Redis的编译安装
blog迁移至:http://www.micmiu.comRedis 官网：http://redis.io/
实验环境：
[*]OS：centos6
[*]软件：redis2.4.4(截至本文的最新版本)
测试整个编译安装的基本过程如下：
.编译安装过程
# wget http://redis.googlecode.com/files/redis-2.4.4.tar.gz
# tar -zxvf redis-2.4.4.tar.gz
# mv redis-2.4.4 /usr/local/
# cd /usr/local/redis-2.4.4
ps: 该软件的编译安装不需要执行 ./configure 和make install 命令
# make
如果看到有以下提示信息：
Hint: To run 'make test' is a good idea ;)
再执行命令# make test
应该会看到如下信息：
\o/ All tests passed without errors!
Cleanup: may take some time... OK
上面的提示信息表示：测试没有错误都通过，编译成功。
. 配置：
# cp src/redis-server /usr/local/bin
# cp src/redis-benchmark /usr/local/bin
# cp src/redis-cli /usr/local/bin
# cp src/redis-check-dump /usr/local/bin
# cp src/redis-check-aof /usr/local/bin
这样以后就可以直接在shell窗口下调用这些命令了。
复制配置文件redis.conf：
# mkdir /usr/local/etc/redis
# cp redis.conf /usr/local/etc/redis
启动redis：
# redis-server /usr/local/etc/redis/redis.conf
控制台会看到如下信息：
16 Dec 16:37:41 * Server started, Redis version 2.4.4
16 Dec 16:37:41 # 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.
16 Dec 16:37:41 * The server is now ready to accept connections on port 6379
16 Dec 16:37:41 - 0 clients connected (0 slaves), 717480 bytes in use
16 Dec 16:37:46 - 0 clients connected (0 slaves), 717480 bytes in use
16 Dec 16:37:51 - 0 clients connected (0 slaves), 717480 bytes in use
ps：默认配置中redis程序启动不是以后台守护进程的模式启动的
. 修改配置文件：/usr/local/etc/redis/redis.conf
具体的参数含义可以看conf文件中的注释，测试时只是简单修改了下面几个参数：
daemonize no => yes 是否后天守护进程
logfile stdout => /var/log/redis.log 日志文件
dir ./ => /var/db/redis 目录设置
ps: 要确保你设置的目录已经存在
执行下面的测试命令：
# redis-server /usr/local/etc/redis/redis.conf
# redis-cli
redis 127.0.0.1:6379> set myblog "sjsky.iyunv.com"
OK
redis 127.0.0.1:6379> get myblog
"sjsky.iyunv.com"
redis 127.0.0.1:6379> shutdown
redis 127.0.0.1:6379> exit
可以看到数据库的数据文件：
# ls -lh /var/db/redis/
总用量 4.0K
-rw-r--r--. 1 root root 36 12月 16 17:05 dump.rdb
可以看到redis的日志文件如下:
# cat /var/log/redis.log
16 Dec 17:04:53 * Server started, Redis version 2.4.4
16 Dec 17:04:53 # 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.
16 Dec 17:04:53 * DB loaded from disk: 0 seconds
16 Dec 17:04:53 * The server is now ready to accept connections on port 6379
16 Dec 17:04:53 - 0 clients connected (0 slaves), 717512 bytes in use
16 Dec 17:04:58 - 0 clients connected (0 slaves), 717512 bytes in use
16 Dec 17:05:01 - Accepted 127.0.0.1:54313
16 Dec 17:05:03 - 1 clients connected (0 slaves), 726040 bytes in use
16 Dec 17:05:08 - 1 clients connected (0 slaves), 726040 bytes in use
16 Dec 17:05:13 - DB 0: 1 keys (0 volatile) in 4 slots HT.
16 Dec 17:05:13 - 1 clients connected (0 slaves), 726296 bytes in use
16 Dec 17:05:18 - DB 0: 1 keys (0 volatile) in 4 slots HT.
16 Dec 17:05:18 - 1 clients connected (0 slaves), 726280 bytes in use
16 Dec 17:05:20 # User requested shutdown...
16 Dec 17:05:20 * Saving the final RDB snapshot before exiting.
16 Dec 17:05:21 * DB saved on disk
16 Dec 17:05:21 * Removing the pid file.
16 Dec 17:05:21 # Redis is now ready to exit, bye bye...
有关上面日志中的告警信息的说明：
# 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.
这个告警信息是由于当内存分配策略设置为“0”时，启动会有警告提示，根据它的提示我们可以修改相应的配置文件/etc/sysctl.conf或者是通过sysctl命令设置，使之生效即可。
本文连接：http://sjsky.iyunv.com/blog/1313886
转载请注明来自：Michael's blog @ http://sjsky.iyunv.com
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