崩溃后重新启动MongoDB

Question

I ran MongoDB in background in the Ubuntu server with the following command :

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

But sometimes database crashes and I have to restart manually, my question is how to restart automatically if database crashes ?

I have tried to add in /etc/init/mongodb.conf :

respawn
respawn limit 10 90

But still if I kill monogodb process it haven't started automatically. What is the problem ?

Thanks

Answer 1

Depending what operating system you are using, you should use the packages provided for your distribution at https://docs.mongodb.com/manual/administration/install-on-linux/ and then the start scripts provided.

For ubuntu you need to create the systemd file

If you install the .deb package from the link I provided earlier you can then create a systemd script by doing the following.

Create /etc/systemd/system/mongodb.service with the contents

[Unit]
Description=High-performance, schema-free document-oriented database
After=network.target

[Service]
User=mongodb
ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf

[Install]
WantedBy=multi-user.target

then run systemctl start mongodb systemctl enable mongodb

Then you can use systemctl restart mongodb whenever you want to start.