title: Mesosphere DC/OS installation: Post-Flight Failed
body: <p>folks, </p>
  
  <p>I was going on the RUNNING ROST-FLIGHT, the agent is completed, but the Master is error:</p>
  
  <p>I check using: 
  SSH to master:</p>
  
  <blockquote>
    <p>$journactl –u dcos-exhibitor -b</p>
  </blockquote>
  
  <pre><code>-- Logs begin at Tue 2016-04-19 15:38:32 CST, end at Wed 2016-04-20 14:38:16 CST. --
  Apr 20 12:40:31 worker02 systemd[1]: Started Exhibitor Zookeeper Supervisor.
  Apr 20 12:40:31 worker02 systemd[1]: Starting Exhibitor Zookeeper Supervisor...
  Apr 20 12:42:39 worker02 unshare[32443]: curl: (7) Failed to connect to 169.254.169.254 port 80: Connection timed out
  Apr 20 12:42:39 worker02 unshare[32443]: inet_aton exited with illegal IP address string passed to inet_aton.  is not a valid IPv4 address
  Apr 20 12:42:39 worker02 systemd[1]: dcos-exhibitor.service: main process exited, code=exited, status=1/FAILURE
  Apr 20 12:42:39 worker02 systemd[1]: Unit dcos-exhibitor.service entered failed state.
  Apr 20 12:42:39 worker02 systemd[1]: dcos-exhibitor.service failed.
  Apr 20 12:42:44 worker02 systemd[1]: dcos-exhibitor.service holdoff time over, scheduling restart.
  </code></pre>
  
  <blockquote>
    <p>$journactl –u dcos-mesos-master -b</p>
  </blockquote>
  
  <pre><code>-- Logs begin at Tue 2016-04-19 15:38:32 CST, end at Wed 2016-04-20 14:46:38 CST. --
  Apr 20 12:40:31 worker02 systemd[1]: Starting Mesos Master...
  Apr 20 12:40:31 worker02 exhibitor_wait.py[32438]: Could not get exhibitor status: http://127.0.0.1:8181/exhibitor/v1/cluster/status
  Apr 20 12:40:31 worker02 systemd[1]: dcos-mesos-master.service: control process exited, code=exited status=1
  Apr 20 12:40:31 worker02 systemd[1]: Failed to start Mesos Master.
  Apr 20 12:40:31 worker02 systemd[1]: Unit dcos-mesos-master.service entered failed state.
  Apr 20 12:40:31 worker02 systemd[1]: dcos-mesos-master.service failed.
  Apr 20 12:40:46 worker02 systemd[1]: dcos-mesos-master.service holdoff time over, scheduling restart.
  </code></pre>
  
  <blockquote>
    <p>$journalctl –u dcos-mesos-dns -b</p>
  </blockquote>
  
  <pre><code>Apr 20 12:41:00 worker02 mesos-dns[32467]: 2016/04/20 12:41:00 Failed to connect to 127.0.0.1:2181: dial tcp 127.0.0.1:2181: getsockopt: connection refused
  Apr 20 12:41:01 worker02 mesos-dns[32467]: ERROR: 2016/04/20 12:41:01 main.go:80: master detection timed out after 30s
  Apr 20 12:41:01 worker02 systemd[1]: dcos-mesos-dns.service: main process exited, code=exited, status=1/FAILURE
  Apr 20 12:41:01 worker02 systemd[1]: Unit dcos-mesos-dns.service entered failed state.
  Apr 20 12:41:01 worker02 systemd[1]: dcos-mesos-dns.service failed.
  Apr 20 12:41:06 worker02 systemd[1]: dcos-mesos-dns.service holdoff time over, scheduling restart.
  </code></pre>
  
  <blockquote>
    <p>$journalctl –u dcos-marathon -b</p>
  </blockquote>
  
  <pre><code>-- Logs begin at Tue 2016-04-19 15:38:32 CST, end at Wed 2016-04-20 14:50:30 CST. --
  Apr 20 12:40:31 worker02 systemd[1]: Starting Marathon...
  Apr 20 12:40:31 worker02 exhibitor_wait.py[32476]: Could not get exhibitor status: http://127.0.0.1:8181/exhibitor/v1/cluster/status
  Apr 20 12:40:32 worker02 systemd[1]: dcos-marathon.service: control process exited, code=exited status=1
  Apr 20 12:40:32 worker02 systemd[1]: Failed to start Marathon.
  Apr 20 12:40:32 worker02 systemd[1]: Unit dcos-marathon.service entered failed state.
  Apr 20 12:40:32 worker02 systemd[1]: dcos-marathon.service failed.
  Apr 20 12:40:47 worker02 systemd[1]: dcos-marathon.service holdoff time over, scheduling restart.
  </code></pre>
  
