redis集群介绍

1.官方叫cluster,redis3.0才直接的一个架构，如果数据量很大，单台机器已经无法满足存储，查询的瓶颈，所以我们需要多台机器构成一个大集群，用来解决存储空间，查询速度，负载高瓶颈问题，redis cluster是一个分布式的集群，支持横向扩展

redis集群搭建配置

1.redis cluster需要ruby2.2版本的支持，我们系统默认带的ruby是2.0的不能用，需要自己安装2.2的

[root@centos-02 ~]# yum list|grep ruby

ruby.x86_64                               2.0.0.648-33.el7_4           updates

2.安装开发工具包

[root@centos-02 ~]# yum groupinstall -y "development tools"

3.准备两台机器分别开启三个redis服务（端口），A机器上三个端口7000,7002,7004全部为主，B机器上三个端口7001,7003,7005全部为从，两个机器上都要编译安装redis，然后编辑并复制3个不同的redis.conf，分别设置不同的端口号，dir等参数，还需要增加cluster相关参数，然后分别启动6个redis服务。https://coding.net/u/aminglinux/p/yuanke_centos7/git/tree/master/21NOSQL

4.centos02我们作为A机器，centos03我们作为B机器

[root@centos-02 ~]# vim /etc/redis_7000.conf

[root@centos-02 ~]#

port 7000

bind 192.168.133.88

daemonize yes

pidfile /var/run/redis_7000.pid

dir /data/redis_data/7000

cluster-enabled yes

cluster-config-file nodes_7000.conf

cluster-node-timeout 10100

appendonly yes

5.创建redis_7002.conf并编辑配置文件

[root@centos-02 ~]# cp /etc/redis_7000.conf /etc/redis_7002.conf

port 7002

bind 192.168.133.88

daemonize yes

pidfile /var/run/redis_7002.pid

dir /data/redis_data/7002

cluster-enabled yes

cluster-config-file nodes_7002.conf （这个配置文件可以自动生成）

cluster-node-timeout 10100

appendonly yes

6.同理创建redis_7004.conf并编辑配置文件

[root@centos-02 ~]# cp /etc/redis_7000.conf /etc/redis_7004.conf

[root@centos-02 ~]# vim /etc/redis_7004.conf 

port 7004

bind 192.168.133.88

daemonize yes

pidfile /var/run/redis_7004.pid

dir /data/redis_data/7004

cluster-enabled yes

cluster-config-file nodes_7004.conf

cluster-node-timeout 10100

appendonly yes

~

:1,$s/7000/7004/g

7.B机器同样建立redis_7001,redis_7003,redis_7005

[root@centos-03 ~]# vim /etc/redis_7001.conf

[root@centos-03 ~]#

port 7001

bind 192.168.133.66

daemonize yes

pidfile /var/run/redis_7001.pid

dir /data/redis_data/7001

cluster-enabled yes

cluster-config-file nodes_7001.conf

cluster-node-timeout 10100

appendonly yes

[root@centos-03 ~]# cp /etc/redis_7001.conf /etc/redis_7003.conf

[root@centos-03 ~]# vim /etc/redis_7003.conf

[root@centos-03 ~]#

port 7003

bind 192.168.133.66

daemonize yes

pidfile /var/run/redis_7003.pid

dir /data/redis_data/7003

cluster-enabled yes

cluster-config-file nodes_7003.conf

cluster-node-timeout 10100

appendonly yes

[root@centos-03 ~]# cp /etc/redis_7001.conf /etc/redis_7005.conf

[root@centos-03 ~]# vim /etc/redis_7005.conf

port 7005

bind 192.168.133.66

daemonize yes

pidfile /var/run/redis_7005.pid

dir /data/redis_data/7005

cluster-enabled yes

cluster-config-file nodes_7005.conf

cluster-node-timeout 10100

appendonly yes

8.创建redis_data目录并创建

[root@centos-02 ~]# mkdir /data/redis_data

[root@centos-02 ~]# mkdir /data/redis_data/{7000,7002,7004} （同时创建三个目录）

[root@centos-02 ~]# ls /data/redis_data/700

7000/ 7002/ 7004/

