PHP script to connect to all EC2 instances in an auto-scaling group on a Mac

asg-ssh-mac

#!/usr/bin/php
<?php
 
/****************************************
  Requirements:
    - Python 2.7+
    - aws-cli
    - osascript
*****************************************/
 
$sshKey = "~/.ssh/id_rsa";    
$sshUser = getenv('USER');    // Get the user from your environment variables     
$autoScalingGroups =  $argv[1]; // A blob pattern of the auto scalling group name to match
$userPrivateIp = true;                  // Use the VPC private IP to connect?
$profile = getenv('AWS_PROFILE');


$cmd = "aws --profile $profile ec2 describe-instances --filter \"Name=instance-state-name,Values=running\" \"Name=tag-key,Values=aws:autoscaling:groupName\" \"Name=tag-value,Values=$autoScalingGroups\"";
echo "Running: $cmd\n";
$instances = json_decode(`$cmd`, true);

$count = 0;
$ascript_body = "";

foreach($instances['Reservations'] as $instance) {
    $count++;
    $ip = $userPrivateIp ? $instance['Instances'][0]['PrivateIpAddress'] : $instance['Instances'][0]['PublicIpAddress'];
    
    $name = "";
    foreach($instance['Instances'][0]['Tags'] as $id => $tag_details) {
        if ($tag_details['Key'] == "Name") {
            $name = $tag_details['Value'];
            break 1;
        }
    }

    echo "Openning ssh to $ip (Name: $name)\n";

    $ascript_body = $ascript_body."
        launch session \"Default Session\"
        tell the last session
            set name to \"$name\"
            write text \"ssh $sshUser@$ip -i $sshKey\"
            write text \"sudo su -\"
            do shell script \"/bin/sleep 0.01\"
        end tell\n
    ";

}

passthru(
    "/usr/bin/osascript <<-EOF 
        set curr_tab to 1
        tell application \"iTerm\"
            set myterm to (make new terminal)
            tell myterm
                $ascript_body
            end tell
        end tell
    EOF
    "
);

echo "---------------------------------------\n";
echo "Connected to $count instances\n";
echo "---------------------------------------\n\n";