Not the answer you need?
Register and ask your own question!

mongod instance restart not working

ashenoy9ashenoy9 EntrantCurrent User Role Novice
I installed Percona for mongodb and they seem to work fine as a standalone instance. However, when I try to create a replica set , the startup is failing with the below message. It is not taking the parameter changes in mongod.conf too well (defaults work fine) I have set the ownerships correctly , included the BindIP to private IP, added the /etc/hosts . Can anyone guide me through this. I am currently trying to setup a 3 node replica set on GCP and stuck with this.

My VMs are on Linux mongo-1 4.9.0-12-amd64 #1 SMP Debian 4.9.210-1 (2020-01-20) x86_64 GNU/Linux.


Status after restart :

service mongod status
● mongod.service - High-performance, schema-free document-oriented database
Loaded: loaded (/lib/systemd/system/mongod.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Tue 2020-03-10 06:47:05 UTC; 10h ago
Process: 12375 ExecStart=/usr/bin/env bash -c ${NUMACTL} /usr/bin/mongod ${OPTIONS} > ${STDOUT} 2> ${STDERR} (code=exited, status=2)
Process: 12356 ExecStartPre=/usr/bin/percona-server-mongodb-helper.sh (code=exited, status=0/SUCCESS)
Main PID: 3626 (code=exited, status=0/SUCCESS)

Mar 10 06:47:05 mongo-1 systemd[1]: Starting High-performance, schema-free document-oriented database...
Mar 10 06:47:05 mongo-1 systemd[1]: mongod.service: Control process exited, code=exited status=2
Mar 10 06:47:05 mongo-1 systemd[1]: Failed to start High-performance, schema-free document-oriented database.
Mar 10 06:47:05 mongo-1 systemd[1]: mongod.service: Unit entered failed state.
Mar 10 06:47:05 mongo-1 systemd[1]: mongod.service: Failed with result 'exit-code'.


Is it something to do with numactl , as I see in /usr/bin/percona-server-mongodb-helper.sh .


#
. /etc/default/mongod
DAEMON_OPTS="${OPTIONS}"
#
# 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="numactl $NUMACTL_ARGS"
DAEMON_OPTS=${DAEMON_OPTS:-"--config $CONF"}
NUMA_CONF=$(grep -c 'NUMACTL="numactl --interleave=all"' /etc/default/mongod)
if [ $NUMA_CONF = 0 ]
then
echo 'NUMACTL="numactl --interleave=all"' >> /etc/default/mongod
fi
else
NUMACTL=""
DAEMON_OPTS=${DAEMON_OPTS:-"--config $CONF"}
fi

However, numactl --interleave=all throws in the usage . Is there something I need to change here?


usage: numactl

command args ...
numactl
numactl
numactl

--shm | -S <shmkeyfile>
--file | -f <tmpfsfile>

memory policy | --dump | -d | --dump-nodes | -D

memory policy is --interleave | -i, --preferred | -p, --membind | -m, --localalloc | -l
<nodes> is a comma delimited list of node numbers or A-B ranges or all.
Instead of a number a node can also be:
netdev:DEV the node connected to network device DEV
file:PATH the node the block device of path is connected to
ip:HOST the node of the network device host routes through
block:PATH the node of block device path
pci:[seg:]bus:dev[:func] The node of a PCI device
<cpus> is a comma delimited list of cpu numbers or A-B ranges or all
all ranges can be inverted with !
all numbers and ranges can be made cpuset-relative with +
the old --cpubind argument is deprecated.
use --cpunodebind or --physcpubind instead
<length> can have g (GB), m (MB) or k (KB) suffixes


Thank you ,
Amritha.

Comments

  • Akira KuroganeAkira Kurogane Percona Percona Staff Role
    HI Amritha.
    The systemd journal log shows that the percona-server-mongodb-helper.sh succeeded. 

    > Process: 12356 ExecStartPre=/usr/bin/percona-server-mongodb-helper.sh (code=exited, status=0/SUCCESS)

    It was the start of the mongod binary that failed with exit code 2. https://docs.mongodb.com/manual/reference/exit-codes documentation says that exit 2 code of mongod is "The specified options are in error or are incompatible with other options.". I suspect that the mongod's log file will have more details on what that was.
    Cheers,
    Akira

Sign In or Register to comment.

MySQL, InnoDB, MariaDB and MongoDB are trademarks of their respective owners.
Copyright ©2005 - 2020 Percona LLC. All rights reserved.