9.同样我们在从服务器上也创建下7001,7003,7005

[root@centos-03 ~]# mkdir /data/redis_data

[root@centos-03 ~]# mkdir /data/redis_data/{7001,7003,7005}

[root@centos-03 ~]#

10.启动主上的redis

[root@centos-02 ~]# redis-server /etc/redis_7000.conf

24824:C 31 Mar 23:13:06.217 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo

24824:C 31 Mar 23:13:06.221 # Redis version=4.0.8, bits=64, commit=00000000, modified=0, pid=24824, just started

24824:C 31 Mar 23:13:06.222 # Configuration loaded

[root@centos-02 ~]# redis-server /etc/redis_7002.conf

24829:C 31 Mar 23:13:20.722 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo

24829:C 31 Mar 23:13:20.722 # Redis version=4.0.8, bits=64, commit=00000000, modified=0, pid=24829, just started

24829:C 31 Mar 23:13:20.723 # Configuration loaded

[root@centos-02 ~]# redis-server /etc/redis_7004.conf

24834:C 31 Mar 23:13:25.233 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo

24834:C 31 Mar 23:13:25.239 # Redis version=4.0.8, bits=64, commit=00000000, modified=0, pid=24834, just started

24834:C 31 Mar 23:13:25.240 # Configuration loaded

[root@centos-02 ~]# ps aux|grep redis

root      12180  1.0  0.2 147312  2472 ?        Ssl  17:01   3:47 redis-server 127.0.0.1:6379

root      12704  0.9  0.2 147312  2456 ?        Ssl  17:51   3:05 redis-server 127.0.0.1:6380

root      24825  2.5  0.2 145268  2572 ?        Ssl  23:13   0:00 redis-server 192.168.133.88:7000 [cluster]

root      24830  3.7  0.2 145268  2572 ?        Ssl  23:13   0:00 redis-server 192.168.133.88:7002 [cluster]

root      24835  7.1  0.2 145268  2576 ?        Ssl  23:13   0:00 redis-server 192.168.133.88:7004 [cluster]

root      24840  6.0  0.0 112680   948 pts/2    R+   23:13   0:00 grep --color=auto redi

[root@centos-02 ~]#

11.从上安装redis，将主上的redis安装文件拷贝到从上

[root@centos-02 src]# scp -r redis-4.0.8 192.168.133.66:/usr/local/src/

12.我们把编译（在主上已经编译过了，编译过程其实就是生成这些二进制的文件，我们直接放到对应的位置上就可以了，也就是执行 make install）过的源码包拷贝过来直接执行make install

[root@centos-03 ~]# cd /usr/local/src/redis-4.0.8/

[root@centos-03 redis-4.0.8]# make install

cd src && make install

make[1]: 进入目录“/usr/local/src/redis-4.0.8/src”

Hint: It's a good idea to run 'make test' ;)

    INSTALL install

    INSTALL install

    INSTALL install

    INSTALL install

    INSTALL install

make[1]: 离开目录“/usr/local/src/redis-4.0.8/src”

[root@centos-03 redis-4.0.8]#

13.启动从上的redis

[root@centos-03 redis-4.0.8]# redis-server /etc/redis_7001.conf

2363:C 31 Mar 23:26:10.536 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo

2363:C 31 Mar 23:26:10.537 # Redis version=4.0.8, bits=64, commit=00000000, modified=0, pid=2363, just started

2363:C 31 Mar 23:26:10.537 # Configuration loaded

[root@centos-03 redis-4.0.8]# redis-server /etc/redis_7003.conf

2368:C 31 Mar 23:26:25.299 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo

