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Redis Sentinel usage and configuration in Laravel

步履不停
步履不停Original
2019-06-28 17:39:003948browse

Redis Sentinel usage and configuration in Laravel

Master-slave configuration(master-slave)

  • Copy the redis configuration file to open multiple slaves
sudo cp / etc/redis.conf /etc/redis-6381.conf

sudo cp /etc/redis.conf /etc/redis-6382.conf

  • Edit the slave configuration file, mainly Modify parameters
port 6381

pidfile "/var/run/redis-6381.pid"

logfile "/var/log/redis/redis-6381.log"

slaveof 11.11.11.11 6381

masterauth "123456" # 主从都保持一样的密码,且 master 的配置也需要这一行,在执行切换 master 的时候好像不会去添加这一行
  • /usr/bin/redis-server /etc/redis.conf Start redis through configuration

Sentinel configuration(sentinel)

  • Copy the sentinel configuration, enable 3 sentinels here
sudo cp /etc/redis-sentinel.conf /etc/redis-sentinel-26381.conf

sudo cp / etc/redis-sentinel.conf /etc/redis-sentinel-26382.conf

  • Edit the sentinel configuration file, mainly modify the parameters as follows, configure according to the specific situation
port 26381

pidfile "/var/run/redis-sentinel-26381.pid"

logfile "/var/log/redis/redis-sentinel-26381.log"

sentinel monitor mymaster 11.11.11.11 6379 2 #主节点别名为mymaster,后面是ip和端口,2代表判断主节点失败至少需要2个sentinel节点同意

sentinel auth-pass mymaster 123456

sentinel down-after-milliseconds mymaster 30000 #主节点故障30秒后启用新的主节点

sentinel parallel-syncs mymaster 1 #故障转移时最多可以有1个从节点同时对主节点进行数据同步,数字越大,用时越短,存在网络和 IO 开销

sentinel failover-timeout mymaster 180000 #故障转移超时时间180s:a 如果转移超时失败,下次转移时时间为之前的2倍;b 从节点变主节点时,从节点执行 slaveof no one 命令一直失败的话,当时间超过180S时,则故障转移失败;c 从节点复制新主节点时间超过180S转移失败
  • /usr/bin/redis-sentinel /etc/redis-sentinel.conf Start the sentinel through configuration

laravel sentinel configuration

'default' => [
            'tcp://11.11.11.11:26379',
            'tcp://11.11.11.11:26381',
            'tcp://11.11.11.11:26382',    //这3个都是sentinel节点的地址
            'options' => [
                'replication' => 'sentinel',
                'service'     => env('REDIS_SENTINEL_SERVICE', 'mymaster'),    //sentinel
                'parameters'  => [
                    'host'     => env('REDIS_HOST', '127.0.0.1'),
                    'port'     => env('REDIS_PORT', 6379),
                    'password' => env('REDIS_PASSWORD', null),    //redis的密码,没有时写null
                    'database' => 0,
                ],
            ],
        ]

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