安装redis和phpredis模块

安装redis

#yum install tcl

#tar -zxf redis-3.0.3.tar.gz

#cp -r /usr/local/src/redis-3.0.3 /usr/local/redis-3

#cd /usr/local/redis-3
#make && make install

# vim redis.conf
daemonize yes

#cp redis-server /usr/local/bin/
#cp redis-cli /usr/local/bin/


redis启动脚本

#vim /etc/init.d/redis

#!/bin/bash
#
# Init file for redis
#
# chkconfig: - 80 12
# description: redis daemon
#
# processname: redis
# config: /etc/redis.conf
# pidfile: /var/run/redis.pid
source /etc/init.d/functions
#BIN="/usr/local/bin"
BIN="/usr/local/bin"
CONFIG="/usr/local/redis-3/redis.conf"
PIDFILE="/var/run/redis.pid"
### Read configuration
[ -r "$SYSCONFIG" ] && source "$SYSCONFIG"
RETVAL=0
prog="redis-server"
desc="Redis Server"
start() {
        if [ -e $PIDFILE ];then
             echo "$desc already running...."
             exit 1
        fi
        echo -n $"Starting $desc: "
        daemon $BIN/$prog $CONFIG
        RETVAL=$?
        echo
        [ $RETVAL -eq 0 ] && touch /var/lock/subsys/$prog
        return $RETVAL
}
stop() {
        echo -n $"Stop $desc: "
        killproc $prog
        RETVAL=$?
        echo
        [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$prog $PIDFILE
        return $RETVAL
}
#!/bin/bash
#
# Init file for redis
#
# chkconfig: - 80 12
# description: redis daemon
#
# processname: redis
# config: /etc/redis.conf
# pidfile: /var/run/redis.pid
source /etc/init.d/functions
#BIN="/usr/local/bin"
BIN="/usr/local/bin"
CONFIG="/usr/local/redis-3/redis.conf"
PIDFILE="/var/run/redis.pid"
### Read configuration
[ -r "$SYSCONFIG" ] && source "$SYSCONFIG"
RETVAL=0
prog="redis-server"
desc="Redis Server"
start() {
        if [ -e $PIDFILE ];then
             echo "$desc already running...."
             exit 1
        fi
        echo -n $"Starting $desc: "
        daemon $BIN/$prog $CONFIG
        RETVAL=$?
        echo
        [ $RETVAL -eq 0 ] && touch /var/lock/subsys/$prog
        return $RETVAL
}
stop() {
        echo -n $"Stop $desc: "
        killproc $prog
        RETVAL=$?
        echo
        [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$prog $PIDFILE
        return $RETVAL
}
restart() {
        stop
        start
}
case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  restart)
        restart
        ;;
  condrestart)
        [ -e /var/lock/subsys/$prog ] && restart
        RETVAL=$?
        ;;
  status)
        status $prog
        RETVAL=$?
        ;;
   *)
        echo $"Usage: $0 {start|stop|restart|condrestart|status}"
        RETVAL=1
esac
exit $RETVAL

#chmod +x /etc/init.d/redis

启动redis,最好先在配置文件里设置后台运行,不然启动的话是前台运行,会一直占用终端

# /etc/init.d/redis restart

报错(分三部分,三个WARNING)

4347:M 29 Sep 21:31:55.388 # Server started, Redis version 3.0.3

4347:M 29 Sep 21:31:55.388 # 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.

4347:M 29 Sep 21:31:55.388 # WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix this issue run the command 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' as root, and add it to your /etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled.

4347:M 29 Sep 21:31:55.388 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.

4347:M 29 Sep 21:31:55.388 * The server is now ready to accept connections on port 6379

(1)
解决方法
#vim /etc/sysctl.conf
加入
vm.overcommit_memory = 1
或者
#echo "vm.overcommit_memory=1" >> /etc/sysctl.conf

刷新生效
#sysctl -p

(2)
#echo never > /sys/kernel/mm/transparent_hugepage/enabled
#vim /etc/rc.local
加入
echo never > /sys/kernel/mm/transparent_hugepage/enabled

(3)
#echo 511 > /proc/sys/net/core/somaxconn

再启动一次,应该就没问题了

# /etc/init.d/redis restart

测试

# redis-cli
127.0.0.1:6379> set foo bar
OK
127.0.0.1:6379> bar
(error) ERR unknown command 'bar'
127.0.0.1:6379> get foo
"bar"
127.0.0.1:6379> quit

安装php扩展https://github.com/nicolasff/phpredis/archive/2.2.4.tar.gz#tar -zxf phpredis-2.2.4.tar.gz#phpize ./#./configure --with-php-config=/usr/local/php/bin/php-config #make && make install# vim /usr/local/php/etc/php.ini加入[redis]extension=/usr/local/php/lib/php/extensions/no-debug-non-zts-20100525/redis.so