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This article describes how to compile redis and phpredis under Linux. Share it with everyone for your reference, the details are as follows:
1. Preparation
Download software: Download address of this website .
Operating system: CentOS 5.5
redis version: redis-2.6.9
2. Compile and install
tar zxvf redis-2.6.9.tar.gz //解压 cd redis-2.6.9 make //编译
If the following error occurs:
zmalloc.o: In function `zmalloc_used_memory':
/data/redis-2.6.9/src/zmalloc.c:223: undefined reference to `__sync_add_and_fetch_4'
collect2: ld returned 1 exit status
make[1]: *** [redis-server] Error 1
make[1]: Leaving directory `/data/redis-2.6.9/src'
make: *** [all] Error 2
Solution:
make CFLAGS="-march=i686"
When you see "Hint: To run 'make test' is a good idea ;)" it means the compilation is successful.
make install //安装
Note: In fact, make install is:
cp -p redis-server /usr/local/bin cp -p redis-benchmark /usr/local/bin cp -p redis-cli /usr/local/bin cp -p redis-check-dump /usr/local/bin cp -p redis-check-aof /usr/local/bin
In this way, redis is installed successfully.
The next step is to start Redis. The executable files generated after compilation above are copied to the /usr/local/bin directory. Their functions are:
redis-server: daemon startup program for Redis server
redis-cli: Redis command line operation tool. Of course, you can also use telnet to operate according to its plain text protocol
redis-benchmark: Redis performance testing tool, test the read and write performance of Redis under your system and your configuration
To start the Redis process, you only need to execute this /usr/local/bin/redis-server /path-to/redis.conf
When starting, you must follow the redis configuration file, so that Redis will start smoothly.
3. Problems that may occur when starting redis
Warning: 32 bit instance detected but no memory limit set. Setting 3 GB maxmemory limit with 'noeviction' policy now.
Solution: Modify the configuration file redis.conf and set maxmemory to maxmemory 1024000000 #Allocate 256M memory
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.
Workaround: Warning: Overcommitted memory set to 0! In low memory environments, background saves may fail. To fix this, add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and reboot (or run the command 'sysctl vm.overcommit_memory=1' ) for it to take effect.
There is no message when starting, indicating that the startup is successful. You can also use "netstat -tnl" to check whether port 6379 is started.
4. Open and close redis
Redis-server /usr/local/redis-2.6.9/redis.conf is enabled. Note: the redis configuration file needs to be specified
pkill redis-server stop redis
redis-cli shutdown stop redis
5. Parameter information of redis.conf
For information about redis and its parameters, please refer to this site's "Redis basic knowledge, installation, deployment, configuration notes "
6. Compile phpredis
unzip phpredis-master.zip cd phpredis-master /usr/local/php/bin/phpize ./configure –with-php-config=/usr/local/php/bin/php-config make && make install
Modify the php.ini file. Load the redis.so module and restart Apache!
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I hope this article will be helpful to everyone in PHP programming.