Redis+Sentinel安装与配置

在这里我们搭建的是一个1主3从的redis+3个哨兵集群的环境，由于是在一台物理机上，所有我们用端口区分。

物理机IP：192.168.0.12

主节点master端口：6301

从节点slave1端口：6315

从节点slave2端口：6316

从节点slave3端口：6317

哨兵sentinel1端口：26301

哨兵sentinel2端口：26302

哨兵sentinel3端口：26303

一、下载安装

$ wget http://download.redis.io/releases/redis-3.0.0.tar.gz

$ tar xzf redis-3.0.0.tar.gz

$ cd redis-3.0.0

$ make

二、复制文件

cp redis-benchmark redis-cli redis-server redis-sentinel /usr/bin/ #这个倒是很有用，这样就不用再执行时加上./了，而且可以在任何地方执行

三、设置内存分配策略（可选，根据服务器的实际情况进行设置）

/proc/sys/vm/overcommit_memory

可选值：0、1、2。

0， 表示内核将检查是否有足够的可用内存供应用进程使用；如果有足够的可用内存，内存申请允许；否则，内存申请失败，并把错误返回给应用进程。

1， 表示内核允许分配所有的物理内存，而不管当前的内存状态如何。

2， 表示内核允许分配超过所有物理内存和交换空间总和的内存

四、开启redis端口，修改防火墙配置文件

    vi /etc/sysconfig/iptables 

加入端口配置

    -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 6379 -j ACCEPT 

重新加载规则

    service iptables restart 

五、配置redis.config文件

1、主节点master的配置文件redis_master_6301.config：

# Redis configuration file example

################################## INCLUDES ###################################

# include /path/to/local.conf

# include /path/to/other.conf

################################ GENERAL  #####################################

daemonize yes

pidfile ./run/redis_slaver1_6315.pid

port 6301

tcp-backlog 511

# bind 192.168.1.100 10.0.0.1

# bind 127.0.0.1

# unixsocket /tmp/redis.sock

# unixsocketperm 700

timeout 0

tcp-keepalive 0

loglevel notice

logfile
"./run/logs/log_master_6301.log"

databases 16

################################ SNAPSHOTTING  ################################

save ""

# save 900 1

# save 300 10

# save 60 10000

stop-writes-on-bgsave-error yes

rdbcompression yes

rdbchecksum no

dbfilename dump_6301.rdb

dir ./run/data

################################# REPLICATION #################################

slave-serve-stale-data yes

slave-read-only yes

repl-diskless-sync no

repl-diskless-sync-delay 5

# repl-ping-slave-period 10

# repl-timeout 60

repl-disable-tcp-nodelay no

# repl-backlog-size 1mb

# repl-backlog-ttl 3600

slave-priority 100

# min-slaves-to-write 3

# min-slaves-max-lag 10

################################## SECURITY ###################################

# rename-command CONFIG ""

################################### LIMITS ####################################

# maxclients 10000

# maxmemory <bytes>

# maxmemory-policy noeviction

# maxmemory-samples 5

############################## APPEND ONLY MODE ###############################

appendonly no

appendfilename "appendonly_6301.aof"

appendfsync no

no-appendfsync-on-rewrite no

auto-aof-rewrite-percentage 100

auto-aof-rewrite-min-size 64mb

aof-load-truncated yes

################################ LUA SCRIPTING  ###############################

lua-time-limit 5000

################################ REDIS CLUSTER  ###############################

# cluster-enabled yes

# cluster-config-file nodes-6379.conf

# cluster-node-timeout 15000

# cluster-slave-validity-factor 10

# cluster-migration-barrier 1

# cluster-require-full-coverage yes

################################## SLOW LOG ###################################

slowlog-log-slower-than 10000

slowlog-max-len 128

################################ LATENCY MONITOR ##############################

latency-monitor-threshold 0

############################# EVENT NOTIFICATION ##############################

notify-keyspace-events ""

