OPERATIONAL DEFECT DATABASE
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First off, installing mongodb-org (3.0.1) worked without errors on Distributor ID: Debian Description: Debian GNU/Linux 7.8 (wheezy) Release: 7.8 Codename: wheezy and Distributor ID: Ubuntu Description: Ubuntu 12.04.5 LTS Release: 12.04 Codename: precise Since I wanted to test the WiredTiger engine I had to change the configuration file format to yaml: root@debian:/etc# cat mongod.conf systemLog: destination: file path: "/var/log/mongodb/mongodb.log" logAppend: true storage: dbPath: "/var/lib/mongodb" engine: wiredTiger journal: enabled: true processManagement: fork: true net: bindIp: 127.0.0.1 port: 27017 setParameter: enableLocalhostAuthBypass: true Now, the start script /etc/init.d/mongod fails because the PID it saves to cat /var/run/mongod.pid 10142 is wrong - that PID does not exist. And since the dpkg post-install and prerm scripts try to start / stop mongod they will fail and therefor any removal or upgrade to MongoDB 3.0.2 must also fail: Unpacking replacement mongodb-org ... Processing triggers for man-db ... Setting up libdpkg-perl (1.16.16) ... Setting up dpkg-dev (1.16.16) ... Setting up mongodb-org-shell (3.0.2) ... Setting up mongodb-org-server (3.0.2) ... [FAIL] Starting database: mongod failed! invoke-rc.d: initscript mongod, action "start" failed. dpkg: error processing mongodb-org-server (--configure): subprocess installed post-installation script returned error exit status 1 Setting up mongodb-org-mongos (3.0.2) ... Setting up mongodb-org-tools (3.0.2) ... dpkg: dependency problems prevent configuration of mongodb-org: mongodb-org depends on mongodb-org-server; however: Package mongodb-org-server is not configured yet. dpkg: error processing mongodb-org (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: mongodb-org-server mongodb-org E: Sub-process /usr/bin/dpkg returned an error code (1) Luckily, I was able to get a screenshot of what goes wrong: # ps -ef | grep mongodb root 9951 2 0 08:49 ? 00:00:00 [kworker/1:1] mongodb 10142 1 0 08:51 ? 00:00:00 /usr/bin/mongod --config /etc/mongod.conf mongodb 10144 10142 0 08:51 ? 00:00:00 /usr/bin/mongod --config /etc/mongod.conf mongodb 10145 10144 12 08:51 ? 00:00:04 /usr/bin/mongod --config /etc/mongod.conf root 10206 4584 0 08:52 pts/1 00:00:00 ps -ef root@debian:/var/lib# kill 10142 bash: kill: (10142) - No such process When using a yaml style config file and the WiredTiger storage engine the MongoDB init script starts a process whose PID is written to /var/run/mongod.pid. This process then starts the real mongod and terminates itself so that the PID inside /var/run/mongod.pid is now defunct. An easy workaround is to edit the init script and paste these two lines into /etc/init.d/mongod: start-stop-daemon --background --start --quiet --pidfile $PIDFILE \ --make-pidfile --chuid $DAEMONUSER \ --exec $NUMACTL $DAEMON $DAEMON_OPTS errcode=$? ######## next two lines added by scsynergy sleep 5 ps -ef | grep mongodb | grep -v grep | awk '{print $2}' > $PIDFILE We now save the correct PID to file and starting / stopping works - but it is not a pretty solution, just a workaround hack which needs to be improved.
scsynergy commented on Mon, 13 Apr 2015 06:50:20 +0000: Yes, removing the 'fork:true' solves the issue. Thank you very much. You might want to consider changing what is written on this page http://docs.mongodb.org/manual/reference/configuration-options/ so others do not trip over the same problem. (I only copied my configuration from there) ernie.hershey@10gen.com commented on Fri, 10 Apr 2015 13:31:08 +0000: scsynergy - I believe the problem is the "fork: true" in your new configuration file, which the init script and upstart configuration expect to be false, as it is in the configuration file distributed with the packages. If you take that out or set "fork: false" does it work better?
Install MongoDB 3.0.1 change to WiredTiger storage engine - which means you have to switch to the yaml style configuration. run apt-get update && apt-get upgrade mongodb-org will result in the following error: Unpacking replacement mongodb-org ... Processing triggers for man-db ... Setting up libdpkg-perl (1.16.16) ... Setting up dpkg-dev (1.16.16) ... Setting up mongodb-org-shell (3.0.2) ... Setting up mongodb-org-server (3.0.2) ... [FAIL] Starting database: mongod failed! invoke-rc.d: initscript mongod, action "start" failed. dpkg: error processing mongodb-org-server (--configure): subprocess installed post-installation script returned error exit status 1 Setting up mongodb-org-mongos (3.0.2) ... Setting up mongodb-org-tools (3.0.2) ... dpkg: dependency problems prevent configuration of mongodb-org: mongodb-org depends on mongodb-org-server; however: Package mongodb-org-server is not configured yet. dpkg: error processing mongodb-org (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: mongodb-org-server mongodb-org E: Sub-process /usr/bin/dpkg returned an error code (1)
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