缓存数据库Redis——Redis群集部署

实验环境

用两台服务器模拟6台服务器（添加网卡）

主服务器Redis1：     ens33: 192.168.52.150     ens36: 192.168.52.153     ens37: 192.168.52.154从服务器Redis2：    ens33: 192.168.52.148    ens36: 192.168.52.155    ens37: 192.168.52.156

1、在两台服务器上都安装Redis（操作相同，只演示一台）

[root@localhost ~]# yum install gcc gcc-c++ make -y  ##安装环境组件[root@localhost ~]# mkdir /mnt/tools[root@localhost ~]# mount.cifs //192.168.100.100/tools /mnt/tools/  ##挂载Password for root@//192.168.100.100/tools:  [root@localhost ~]# cd /mnt/tools/redis/[root@localhost redis]# lsredis-5.0.7.tar.gz[root@localhost redis]# tar xf redis-5.0.7.tar.gz -C /opt/  ##解压[root@localhost redis]# cd /opt/[root@localhost opt]# lsredis-5.0.7  rh[root@localhost opt]# cd redis-5.0.7/[root@localhost redis-5.0.7]# make  ##编译[root@localhost redis-5.0.7]# make PREFIX=/usr/local/redis/ install  ##安装[root@localhost redis-5.0.7]# cd utils/[root@localhost utils]# ./install_server.sh    ##执行脚本进行配置Welcome to the redis service installerThis script will help you easily set up a running redis serverPlease select the redis port for this instance: [6379]   ##默认端口Selecting default: 6379Please select the redis config file name [/etc/redis/6379.conf]   ##配置文件Selected default - /etc/redis/6379.confPlease select the redis log file name [/var/log/redis_6379.log]   ##日志文件Selected default - /var/log/redis_6379.logPlease select the data directory for this instance [/var/lib/redis/6379]   ##数据文件Selected default - /var/lib/redis/6379Please select the redis executable path [] /usr/local/redis/bin/redis-server##可执行文件路径Selected config:Port           : 6379Config file    : /etc/redis/6379.confLog file       : /var/log/redis_6379.logData dir       : /var/lib/redis/6379Executable     : /usr/local/redis/bin/redis-serverCli Executable : /usr/local/redis/bin/redis-cliIs this ok? Then press ENTER to go on or Ctrl-C to abort.Copied /tmp/6379.conf => /etc/init.d/redis_6379Installing service...Successfully added to chkconfig!Successfully added to runlevels 345!Starting Redis server...Installation successful![root@localhost utils]# ln -s /usr/local/redis/bin/* /usr/local/bin/   ##便于系统识别[root@localhost utils]# netstat -ntap | grep 6379tcp    0    0 127.0.0.1:6379      0.0.0.0:*      LISTEN   44510/redis-server 

2、在两台服务器上修改配置文件（操作相同，只演示一台）

[root@localhost utils]# vim /etc/redis/6379.conf #bind 127.0.0.1          ##注释第70行的监听127地址,已监听所有地址protected-mode no     ##去掉第89行注释关闭安全保护port 6379                   ##去掉第93行注释,开启端口6379daemonize yes          ##去掉第137行注释,以独立进程启动cluster-enabled yes   ##去掉第833行注释,开启群集功能cluster-config-file nodes-6379.conf  ##去掉第841行注释,群集名称文件设置cluster-node-timeout 15000             ##去掉第847行注释,群集超时时间设置appendonly yes                                ##去掉第700行注释,开启aof持久化[root@localhost utils]# /etc/init.d/redis_6379 restart   ##重启服务Stopping ...Redis stoppedStarting Redis server...[root@localhost utils]# cd /var/lib/redis/6379/[root@localhost 6379]# lsappendonly.aof  dump.rdb  nodes-6379.conf   ##生成aof,rdb和节点文件

