MongoDB service and configuration

mongod.conf

net:
  bindIp: 0.0.0.0
  port: 27000
processManagement:
  fork: "true"
  pidFilePath: /var/run/mongodb/mongod.pid  # location of pidfile
security:
  authorization: enabled
  keyFile: /var/lib/mongodb-mms-automation/keyfile
storage:
  dbPath: /app/mongodb/oplog/data
systemLog:
  destination: file
  path: /app/mongodb/oplog/data/mongodb.log

mongod.service

[Unit]
Description=High-performance, schema-free document-oriented database
After=network.target
Documentation=https://docs.mongodb.org/manual

[Service]
User=mongod
Group=mongod
ExecStart=/var/lib/mongodb-mms-automation/mongodb-linux-x86_64-3.6.2-ent/bin/mongod --config /etc/mongod.conf
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

[Install]
WantedBy=multi-user.target