############################### ADVANCED CONFIG ###############################

hash-max-ziplist-entries 512

hash-max-ziplist-value 64

list-max-ziplist-entries 512

list-max-ziplist-value 64

set-max-intset-entries 512

zset-max-ziplist-entries 128

zset-max-ziplist-value 64

hll-sparse-max-bytes 3000

activerehashing yes

client-output-buffer-limit normal 0 0 0

client-output-buffer-limit slave 256mb 64mb 60

client-output-buffer-limit pubsub 32mb 8mb 60

hz 10

aof-rewrite-incremental-fsync yes

2、从节点slave1的配置文件redis_slave_6315.config：

# Redis configuration file example

################################## INCLUDES ###################################

# include /path/to/local.conf

# include /path/to/other.conf

################################ GENERAL  #####################################

daemonize yes

pidfile ./run/redis_slaver1_6315.pid

port 6315

tcp-backlog 511

# bind 192.168.1.100 10.0.0.1

# bind 127.0.0.1

# unixsocket /tmp/redis.sock

# unixsocketperm 700

timeout 0

tcp-keepalive 0

loglevel notice

logfile "./run/logs/log_slaver1_6315.log"

databases 16

################################ SNAPSHOTTING  ################################

save ""

# save 900 1

# save 300 10

# save 60 10000

stop-writes-on-bgsave-error yes

rdbcompression yes

rdbchecksum no

dbfilename dump_6315.rdb

dir ./run/data

################################# REPLICATION #################################

slaveof 192.168.0.12 6301

slave-serve-stale-data yes

slave-read-only yes

repl-diskless-sync no

repl-diskless-sync-delay 5

# repl-ping-slave-period 10

# repl-timeout 60

repl-disable-tcp-nodelay no

# repl-backlog-size 1mb

# repl-backlog-ttl 3600

slave-priority 80

# min-slaves-to-write 3

# min-slaves-max-lag 10

################################## SECURITY ###################################

# rename-command CONFIG ""

################################### LIMITS ####################################

# maxclients 10000

# maxmemory <bytes>

# maxmemory-policy noeviction

# maxmemory-samples 5

############################## APPEND ONLY MODE ###############################

appendonly no

appendfilename "appendonly_6315.aof"

appendfsync no

no-appendfsync-on-rewrite no

auto-aof-rewrite-percentage 100

auto-aof-rewrite-min-size 64mb

aof-load-truncated yes

################################ LUA SCRIPTING  ###############################

lua-time-limit 5000

################################ REDIS CLUSTER  ###############################

# cluster-enabled yes

# cluster-config-file nodes-6379.conf

# cluster-node-timeout 15000

# cluster-slave-validity-factor 10

# cluster-migration-barrier 1

# cluster-require-full-coverage yes

################################## SLOW LOG ###################################

slowlog-log-slower-than 10000

slowlog-max-len 128

################################ LATENCY MONITOR ##############################

latency-monitor-threshold 0

############################# EVENT NOTIFICATION ##############################

notify-keyspace-events ""

############################### ADVANCED CONFIG ###############################

hash-max-ziplist-entries 512

hash-max-ziplist-value 64

list-max-ziplist-entries 512

list-max-ziplist-value 64

set-max-intset-entries 512

zset-max-ziplist-entries 128

zset-max-ziplist-value 64

hll-sparse-max-bytes 3000

activerehashing yes

client-output-buffer-limit normal 0 0 0

client-output-buffer-limit slave 256mb 64mb 60

client-output-buffer-limit pubsub 32mb 8mb 60

hz 10

aof-rewrite-incremental-fsync yes

3、从节点slave2的配置文件redis_slave_6316.config：

与上面slave1配置文件需要修改的地方

pidfile ./run/redis_slaver1_6316.pid

port 6316

logfile "./run/logs/log_slaver1_6316.log"

dbfilename dump_6316.rdb

appendfilename "appendonly_6316.aof"

4、从节点slave3的配置文件redis_slave_6317.config：

与上面slave1配置文件需要修改的地方

pidfile ./run/redis_slaver1_6317.pid

port 6317

logfile "./run/logs/log_slaver1_6317.log"

dbfilename dump_6317.rdb

appendfilename "appendonly_6317.aof"

5、哨兵sentinel1的配置文件sentinel_26301.config:

