redis安装，主从集群，redis主从集群
redis安装，主从集群，redis主从集群
1：服务端 下载 $ wget http://download.redis.io/releases/redis-2.8.13.tar.gz 解压 $ tar xzf redis-2.8.13.tar.gz $ cd redis-2.8.13 编译 $ make
[jifeng@jifeng04 ~]$ tar xzf redis-2.8.13.tar.gz
[jifeng@jifeng04 ~]$ cd redis-2.8.13
[jifeng@jifeng04 redis-2.8.13]$ make
cd src && make all
......出现一大堆信息
Hint: To run 'make test' is a good idea ;)
make[1]: Leaving directory `/home/jifeng/redis-2.8.13/src'
[jifeng@jifeng04 redis-2.8.13]$ [jifeng@jifeng04 redis-2.8.13]$ src/redis-server
[6675] 10 Aug 17:19:48.837 # Warning: no config file specified, using the default config. In order to specify a config file use src/redis-server /path/to/redis.conf
[6675] 10 Aug 17:19:48.838 # You requested maxclients of 10000 requiring at least 10032 max file descriptors.
[6675] 10 Aug 17:19:48.838 # Redis can't set maximum open files to 10032 because of OS error: Operation not permitted.
[6675] 10 Aug 17:19:48.838 # Current maximum open files is 1024. maxclients has been reduced to 4064 to compensate for low ulimit. If you need higher maxclients increase 'ulimit -n'.
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 2.8.13 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in stand alone mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 6379
| `-._ `._ / _.-' | PID: 6675
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
[6675] 10 Aug 17:19:48.839 # Server started, Redis version 2.8.13
[6675] 10 Aug 17:19:48.839 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
[6675] 10 Aug 17:19:48.839 * The server is now ready to accept connections on port 6379
测试一下连接redis $ src/redis-cli
设置键值 redis> set foo bar
OK
读取键值 redis> get foo "bar"
2：集群配置
用一致性哈希，做多个主从，可以做主从集群。
主从配置
配置Master-Slave，只需要在Slave上配置Master节点IP Port：
[jifeng@jifeng04 redis-2.8.13]$ vi redis.conf################################# REPLICATION #################################
# Master-Slave replication. Use slaveof to make a Redis instance a copy of
# another Redis server. Note that the configuration is local to the slave
# so for example it is possible to configure the slave to save the DB with a
# different interval, or to listen to another port, and so on.
#
# slaveof <masterip> <masterport>slaveof 10.3.7.212 6379启动slave
[jifeng@jifeng04 redis-2.8.13]$ src/redis-server ./redis.conf
[6762] 10 Aug 17:46:46.907 # You requested maxclients of 10000 requiring at least 10032 max file descriptors.
[6762] 10 Aug 17:46:46.907 # Redis can't set maximum open files to 10032 because of OS error: Operation not permitted.
[6762] 10 Aug 17:46:46.907 # Current maximum open files is 1024. maxclients has been reduced to 4064 to compensate for low ulimit. If you need higher maxclients increase 'ulimit -n'.
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 2.8.13 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in stand alone mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 6379
| `-._ `._ / _.-' | PID: 6762
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
[6762] 10 Aug 17:46:46.915 # Server started, Redis version 2.8.13
[6762] 10 Aug 17:46:46.916 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
[6762] 10 Aug 17:46:46.916 * DB loaded from disk: 0.000 seconds
[6762] 10 Aug 17:46:46.916 * The server is now ready to accept connections on port 6379
[6762] 10 Aug 17:46:47.916 * Connecting to MASTER 10.3.7.212:6379
[6762] 10 Aug 17:46:47.916 * MASTER <-> SLAVE sync started
[6762] 10 Aug 17:46:47.916 * Non blocking connect for SYNC fired the event.
[6762] 10 Aug 17:46:47.917 * Master replied to PING, replication can continue...
[6762] 10 Aug 17:46:47.917 * Partial resynchronization not possible (no cached master)
[6762] 10 Aug 17:46:47.917 * Full resync from master: 925b249e41d001e66c4e683983439c346b96571f:1
[6762] 10 Aug 17:46:47.952 * MASTER <-> SLAVE sync: receiving 29 bytes from master
[6762] 10 Aug 17:46:47.952 * MASTER <-> SLAVE sync: Flushing old data
[6762] 10 Aug 17:46:47.952 * MASTER <-> SLAVE sync: Loading DB in memory
[6762] 10 Aug 17:46:47.952 * MASTER <-> SLAVE sync: Finished with success
测试
Master写，Slave读：
OK!!
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