrade "web02" and "db02" > - Restore "web02" and "db02" to load balancer > > Is there something that we can do to permit this in Ansible? > > Many thanks, > > David Edmonds > -- You received this message because you are subscribed to the Google Groups "Ansible Project" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/ansible-project/2f1287fd-9247-4d67-a181-74741c8084b7%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
