Red Hat/Cent OS

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Petio supports two ways of connecting to a Mongo Database instance, locally or remote. We recommend the locally hosted MongoDB option.

MongoDB Locally

  • Configure the package management system (yum)

  • Create a /etc/yum.repos.d/mongodb-org-4.4.repo file so that you can install MongoDB directly using yum:

sudo nano /etc/yum.repos.d/mongodb-org-4.4.repo
  • Paste in the nano / terminal window:

name=MongoDB Repository
  • Press: "CTRL + O" to save and "CTRL+X" to exit.

  • To install the latest stable version of MongoDB, issue the following command:

sudo yum install -y mongodb-org
  • Start MongoDB:

sudo systemctl start mongod
  • Verify that MongoDB has started successfully:

sudo systemctl status mongod
  • To make sure MongoDB starts after restart use:

sudo systemctl enable mongod

MongoDB Locally - On A Different Host

By default, MongoDB doesn’t allow remote connections.

  • Locate your mongod.conf and edit it with your favorite editor. Include any local IP addresses you want to allow to connect to your MongoDB instance.

vim /etc/mongod.conf
# /etc/mongod.conf
# Listen to local and LAN interfaces.
bind_ip =,
  • Restart the mongod service after making these changes

sudo systemctl restart mongod

If there is a firewall, you might need to use iptables to allow access to MongoDB. Example below:

  • Any connections can connect to MongoDB on port 27017

iptables -A INPUT -p tcp --dport 27017 -j ACCEPT
  • Only certain IPs can connect to MongoDB on port 27017

iptables -A INPUT -s <ip-address> -p tcp --destination-port 27017 -m state --state NEW,ESTABLISHED -j ACCEPT
iptables -A OUTPUT -d <ip-address> -p tcp --source-port 27017 -m state --state ESTABLISHED -j ACCEPT

MongoDB Remotely

  • Register for Atlas here.

  • Create a free cluster.

  • Change the provider or region if you need to. It may take some time to create the cluster.

  • After the cluster is made, click on connect and select MongoDB Compass and follow the instructions on screen.

Installing Petio

  • Create a user for Petio:

sudo useradd -M --shell=/bin/false petio
  • Make a directory for Petio:

sudo mkdir /opt/Petio
  • Download the latest version of Petio:

sudo wget -O
  • Extract Petio to the directory we just made:

sudo unzip -d /opt/Petio
  • Change ownership of the directory for Petio:

sudo chown -R petio:petio /opt/Petio
  • Create the petio service with systemd:

sudo vi /etc/systemd/system/petio.service

Description=Petio a content request system


  • Reload systemd:

sudo systemctl daemon-reload
  • Start Petio:

sudo systemctl start petio

Once you've completed theses steps, you can navigate to http://<hostname>:7777 to start configuring Petio.

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