O'qish replikasi

qiyin

Replika asosiy baza tayyor bo'lmasdan ulanolmaydi. Ikkalasi ham o'z volume'ida, ikkalasi ham yopiq, ikkalasi ham bir tarmoqda.

replica primary sog'lom bo'lishini kutsin.
primary da pg_isready healthcheck bo'lsin.
primary → pgdata, replica → pgreplica volume (ikkalasi /var/lib/postgresql/data).
Ikkalasida ham ports bo'lmasin; ikkalasi data tarmog'ida.
replica da POSTGRES_PASSWORD tashqaridan olinsin.

…

docker-compose.yml

services:
  primary:
    image: postgres:16-alpine
    ports:
      - "5432:5432"
    environment:
      POSTGRES_USER: app
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
    volumes:
      - pgdata:/var/lib/postgresql/data
  replica:
    image: postgres:16-alpine
    ports:
      - "5433:5432"
    environment:
      POSTGRES_USER: app
      POSTGRES_PASSWORD: parol
      PRIMARY_HOST: primary
    depends_on:
      - primary
volumes:
  pgdata:

✓ YAML to'g'ri · 2 servis

Tab ichkariga · Shift+Tab tashqariga⌘/Ctrl+Enter tekshirishEsc maydondan chiqish

2 servis · 0 tarmoq · 1 volume · tuzilma toza

✓ Compose e'tiroz bildiradigan narsa topilmadi. Vazifa talablari esa serverda, ishga tushirganda tekshiriladi.

Servislar 2

postgres:16-alpine

portlar: 0.0.0.0:5432 → 5432/tcp
healthcheck: yo'q
restart: no (standart)
user: root (standart)
volume: pgdata → /var/lib/postgresql/data
tarmoq: default

postgres:16-alpine

portlar: 0.0.0.0:5433 → 5432/tcp
healthcheck: yo'q
restart: no (standart)
user: root (standart)
tarmoq: default

Ishga tushish tartibi

primaryhech kimni kutmaydi
replicaprimary ishga tushishini kutadi (tayyorligini emas)