mongod: unrecognized service , mongod.service is present already

other services like apache2, etc are working fine. But when I type sudo service mongod start I get this error:

mongod: unrecognized service

I have this file:

/lib/systemd/system/mongod.service 

It says this:

[Unit]
Description=High-performance, schema-free document-oriented database
After=network.target
Documentation=
[Service]
User=mongodb
Group=mongodb
ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf
# file size
LimitFSIZE=infinity
# cpu time
LimitCPU=infinity
# virtual memory size
LimitAS=infinity
# open files
LimitNOFILE=64000
# processes/threads
LimitNPROC=64000
# total threads (user+kernel)
TasksMax=infinity
TasksAccounting=false
# Recommended limits for for mongod as specified in
#
[Install]
WantedBy=multi-user.target

2

3 Answers

I had the same problem after pulling the ubuntu:17:04 docker image and installing mongodb-org

It looks like Mongodb created a systemd startup file which was already replaced by upstart.

As a workaround:

1. Create a new file /etc/init/mongod.conf (requires sudo rights). You can use: sudo gedit /etc/init/mongod.conf

2. Paste the following contents into the newly created upstart file:

   # Ubuntu upstart file at /etc/init/mongod.conf
   # Recommended ulimit values for mongod or mongos
   # See
   #
   limit fsize unlimited unlimited
   limit cpu unlimited unlimited
   limit as unlimited unlimited
   limit nofile 64000 64000
   limit rss unlimited unlimited
   limit nproc 64000 64000
   kill timeout 300 # wait 300s between SIGTERM and SIGKILL.
   pre-start script DAEMONUSER=${DAEMONUSER:-mongodb} if [ ! -d /var/lib/mongodb ]; then mkdir -p /var/lib/mongodb && chown mongodb:mongodb /var/lib/mongodb fi if [ ! -d /var/log/mongodb ]; then mkdir -p /var/log/mongodb && chown mongodb:mongodb /var/log/mongodb fi touch /var/run/mongodb.pid chown $DAEMONUSER /var/run/mongodb.pid
   end script
   start on runlevel [2345]
   stop on runlevel [06]
   script ENABLE_MONGOD="yes" CONF=/etc/mongod.conf DAEMON=/usr/bin/mongod DAEMONUSER=${DAEMONUSER:-mongodb} DAEMONGROUP=${DAEMONGROUP:-mongodb} if [ -f /etc/default/mongod ]; then . /etc/default/mongod; fi # Handle NUMA access to CPUs (SERVER-3574) # This verifies the existence of numactl as well as testing that the command works NUMACTL_ARGS="--interleave=all" if which numactl >/dev/null 2>/dev/null && numactl $NUMACTL_ARGS ls / >/dev/null 2>/dev/null then NUMACTL="$(which numactl) -- $NUMACTL_ARGS" DAEMON_OPTS=${DAEMON_OPTS:-"--config $CONF"} else NUMACTL="" DAEMON_OPTS="-- "${DAEMON_OPTS:-"--config $CONF"} fi if [ "x$ENABLE_MONGOD" = "xyes" ] then exec start-stop-daemon --start \ --chuid $DAEMONUSER:$DAEMONGROUP \ --pidfile /var/run/mongodb.pid \ --make-pidfile \ --exec $NUMACTL $DAEMON $DAEMON_OPTS fi
   end script

3. Now, you can use the following commands:

   sudo service mongod start

   sudo service mongod stop

   sudo service mongod status

reference:

1

I kept getting the same error when trying to start the mongo service. mongod worked, but then I need to keep one terminal window open to use mongo in another. nothing else worked for me except this:

'mongod --fork --logpath /var/log/mongodb.log'

Above command starts the mongo daemon if you don't already have it started and then you can just type 'mongo' in command line and mongo works

(from here: )

1

I removed mongo lock file first

sudo rm /var/lib/mongodb/mongod.lock

then started the mongod using the following command

sudo mongod --fork -f /etc/mongod.conf

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