Puppet模块(九)：redis模块
一、模块说明Redis是一个开源的使用ANSI C语言编写、支持网络、可基于内存亦可持久化的日志型、Key-Value数据库，并提供多种语言的API。
数据持久化有快照方式和日志追加方式，这里使用快照方式，定期将数据保存在dump.rdb文件中
配置主从同步，可让多个slave分摊读请求的负载，也可在master禁用数据持久化，减轻负担，只在slave配置持久化。
二、目录结构
三、代码展示1、files目录 redis #redis服务脚本
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#!/bin/sh
# chkconfig: 2345 80 90
# Simple Redis init.d script conceived to work on Linux systems
# as it does use of the /proc filesystem.
# src file is/usr/local/redis/utils/redis_init_script
REDISPORT=6379
EXEC=/usr/local/bin/redis-server
CLIEXEC=/usr/local/bin/redis-cli
PIDFILE=/var/run/redis.pid
CONF="/etc/redis.conf"
case "$1" in
start)
if [ -f $PIDFILE ]
then
echo "$PIDFILE exists, process is already running or crashed"
else
echo "Starting Redis server..."
$EXEC $CONF &
fi
;;
stop)
if [ ! -f $PIDFILE ]
then
echo "$PIDFILE does not exist, process is not running"
else
PID=$(cat $PIDFILE)
echo "Stopping ..."
$CLIEXEC -p $REDISPORT shutdown
while [ -x /proc/${PID} ]
do
echo "Waiting for Redis to shutdown ..."
sleep 1
done
echo "Redis stopped"
fi
;;
*)
echo "Please use start or stop as first argument"
;;
esac
redis-2.8.19.tar.gz #redis安装包，下载 http://download.redis.io/releases/redis-2.8.19.tar.gz
2、manifests目录 init.pp
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class redis{
Exec { path => "/usr/bin:/bin:/usr/sbin:/sbin" }
include redis::install,redis::config,redis::service
}
install.pp
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class redis::install {
Exec{path => ['/usr/bin','/usr/sbin','/bin'] }
package { ['gcc','gcc-c++','perl','pcre','zlib-devel','openssl-devel','tcl']:
ensure => installed,
before => Exec['install'],
}
file { 'redis':
path => '/usr/local/src/redis-2.8.19.tar.gz',
ensure=> directory,
source=> 'puppet:///modules/redis/redis-2.8.19.tar.gz',
ignore=> '.svn',
owner => root,
group => root,
mode => '0640',
}
exec { 'tar redis':
command => 'tar -zxf redis-2.8.19.tar.gz',
cwd => '/usr/local/src',
refreshonly => true,
subscribe => File['redis'],
}
exec { 'mv redis':
command => 'mv -f redis-2.8.19 /usr/local/redis',
cwd => '/usr/local/src',
refreshonly => true,
subscribe => Exec['tar redis'],
}
exec { 'install':
command => 'make && make install',
cwd => '/usr/local/redis',
refreshonly => true,
subscribe => Exec['mv redis'],
}
}
config.pp
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class redis::config {
case $redis_conf {
master: {
file { '/etc/redis.conf':
ensure=> file,
owner => root,
group => root,
mode => 400,
content => template("redis/Master-redis.conf.erb"),
notify=> Class['redis::service'],
require => Class['redis::install'],
}
}
slave: {
file { '/etc/redis.conf':
ensure=> file,
owner => root,
group => root,
mode => 400,
content => template("redis/Slave-redis.conf.erb"),
notify=> Class['redis::service'],
require => Class['redis::install'],
}
}
}
file { 'redisd':
path => '/etc/rc.d/init.d/redis',
ensure=> file,
owner => root,
group => root,
mode => 755,
source=> 'puppet:///modules/redis/redis',
}
exec { 'iptables -I INPUT -p tcp --dport 6379 -j ACCEPT && service iptables save':
unless=> 'grep "6379" /etc/sysconfig/iptables 2>/dev/null',
}
}
service.pp
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class redis::service {
service { 'redis':
ensure => 'running',
enable => 'true',
hasrestart => 'false',
hasstatus=> 'false',
start => 'service redis start',
stop => 'service redis stop',
require => Class["redis::install"],
subscribe=> Class["redis::config"],
}
}
3、templates目录
Master-redis.conf.erb
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# Redis Master configuration file example
daemonize yes
pidfile /var/run/redis.pid
port 6379
timeout 0
tcp-keepalive 0
loglevel notice
logfile /var/log/redis.log
databases 16
save 86400 1
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir ./
slave-serve-stale-data yes
slave-read-only yes
repl-disable-tcp-nodelay no
slave-priority 100
maxmemory 3gb
maxmemory-policy volatile-lru
maxmemory-samples 3
appendonly no
appendfilename appendonly.aof
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 1024
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-entries 512
list-max-ziplist-value 64
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit slave 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
aof-rewrite-incremental-fsync yes
Slave-redis.conf.erb
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# Redis Slave configuration file example
daemonize yes
pidfile /var/run/redis.pid
port 6379
timeout 0
tcp-keepalive 0
loglevel notice
logfile /var/log/redis.log
databases 16
save 86400 1
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir ./
slaveof <%=@master_server %> 6379
slave-serve-stale-data yes
slave-read-only yes
repl-disable-tcp-nodelay no
slave-priority 100
maxmemory 3gb
maxmemory-policy volatile-lru
maxmemory-samples 3
appendonly no
appendfilename appendonly.aof
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 1024
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-entries 512
list-max-ziplist-value 64
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit slave 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
aof-rewrite-incremental-fsync yes
四、Foreman配置
参考前两编文章
主库参数：
从库参数：
五、Redis命令行管理
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# redis-cli #连接redis数据库
redis127.0.0.1:6379>
>ping #测试连接
>echo test #测试打印
>select 1 #选择数据库0~15
> dbsize #返回当前数据库key数量
> info #获取服务器状态和一些统计信息
> monitor #实时监听并返回redis服务器接收到的所有请求信息
> config get parameter #获取一个redis配置参数信息，*表示全部
> config set parameter value #设置一个redis配置参数信息
> config resetstat #重置INFO命令的统计信息:Keyspace命中数、Keyspace错误数、处理命令数，接收连接数、过期key数等
> debug object key #获取一个key的调试信息
> debug segfault #制造一次服务器当机
> flushdb #删除当前数据库中的所有key
> flushall #删除所有数据库中所有key
> client list #查看当前所有客户端状态
> shutdown #把数据同步保存到磁盘上，并关闭redis服务
> quit #退出连接
六、Redis 桌面管理工具http://redisdesktop.com/download
https://github.com/uglide/RedisDesktopManager/wiki/Quick-Start
Redis DesktopManager 是一个快速、简单、支持跨平台的 Redis 桌面管理工具，基于 Qt 5 开发，支持通过 SSH Tunnel 连接。
七、程序使用
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<?xml version="1.0"?>
<configuration>
<appSettings>
<add key="Redis.ReadWriteHosts" value="10.188.1.40:6379" />
<add key="Redis.ReadOnlyHosts" value="10.188.1.41:6379" />
</appSettings>
</configuration>
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