IPA: krb5kdc service is failing with error "Out of memory"

Issue

• IPA: krb5kdc service is failing with error "Out of memory".

[root@server1 ~]# grep -i oom /var/log/messages
Apr  9 05:00:54 server1 kernel: nagiosAgent invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=0
Apr  9 05:00:54 server1 kernel: nagiosAgent invoked oom-killer: gfp_mask=0x6200ca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=0
Apr  9 05:00:55 server1 kernel: oom_kill_process.cold.33+0xb/0x10
Apr  9 05:00:55 server1 kernel: oom_kill_process.cold.33+0xb/0x10
Apr  9 05:00:55 server1 kernel: [  pid  ]   uid  tgid total_vm      rss pgtables_bytes swapents oom_score_adj name
Apr  9 05:00:55 server1 kernel: [  pid  ]   uid  tgid total_vm      rss pgtables_bytes swapents oom_score_adj name
Apr  9 05:00:55 server1 kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/system.slice/krb5kdc.service,task=krb5kdc,pid=125224,uid=0
Apr  9 05:00:55 server1 kernel: Out of memory: Killed process 125224 (krb5kdc) total-vm:2657216kB, anon-rss:1910360kB, file-rss:0kB, shmem-rss:0kB, UID:0 pgtables:5172kB oom_score_adj:0
Apr  9 05:00:55 server1 kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/system.slice/krb5kdc.service,task=krb5kdc,pid=125224,uid=0
Apr  9 05:00:55 server1 kernel: Out of memory: Killed process 125224 (krb5kdc) total-vm:2657216kB, anon-rss:1910360kB, file-rss:0kB, shmem-rss:0kB, UID:0 pgtables:5172kB oom_score_adj:0