ES node unable to start again


I have a node which is unable to connect to other nodes of the cluster
(probably because they are running out of file descriptors).

I try to shutdown that node with

service elasticsearch stop

  • Stopping Elasticsearch Server

But I can still see the process if I do:

ps aux | grep elast

And actually in the ElasticSearch log there is no log line related to the

I can wait several minutes, but still the process stays there.

If I kill it, either with SIGTERM or SIGKILL and then I try to run ES
again, I get:

/usr/share/elasticsearch/bin/elasticsearch -p /var/run/

--default.path.conf=/etc/elasticsearch -Des.max-open-files=true
log4j:WARN No such property [datePattern] in
log4j:ERROR Could not find value for key
log4j:ERROR Could not instantiate appender named
log4j:ERROR Could not find value for key
log4j:ERROR Could not instantiate appender named

and the process stucks there.

If I reboot the instance I arrive to the same point. I have to terminate
that instance and create a new one, reinstalling ES.

It is ES 1.4.4 on Ubuntu 14.04 amd64 kernel 3.13.0-44-generic.

For me it seems like ES in a loop trying to discover a master, and it is
unresponsive to anything else. I didn't try to shut it down via the
Shutdown API.

Thanks for any help.

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