journalctl

-- Logs begin at Sat 2017-09-09 12:49:22 EDT, end at Sat 2017-09-09 20:13:34 EDT. --
Sep 09 20:13:26 server systemd[1]: Starting Docker Socket for the API.
-- Subject: Unit docker.socket has begun with start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit docker.socket has begun starting up.
Sep 09 20:13:26 server systemd[1]: Listening on Docker Socket for the API.
-- Subject: Unit docker.socket has finished start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit docker.socket has finished starting up.
--
-- The start-up result is done.
Sep 09 20:13:26 server systemd[1]: Starting Docker Application Container Engine...
-- Subject: Unit docker.service has begun with start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit docker.service has begun starting up.
Sep 09 20:13:26 server systemd[1]: docker.service start request repeated too quickly, refusing to start.
Sep 09 20:13:26 server systemd[1]: Failed to start Docker Application Container Engine.
-- Subject: Unit docker.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit docker.service has failed.
--
-- The result is failed.
Sep 09 20:13:26 server systemd[1]: Unit docker.service entered failed state.
Sep 09 20:13:28 server sshd[7928]: Failed password for root from 59.45.175.36 port 38991 ssh2
Sep 09 20:13:31 server sshd[7928]: Failed password for root from 59.45.175.36 port 38991 ssh2
Sep 09 20:13:34 server sshd[7928]: Received disconnect from 59.45.175.36: 11:  [preauth]
Sep 09 20:13:34 server sshd[7928]: PAM 2 more authentication failures; logname= uid=0 euid=0 tty=ssh ruser= rhost=59.45.175.36  user=root