redpanda.sh

#!/bin/bash
# Start/stop a local Redpanda instance for development using Apple container CLI

#pre setup you need to do:

# sudo container system property set dns.domain rp
# sudo container system property set dns.domain rp
# gh auth token | container registry login ghcr.io -u $(gh api user | jq .login -r) --password-stdin

set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_DIR="$(dirname "$SCRIPT_DIR")"

CONTAINER_NAME="redpanda-dev"
REDPANDA_IMAGE="docker.redpanda.com/redpandadata/redpanda:latest"
KAFKA_PORT=19092
ADMIN_PORT=19644
ADMIN_UI_PORT=8888
DOMAIN=rp
usage() {
    echo "Usage: $0 start|stop"
    exit 1
}

ensure_container_cli() {
    if ! command -v container &> /dev/null; then
        echo "Error: 'container' CLI is required but not installed"
        echo "Install with: brew install container"
        exit 1
    fi
}

ensure_runtime() {
    if ! container system info &> /dev/null 2>&1; then
        echo "Starting container runtime..."
        container system start
        # Give the runtime a moment to initialize
        sleep 2
    fi
}

do_start() {
    ensure_container_cli
    ensure_runtime
    container system property set dns.domain rp
    # Remove any existing container
    echo "Removing existing $CONTAINER_NAME container (if any)..."
    container rm -f "$CONTAINER_NAME" 2>/dev/null || true

    echo "Starting Redpanda container..."
    container run -d --name "$CONTAINER_NAME" \
        --memory 1512M \
        --dns-domain ${DOMAIN} \
        -p ${KAFKA_PORT}:${KAFKA_PORT} \
        -p ${ADMIN_PORT}:9644 \
        "$REDPANDA_IMAGE" \
        redpanda start \
        --kafka-addr internal://[::]:9092,external://[::]:${KAFKA_PORT} \
        --advertise-kafka-addr internal://${CONTAINER_NAME}.${DOMAIN}:9092,external://${CONTAINER_NAME}.${DOMAIN}:${KAFKA_PORT} \
        --smp 2 \
        --memory 512M \
        --mode dev-container \
        --default-log-level=warn
    echo ""

    container run -d --name redpanda-console \
    -p ${ADMIN_UI_PORT}:8080 \
    --dns-domain ${DOMAIN} \
    -e KAFKA_BROKERS=${CONTAINER_NAME}.${DOMAIN}:${KAFKA_PORT} \
    redpandadata/console:latest

    echo "Waiting for Redpanda to be healthy..."
    max_attempts=30
    attempt=0
    while [ $attempt -lt $max_attempts ]; do
        if container exec "$CONTAINER_NAME" rpk cluster health 2>/dev/null | grep -q "Healthy:.*true"; then
            break
        fi
        attempt=$((attempt + 1))
        sleep 1
    done

    if [ $attempt -eq $max_attempts ]; then
        echo "Warning: Redpanda health check timed out after ${max_attempts}s, but cluster may still be starting"
    else
        echo "Redpanda is healthy!"
    fi

    echo ""
    echo "Redpanda is running!"
    echo ""
    echo "Kafka broker:  localhost:${KAFKA_PORT}"
    echo "Admin API:     http://localhost:${ADMIN_PORT}"
    echo "Console UI:     http://localhost:${ADMIN_UI_PORT}"
    echo ""
    echo "try with: echo bar | kcat -P -b redpanda-dev.rp:19092 -t foo; kcat -C -b redpanda-dev.rp:19092 -t foo -o -1 -c 1" 
    echo ""
    echo "To stop: $0 stop"
}

do_stop() {
    ensure_container_cli

    echo "Stopping $CONTAINER_NAME..."
    container stop "$CONTAINER_NAME" 2>/dev/null || true
    container rm -f "$CONTAINER_NAME" 2>/dev/null || true

        echo "Stopping redpanda-console..."
    container stop "redpanda-console" 2>/dev/null || true
    container rm -f "redpanda-console" 2>/dev/null || true

    echo "Redpanda stopped and removed."
}

case "${1:-}" in
    start) do_start ;;
    stop)  do_stop ;;
    *)     usage ;;
esac