This script monitors a Plex Docker container and automatically restarts it if the Plex web UI becomes unresponsive. If the UI is unreachable, the script restarts the container and sends a Pushover notification to alert you.

plex-docker-watchdog.sh

#!/bin/bash

# Pushover configuration
PUSHOVER_USER_KEY="00000000000000000000000"
PUSHOVER_APP_TOKEN="000000000000000"

# Docker container name for Plex
PLEX_CONTAINER_NAME="plex"

# Plex web UI URL
PLEX_WEB_UI="http://192.168.1.1:32400/web/index.html"

# Function to send a Pushover notification
send_pushover_notification() {
    local message="$1"
    curl -s \
        -F "token=$PUSHOVER_APP_TOKEN" \
        -F "user=$PUSHOVER_USER_KEY" \
        -F "message=$message" \
        https://api.pushover.net/1/messages.json
}

# Check if Plex Docker container is running
if docker ps | grep -q "$PLEX_CONTAINER_NAME"; then
    echo "Plex container is running. Checking web UI..."
    
    # Check if the Plex web UI is accessible
    if ! curl -s --head --fail --connect-timeout 15 -m 30 "$PLEX_WEB_UI" > /dev/null; then
        echo "Plex web UI is not accessible. Restarting container..."
        
        # Restart the Plex Docker container
        docker restart "$PLEX_CONTAINER_NAME"
        
        # Send Pushover notification
        send_pushover_notification "Plex Docker container was restarted because the web UI was not accessible."
    else
        echo "Plex web UI is accessible. No action needed."
    fi
else
    echo "Plex container is not running. No action taken."
fi

# Exit the script
exit 0