Public bug reported:
I'm using Juju rev.409 inside a VirtualBox machine running Oneiric.
I only use the local provider.
I'm able to bootstrap the environment and create a first unit.
But, I never managed to create a second unit (neither another unit from the
same service nor a unit from a different service).
The machine-agent.log file showed lots of errors related to the connection with
zookeeper :
2011-10-22
13:46:25,280:5297(0xb6f8bb70):ZOO_ERROR@handle_socket_error_msg@1528: Socket
[192.168.122.1:55580] zk retcode=-7, errno=110(Connection timed out):
connection timed out (exceeded timeout by 24ms)
2011-10-22 13:46:26,173:5297(0xb6f8bb70):ZOO_WARN@zookeeper_interest@1461:
Exceeded deadline by 1719ms
2011-10-22 13:46:29,512:5297(0xb6f8bb70):ZOO_WARN@zookeeper_interest@1461:
Exceeded deadline by 5056ms
2011-10-22 13:46:30,486:5297(0xb6f8bb70):ZOO_INFO@check_events@1585: initiated
connection to server [192.168.122.1:55580]
2011-10-22
13:46:36,240:5297(0xb6f8bb70):ZOO_ERROR@handle_socket_error_msg@1528: Socket
[192.168.122.1:55580] zk retcode=-7, errno=110(Connection timed out):
connection timed out (exceeded timeout by 1ms)
2011-10-22 13:46:36,431:5297(0xb6f8bb70):ZOO_WARN@zookeeper_interest@1461:
Exceeded deadline by 253ms
2011-10-22 13:46:39,986:5297(0xb6f8bb70):ZOO_WARN@zookeeper_interest@1461:
Exceeded deadline by 3768ms
2011-10-22 13:46:40,084:5297(0xb6f8bb70):ZOO_INFO@check_events@1585: initiated
connection to server [192.168.122.1:55580]
2011-10-22
13:46:41,146:5297(0xb6f8bb70):ZOO_ERROR@handle_socket_error_msg@1621: Socket
[192.168.122.1:55580] zk retcode=-112, errno=116(Stale NFS file handle):
sessionId=0x1332b4783a40001 has expired.
These errors occured during the instanciation of the first unit. After
the first unit was created, no new lines were appended to machine-
agent.log.
I changed the tickTime value from 2000 to 20000 in
/usr/share/pyshared/juju/lib/zk.py and my problem has gone :
- no more error messages
- I can now create another unit after the first one
The bahaviour I abserved should not occur on real hardware, but it may
be useful to be able to set this parameter in the environments.yaml
file.
Also, it would be nice if the machine agent could reconnect to zookeeper
in case the connection is lost for a moment.
** Affects: juju (Ubuntu)
Importance: Undecided
Status: New
** Project changed: juju => juju (Ubuntu)
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https://bugs.launchpad.net/bugs/880023
Title:
machine agent disconnects from zoopkeeper on heavy loads
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