2368:C 31 Mar 23:26:25.300 # Redis version=4.0.8, bits=64, commit=00000000, modified=0, pid=2368, just started

2368:C 31 Mar 23:26:25.300 # Configuration loaded

[root@centos-03 redis-4.0.8]# redis-server /etc/redis_7005.conf

2373:C 31 Mar 23:26:29.081 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo

2373:C 31 Mar 23:26:29.081 # Redis version=4.0.8, bits=64, commit=00000000, modified=0, pid=2373, just started

2373:C 31 Mar 23:26:29.081 # Configuration loaded

[root@centos-03 redis-4.0.8]# ps aux|grep redis

root       2364  1.3  0.7 145256  7524 ?        Ssl  23:26   0:00 redis-server 192.168.133.66:7001 [cluster]

root       2369  1.3  0.7 145256  7528 ?        Ssl  23:26   0:00 redis-server 192.168.133.66:7003 [cluster]

root       2374  1.8  0.7 145256  7524 ?        Ssl  23:26   0:00 redis-server 192.168.133.66:7005 [cluster]

root       2379  0.0  0.0 112664   932 pts/0    R+   23:27   0:00 grep --color=auto redi

[root@centos-03 redis-4.0.8]#

14.查看下监听的端口

[root@centos-03 redis-4.0.8]# netstat -lntp

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name

tcp        0      0 192.168.133.66:17003    0.0.0.0:*               LISTEN      2369/redis-server 1

tcp        0      0 192.168.133.66:17005    0.0.0.0:*               LISTEN      2374/redis-server 1

tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      927/sshd

tcp        0      0 192.168.133.66:7001     0.0.0.0:*               LISTEN      2364/redis-server 1

tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1581/master

tcp        0      0 192.168.133.66:7003     0.0.0.0:*               LISTEN      2369/redis-server 1

tcp        0      0 192.168.133.66:7005     0.0.0.0:*               LISTEN      2374/redis-server 1

tcp        0      0 0.0.0.0:10050           0.0.0.0:*               LISTEN      905/zabbix_agentd

tcp        0      0 192.168.133.66:17001    0.0.0.0:*               LISTEN      2364/redis-server 1

tcp6       0      0 :::3306                 :::*                    LISTEN      1330/mysqld

tcp6       0      0 :::22                   :::*                    LISTEN      927/sshd

tcp6       0      0 ::1:25                  :::*                    LISTEN      1581/master

tcp6       0      0 :::10050                :::*                    LISTEN      905/zabbix_agentd

[root@centos-03 redis-4.0.8]#

15.记得关闭iptables和selinux

[root@centos-02 src]# iptables -nvL （查看iptables状态）

[root@centos-02 src]# getenforce  （查看selinux状态）

Disabled

[root@centos-02 src]#

1.为了安装更高版本的ruby我们需要一下操作，yum是不带rpm包的，只能下载源码包，要么编译安装，要么把源码包搞成rpm包，现在我们把源码包搞成rpm包

[root@centos-02 src]# yum -y install gdbm-devel libdb4-devel libffi-devel libyaml libyaml-devel ncurses-devel openssl-devel readline-devel tcl-deve

2.创建将源码包搞成rpm包的几个目录

[root@centos-02 src]# cd /root/

[root@centos-02 ~]# mkdir -p rpmbuild/{BUILD,BUILDROOT,RPMS,SOURCES,SPECS,SRPMS}

[root@centos-02 ~]#

3.下载ruby的源码包

wget http://cache.ruby-lang.org/pub/ruby/2.2/ruby-2.2.3.tar.gz -P rpmbuild/SOURCES

4.下载spec的文件，没有它我们就没办法将它做成（rpmbuild）rpm包了

wget https://raw.githubusercontent.com/tjinjin/automate-ruby-rpm/master/ruby22x.spec -P rpmbuild/SPECS

