We are installing mongo DB 4.0 on RHEL and facing the below issue when trying to change the default data and log directory in config file.
Aug 03 16:18:28 ralrfdlmgdbpd01 mongod[3219]: 2021-08-03T16:18:28.220-0400 F CONTROL [main] Failed global initialization: FileNotOpen: Failed probe for “/u01/mongodata/log/mongod.log”: Permission denied
Config File
# mongod.conf
# for documentation of all options, see:
# http://docs.mongodb.org/manual/reference/configuration-options/
# where to write logging data.
systemLog:
destination: file
logAppend: true
path: /u01/mongodata/log/mongod.log
# Where and how to store data.
storage:
dbPath: /u01/mongodata/lib
journal:
enabled: true
# engine:
# mmapv1:
# wiredTiger:
# how the process runs
processManagement:
# fork: true # fork and run in background
pidFilePath: /u01/mongodata/mongod.pid # location of pidfile
timeZoneInfo: /usr/share/zoneinfo
# network interfaces
net:
port: 27017
bindIp: 127.0.0.1 # Enter 0.0.0.0,:: to bind to all IPv4 and IPv6 addresses or, alternatively, use the net.bindIpAll setting.
#security:
#operationProfiling:
#replication:
#sharding:
## Enterprise-Only Options
#auditLog:
Because the user with which you start has write access to the specified directories.
Because the user specified in the service configuration does not have write access to all directories specified in the the mongod configuration file.
We see that the directories are owned by mongod and that they are writable. However your prompt seems to indicate that you are trying to start with the user named sysadmin, whom does not have write access to the posted directories. Having the output of pwd would have be interesting because the directories shown in your post could be anywhere in the file hierarchy. We have no way to make sure they are located in /u01/mongodata/.
Since you are specifying pidFilePath as /u01/mongodata/mongod.pid, the user mongod also need to have write access into /u01/mongodata/. The posted ls output does not show the directory details of /u01/mongodata.
we have been trying with 2 different file systems . /u01 and /data.
right now it is configured with /data.
Here is the config file and service file.
[Unit]
Description=MongoDB Database Server
Documentation=https://docs.mongodb.org/manual
After=network.target
[Service]
User=mongod
Group=mongod
Environment="OPTIONS=-f /etc/mongod.conf"
EnvironmentFile=-/etc/sysconfig/mongod
ExecStart=/usr/bin/mongod $OPTIONS
ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb
ExecStartPre=/usr/bin/chown mongod:mongod /var/run/mongodb
ExecStartPre=/usr/bin/chmod 0755 /var/run/mongodb
PermissionsStartOnly=true
PIDFile=/var/run/mongodb/mongod.pid
Type=forking
# file size
LimitFSIZE=infinity
# cpu time
LimitCPU=infinity
# virtual memory size
LimitAS=infinity
# open files
LimitNOFILE=64000
# processes/threads
LimitNPROC=64000
# locked memory
LimitMEMLOCK=infinity
# total threads (user+kernel)
TasksMax=infinity
TasksAccounting=false
# Recommended limits for for mongod as specified in
# http://docs.mongodb.org/manual/reference/ulimit/#recommended-settings
Config File
# mongod.conf
# for documentation of all options, see:
# http://docs.mongodb.org/manual/reference/configuration-options/
# where to write logging data.
systemLog:
destination: file
logAppend: true
path: /var/lib/mongo/mongod.log
# Where and how to store data.
storage:
dbPath: /data/mongodb/lib
journal:
enabled: true
# engine:
# mmapv1:
# wiredTiger:
# how the process runs
processManagement:
# fork: true # fork and run in background
pidFilePath: /var/lib/mongo/mongod.pid # location of pidfile
timeZoneInfo: /usr/share/zoneinfo
# network interfaces
net:
port: XXXXX
bindIp: 127.0.0.1 # Enter 0.0.0.0,:: to bind to all IPv4 and IPv6 addresses or, alternatively, use the net.bindIpAll setting.
#security:
#operationProfiling:
#replication:
#sharding:
## Enterprise-Only Options
#auditLog:
#snmp:
[root@ralrfdlmgdbpd01 system]# cd /data
[root@ralrfdlmgdbpd01 data]# ls -ltr
total 0
drwxr-xr-x. 4 mongod mongod 28 Aug 3 16:28 mongodb
[root@ralrfdlmgdbpd01 data]# cd mongodb
[root@ralrfdlmgdbpd01 mongodb]# ls -ltr
total 0
drwxrwxrwx. 2 mongod mongod 6 Aug 3 16:28 lib
drwxr-xr-x. 2 mongod mongod 24 Aug 3 16:34 log
[root@ralrfdlmgdbpd01 mongodb]# cd lib
[root@ralrfdlmgdbpd01 lib]# ls -ltr
total 0
