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IQ4

iQChannels поддерживает работу в режиме кластера для обеспечения отказоустойчивости и горизонтальной масштабируемости сервера приложений. 

Особенности кластера:

  • В кластере может быть несколько нод с серверным приложением iQChannels (рекомендуется до 3–5).
  • Все ноды в кластере равноправны, нет Single Point of Failure.
  • База данных iQChannels работает в режиме standby.
  • Балансировка входящих подключений между нодами, как со стороны клиентов, так и со стороны операторов, происходит с помощью Nginx или любого другого прокси-сервера.
  • Ноды взаимодействуют между собой через Redis Sentinel.
  • В случае выхода из строя одной или нескольких нод Nginx автоматически распределяет подключения между работающими нодами.
  • Конфигурация нод должна быть одинаковой, в конфигурации каждой ноды должны быть указаны адреса всех нод кластера.

Пример развертывания кластера:

Конфигурации оборудования:

https://wiki.iqstore.ru/pages/viewpage.action?pageId=2950032

Запуск IQChannels в режиме кластера:

  1. Создать файл docker-compose.yml, в котором запускаются docker-образ IQChannels и Redis c поддержкой кластеризации. Пример такого файла 

    docker-compose (2).yaml

  2. В docker-compose прописать через volumes путь до файла с конфигом и папки, где будут хранится логи. 
    volumes:
          - /путь до файла на Вашем компьютере/config.yaml:/iqchannels/config/config.yaml
          - /папка на Вашем компьютере:/iqchannels/var/log/

  3. Контейнеры будут брать за основу config.yaml на Вашем компьютере из пункта 2. В config.yaml есть отдельный раздел - Clusterization. Для включения режима кластера пропишите:
    cluster_mode:                      # cluster mode is disabled by default
    enabled: true # to enable clusterization you also need to provide redis settings bellow


    Для работы в кластерном режиме IQChannels использует Redis. Redis обязателен для работы кластеров. Redis может работать в трех режимах: single,cluster,sentinel. Примеры для настройки всех 3 режимов:

    redis:
    mode: single # single, sentinel or cluster
    network: tcp # The network type, either tcp or unix. Default is tcp.
    addr: localhost:49153 # host:port address. Addr string for single or sentinel instance
    db: 1 # Database to be selected after connecting to the server.
    user: default # user from redis instance
    password: redispw # pass
    cluster_addrs: # list of cluster nodes in format host:port, only for cluster mode
    max_retries: 3 # // Maximum number of retries before giving up. Default is 3 retries; -1 (not 0) disables retries.
    dial_timeout: 5 # default 5 seconds
    min_idle_conns: 1 # default 0
    max_idle_conns: 10 # default 0
    min_retry_backoff: 8 #Minimum backoff between each retry in milliseconds. Default is 8 milliseconds; -1 disables backoff.
    max_retry_backoff: 512 #Maximum backoff between each retry. Default is 512 milliseconds; -1 disables backoff.
    pool_fifo: true # Type of connection pool. true for FIFO pool, false for LIFO pool. Note that FIFO has slightly higher
    #overhead compared to LIFO,but it helps closing idle connections faster reducing the pool size.
    pool_size: 10 # Maximum number of socket connections. Default is 10 connections per every available CPU as reported by runtime.GOMAXPROCS.

    redis:
    mode: cluster
    network: tcp # The network type, either tcp or unix. Default is tcp.
    addr: localhost:49153 # host:port address
    db: 1 # Database to be selected after connecting to the server.
    user: default # user from redis instance
    password: redispw # pass
    cluster_addrs: # list of cluster nodes in format host:port, only for cluster mode
    # -
    # -
    max_retries: 3 # // Maximum number of retries before giving up. Default is 3 retries; -1 (not 0) disables retries.
    dial_timeout: 5 # default 5 seconds
    min_idle_conns: 1 # default 0
    max_idle_conns: 10 # default 0
    min_retry_backoff: 8 #Minimum backoff between each retry in milliseconds. Default is 8 milliseconds; -1 disables backoff.
    max_retry_backoff: 512 #Maximum backoff between each retry. Default is 512 milliseconds; -1 disables backoff.
    pool_fifo: true # Type of connection pool. true for FIFO pool, false for LIFO pool. Note that FIFO has slightly higher
    ## #overhead compared to LIFO,but it helps closing idle connections faster reducing the pool size.
    pool_size: 10 # Maximum number of socket connections. Default is 10 connections per every available CPU as reported by runtime.GOMAXPROCS.

    redis:
    mode: sentinel
    master_name: master # The master name.
    sentinel_addrs: # A seed list of host:port addresses of sentinel nodes.
    -
    -
    client_name: client # ClientName will execute the `CLIENT SETNAME ClientName` command for each conn.
    sentinel_username: sentinel # // If specified with SentinelPassword, enables ACL-based authentication (via AUTH <user> <pass>)
    sentinel_password: pass # // Sentinel password from "requirepass <password>" (if enabled) in Sentinel configuration, or, if SentinelUsername is also supplied, used for ACL-based authentication.
    route_randomly: false # Allows routing read-only commands to the random master or replica node.
    route_by_latency: true # Allows routing read-only commands to the closest master or replica node.
    replica_only: false #Route all commands to replica read-only nodes.
    min_retry_backoff: 8 #Minimum backoff between each retry in milliseconds. Default is 8 milliseconds; -1 disables backoff.
    max_retry_backoff: 512 #Maximum backoff between each retry. Default is 512 milliseconds; -1 disables backoff.
    db: 1 # Database to be selected after connecting to the server.
    user: default # user from redis instance
    password: redispw # pass
    max_retries: 3 # // Maximum number of retries before giving up. Default is 3 retries; -1 (not 0) disables retries.
    dial_timeout: 5 # default 5 seconds
    min_idle_conns: 1 # default 0
    max_idle_conns: 10 # default 0
    pool_fifo: true # Type of connection pool. true for FIFO pool, false for LIFO pool. Note that FIFO has slightly higher
    # #overhead compared to LIFO,but it helps closing idle connections faster reducing the pool size.
    pool_size: 10 # Maximum number of socket connections. Default is 10 connections per every available CPU as reported by runtime.GOMAXPROCS.

  4.  Пропишите нужное кол-во сервисов IQChannels и Redis через docker-compose или коммандную строку docker и запустите. 

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