5.编译并建rpm包

rpmbuild -bb rpmbuild/SPECS/ruby22x.spec

6.用rpm -ivh命令安装rpm包，如果想安装包的过程中将依赖包也装上用yum命令

[root@centos-02 ~]# rpm -ivh rpmbuild/RPMS/x86_64/ruby-2.2.3-1.el7.centos.x86_64.rpm

7.安装ruby和redis相关联的东西gem文件

[root@centos-02 ~]# ruby -v

ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-linux]

[root@centos-02 ~]# gem install redis

Fetching: redis-4.0.1.gem (100%)

Successfully installed redis-4.0.1

Parsing documentation for redis-4.0.1

Installing ri documentation for redis-4.0.1

Done installing documentation for redis after 4 seconds

1 gem installed

[root@centos-02 ~]#

1.为了能直接运行redis-trib.rb命令我们将redis中的这个文件拷贝到/usr/bin/下

[root@centos-02 ~]# cp /usr/local/src/redis-4.0.8/src/redis-trib.rb /usr/bin/

[root@centos-02 ~]#

2.创建主存，我x成功了

[root@centos-02 ~]# redis-trib.rb create --replicas 1 192.168.133.88:7000 192.168.133.88:7002 192.168.133.88:7004 192.168.133.66:7001 192.168.133.66:7003 192.168.133.66:7005

>>> Creating cluster

>>> Performing hash slots allocation on 6 nodes...

Using 3 masters:

192.168.133.88:7000

192.168.133.66:7001

192.168.133.88:7002

Adding replica 192.168.133.66:7005 to 192.168.133.88:7000

Adding replica 192.168.133.88:7004 to 192.168.133.66:7001

Adding replica 192.168.133.66:7003 to 192.168.133.88:7002

M: 0af414244dc3a19031fa9e46e7a2fc0182427299 192.168.133.88:7000

   slots:0-5460 (5461 slots) master

M: ce0614a31fb607fb0d77132ae483499b91e23f12 192.168.133.88:7002

   slots:10923-16383 (5461 slots) master

S: 6d49712ec41f561a1e9e9b0d10821754745d814e 192.168.133.88:7004

   replicates 286c87c43e3f48c161c46f051e54fafaf288977e

M: 286c87c43e3f48c161c46f051e54fafaf288977e 192.168.133.66:7001

   slots:5461-10922 (5462 slots) master

S: 29164b1a5a53031f5f1bb73f39200cbb1e933adb 192.168.133.66:7003

   replicates ce0614a31fb607fb0d77132ae483499b91e23f12

S: 6d09687b05b8f07cab64803049884bf7384b4de9 192.168.133.66:7005

   replicates 0af414244dc3a19031fa9e46e7a2fc0182427299

Can I set the above configuration? (type 'yes' to accept): yes

>>> Nodes configuration updated

>>> Assign a different config epoch to each node

>>> Sending CLUSTER MEET messages to join the cluster

Waiting for the cluster to join........

>>> Performing Cluster Check (using node 192.168.133.88:7000)

M: 0af414244dc3a19031fa9e46e7a2fc0182427299 192.168.133.88:7000

   slots:0-5460 (5461 slots) master

   1 additional replica(s)

M: 286c87c43e3f48c161c46f051e54fafaf288977e 192.168.133.66:7001

   slots:5461-10922 (5462 slots) master

   1 additional replica(s)

S: 29164b1a5a53031f5f1bb73f39200cbb1e933adb 192.168.133.66:7003

   slots: (0 slots) slave

   replicates ce0614a31fb607fb0d77132ae483499b91e23f12

S: 6d49712ec41f561a1e9e9b0d10821754745d814e 192.168.133.88:7004

   slots: (0 slots) slave

   replicates 286c87c43e3f48c161c46f051e54fafaf288977e

M: ce0614a31fb607fb0d77132ae483499b91e23f12 192.168.133.88:7002

   slots:10923-16383 (5461 slots) master

   1 additional replica(s)

