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PostPosted: Wed Jan 09, 2019 3:54 am Post subject: Broker directory deleted itself Reply with quote


Joined: 13 Jun 2016
Posts: 35

/var/mqsi/components/broker_name is the default directory that the broker called broker_name stores its configuration information, as far as I am aware. Below this directory are the pid directories containing execution group information, stdout/stderr, as well as other things.

I don't know if it's relevant to the issue we're seeing, but we have this directory in a different location for our brokers: (/var/broker_name/data/mqsi/components/broker_name).

We are using IIB, and multi-instancing (so all the directories are on the same H N A S with different mounts). We have eight brokers, so /var/broker_name_1, /var/broker_name_2, etc. are each mount points; with directories /data/mqsi/components/broker_name_n below that.

Yesterday afternoon, the directory /var/broker_name_n/data/mqsi/components/broker_name_n disappeared from the file system for two of the brokers. The directory /var/broker_name_n/data/mqsi/components still exists; but the broker_name_n directory below components disappeared.

Because the processes are running in memory, the broker and applications on the execution groups carried on working until we restarted one of the brokers; at which point all of the execution groups disappeared. The other broker was still running, so I looked and saw that the directory was missing. restarting the broker recreated it, but not the execution groups.

Is this behaviour something that anyone has seen before? Could this be caused by something in IIB; or is it likely to be something on the system that caused this to happen? It's weird that it was that specific directory on both of the servers, if it's a file-system issue.

in /var/log/messages, we don't see any issues; except for errors because different processes can't find the files they need - e.g. BIP3108S: Unable to initialize the listener environment. Exception text getListenerParametersFromFile: /var/broker_name_1/data/mqsi/components/broker_name_1/config/wsplugin6.conf (No such file or directory)

Is there any way to recover from this in IIB without reinstalling everything?
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