redis sentinel哨兵 集群配置

1.结构

master1       redis-server（6079）          redis-sentinel（26379）

node1          redis-server（6079）          redis-sentinel（26379）

node2         redis-server（6079）          redis-sentinel（26379）

 

2. redis安装

1 下载
wget http://download.redis.io/releases/redis-5.0.8.tar.gz

2 安装
mv  redis-5.0.8.tar.gz  /data/tools/
tar -zxvf   redis-5.0.8.tar.gz 
cd   redis-5.0.8
make 
make PREFIX=/data/redis  install
make install

#安装自动shell

cd utils/
./install_server.sh

Welcome to the redis service installer
This script will help you easily set up a running redis server

Please select the redis port for this instance: [6379] 
Selecting default: 6379
Please select the redis config file name [/etc/redis/6379.conf] 
Selected default - /etc/redis/6379.conf
Please select the redis log file name [/var/log/redis_6379.log] /data/redis/logs/redis_6379.conf
Please select the data directory for this instance [/var/lib/redis/6379] /data/redis/data/6379
Please select the redis executable path [/usr/local/bin/redis-server] 
Selected config:
Port : 6379
Config file : /etc/redis/6379.conf
Log file : /data/redis/logs/redis_6379.conf
Data dir : /data/redis/data/6379
Executable : /usr/local/bin/redis-server
Cli Executable : /usr/local/bin/redis-cli
Is this ok? Then press ENTER to go on or Ctrl-C to abort.
Copied /tmp/6379.conf => /etc/init.d/redis_6379
Installing service...
Successfully added to chkconfig!
Successfully added to runlevels 345!
Starting Redis server...
Installation successful!

 

3. 修改配置文件

master1 配置文件



bind 172.16.230.22
protected-mode yes
port 6379
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
supervised no
pidfile "/data/redis/run/redis_6379.pid"
loglevel notice
logfile "/data/redis/logs/redis_6379.log"
databases 16
always-show-logo yes
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename "dump.rdb"
dir "/data/redis/6379"
replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
replica-priority 100
lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
replica-lazy-flush no
appendonly no
appendfilename "appendonly.aof"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
aof-use-rdb-preamble yes
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
latency-monitor-threshold 0
notify-keyspace-events ""
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
stream-node-max-bytes 4096
stream-node-max-entries 100
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit replica 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
dynamic-hz yes
aof-rewrite-incremental-fsync yes
rdb-save-incremental-fsync yes
requirepass SenyinT,32#pwd
masterauth  SenyinT,32#pwd




 


node1 配置文件




bind 172.16.230.23
protected-mode yes
port 6379
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
supervised no
pidfile "/data/redis/run/redis_6379.pid"
loglevel notice
logfile "/data/redis/logs/redis_6379.log"
databases 16
always-show-logo yes
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename "dump.rdb"
dir "/data/redis/6379"
replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
replica-priority 100
lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
replica-lazy-flush no
appendonly no
appendfilename "appendonly.aof"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
aof-use-rdb-preamble yes
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
latency-monitor-threshold 0
notify-keyspace-events ""
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
stream-node-max-bytes 4096
stream-node-max-entries 100
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit replica 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
dynamic-hz yes
aof-rewrite-incremental-fsync yes
rdb-save-incremental-fsync yes
requirepass SenyinT,32#pwd
replicaof 172.16.230.85 6379
masterauth SenyinT,32#pwd




 


 


node2 配置文件




bind 172.16.230.24
protected-mode yes
port 6379
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
supervised no
pidfile "/data/redis/run/redis_6379.pid"
loglevel notice
logfile "/data/redis/logs/redis_6379.log"
databases 16
always-show-logo yes
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename "dump.rdb"
dir "/data/redis/6379"
replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
replica-priority 100
lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
replica-lazy-flush no
appendonly no
appendfilename "appendonly.aof"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
aof-use-rdb-preamble yes
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
latency-monitor-threshold 0
notify-keyspace-events ""
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
stream-node-max-bytes 4096
stream-node-max-entries 100
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit replica 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
dynamic-hz yes
aof-rewrite-incremental-fsync yes
rdb-save-incremental-fsync yes
requirepass SenyinT,32#pwd
replicaof 172.16.230.85 6379
masterauth SenyinT,32#pwd




