deepstream.io

Multiple instances of deepstream.io server inside one node

Is it possible to run multiple instances of the deepstream.io server inside one node (computer)? Each instance will listen on different port, store in different storage, etc. Use case is when one instance is used for the production and other for the staging - production and staging use different MongoDB databases for storage.

Solution

  • Absolutely, just make sure to point them to two different configuration files when starting. Here's how it would work on e.g. AWS Linux:

    Install deepstream

    sudo wget https://bintray.com/deepstreamio/rpm/rpm -O /etc/yum.repos.d/bintray-deepstreamio-rpm.repo
sudo yum install -y deepstream.io

    Copy the permission file and two versions of the config file

    cp /etc/deepstream/config.yml config-dev.yml
cp /etc/deepstream/config.yml config-prod.yml
cp /etc/deepstream/permissions.yml permissions.yml

    Change the ports (and anything else you'd need) in the config file

    vim config

    and then start both with 

     deepstream start -c config-dev.yml
 deepstream start -c config-prod.yml

    resulting in

    enter image description here

    To better handle multiple deepstream processes running on the same machine, I'd recommend using a tool like PM2

    Its node-based, so you'd install it on AWS via

     curl --silent --location https://rpm.nodesource.com/setup_6.x | sudo bash -
 sudo yum -y install nodejs
 sudo npm install -g pm2

    Now you can run multiple processes with different configurations as follows

    pm2 start --name ds-dev deepstream -- start -c ~/config-dev.yml
pm2 start --name ds-prod deepstream -- start -c ~/config-prod.yml

    resulting in

    PM2 output

    PM2 allows you to easily start / end / restart / monitor individual processes using their IDs, e.g. pm2 stop 0 and keeps track of your logs, restarts processes etc...