Jira DC inside docker containers

Question

Hi all.

When i configure JiraDC in docker i got error

2018-10-25 14:18:56,306 localhost-startStop-1 ERROR      [c.a.jira.startup.ComponentContainerLauncher] A fatal error occurred during initialisation. JIRA has been locked.
net.sf.ehcache.CacheException: Problem starting listener for RMICachePeer //xxxxxx:40001/com.atlassian.jira.application.DefaultApplicationRoleManager.activeUsersCountForLicenseUnflushableCache. Initial cause was Exception creating connection to: xxxxxx; nested exception is:
    java.net.NoRouteToHostException: Host is unreachable (Host unreachable)

Help me please )

zellerm · Answer

We faced the same problem using docker-compose with setting the hostname.

After removing the hostname setting in the compose file, Jira started nicely in Data Center mode.

Somehow the hostname could not be resolved inside the container. So, when docker assigns it by itself the name resolution works.

We are also using a docker swarm overlay network between the docker hosts for cluster communication.

Михаил Малиновкин · Answer

Hello, Andrew.

We connected docker with Jira DC - use in your compose "network_mode: host" and all features work well (but without network isolation).

Andy Heinzer · Answer

I have only ever seen data center deployments on machines with ipv4 addresses.   I am not familiar with using a docker network, as you call it.   I would expect each node to have its own address that can be reached from the other nodes, but also from the same node.

In regards to your first error, it looks like even the first node cannot reach its own logical IP address with the network settings it has right now.  This is the first requirement.   By default the replication is running over port 40001.     I'm certainly not an expert on docker, but I did some searching and came across this post: https://github.com/moby/moby/issues/27817

It appears to detail a scenario that you might be facing where attempts to connect to the address from within the docker container can fail due to what appears to be some iptables rules.  Perhaps you can follow these same steps to get past this problem:

I can solve this by adding an iptables rule to allow connections from docker network to host:
$ sudo iptables -I INPUT 1 <interfacename-mynetwork> -j ACCEPT