发布于 2016-05-22 18:26:35 | 66 次阅读 | 评论: 0 | 来源: 网友投递

这里有新鲜出炉的Ruby教程,程序狗速度看过来!

Ruby编程语言

Ruby,一种为简单快捷的面向对象编程(面向对象程序设计)而创的脚本语言,在20世纪90年代由日本人松本行弘开发,遵守GPL协议和Ruby License。它的灵感与特性来自于 Perl、Smalltalk、Eiffel、Ada以及 Lisp 语言。


这篇文章主要介绍了Linux下Redis数据库的安装方法与自动启动脚本分享,自动启动脚本分别针对CentOS和Ubuntu系统来给出了编写示例,需要的朋友可以参考下

安装Redis

 (1) 下载Redis


wget http://redis.googlecode.com/files/redis-2.2.11.tar.gz
tar xzvf redis-2.2.11.tar.gz

 (2) 编译并安装Redis


make && make install

 (3) 复制并修改配置文件


cp redis.conf /etc/redis.conf
vi /etc/redis.conf

注意修改以下几项:


daemonize yes
loglevel warning
logfile /var/log/redis.log
maxmemory 2GB

(自行斟酌是不要开通Virtual Memory选项)

 (4) 设置Redis-Server自动启动服务

上网下载启动脚本(gist.github.com,搜索redis init.d),并简单修改

(至少需要修改redis、REDIS_CONF_FILE)


vi /etc/init.d/redisctl
chmod 755 redisctl
cp /etc/init.d/redisctl /etc/rc.d/init.d/redisctl \
&& ln -s /etc/init.d/redisctl /etc/rc.d/rc2.d/S90redisctl && ln -s /etc/init.d/redisctl /etc/rc.d/rc3.d/S90redisctl \
&& ln -s /etc/init.d/redisctl /etc/rc.d/rc4.d/S90redisctl && ln -s /etc/init.d/mongod /etc/rc.d/rc5.d/S90redisctl
chkconfig --add redisctl

(5) 重新启动后可以测试redis-server是否正常启动


```redis-cli set foo Bar
redis-cli get foo

Redis自动启动脚本


```ruby
#!/bin/sh
#
# redis - this script starts and stops the redis-server daemon
#
# chkconfig: 2345 90 10 
# description: Redis is a persistent key-value database
# processname: redis-server
# config: /etc/redis.conf
# config: /etc/sysconfig/redis
# pidfile: /var/run/redis.pid
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0
redis="/usr/local/bin/redis-server"
prog=$(basename $redis)
REDIS_CONF_FILE="/etc/redis.conf"
[ -f /etc/sysconfig/redis ] && . /etc/sysconfig/redis
lockfile=/var/lock/subsys/redis
start() {
 [ -x $redis ] || exit 5
 [ -f $REDIS_CONF_FILE ] || exit 6
 echo -n $"Starting $prog: "
 daemon $redis $REDIS_CONF_FILE
 retval=$?
 echo
 [ $retval -eq 0 ] && touch $lockfile
 return $retval
}
stop() {
 echo -n $"Stopping $prog: "
 killproc $prog -QUIT
 retval=$?
 echo
 [ $retval -eq 0 ] && rm -f $lockfile
 return $retval
}
restart() {
 stop
 start
}
reload() {
 echo -n $"Reloading $prog: "
 killproc $redis -HUP
 RETVAL=$?
 echo
}
force_reload() {
 restart
}
rh_status() {
 status $prog
}
rh_status_q() {
 rh_status >/dev/null 2>&1
}
case "$1" in
 start)
 rh_status_q && exit 0
 $1
 ;;
 stop)
 rh_status_q || exit 0
 $1
 ;;
 restart|configtest)
 $1
 retval=$?
 echo
 [ $retval -eq 0 ] && rm -f $lockfile
 return $retval
}
restart() {
 stop
 start
}
reload() {
 echo -n $"Reloading $prog: "
 killproc $redis -HUP
 RETVAL=$?
 echo
}
force_reload() {
 restart
}
rh_status() {
 status $prog
}
rh_status_q() {
 rh_status >/dev/null 2>&1
}
case "$1" in
 start)
 rh_status_q && exit 0
 $1
 ;;
 stop)
 rh_status_q || exit 0
 $1
 ;;
 restart|configtest)
 $1
 retval=$?
 echo
 [ $retval -eq 0 ] && rm -f $lockfile
 return $retval
}
restart() {
 stop
 start
}
reload() {
 echo -n $"Reloading $prog: "
 killproc $redis -HUP
 RETVAL=$?
 echo
}
force_reload() {
 restart
}
rh_status() {
 status $prog
}
rh_status_q() {
 rh_status >/dev/null 2>&1
}
case "$1" in
 start)
 rh_status_q && exit 0
 $1
 ;;
 stop)
 rh_status_q || exit 0
 $1
 ;;
 restart|configtest)
 $1
 ;;
 reload)
 rh_status_q || exit 7
 $1
 ;;
 force-reload)
 force_reload
 ;;
 status)
 rh_status
 ;;
 condrestart|try-restart)
 rh_status_q || exit 0
  ;;
 *)
 echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"
 exit 2
esac

Redis自动启动脚本

记得修改:

(1) —chuid group:user

(2) ln /etc/init.d/redisctl /etc/rc2.d/redisctl,重复rc3,rc4,rc5

启动脚本:


#! /bin/sh
### BEGIN INIT INFO
# Provides:  redis-server
# Required-Start: $syslog
# Required-Stop: $syslog
# Should-Start:  $local_fs
# Should-Stop:  $local_fs
# Default-Start: 2 3 4 5
# Default-Stop:  0 1 6
# Short-Description: redis-server - Persistent key-value db
# Description:  redis-server - Persistent key-value db
### END INIT INFO
DAEMON=/usr/local/bin/redis-server
DAEMON_ARGS=/etc/redis.conf
NAME=redis-server
DESC=redis-server
PIDFILE=/var/run/redis.pid
test -x $DAEMON || exit 0
test -x $DAEMONBOOTSTRAP || exit 0
set -e
case "$1" in
 start)
 echo -n "Starting $DESC: "
 touch $PIDFILE
 # chown redis:redis $PIDFILE
 if start-stop-daemon —start —quiet —umask 007 —pidfile $PIDFILE —chuid redis:redis —exec $DAEMON — $DAEMON_ARGS
 then
  echo "$NAME."
 else
  echo "failed"
 fi
 ;;
 stop)
 echo -n "Stopping $DESC: "
 if start-stop-daemon —stop —retry 10 —quiet —oknodo —pidfile $PIDFILE —exec $DAEMON
 then
  echo "$NAME."
 else
  echo "failed"
 fi
 rm -f $PIDFILE
 ;;
 restart|force-reload)
 ${0} stop
 ${0} start
 ;;
 *)
 echo "Usage: /etc/init.d/$NAME {start|stop|restart|force-reload}" >&2
 exit 1
 ;;
esac
exit 0



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