S: 6d09687b05b8f07cab64803049884bf7384b4de9 192.168.133.66:7005

   slots: (0 slots) slave

   replicates 0af414244dc3a19031fa9e46e7a2fc0182427299

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

redis集群操作　　

1.因为我们使用的集群，所以我们可以链接任意的端口（-c表示我们用集群的方式连）

[root@centos-02 ~]# redis-cli -c -h 192.168.133.88 -p 7000

192.168.133.88:7000>

2.创建一个key，我们发现它会将这个key重定向到7001端口上

192.168.133.88:7000> set key1 123

-> Redirected to slot [9189] located at 192.168.133.66:7001

OK

192.168.133.66:7001>

3.再创建一个key，它有到了7000端口上

192.168.133.66:7001> set key2 abc

-> Redirected to slot [4998] located at 192.168.133.88:7000

OK

192.168.133.88:7000>

4.这个没有提示，说明在本机创建了

192.168.133.88:7000> set key3 333

OK

192.168.133.88:7000>

5.又到了7002端口

192.168.133.88:7000> set key4 444

-> Redirected to slot [13120] located at 192.168.133.88:7002

OK

192.168.133.88:7002>

6.获取的方法是一样的

192.168.133.88:7002> get key3

-> Redirected to slot [935] located at 192.168.133.88:7000

"333"

192.168.133.88:7000> get key4

-> Redirected to slot [13120] located at 192.168.133.88:7002

"444"

192.168.133.88:7002>

7.查看集群状态

[root@centos-02 ~]# redis-trib.rb check 192.168.133.88:7000

8.列出节点

[root@centos-02 ~]# redis-cli -c -h 192.168.133.88 -p 7000

192.168.133.88:7000> CLUSTER NODES

286c87c43e3f48c161c46f051e54fafaf288977e 192.168.133.66:7001@17001 master - 0 1522515979900 4 connected 5461-10922

0af414244dc3a19031fa9e46e7a2fc0182427299 192.168.133.88:7000@17000 myself,master - 0 1522515979000 1 connected 0-5460

29164b1a5a53031f5f1bb73f39200cbb1e933adb 192.168.133.66:7003@17003 slave ce0614a31fb607fb0d77132ae483499b91e23f12 0 1522515978000 5 connected

6d49712ec41f561a1e9e9b0d10821754745d814e 192.168.133.88:7004@17004 slave 286c87c43e3f48c161c46f051e54fafaf288977e 0 1522515978000 4 connected

ce0614a31fb607fb0d77132ae483499b91e23f12 192.168.133.88:7002@17002 master - 0 1522515980000 2 connected 10923-16383

6d09687b05b8f07cab64803049884bf7384b4de9 192.168.133.66:7005@17005 slave 0af414244dc3a19031fa9e46e7a2fc0182427299 0 1522515980919 6 connected

192.168.133.88:7000>

9.查看集群信息

192.168.133.88:7000> CLUSTER INFO

cluster_state:ok

cluster_slots_assigned:16384

cluster_slots_ok:16384

cluster_slots_pfail:0

cluster_slots_fail:0

cluster_known_nodes:6

cluster_size:3

cluster_current_epoch:6

cluster_my_epoch:1

cluster_stats_messages_ping_sent:1163

cluster_stats_messages_pong_sent:1221

cluster_stats_messages_sent:2384

cluster_stats_messages_ping_received:1216

cluster_stats_messages_pong_received:1160

cluster_stats_messages_meet_received:5

cluster_stats_messages_received:2381

192.168.133.88:7000>

10.添加新节点会是主还是从呢？答案是主

[root@centos-03 etc]# cd /etc/

[root@centos-03 etc]# cp redis_7001.conf redis_7007.conf

[root@centos-03 etc]# vim redis_7007.conf

[root@centos-03 etc]#

port 7007

bind 192.168.133.66

daemonize yes

pidfile /var/run/redis_7007.pid

dir /data/redis_data/7007

cluster-enabled yes

cluster-config-file nodes_7007.conf

cluster-node-timeout 10100

appendonly yes

~

~

~

~

~

~

~

~

:1,$s/7001/7007/g

11.创建dir目录并启动7007端口的redis

[root@centos-03 etc]# mkdir /data/redis_data/7007

[root@centos-03 etc]# redis-server /etc/redis_7007.conf

4182:C 01 Apr 01:21:23.417 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo

