How to run a multi-OS web setup using a single script file?

Steps:

1. cd /opt/scripts

2. mkdir remote_websetup

3. cd remote_websetup .

4. vim remhosts

5. Paste the below into the file

    web01
    web02
    web03
   

6. Run the following command - for host in cat remhosts; do ssh devops@$host sudo yum install git -y;done .

   

7. Create vim remoteweb_os.sh

8. Paste the below code -

    #!/bin/bash
   
    # Variable Declaration
    #PACKAGE="httpd wget unzip"
    #SVC="httpd"
    URL='https://www.tooplate.com/zip-templates/2098_health.zip'
    ART_NAME='2098_health'
    TEMPDIR="/tmp/webfiles"
   
    yum --help &> /dev/null
   
    if [ $? -eq 0 ]
    then
       # Set Variables for CentOS
       PACKAGE="httpd wget unzip"
       SVC="httpd"
   
       echo "Running Setup on CentOS"
       # Installing Dependencies
       echo "########################################"
       echo "Installing packages."
       echo "########################################"
       sudo yum install $PACKAGE -y > /dev/null
       echo
   
       # Start & Enable Service
       echo "########################################"
       echo "Start & Enable HTTPD Service"
       echo "########################################"
       sudo systemctl start $SVC
       sudo systemctl enable $SVC
       echo
   
       # Creating Temp Directory
       echo "########################################"
       echo "Starting Artifact Deployment"
       echo "########################################"
       mkdir -p $TEMPDIR
       cd $TEMPDIR
       echo
   
       wget $URL > /dev/null
       unzip $ART_NAME.zip > /dev/null
       sudo cp -r $ART_NAME/* /var/www/html/
       echo
   
       # Bounce Service
       echo "########################################"
       echo "Restarting HTTPD service"
       echo "########################################"
       systemctl restart $SVC
       echo
   
       # Clean Up
       echo "########################################"
       echo "Removing Temporary Files"
       echo "########################################"
       rm -rf $TEMPDIR
       echo
   
       sudo systemctl status $SVC
       ls /var/www/html/
   
    else
        # Set Variables for Ubuntu
       PACKAGE="apache2 wget unzip"
       SVC="apache2"
   
       echo "Running Setup on CentOS"
       # Installing Dependencies
       echo "########################################"
       echo "Installing packages."
       echo "########################################"
       sudo apt update
       sudo apt install $PACKAGE -y > /dev/null
       echo
   
       # Start & Enable Service
       echo "########################################"
       echo "Start & Enable HTTPD Service"
       echo "########################################"
       sudo systemctl start $SVC
       sudo systemctl enable $SVC
       echo
   
       # Creating Temp Directory
       echo "########################################"
       echo "Starting Artifact Deployment"
       echo "########################################"
       mkdir -p $TEMPDIR
       cd $TEMPDIR
       echo
   
       wget $URL > /dev/null
       unzip $ART_NAME.zip > /dev/null
       sudo cp -r $ART_NAME/* /var/www/html/
       echo
   
       # Bounce Service
       echo "########################################"
       echo "Restarting HTTPD service"
       echo "########################################"
       systemctl restart $SVC
       echo
   
       # Clean Up
       echo "########################################"
       echo "Removing Temporary Files"
       echo "########################################"
       rm -rf $TEMPDIR
       echo
   
       sudo systemctl status $SVC
       ls /var/www/html/
    fi
   

9. Run the script file to see it in action.

Push the above script to all the connected VMs using another script -

1. vim webdeploy.sh do and paste the below code.

    #!/bin/bash
   
    # Define the username for connecting to remote hosts
    USR='devops'
   
    # Iterate through the list of hosts from the file "remhosts"
    for host in `cat remhosts`
    do
       echo
       echo "#########################################################"
       echo "Connecting to $host"
       echo "Pushing Script to $host"
   
       # Copy the script "multios_websetup.sh" to the remote host's /tmp/ directory
       scp multios_websetup.sh $USR@$host:/tmp/
   
       echo "Executing Script on $host"
   
       # Execute the script on the remote host using SSH and sudo
       ssh $USR@$host sudo /tmp/multios_websetup.sh
   
       # Remove the script from the remote host's /tmp/ directory after execution
       ssh $USR@$host sudo rm -rf /tmp/multios_websetup.sh
   
       echo "#########################################################"
       echo
    done
   

2. And then run the script to see it in action.

3. You can check the website by accessing the IP address of the VMs from /etc/host .