Troubleshooting isle-dc build conflicts.

check_port.sh

#!/bin/bash
DOCKER_COMPOSE_FILE="docker-compose.yml"

# Check if docker-compose file exists
if [ ! -f "$DOCKER_COMPOSE_FILE" ]; then
    echo "Docker Compose file not found at $DOCKER_COMPOSE_FILE"
    exit 1
fi

# Extract ports from the 'ports' section of 'traefik' service
TRAFFIC_PORTS=$(awk '/traefik:/{f=1} f==1&&/ports:/{p=1;next} /ports:/{p=0} p&&/published:/{print $2}' $DOCKER_COMPOSE_FILE | tr -d '"')

# Extract ports from Traefik labels for load balancer server port
LABEL_PORTS=$(grep -oP 'traefik.http.services.\w+.loadbalancer.server.port: "\K\d+' $DOCKER_COMPOSE_FILE)

# Combine and deduplicate port lists
ALL_PORTS=$(echo -e "$TRAFFIC_PORTS\n$LABEL_PORTS" | sort | uniq)

# Check if any ports are found
if [ -z "$ALL_PORTS" ]; then
    echo "No ports found in $DOCKER_COMPOSE_FILE"
    exit 1
fi

echo "Ports found in $DOCKER_COMPOSE_FILE: $ALL_PORTS"

# Check each port to see if it is already in use and by which process
for PORT in $ALL_PORTS; do
    # Use lsof to check if the port is in use and extract the process using it
    PROCESS_INFO=$(lsof -iTCP:$PORT -sTCP:LISTEN -Fpcn)

    if [ ! -z "$PROCESS_INFO" ]; then
        echo "Port $PORT is already in use by:"
        # Extract and format the command and PID from the lsof output
        COMMAND=$(echo "$PROCESS_INFO" | grep '^c' | cut -c2-)
        PID=$(echo "$PROCESS_INFO" | grep '^p' | cut -c2-)
        NAME=$(echo "$PROCESS_INFO" | grep '^n' | cut -c2-)
        if [ ! -z "$COMMAND" ] && [ ! -z "$PID" ]; then
            echo "$COMMAND (PID: $PID) listening on $NAME"
        else
            echo "Process details unavailable"
        fi
    else
        echo "Port $PORT is available."
    fi
done