[redis] sentinel masters 내용 살펴보기

마스터 1대, 슬레이브 2대가 연결돼있다.

 

센티널에서 sentinel masters 명령어를 입력해보자

127.0.0.1:26379> sentinel masters
1)  1) "name"
    2) "master-name"
    3) "ip"
    4) "192.168.96.2"
    5) "port"
    6) "6379"
    7) "runid"
    8) "eab71173e1c5849f48cbdf65d1a35cdaab3e761f"
    9) "flags"
   10) "master"
   11) "link-pending-commands"
   12) "0"
   13) "link-refcount"
   14) "1"
   15) "last-ping-sent"
   16) "0"
   17) "last-ok-ping-reply"
   18) "567"
   19) "last-ping-reply"
   20) "567"
   21) "down-after-milliseconds"
   22) "3000"
   23) "info-refresh"
   24) "4472"
   25) "role-reported"
   26) "master"
   27) "role-reported-time"
   28) "968083"
   29) "config-epoch"
   30) "0"
   31) "num-slaves"
   32) "2"
   33) "num-other-sentinels"
   34) "0"
   35) "quorum"
   36) "2"
   37) "failover-timeout"
   38) "180000"
   39) "parallel-syncs"
   40) "1"

 

위의 명령어에 사용한 도커컴포즈는 다음과 같다.

docker-compose.yml

version: '2'

services:

  # master : bitnami/redis:6.2.6
  redis-master:
    hostname: redis-master
    container_name: redis-master
    image: bitnami/redis:6.2.6
    environment:
      - REDIS_REPLICATION_MODE=master
      - ALLOW_EMPTY_PASSWORD=yes
    ports:
      - 6379:6379

  # slave1 : bitnami/redis:6.2.6
  redis-slave-1:
    hostname: redis-slave-1
    container_name: redis-slave-1
    image: bitnami/redis:6.2.6
    environment:
      - REDIS_REPLICATION_MODE=slave
      - REDIS_MASTER_HOST=redis-master
      - ALLOW_EMPTY_PASSWORD=yes
    ports:
      - 6480:6379
    depends_on:
      - redis-master

  # slave2 : bitnami/redis:6.2.6
  redis-slave-2:
    hostname: redis-slave-2
    container_name: redis-slave-2
    image: bitnami/redis:6.2.6
    environment:
      - REDIS_REPLICATION_MODE=slave
      - REDIS_MASTER_HOST=redis-master
      - ALLOW_EMPTY_PASSWORD=yes
    ports:
      - 6481:6379
    depends_on:
      - redis-master
      - redis-slave-1

  # sentinel : bitnami/redis-sentinel:6.2.6
  redis-sentinel:
    hostname: redis-sentinel
    container_name: redis-sentinel
    image: bitnami/redis-sentinel:6.2.6
    environment:
      - REDIS_SENTINEL_DOWN_AFTER_MILLISECONDS=3000
      - REDIS_MASTER_HOST=redis-master
      - REDIS_MASTER_PORT_NUMBER=6379
      - REDIS_MASTER_SET=master-name
      - REDIS_SENTINEL_QUORUM=2
    depends_on:
      - redis-master
      - redis-slave-1
      - redis-slave-2
    ports:
      - 26379-26381:26379