# Example sentinel.conf

port 26301

# sentinel announce-ip 1.2.3.4

dir ./run/tmp

sentinel monitor master1 192.168.0.12 6301 2

# sentinel auth-pass mymaster MySUPER--secret-0123passw0rd

# sentinel down-after-milliseconds <master-name> <milliseconds>

sentinel down-after-milliseconds master1 30000

sentinel parallel-syncs master1 1

sentinel failover-timeout master1 180000

# sentinel notification-script mymaster /var/redis/notify.sh

# sentinel client-reconfig-script mymaster /var/redis/reconfig.sh

# sentinel can-failover master1 yes

logfile "/redis-3.0.0/run/logs/sentinellog_m1_26301.log"

6、哨兵sentinel2的配置文件sentinel_26302.config:

# Example sentinel.conf

port 26302

# sentinel announce-ip 1.2.3.4

dir ./run/tmp

sentinel monitor master1 192.168.0.12 6301 2

# sentinel auth-pass mymaster MySUPER--secret-0123passw0rd

# sentinel down-after-milliseconds <master-name> <milliseconds>

sentinel down-after-milliseconds master1 30000

sentinel parallel-syncs master1 1

sentinel failover-timeout master1 180000

# sentinel notification-script mymaster /var/redis/notify.sh

# sentinel client-reconfig-script mymaster /var/redis/reconfig.sh

# sentinel can-failover master1 yes

logfile "/redis-3.0.0/run/logs/sentinellog_m1_26302.log"

7、哨兵sentinel3的配置文件sentinel_26303.config:

# Example sentinel.conf

port 26303

# sentinel announce-ip 1.2.3.4

dir ./run/tmp

sentinel monitor master1 192.168.0.12 6301 2

# sentinel auth-pass mymaster MySUPER--secret-0123passw0rd

# sentinel down-after-milliseconds <master-name> <milliseconds>

sentinel down-after-milliseconds master1 30000

sentinel parallel-syncs master1 1

sentinel failover-timeout master1 180000

# sentinel notification-script mymaster /var/redis/notify.sh

# sentinel client-reconfig-script mymaster /var/redis/reconfig.sh

# sentinel can-failover master1 yes

logfile "/redis-3.0.0/run/logs/sentinellog_m1_26303.log"

六、启动redis和哨兵服务

注意：第一次要先启动redis主服务、从服务，然后才能启动哨兵服务

1、进入redis安装目录的根目录

2、启动redis主节点

[root@localhost redis-3.0.0]# redis-server redis_master_6301.config &

3、启动redis从节点

[root@localhost redis-3.0.0]# redis-server redis_slave_6315.config &

[root@localhost redis-3.0.0]# redis-server redis_slave_6316.config &

[root@localhost redis-3.0.0]# redis-server redis_slave_6317.config &

4、启动哨兵

[root@localhost redis-3.0.0]# redis-sentinel sentinel_26301.config &

[root@localhost redis-3.0.0]# redis-sentinel sentinel_26302.config &

[root@localhost redis-3.0.0]# redis-sentinel sentinel_26303.config &



到目前为止整个redis+sentinel的安装搭建环境就算完成



七、一些常用命令

进入redis的安装目录

启动redis-server：

./redis-server redis_6305.conf &

启动redis-sentinel 

./redis-sentinel sentinel_6301.config

./redis-server sentinel_6316.conf --sentinel &

查看某个端口信息：

./redis-cli -p 6301 info

./redis-cli -p 6301 info Replication

./redis-cli -p 6301 info Sentinel

查看某个主机上的信息redis信息

./redis-cli -h 10.16.41.52 -p 6316 info

./redis-cli -h 10.16.41.52 -p 6316 info Replication

./redis-cli -h 10.16.41.52 -p 6316 info Sentinel

关闭本机redis服务

./redis-cli -p 6379 shutdown

关闭远程主机redis服务

./redis-cli -h 192.168.9.18 -p 6379 shutdown

客户端连接本机

./redis-cli -p 6301

客户端连接远程机

./redis-cli -h 10.16.41.53 -p 6301

切换连接

ssh app@10.16.41.52



使用命令关闭RDB持久化：在客户端执行127.0.0.1:6316> config set save ""