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build: docker compose file add some comments.

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Gordon 2025-06-26 14:19:48 +08:00
parent a5ac7f2a81
commit 28265f3097
1 changed files with 25 additions and 4 deletions
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29
docker-compose.yml
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@ -176,17 +176,38 @@ services:
environment:
#KAFKA_HEAP_OPTS: "-Xms128m -Xmx256m"
TZ: Asia/Shanghai
# Unique identifier for the Kafka node (required in controller mode)
KAFKA_CFG_NODE_ID: 0
# Defines the roles this Kafka node plays: broker, controller, or both
KAFKA_CFG_PROCESS_ROLES: controller,broker
# Specifies which nodes are controller nodes for quorum voting.
# The syntax follows the KRaft mode (no ZooKeeper): node.id@host:port
# The controller listener endpoint here is kafka:9093
KAFKA_CFG_CONTROLLER_QUORUM_VOTERS: 0@kafka:9093
# Specifies which listener is used for controller-to-controller communication
KAFKA_CFG_CONTROLLER_LISTENER_NAMES: CONTROLLER
# Default number of partitions for new topics
KAFKA_NUM_PARTITIONS: 8
# Whether to enable automatic topic creation
KAFKA_CFG_AUTO_CREATE_TOPICS_ENABLE: "true"
# Kafka internal listeners; Kafka supports multiple ports with different protocols
# Each port is used for a specific purpose: INTERNAL for internal broker communication,
# CONTROLLER for controller communication, EXTERNAL for external client connections.
# These logical listener names are mapped to actual protocols via KAFKA_CFG_LISTENER_SECURITY_PROTOCOL_MAP
# In short, Kafka is listening on three logical ports: 9092 for internal communication,
# 9093 for controller traffic, and 9094 for external access.
KAFKA_CFG_LISTENERS: "INTERNAL://:9092,CONTROLLER://:9093,EXTERNAL://:9094"
# Addresses advertised to clients. INTERNAL://kafka:9092 uses the internal Docker service name 'kafka',
# so other containers can access Kafka via kafka:9092.
# EXTERNAL://localhost:19094 is the address external clients (e.g., in the LAN) should use to connect.
# If Kafka is deployed on a different machine than IM, 'localhost' should be replaced with the LAN IP.
KAFKA_CFG_ADVERTISED_LISTENERS: "INTERNAL://kafka:9092,EXTERNAL://localhost:19094"
# Maps logical listener names to actual protocols.
# Supported protocols include: PLAINTEXT, SSL, SASL_PLAINTEXT, SASL_SSL
KAFKA_CFG_LISTENER_SECURITY_PROTOCOL_MAP: "CONTROLLER:PLAINTEXT,EXTERNAL:PLAINTEXT,INTERNAL:PLAINTEXT"
# Defines which listener is used for inter-broker communication within the Kafka cluster
KAFKA_CFG_INTER_BROKER_LISTENER_NAME: "INTERNAL"
KAFKA_CFG_LISTENERS: "PLAINTEXT://:9092,CONTROLLER://:9093,EXTERNAL://:9094"
KAFKA_CFG_ADVERTISED_LISTENERS: "PLAINTEXT://kafka:9092,EXTERNAL://localhost:19094"
KAFKA_CFG_LISTENER_SECURITY_PROTOCOL_MAP: "CONTROLLER:PLAINTEXT,EXTERNAL:PLAINTEXT,PLAINTEXT:PLAINTEXT"
KAFKA_CFG_INTER_BROKER_LISTENER_NAME: "PLAINTEXT"
# Authentication configuration variables - comment out to disable auth
# KAFKA_USERNAME: "openIM"