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titleiq4

iQChannels 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 iQChannels (рекомендуется , до 3—53–5).
  • Все ноды в кластере равноправны, среди нод 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 по внутреннему Cluster API, построенному поверх ZeroMQ и работающему на порте :3010через Redis Sentinel.
  • В случае выхода из строя одной или нескольких нод Nginx автоматически распределит распределяет подключения между работающими нодами.
  • Конфигурация нод должна быть одинаковой, в конфигурации каждой ноды должны быть указаны адреса всех нод кластера.

Пример развертывания кластера:

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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.

Code Block
languageyml
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 сервер из пункта 2. В config.yaml есть отдельный раздел - Clusterization. Для включения режима кластера пропишите:

Code Block
languageyml
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:


Single:


Code Block
languageyml
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.

Sentinel:

Code Block
languageyml
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.

Cluster:

Code Block
languageyml
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.

4. Пропишите нужное кол-во сервисов iQChannels и Redis через docker-compose или командную строку docker и запустите. :Image Removed