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Do not allow the master to join twice

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If the poller master doesn't complete in time and ends up with overlapping jobs, neither job will ever complete because both running jobs will think they are the master and wait for the remaining node to exit.
This commit is contained in:
Clint Armstrong
2015-07-02 15:30:57 -04:00
parent 7d6dbe4d9b
commit fd0617acca
1 changed files with 4 additions and 1 deletions
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5
poller-wrapper.py
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@ -133,6 +133,9 @@ if ('distributed_poller' in config and
import uuid
memc = memcache.Client([config['distributed_poller_memcached_host'] + ':' +
str(config['distributed_poller_memcached_port'])])
if str(memc.get("poller.master")) == config['distributed_poller_name']:
print "This sytem is already joined as the poller master."
sys.exit(2)
if memc_alive():
if memc.get("poller.master") is None:
print "Registered as Master"
@ -148,7 +151,7 @@ if ('distributed_poller' in config and
print "Could not connect to memcached, disabling distributed poller."
distpoll = False
IsNode = False
except:
except ImportError:
print "ERROR: missing memcache python module:"
print "On deb systems: apt-get install python-memcache"
print "On other systems: easy_install python-memcached"