Run commands on remote servers

openvpn_runner.sh

#!/bin/bash

VPN_SERVER="10.8.0.1"
STATUS_COMMAND="/root/openvpn_status.sh"

output=$(ssh -o BatchMode=yes -o ConnectTimeout=5 root@$VPN_SERVER "$STATUS_COMMAND")

if [[ $? -ne 0 ]]; then
    echo "Failed to connect to $VPN_SERVER or run the command."
    exit 1
fi

servers=()
while IFS= read -r line; do
    if [[ "$line" =~ ^[-]+$ || "$line" =~ ^Client[[:space:]]+Tunnel ]]; then
        continue
    fi

    client=$(echo "$line" | awk '{print $1}')
    if [[ -n "$client" ]]; then
        servers+=("$client")
    fi
done <<< "$output"

if [[ -z "$1" ]]; then
    echo "Usage: $0 '<remote_command>'"
    exit 1
fi

CLIENT_COMMAND="$1"

for server in "${servers[@]}"; do
    echo "→ Running on $server..."
    
    output=$(ssh -o BatchMode=yes \
                 -o ConnectTimeout=5 \
                 -o ConnectionAttempts=1 \
                 -o StrictHostKeyChecking=accept-new \
                 "$server" "$CLIENT_COMMAND" 2>&1)

    ssh_status=$?

    if [[ $ssh_status -ne 0 ]]; then
        echo "[ERROR] $server: SSH failed with error:"
        echo "$output"
    else
        echo "[OK] $server:"
        echo "$output"
    fi

    echo "----------------------------------------"
done