4182:C 01 Apr 01:21:23.418 # Redis version=4.0.8, bits=64, commit=00000000, modified=0, pid=4182, just started

4182:C 01 Apr 01:21:23.418 # Configuration loaded

[root@centos-03 etc]#

12.看看7007端口的redis是否加入

[root@centos-03 etc]# ps aux|grep redis

root       2364  1.0  0.9 147304  9784 ?        Ssl  3月31   1:13 redis-server 192.168.133.66:7001 [cluster]

root       2369  1.0  0.9 147304  9812 ?        Ssl  3月31   1:13 redis-server 192.168.133.66:7003 [cluster]

root       2374  1.0  0.9 147304  9808 ?        Ssl  3月31   1:13 redis-server 192.168.133.66:7005 [cluster]

root       4183  1.0  0.7 145256  7528 ?        Ssl  01:21   0:00 redis-server 192.168.133.66: [cluster]

root       4204  0.0  0.0 112668   928 pts/0    S+   01:22   0:00 grep --color=auto redi

[root@centos-03 etc]#

13.主上执行添加节点命令

192.168.133.88:7000> CLUSTER MEET 192.168.133.66 7007

OK

192.168.133.88:7000>

14.用cluster nodes查看结果，7007为主

192.168.133.88:7000> CLUSTER NODES

286c87c43e3f48c161c46f051e54fafaf288977e 192.168.133.66:7001@17001 master - 0 1522517161215 4 connected 5461-10922

0af414244dc3a19031fa9e46e7a2fc0182427299 192.168.133.88:7000@17000 myself,master - 0 1522517159000 1 connected 0-5460

29164b1a5a53031f5f1bb73f39200cbb1e933adb 192.168.133.66:7003@17003 slave ce0614a31fb607fb0d77132ae483499b91e23f12 0 1522517162234 5 connected

eada670e3fa1dac7f766571b91e9b68cb10d4659 192.168.133.66:7007@17007 master - 0 1522517160000 0 connected

6d49712ec41f561a1e9e9b0d10821754745d814e 192.168.133.88:7004@17004 slave 286c87c43e3f48c161c46f051e54fafaf288977e 0 1522517162132 4 connected

ce0614a31fb607fb0d77132ae483499b91e23f12 192.168.133.88:7002@17002 master - 0 1522517159000 2 connected 10923-16383

6d09687b05b8f07cab64803049884bf7384b4de9 192.168.133.66:7005@17005 slave 0af414244dc3a19031fa9e46e7a2fc0182427299 0 1522517161000 6 connected

192.168.133.88:7000>

15.在主上再弄一个7006看看是主还是从

[root@centos-02 ~]# cd /etc/

[root@centos-02 etc]# cp redis_7000.conf redis_7006.conf

[root@centos-02 etc]# vim redis_7006.conf

[root@centos-02 etc]#

port 7006

bind 192.168.133.88

daemonize yes

pidfile /var/run/redis_7006.pid

dir /data/redis_data/7006

cluster-enabled yes

cluster-config-file nodes_7006.conf

cluster-node-timeout 10100

appendonly yes

16.创建dir目录并启动7006

[root@centos-02 etc]# mkdir /data/redis_data/7006

[root@centos-02 etc]# redis-server /etc/redis_7006.conf

39950:C 01 Apr 01:31:47.131 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo

39950:C 01 Apr 01:31:47.135 # Redis version=4.0.8, bits=64, commit=00000000, modified=0, pid=39950, just started

39950:C 01 Apr 01:31:47.135 # Configuration loaded

[root@centos-02 etc]#

17.将7006加入集群并查看节点信息，7006也是主，发现只要添加节点就是master，这样好像不太合理。

[root@centos-02 etc]# redis-cli -c -h 192.168.133.88 -p 7000

192.168.133.88:7000> CLUSTER MEET 192.168.133.88 7006

OK

192.168.133.88:7000> CLUSTER NODES

286c87c43e3f48c161c46f051e54fafaf288977e 192.168.133.66:7001@17001 master - 0 1522517604000 4 connected 5461-10922

0af414244dc3a19031fa9e46e7a2fc0182427299 192.168.133.88:7000@17000 myself,master - 0 1522517602000 1 connected 0-5460

c932ce9d4f8a4719734a5213e971c30bd8e3c3ed 192.168.133.88:7006@17006 master - 0 1522517603117 7 connected

29164b1a5a53031f5f1bb73f39200cbb1e933adb 192.168.133.66:7003@17003 slave ce0614a31fb607fb0d77132ae483499b91e23f12 0 1522517602097 5 connected

eada670e3fa1dac7f766571b91e9b68cb10d4659 192.168.133.66:7007@17007 master - 0 1522517603117 0 connected

6d49712ec41f561a1e9e9b0d10821754745d814e 192.168.133.88:7004@17004 slave 286c87c43e3f48c161c46f051e54fafaf288977e 0 1522517605137 4 connected

ce0614a31fb607fb0d77132ae483499b91e23f12 192.168.133.88:7002@17002 master - 0 1522517603000 2 connected 10923-16383

6d09687b05b8f07cab64803049884bf7384b4de9 192.168.133.66:7005@17005 slave 0af414244dc3a19031fa9e46e7a2fc0182427299 0 1522517604128 6 connected

192.168.133.88:7000>

18.将当前节点设置为指定节点的从，我们这里将刚加入的7006节点设置为7007的从

[root@centos-02 etc]# redis-cli -c -h 192.168.133.88 -p 7006

192.168.133.88:7006> CLUSTER REPLICATE eada670e3fa1dac7f766571b91e9b68cb10d4659 （对应7007节点的id）

OK

192.168.133.88:7006>

19.发现7006 为7007的从了

192.168.133.88:7006> CLUSTER NODES

c932ce9d4f8a4719734a5213e971c30bd8e3c3ed 192.168.133.88:7006@17006 myself,slave eada670e3fa1dac7f766571b91e9b68cb10d4659 0 1522518141000 7 connected

6d09687b05b8f07cab64803049884bf7384b4de9 192.168.133.66:7005@17005 slave 0af414244dc3a19031fa9e46e7a2fc0182427299 0 1522518141000 1 connected

0af414244dc3a19031fa9e46e7a2fc0182427299 192.168.133.88:7000@17000 master - 0 1522518143288 1 connected 0-5460

286c87c43e3f48c161c46f051e54fafaf288977e 192.168.133.66:7001@17001 master - 0 1522518142245 4 connected 5461-10922

ce0614a31fb607fb0d77132ae483499b91e23f12 192.168.133.88:7002@17002 master - 0 1522518141232 2 connected 10923-16383

6d49712ec41f561a1e9e9b0d10821754745d814e 192.168.133.88:7004@17004 slave 286c87c43e3f48c161c46f051e54fafaf288977e 0 1522518142145 4 connected

eada670e3fa1dac7f766571b91e9b68cb10d4659 192.168.133.66:7007@17007 master - 0 1522518142000 0 connected

29164b1a5a53031f5f1bb73f39200cbb1e933adb 192.168.133.66:7003@17003 slave ce0614a31fb607fb0d77132ae483499b91e23f12 0 1522518139000 2 connected

192.168.133.88:7006>

20.移除节点，我们移除7007发现不能移除，这个命令只能移除从节点，如果想移除主节点需要将主节点先设置为某个节点的从节点，然后再移除。

192.168.133.88:7006> CLUSTER FORGET eada670e3fa1dac7f766571b91e9b68cb10d4659

(error) ERR Can't forget my master!