  <blockquote>
    <p>$journalctl –u dcos-nginx -b</p>
  </blockquote>
  
  <pre><code>-- Logs begin at Tue 2016-04-19 15:38:32 CST, end at Wed 2016-04-20 14:51:49 CST. --
  Apr 20 12:40:31 worker02 systemd[1]: Starting A high performance web server and a reverse proxy server...
  Apr 20 12:40:31 worker02 curl[32468]: curl: (7) Failed to connect to localhost port 8101: Connection refused
  Apr 20 12:40:31 worker02 systemd[1]: dcos-nginx.service: control process exited, code=exited status=7
  Apr 20 12:40:31 worker02 systemd[1]: Failed to start A high performance web server and a reverse proxy server.
  Apr 20 12:40:31 worker02 systemd[1]: Unit dcos-nginx.service entered failed state.
  Apr 20 12:40:31 worker02 systemd[1]: dcos-nginx.service failed.
  Apr 20 12:40:36 worker02 systemd[1]: dcos-nginx.service holdoff time over, scheduling restart.
  </code></pre>
  
  <blockquote>
    <p>$journalctl –u dcos-gen-resolvconf -b</p>
  </blockquote>
  
  <pre><code>-- Logs begin at Tue 2016-04-19 15:38:32 CST, end at Wed 2016-04-20 14:53:15 CST. --
  Apr 20 12:40:31 worker02 systemd[1]: Started Update systemd-resolved for mesos-dns.
  Apr 20 12:40:31 worker02 systemd[1]: Starting Update systemd-resolved for mesos-dns...
  Apr 20 12:40:36 worker02 gen_resolvconf.py[32439]: Skipping DNS server 15.242.100.56: no response
  Apr 20 12:41:32 worker02 systemd[1]: Started Update systemd-resolved for mesos-dns.
  Apr 20 12:42:44 worker02 gen_resolvconf.py[32439]: curl: (7) Failed to connect to 169.254.169.254 port 80: Connection timed out
  Apr 20 12:42:44 worker02 gen_resolvconf.py[32439]: inet_aton exited with illegal IP address string passed to inet_aton.  is not a valid IPv4 address
  Apr 20 12:42:44 worker02 systemd[1]: dcos-gen-resolvconf.service: main process exited, code=exited, status=1/FAILURE
  Apr 20 12:42:44 worker02 systemd[1]: Unit dcos-gen-resolvconf.service entered failed state.
  Apr 20 12:42:44 worker02 systemd[1]: dcos-gen-resolvconf.service failed.
  </code></pre>
  
  <p>And when SSH to agent :</p>
  
  <blockquote>
    <p>$journalctl –u dcos-mesos-slave -b</p>
  </blockquote>
  
  <pre><code>-- Logs begin at Tue 2016-04-19 15:32:51 CST, end at Wed 2016-04-20 14:55:23 CST. --
  Apr 20 13:06:50 worker03 systemd[1]: Starting Mesos Slave...
  Apr 20 13:06:51 worker03 ping[14893]: ping: unknown host leader.mesos
  Apr 20 13:06:51 worker03 systemd[1]: dcos-mesos-slave.service: control process exited, code=exited status=2
  Apr 20 13:06:51 worker03 systemd[1]: Failed to start Mesos Slave.
  Apr 20 13:06:51 worker03 systemd[1]: Unit dcos-mesos-slave.service entered failed state.
  Apr 20 13:06:51 worker03 systemd[1]: dcos-mesos-slave.service failed.
  Apr 20 13:06:56 worker03 systemd[1]: dcos-mesos-slave.service holdoff time over, scheduling restart.
  </code></pre>
  
  <p>I don’t know what’s going on. Do you have any idea? Thank you very much!</p>