Details
Major Description
The mesos-slave is launched as
- /usr/local/sbin/mesos-slave --master=zk://10.0.0.1:2181,10.0.0.2:2181,10.0.0.3:2181/mesos --ip=10.0.0.2 --log_dir=/var/log/mesos --attributes=node_id:srv002 --checkpoint --containerizers=docker --executor_registration_timeout=5mins --logging_level=INFO
giving this output:
I0127 19:26:32.674113 19880 logging.cpp:172] INFO level logging started!
I0127 19:26:32.674741 19880 main.cpp:142] Build: 2014-11-22 05:29:57 by root
I0127 19:26:32.674774 19880 main.cpp:144] Version: 0.21.0
I0127 19:26:32.674799 19880 main.cpp:147] Git tag: 0.21.0
I0127 19:26:32.674824 19880 main.cpp:151] Git SHA: ab8fa655d34e8e15a4290422df38a18db1c09b5b
I0127 19:26:32.786731 19880 main.cpp:165] Starting Mesos slave
2015-01-27 19:26:32,786:19880(0x7fcf0cf9f700):ZOO_INFO@log_env@712: Client environment:zookeeper.version=zookeeper C client 3.4.5
2015-01-27 19:26:32,786:19880(0x7fcf0cf9f700):ZOO_INFO@log_env@716: Client environment:host.name=srv002
2015-01-27 19:26:32,787:19880(0x7fcf0cf9f700):ZOO_INFO@log_env@723: Client environment:os.name=Linux
2015-01-27 19:26:32,787:19880(0x7fcf0cf9f700):ZOO_INFO@log_env@724: Client environment:os.arch=3.13.0-44-generic
2015-01-27 19:26:32,787:19880(0x7fcf0cf9f700):ZOO_INFO@log_env@725: Client environment:os.version=#73-Ubuntu SMP Tue Dec 16 00:22:43 UTC 2014
2015-01-27 19:26:32,788:19880(0x7fcf0cf9f700):ZOO_INFO@log_env@733: Client environment:user.name=root
2015-01-27 19:26:32,788:19880(0x7fcf0cf9f700):ZOO_INFO@log_env@741: Client environment:user.home=/root
2015-01-27 19:26:32,788:19880(0x7fcf0cf9f700):ZOO_INFO@log_env@753: Client environment:user.dir=/root
2015-01-27 19:26:32,789:19880(0x7fcf0cf9f700):ZOO_INFO@zookeeper_init@786: Initiating client connection, host=10.0.0.1:2181,10.0.0.2:2181,10.0.0.3:2181 sessionTimeout=10000 watcher=0x7fcf13592a0a sessionId=0 sessionPasswd=<null> context=0x7fceec0009e0 flags=0
I0127 19:26:32.796588 19880 slave.cpp:169] Slave started on 1)@10.0.0.2:5051
I0127 19:26:32.797345 19880 slave.cpp:289] Slave resources: cpus
:8; mem:6960; disk:246731; ports:[31000-32000]
I0127 19:26:32.798017 19880 slave.cpp:318] Slave hostname: srv002
I0127 19:26:32.798076 19880 slave.cpp:319] Slave checkpoint: true
2015-01-27 19:26:32,800:19880(0x7fcf08f5c700):ZOO_INFO@check_events@1703: initiated connection to server [10.0.0.1:2181]
I0127 19:26:32.808229 19886 state.cpp:33] Recovering state from '/tmp/mesos/meta'
I0127 19:26:32.809090 19882 status_update_manager.cpp:197] Recovering status update manager
I0127 19:26:32.809677 19887 docker.cpp:767] Recovering Docker containers
2015-01-27 19:26:32,821:19880(0x7fcf08f5c700):ZOO_INFO@check_events@1750: session establishment complete on server [10.0.0.1:2181], sessionId=0x14b2adf7a560106, negotiated timeout=10000
I0127 19:26:32.823292 19885 group.cpp:313] Group process (group(1)@10.0.0.2:5051) connected to ZooKeeper
I0127 19:26:32.823443 19885 group.cpp:790] Syncing group operations: queue size (joins, cancels, datas) = (0, 0, 0)
I0127 19:26:32.823484 19885 group.cpp:385] Trying to create path '/mesos' in ZooKeeper
I0127 19:26:32.829711 19882 detector.cpp:138] Detected a new leader: (id='143')
I0127 19:26:32.830559 19882 group.cpp:659] Trying to get '/mesos/info_0000000143' in ZooKeeper
I0127 19:26:32.837913 19886 detector.cpp:433] A new leading master (UPID=master@10.0.0.1:5050) is detected
Failed to perform recovery: Collect failed: Failed to create pipe: Too many open files
To remedy this do as follows:
Step 1: rm -f /tmp/mesos/meta/slaves/latest
This ensures slave doesn't recover old live executors.
Step 2: Restart the slave.
At /tmp/mesos/meta/slaves/latest there is nothing.
The slave was part of a 3 node cluster before.
When started as an upstart service, the process is relaunched all the time and a large number of defunct processes appear, like these ones:
root 30321 0.0 0.0 13000 440 ? S 19:28 0:00 iptables --wait -L -n
root 30322 0.0 0.0 4444 396 ? S 19:28 0:00 sh -c docker inspect mesos-e1f538b4-993a-4cd4-99b0-d633c5e9dd55
root 30328 0.0 0.0 0 0 ? Z 19:28 0:00 [sh] <defunct>