3、在主服务器上安装rvm，Ruby控制群集软件（只在主服务器）

[root@localhost utils]# gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3##导入key文件gpg: 已创建目录'/root/.gnupg'gpg: 新的配置文件'/root/.gnupg/gpg.conf'已建立gpg: 警告：在'/root/.gnupg/gpg.conf'里的选项于此次运行期间未被使用gpg: 钥匙环'/root/.gnupg/secring.gpg'已建立gpg: 钥匙环'/root/.gnupg/pubring.gpg'已建立gpg: 下载密钥'D39DC0E3'，从 hkp 服务器 keys.gnupg.netgpg: /root/.gnupg/trustdb.gpg：建立了信任度数据库gpg: 密钥 D39DC0E3：公钥"Michal Papis (RVM signing) "已导入gpg: 没有找到任何绝对信任的密钥gpg: 合计被处理的数量：1gpg:           已导入：1  (RSA: 1)[root@localhost utils]# curl -sSL https://get.rvm.io | bash -s stable ##安装rvm........................//省略过程[root@localhost utils]# source /etc/profile.d/rvm.sh  ##执行环境变量[root@localhost utils]# rvm list known   ##列出ruby可以安装的版本[root@localhost utils]# rvm install 2.4.1  ##安装2.4.1 版本[root@localhost utils]# rvm use 2.4.1  ##使用rubyruby2.4.1 版本Using /usr/local/rvm/gems/ruby-2.4.1[root@localhost utils]# ruby -v   ##查看当前ruby2.4.1 版本ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-linux][root@localhost utils]# gem install redis  #再次安装RedisFetching redis-4.1.3.gemSuccessfully installed redis-4.1.3Parsing documentation for redis-4.1.3Installing ri documentation for redis-4.1.3Done installing documentation for redis after 1 seconds1 gem installed[root@localhost utils]# 

4、在主服务器上添加两块网卡

[root@localhost utils]#  service network restart   ##重启网卡[root@localhost utils]#  systemctl stop firewalld.service   ##关闭防火墙[root@localhost utils]#  setenforce 0[root@localhost utils]# ifconfig ens33: flags=4163  mtu 1500        inet 192.168.52.150  netmask 255.255.255.0  broadcast 192.168.52.255        inet6 fe80::5134:22f5:842b:5201  prefixlen 64  scopeid 0x20        ether 00:0c:29:0d:f1:75  txqueuelen 1000  (Ethernet)        RX packets 91575  bytes 119014065 (113.5 MiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 28442  bytes 2443621 (2.3 MiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0ens36: flags=4163  mtu 1500        inet 192.168.52.153  netmask 255.255.255.0  broadcast 192.168.52.255        inet6 fe80::84f1:53d8:a97a:d450  prefixlen 64  scopeid 0x20        ether 00:0c:29:0d:f1:89  txqueuelen 1000  (Ethernet)        RX packets 128  bytes 18873 (18.4 KiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 42  bytes 6253 (6.1 KiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0ens37: flags=4163  mtu 1500        inet 192.168.52.154  netmask 255.255.255.0  broadcast 192.168.52.255        inet6 fe80::74f5:2344:c59b:4fdb  prefixlen 64  scopeid 0x20        ether 00:0c:29:0d:f1:7f  txqueuelen 1000  (Ethernet)        RX packets 107  bytes 16849 (16.4 KiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 29  bytes 4601 (4.4 KiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

