proffalken · October 14, 2015 15:07
diff --git a/gistfile1.txt b/gistfile1.txt
 Ansible insists on using SystemD when running on Centos7, Docker and SystemD don't play well together, especially if you start to introduce DBUS into the mix as well (firewalld I'm looking at you!).

 This is totally understandable as Docker is effectively a replacement for systemd (I know that's not strictly accurate, but for now it will suffice!)

 The primary issue is that Ansible assumes that the process manager (upstart/sysV/SystemD) will be PID 1 and in Docker that's not going to be the case because it's a container meaning that we need to do shitty things like passing "use_docker" as an ansible extra var and then enable/disable in tasks appropriately, working around out testing infrastructure defeating the whole point of having it

 I don't doubt that Docker is great for testing standalone applications or containers where you are only running Apache/MySQL/whatever but to test Ansible plays seems to be difficult because Ansible expects to see a system process manager and Docker doesn't have one :simple_smile:
	Ansible insists on using SystemD when running on Centos7, Docker and SystemD don't play well together, especially if you start to introduce DBUS into the mix as well (firewalld I'm looking at you!).

	This is totally understandable as Docker is effectively a replacement for systemd (I know that's not strictly accurate, but for now it will suffice!)

	The primary issue is that Ansible assumes that the process manager (upstart/sysV/SystemD) will be PID 1 and in Docker that's not going to be the case because it's a container meaning that we need to do shitty things like passing "use_docker" as an ansible extra var and then enable/disable in tasks appropriately, working around out testing infrastructure defeating the whole point of having it

	I don't doubt that Docker is great for testing standalone applications or containers where you are only running Apache/MySQL/whatever but to test Ansible plays seems to be difficult because Ansible expects to see a system process manager and Docker doesn't have one :simple_smile: