Nagios Core (formerly known as just Nagios) is a free tool that can be used to monitor networking equipment, server equipment, and general networking infrastructure. This is a command line tutorial therefore this can be done on either the desktop or the CLI version of Linux.

• OS Requirements
  • Ubuntu Linux 20.04
• Install Required Packages
  • apt install wget unzip curl openssl build-essential libgd-dev libssl-dev libapache2-mod-php php-gd php apache2 -y
• Install nagios core
  • wget https://assets.nagios.com/downloads/nagioscore/releases/nagios-4.4.6.tar.gz
• Extract the downloaded files.
  • sudo tar -zxvf nagios-4.4.6.tar.gz
• Navigate to the setup directory.
  • cd nagios-4.4.6
• Run the Nagios Core configure script.
  • sudo ./configure
• Compile the main program and CGIs.
  • sudo make all
• Make and install group and user.
  • sudo make install-groups-users
• Add www-data directories user to the nagios group.
  • sudo usermod -a -G nagios www-data
• Install Nagios.
  • sudo make install
• Initialize all the installation configuration scripts.
  • sudo make install-init
• Install and configure permissions on the configs’ directory.
  • sudo make install-commandmode
• Install sample config files.
  • sudo make install-config
• Install apache files.
  • sudo make install-webconf
• Enable apache rewrite mode.
  • sudo a2enmod rewrite
• Enable CGI config.
  • sudo a2enmod cgi
• Restart the Apache service.
  • sudo systemctl restart apache2
• Create a user and set the password when prompted.
  $ sudo htpasswd -c /usr/local/nagios/etc/htpasswd.users admin

1. Create an Ubuntu Desktop VM
2. Change IP address to desired address either through DHCP or statically on the machine
3. Update Linux
   1. apt-get update
   2. apt-get upgrade
4. Install Java and SQL
   1. Open the terminal
      1. sudo apt install default-jre
   2. Install sql
      1. sudo apt install mysql-server
5. Make sure java installed
   1. Open terminal
      1. Java -version
6. Go to https://www.nextgen.com/products-and-services/mirth-connect-downloads 
   1. Download the Linux.tar.gz file for the Linux installation
   2. Install the Administrator version as well
7. Extract the 2 downloads and move them to the /opt/ directory 
   1. tar -xvzf /path/to/filename.tar.gz
8. Open New terminal
   1. Move downloads from desktop to /opt/ directory
      1. Cd Desktop/
      2. Sudo mv /DOWNLOAD ONE NAME/ /opt/
      3. Sudo mv /DOWNLOAD TWO NAME/ /opt/
9. Confirm that the files are in the /opt/ directory
   1. cd /opt/
   2. ls
      1. There should be 2 files in the /opt/ directory (the two you downloaded and moved)
10. Enter the mirth file to find the configuration file
    1. cd Mirth\ Connect/
    2. ls
    3. cd /conf
    4. ONLY DO THIS IF YOU WISH TO EDIT CONFIG FILE
       1. nano mirth.properties
       2. You will not be free to edit the configuration files.
    5. Cat mirth.properties
       1. You should now be in the server properties of mirth. Edit these files if you wish to (username, password, port numbers)
11. Lave the configuration file
    1. Cd ..
12. Launch the server
    1. ./mcserver
13. Connect to the server via web browser

IF YOU DECIDE TO USE THE ADMIN PROGRAM

1. Open a new terminal window
2. Navigate to /opt/ directory
   1. Cd /opt/
3. Go into the mirth admin program
   1. cd mirth-administrator-launcher/
4. Run the launcher
   1. ./launcher
   2. You should not be loading into the admin panel where you can enter your server credentials.

1. Enter the root user account
   1. sudo -i
2. View current running docker containers to find the one you want to upload
   1. Docker ps -a
3. You can make sure its the correct machine by interfacing with it and checking the files
   1. Docker exec -it <CONTAINER ID> (EX: 50b2e9d0dff6) bash
      1. Docker exec -it 50b2e9d0dff6 bash
      2. Here you can use it as you would a regular CMD Linux PC
      3. To exit the container, do the command: “exit”
4. Commit Container to an Image (This turns the container into a docker image for reuse)
   1. Docker commit <CONTAINER ID> <DOCKER HUB USERNAME>/<Your_Image_Name>
      1. EX: docker commit 50b2e9d0dff6 mpeck/ubuntu-modified
5. Log into your Docker Hub account on the docker-machine
   1. docker login
      1. You will then enter your docker hub username and password
6. Push the docker image to Docker Hub
   1. docker push <username>/<Image_Name>
      1. EX: docker push mpeck/ubuntu-modified
7. Check Docker Hub
   1. https://hub.docker.com/
   2. Log into the account you used to push the container
   3. Check the “repository” tab for your container.