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That resolved the issue. I increased memory and everything is working well. Thank you for your help!

Here is the output you requested. Thanks [~]$ free -m total used free shared buffers cached Mem: 590 413 177 0 12 153 -/+ buffers/cache: 247 343 Swap: 255 16 239 [~]$ df -h Filesystem Size Used Avail Use% Mounted on rootfs 99G 2.8G 91G 3% / udev 276M 112K 276M 1% /dev tmpfs 296M 0 296M 0% /dev/shm /...

Those lines are in there. Apparently my previously posted cat output was cut off for some reason. Here are the contents of that file: [~]$ cat /usr/local/nagioslogserver/elasticsearch/config/elasticsearch.yml ##################### Elasticsearch Configuration Example ##################### # This file...

These are from the new EC2 image instance I installed, verified working from the image, and then ran the upgrade process. [~]$ cat /etc/*release* CentOS release 6.7 (Final) CentOS release 6.7 (Final) CentOS release 6.7 (Final) cpe:/o:centos:linux:6:GA [~]$ cat /usr/local/nagioslogserver/elasticsearc...

I am trying to upgrade the standard EC2 image instance to 1.4.0. I followed the upgrade instructions and the installation indicated it was successful, but elasticsearch database will not start and the following messages appear repeatedly on the console until a reboot. After reboot, the database rema...