If you can figure out which ones they are, that's what's running it OOM - it killed two of them yesterday
Feb 5 22:33:38 arialis kernel: oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=a9ec7aa2e1dadd1fa6c282acbce5a61428e03f6427ebe5eeef5e8cbe21cf2118,mems_allowed=0-1,oom_memcg=/docker/a9ec7aa2e1dadd1fa6c282acbce5a61428e03f6427ebe5eeef5e8cbe21cf2118,task_memcg=/docker/a9ec7aa2e1dadd1fa6c282acbce5a61428e03f6427ebe5eeef5e8cbe21cf2118,task=java,pid=17304,uid=988
Feb 5 22:33:38 arialis kernel: Memory cgroup out of memory: Killed process 17304 (java) total-vm:22928132kB, anon-rss:6264592kB, file-rss:0kB, shmem-rss:64kB, UID:988 pgtables:14240kB oom_score_adj:0
Feb 5 22:54:59 arialis kernel: oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=267f51398ba53554d26eae3fb5106c73d8d91bffaecddb18b01b4c4515f756c4,mems_allowed=0-1,oom_memcg=/docker/267f51398ba53554d26eae3fb5106c73d8d91bffaecddb18b01b4c4515f756c4,task_memcg=/docker/267f51398ba53554d26eae3fb5106c73d8d91bffaecddb18b01b4c4515f756c4,task=java,pid=17894,uid=988
Feb 5 22:54:59 arialis kernel: Memory cgroup out of memory: Killed process 17894 (java) total-vm:22835064kB, anon-rss:6271064kB, file-rss:0kB, shmem-rss:64kB, UID:988 pgtables:14176kB oom_score_adj:0