Redis 安装，主从配置及Sentinel配置自动Failover

Posted 2020-06-22

1、安装redis

 首页地址：http://redis.io/

下载地址：http://download.redis.io/ 下载最新的源码包

wget http://download.redis.io/releases/redis-2.6.16.tar.gz
tar -zxvf redis-stable.tar.gz -C /usr/local/
cd /usr/local/redis-stable/
make MALLOC=libc
make install

2、运行

加载配置文件并后台运行

redis-server /usr/local/redis-stable/redis.conf &

#redis-cli （命令行工具）

3、测试

# redis-benchmark --help 获取帮助信息，其中包含压力测试命令样例

实际测试举例

[[email protected]~]# redis-benchmark -t set -c 20 -n 1000000 -r 100000000
====== SET ======
 1000000 requests completed in 8.92 seconds
 20 parallel clients
 3 bytes payload
 keep alive: 1
100.00% <= 0 milliseconds
112095.06 requests per second

4、主从配置及测试:

主	10.10.10.34	gc-redis1	6379
从	10.10.10.35	gc-redis2	6379
从	10.10.10.36	gc-redis3	6379

#主服务器(10.34)上做如下配置，其他默认即可：

[[email protected] redis-stable]# vim /usr/local/redis-stable/redis.conf 

masterauth "redispass"
requirepass "redispass"

#从服务器上(10.35,10.36)做如下配置，其他默认即可：

[[email protected] redis-stable]# vim /usr/local/redis-stable/redis.conf 
slaveof 10.10.10.34 6379
masterauth "redispass"
requirepass "redispass"

#启动主、从redis服务：

redis-server /usr/local/redis-stable/redis.conf &

#主服务器显示信息：

[13997] 03 Nov 09:57:21.045 * Slave ask for synchronization
[13997] 03 Nov 09:57:21.045 * Starting BGSAVE for SYNC
[13997] 03 Nov 09:57:21.046 * Background saving started by pid 14002
[14002] 03 Nov 09:57:21.058 * DB saved on disk
[14002] 03 Nov 09:57:21.059 * RDB: 0 MB of memory used by copy-on-write
[13997] 03 Nov 09:57:21.070 * Background saving terminated with success
[13997] 03 Nov 09:57:21.070 * Synchronization with slave succeeded

#从服务器显示信息：

[3496] 03 Nov 09:56:41.953 * Connecting to MASTER...
  [3496] 03 Nov 09:56:41.953 * MASTER <-> SLAVE sync started
  [3496] 03 Nov 09:56:41.954 * Non blocking connect for SYNC fired the event.
  [3496] 03 Nov 09:56:41.954 * Master replied to PING, replication can continue...
  [3496] 03 Nov 09:56:42.055 * MASTER <-> SLAVE sync: receiving 18 bytes from master
  [3496] 03 Nov 09:56:42.055 * MASTER <-> SLAVE sync: Loading DB in memory
  [3496] 03 Nov 09:56:42.055 * MASTER <-> SLAVE sync: Finished with success
  [3499] 03 Nov 09:56:42.056 * SYNC append only file rewrite performed
  [3499] 03 Nov 09:56:42.057 * AOF rewrite: 0 MB of memory used by copy-on-write
  [3496] 03 Nov 09:56:42.057 * Background append only file rewriting started by pid 3499
  [3496] 03 Nov 09:56:42.154 * Background AOF rewrite terminated with success
  [3496] 03 Nov 09:56:42.154 * Parent diff successfully flushed to the rewritten AOF (0 bytes)
  [3496] 03 Nov 09:56:42.154 * Background AOF rewrite finished successfully

#主服务器查看主从信息

[[email protected] ~]# redis-cli -h 127.0.0.1 -a jrgcredispass info replication
# Replication
role:master
connected_slaves:2
slave0:ip=10.10.10.35,port=6379,state=online,offset=168812144,lag=1
slave1:ip=10.10.10.36,port=6379,state=online,offset=168812144,lag=0
master_repl_offset:168812281
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:167763706
repl_backlog_histlen:1048576

#从服务器查看主从信息

[[email protected] ~]# redis-cli -h 127.0.0.1 -a jrgcredispass info replication
# Replication
role:slave
master_host:10.10.10.34
master_port:6379
master_link_status:up
master_last_io_seconds_ago:0
master_sync_in_progress:0
slave_repl_offset:168809239
slave_priority:100
slave_read_only:1
connected_slaves:0
master_repl_offset:0
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0

  #写同步测试

 #主服务器 

[[email protected] ~]# redis-cli -h 127.0.0.1 -a redispass 

redis 127.0.0.1:6379> set a 123
OK
redis 127.0.0.1:6379> get a
"123"

#从服务器