[Unit]
Description=MongoDB Database Server
Documentation=https://docs.mongodb.org/manual
After=network-online.target
Wants=network-online.target

[Service]
User=mongodb
Group=mongodb
ExecStart=/usr/bin/mongod --config /etc/mongodb.conf
PIDFile=/run/mongodb/mongod.pid
# 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
# Make systemd wait as long as it takes for MongoDB to start
# If MongoDB needs a long time to start, prevent systemd from
# restarting it every 90 seconds
# See: https://jira.mongodb.org/browse/SERVER-38086
TimeoutStartSec=infinity

# Recommended limits for mongod as specified in
# https://docs.mongodb.com/manual/reference/ulimit/#recommended-ulimit-settings

[Install]
WantedBy=multi-user.target