 


重新启动redis




[root@node1 ~]# /etc/init.d/redis_6379 restart




 


二、Redis哨兵模式


Redis Sentinel是Redis高可用的实现方案。Sentinel是一个管理多个Redis实例的工具，它可以实现对Redis的监控、通知、自动故障转移。


Sentinel的主要功能包括主节点存活检测、主从运行情况检测、自动故障转移（failover）、主从切换。Redis的Sentinel最小配置是一主一从。 Redis的Sentinel系统可以用来管理多个Redis服务器，该系统可以执行以下四个任务：


    

  • 

    监控
    

    Sentinel会不断的检查主服务器和从服务器是否正常运行。
    

    • 

  • 

    通知
    

    当被监控的某个Redis服务器出现问题，Sentinel通过API脚本向管理员或者其他的应用程序发送通知。
    

    • 

  • 

    自动故障转移
    

    当主节点不能正常工作时，Sentinel会开始一次自动的故障转移操作，它会将与失效主节点是主从关系的其中一个从节点升级为新的主节点， 并且将其他的从节点指向新的主节点。
    

    • 

  • 

    配置提供者
    

    在Redis Sentinel模式下，客户端应用在初始化时连接的是Sentinel节点集合，从中获取主节点的信息。
    

    • 



 


sentinel master1 配置文件




 cat /etc/redis/sentinel.conf

# 端口
port 26379

# 是否后台启动
daemonize yes

# pid文件路径
pidfile /var/run/redis-sentinel.pid

# 日志文件路径
logfile "/data/redis/logs/sentinel.log"

# 定义工作目录
dir /data/redis/sentinel

# 定义Redis主的别名, IP, 端口，这里的2指的是需要至少2个Sentinel认为主Redis挂了才最终会采取下一步行为
sentinel monitor mymaster 172.16.230.22 6379 2

#设置密码
sentinel auth-pass mymaster SenyinT,32#pwd

# 如果mymaster 30秒内没有响应，则认为其主观失效
sentinel down-after-milliseconds mymaster 30000

# 如果master重新选出来后，其它slave节点能同时并行从新master同步数据的台数有多少个，显然该值越大，所有slave节点完成同步切换的整体速度越快，但如果此时正好有人在访问这些slave，可能造成读取失败，影响面会更广。最保守的设置为1，同一时间，只能有一台干这件事，这样其它slave还能继续服务，但是所有slave全部完成缓存更新同步的进程将变慢。
sentinel parallel-syncs mymaster 1

# 该参数指定一个时间段，在该时间段内没有实现故障转移成功，则会再一次发起故障转移的操作，单位毫秒
sentinel failover-timeout mymaster 180000

# 不允许使用SENTINEL SET设置notification-script和client-reconfig-script。
sentinel deny-scripts-reconfig yes




 


node1 node2 节点配置文件




[root@node1 ~]# cat  /etc/redis/sentinel.conf 
port 26379
daemonize yes
pidfile "/var/run/redis-sentinel.pid"
logfile "/data/redis/logs/sentinel.log"
dir "/data/redis/sentinel"
sentinel monitor mymaster 172.16.230.22 6379 2
senyinel auth-pass mymaster SenyinT.32#pwd
sentinel down-after-milliseconds mymaster 30000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 180000
sentinel deny-scripts-reconfig yes


[root@node2 ~]# cat  /etc/redis/sentinel.conf 
port 26379
daemonize yes
pidfile "/var/run/redis-sentinel.pid"
logfile "/data/redis/logs/sentinel.log"
dir "/data/redis/sentinel"
sentinel monitor mymaster 172.16.230.22 6379 2
sentinel monitor mymaster SenyinT,32#pwd
sentinel down-after-milliseconds mymaster 30000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 180000
sentinel deny-scripts-reconfig yes




