What ports are required to be open on Ubuntu Cloud Guests running juju client instances? As far as I understand, Zookeeper needs to communicate with all its nodes -- So that is one requirement.. Anything else? Also what are the ports that are used by zookeeper? I need these so that I can put some security rules on my EC2 instances..
The following ports are used by juju
However, when you're using a provider like EC2 - juju bootstrap will open these ports for you, so there's no real need to manually edit the EC2 security group rulesets.
Also, noteably - juju no longer uses zookeeper since it has moved from python to GoLang.