192.168.133.88:7006>

21,.进到7000将7006移除，发现没有7006了

[root@centos-02 etc]# redis-cli -c -h 192.168.133.88 -p 7000

192.168.133.88:7000> CLUSTER FORGET c932ce9d4f8a4719734a5213e971c30bd8e3c3ed

OK

192.168.133.88:7000>

192.168.133.88:7000> CLUSTER NODES

286c87c43e3f48c161c46f051e54fafaf288977e 192.168.133.66:7001@17001 master - 0 1522519238000 4 connected 5461-10922

0af414244dc3a19031fa9e46e7a2fc0182427299 192.168.133.88:7000@17000 myself,master - 0 1522519237000 1 connected 0-5460

29164b1a5a53031f5f1bb73f39200cbb1e933adb 192.168.133.66:7003@17003 slave ce0614a31fb607fb0d77132ae483499b91e23f12 0 1522519239293 5 connected

eada670e3fa1dac7f766571b91e9b68cb10d4659 192.168.133.66:7007@17007 master - 0 1522519238000 0 connected

6d49712ec41f561a1e9e9b0d10821754745d814e 192.168.133.88:7004@17004 slave 286c87c43e3f48c161c46f051e54fafaf288977e 0 1522519239188 4 connected

ce0614a31fb607fb0d77132ae483499b91e23f12 192.168.133.88:7002@17002 master - 0 1522519238237 2 connected 10923-16383

6d09687b05b8f07cab64803049884bf7384b4de9 192.168.133.66:7005@17005 slave 0af414244dc3a19031fa9e46e7a2fc0182427299 0 1522519238000 6 connected

192.168.133.88:7000> 　　

22.将当前的操作保存到配置文件中，每一个节点上都会有

192.168.133.88:7000> CLUSTER SAVECONFIG

OK

192.168.133.88:7000>

23.保存成功　　

[root@centos-03 etc]# cat /data/redis_data/7001/nodes_7001.conf

c932ce9d4f8a4719734a5213e971c30bd8e3c3ed 192.168.133.88:7006@17006 slave eada670e3fa1dac7f766571b91e9b68cb10d4659 0 1522518059000 7 connected

6d09687b05b8f07cab64803049884bf7384b4de9 192.168.133.66:7005@17005 slave 0af414244dc3a19031fa9e46e7a2fc0182427299 0 1522518060000 6 connected

6d49712ec41f561a1e9e9b0d10821754745d814e 192.168.133.88:7004@17004 slave 286c87c43e3f48c161c46f051e54fafaf288977e 0 1522518060717 4 connected

eada670e3fa1dac7f766571b91e9b68cb10d4659 192.168.133.66:7007@17007 master - 0 1522518059707 0 connected

29164b1a5a53031f5f1bb73f39200cbb1e933adb 192.168.133.66:7003@17003 slave ce0614a31fb607fb0d77132ae483499b91e23f12 0 1522518059000 5 connected

ce0614a31fb607fb0d77132ae483499b91e23f12 192.168.133.88:7002@17002 master - 0 1522518059000 2 connected 10923-16383

286c87c43e3f48c161c46f051e54fafaf288977e 192.168.133.66:7001@17001 myself,master - 0 1522518058000 4 connected 5461-10922

0af414244dc3a19031fa9e46e7a2fc0182427299 192.168.133.88:7000@17000 master - 0 1522518057000 1 connected 0-5460

vars currentEpoch 7 lastVoteEpoch 0

[root@centos-03 etc]#

　　

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