5、在从服务器上也添加两块网卡

[root@slave utils]# service network restart   ##重启网卡[root@slave utils]# systemctl stop firewalld.service   ##关闭防火墙[root@slave utils]# setenforce 0[root@localhost utils]# ifconfig ens33: flags=4163  mtu 1500        inet 192.168.52.148  netmask 255.255.255.0  broadcast 192.168.52.255        inet6 fe80::c776:9d00:618:88f2  prefixlen 64  scopeid 0x20        ether 00:0c:29:37:e9:25  txqueuelen 1000  (Ethernet)        RX packets 65481  bytes 86357533 (82.3 MiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 21069  bytes 1892475 (1.8 MiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0ens36: flags=4163  mtu 1500        inet 192.168.52.155  netmask 255.255.255.0  broadcast 192.168.52.255        inet6 fe80::d3e5:cd6b:26f8:fd1f  prefixlen 64  scopeid 0x20        ether 00:0c:29:37:e9:39  txqueuelen 1000  (Ethernet)        RX packets 143  bytes 17342 (16.9 KiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 38  bytes 5940 (5.8 KiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0ens37: flags=4163  mtu 1500        inet 192.168.52.156  netmask 255.255.255.0  broadcast 192.168.52.255        inet6 fe80::222b:77ad:8da2:4ea6  prefixlen 64  scopeid 0x20        ether 00:0c:29:37:e9:2f  txqueuelen 1000  (Ethernet)        RX packets 114  bytes 14481 (14.1 KiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 30  bytes 4661 (4.5 KiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

6、在master服务器上创建集群

##6个实例分为三组，每组一主一从[root@localhost utils]# redis-cli --cluster create 192.168.52.150:6379 192.168.52.153:6379 192.168.52.154:6379 192.168.52.148:6379 192.168.52.155:6379 192.168.52.156:6379 --cluster-replicas 1##创建群集，每组一主一从>>> Performing hash slots allocation on 6 nodes...Master[0] -> Slots 0 - 5460Master[1] -> Slots 5461 - 10922Master[2] -> Slots 10923 - 16383Adding replica 192.168.52.155:6379 to 192.168.52.150:6379Adding replica 192.168.52.156:6379 to 192.168.52.153:6379Adding replica 192.168.52.148:6379 to 192.168.52.154:6379M: b9dfae79d92141a7bad172a344e0696f356a875f 192.168.52.150:6379   slots:[0-16383] (5461 slots) master    ##128，129，135为主M: b9dfae79d92141a7bad172a344e0696f356a875f 192.168.52.153:6379   slots:[0-16383] (5462 slots) masterM: b9dfae79d92141a7bad172a344e0696f356a875f 192.168.52.154:6379   slots:[0-16383] (5461 slots) masterS: ebc69ee01cf293b3af9930cac2dba03b4475336b 192.168.52.148:6379   replicates b9dfae79d92141a7bad172a344e0696f356a875f  ##136，137，138为副本S: ebc69ee01cf293b3af9930cac2dba03b4475336b 192.168.52.155:6379   replicates b9dfae79d92141a7bad172a344e0696f356a875fS: ebc69ee01cf293b3af9930cac2dba03b4475336b 192.168.52.156:6379   replicates b9dfae79d92141a7bad172a344e0696f356a875f...Can I set the above configuration? (type 'yes' to accept): yes  ##选择yes>>> Nodes configuration updated>>> Assign a different config epoch to each node>>> Sending CLUSTER MEET messages to join the clusterWaiting for the cluster to join>>> Performing Cluster Check (using node 192.168.52.150:6379)M: b9dfae79d92141a7bad172a344e0696f356a875f 192.168.52.150:6379   slots:[0-16383] (16384 slots) master   1 additional replica(s)S: ebc69ee01cf293b3af9930cac2dba03b4475336b 192.168.52.155:6379   slots: (0 slots) slave   replicates b9dfae79d92141a7bad172a344e0696f356a875f[OK] All nodes agree about slots configuration.>>> Check for open slots...>>> Check slots coverage...[OK] All 16384 slots covered.[root@localhost utils]#

7、验证群集读写原理

[root@localhost utils]# redis-cli -h 192.168.52.150 -p 6379   ##主服务器192.168.52.150:6379> set name zhangsan   ##创建键值对OK 192.168.52.150:6379> keys *1) "name"192.168.52.150:6379> get name"zhangsan"192.168.52.150:6379> exit[root@localhost utils]# redis-cli -h 192.168.52.148 -p 6379   ##从服务器192.168.52.148:6379> keys *    ##查看从上也有1) "name"192.168.52.148:6379> get name"zhangsan"192.168.52.148:6379> exit[root@localhost utils]#