 


启动sentinel




启动顺序 主redis  ----  从redis ---- sentinel 1 2 3

[root@master1 ~]# redis-sentinel  /etc/redis/sentinel.conf 
[root@node1 ~]# redis-sentinel  /etc/redis/sentinel.conf 
[root@node2 ~]# redis-sentinel  /etc/redis/sentinel.conf 




 


 


sentinel 查看状态信息




redis-cli -p 26379

127.0.0.1:26379> sentinel master mymaster
 1) "name"
 2) "mymaster"
 3) "ip"
 4) "172.16.230.22"
 5) "port"
 6) "6379"
 7) "runid"
 8) "b5c70274f2c58e7d7263c67dde4e00d351f5d826"
 9) "flags"
10) "master"
11) "link-pending-commands"
12) "0"
13) "link-refcount"
14) "1"
15) "last-ping-sent"
16) "0"
17) "last-ok-ping-reply"
18) "490"
19) "last-ping-reply"
20) "490"
21) "down-after-milliseconds"
22) "30000"
23) "info-refresh"
24) "4362"
25) "role-reported"
26) "master"
27) "role-reported-time"
28) "3909391"
29) "config-epoch"
30) "1"
31) "num-slaves"
32) "2"
33) "num-other-sentinels"
34) "2"
35) "quorum"
36) "2"
37) "failover-timeout"
38) "180000"
39) "parallel-syncs"
40) "1"


# 查看从状态
127.0.0.1:26379> sentinel slaves  mymaster
1)  1) "name"
    2) "172.16.230.23:6379"
    3) "ip"
    4) "172.16.230.23"
    5) "port"
    6) "6379"
    7) "runid"
    8) "442367635e8d0a844fdb5c6d1ead098f6fb77790"
    9) "flags"
   10) "slave"
   11) "link-pending-commands"
   12) "0"
   13) "link-refcount"
   14) "1"
   15) "last-ping-sent"
   16) "0"
   17) "last-ok-ping-reply"
   18) "815"
   19) "last-ping-reply"
   20) "815"
   21) "down-after-milliseconds"
   22) "30000"
   23) "info-refresh"
   24) "4351"
   25) "role-reported"
   26) "slave"
   27) "role-reported-time"
   28) "3659268"
   29) "master-link-down-time"
   30) "0"
   31) "master-link-status"
   32) "ok"
   33) "master-host"
   34) "172.16.230.24"
   35) "master-port"
   36) "6379"
   37) "slave-priority"
   38) "100"
   39) "slave-repl-offset"
   40) "905325"
2)  1) "name"
    2) "172.16.230.24:6379"
    3) "ip"
    4) "172.16.230.24"
    5) "port"
    6) "6379"
    7) "runid"
    8) "dc740b5af985475d7268c88658bd5eddec0eb812"
    9) "flags"
   10) "slave"
   11) "link-pending-commands"
   12) "0"
   13) "link-refcount"
   14) "1"
   15) "last-ping-sent"
   16) "0"
   17) "last-ok-ping-reply"
   18) "815"
   19) "last-ping-reply"
   20) "815"
   21) "down-after-milliseconds"
   22) "30000"
   23) "info-refresh"
   24) "9754"
   25) "role-reported"
   26) "slave"
   27) "role-reported-time"
   28) "3935708"
   29) "master-link-down-time"
   30) "0"
   31) "master-link-status"
   32) "ok"
   33) "master-host"
   34) "172.16.230.24"
   35) "master-port"
   36) "6379"
   37) "slave-priority"
   38) "100"
   39) "slave-repl-offset"
   40) "904183"




 


 


参考：


https://www.cnblogs.com/linuxk/p/10718153.html


 






            

            
posted @ 
2020-04-30 16:02 
fengjian1585 
阅读(418) 
评论(0) 
编辑 
收藏 
举报