redis集群搭建_动力节点Java学院整理
现在项目上用redis的话，很少说不用集群的情况，毕竟如果生产上只有一台redis会有极大的风险，比如机器挂掉，或内存爆掉，就比如我们生产环境曾今也遭受到这类情况，致使redis内存不够挂掉的情况，固然这些都是我们及其不能容忍的，第一个一定要要做到高可靠，其次才是高性能，好了，下面我来逐一搭建一下。
一：Redis集群搭建
1. 下载
首先去官网下载较新的3.2.0版本，下载方式或者非常简单的，比如官网介绍的这样。
$ wget http://download.redis.io/releases/redis⑶.2.0.tar.gz $ tar xzf redis⑶.2.0.tar.gz $ cd redis⑶.2.0 $ make
2. redis配置
由于我们要做集群，而且还要redis自带的redis-trib.rb 能正常运行，我们需要在集群中开启三台master，三台slave，所以这里我需要建立6个文件夹，而且文件夹的名称就使用端口地址的名字，比如：6389. 6380….6384。
3. config配置。
现在directory的散布情况大致如上图，接下来要做的事情就是配置redis.conf了，在这里需要配置四个选项。。。
<1> port 端口地址，比如6380文件夹下面的port就是6380，
# Accept connections on the specified port, default is 6379 (IANA #815344).
# If port 0 is specified Redis will not listen on a TCP socket.
port 6379
<2> cluster-enabled 和 cluster-config-file
这个顾名思义，首先需要开启redis的cluster模式，然后配置一个cluster-config-file文件，这个文件用于寄存redis的实时信息，redis会动态追加和修改这个conf下面的内容信息，不过要记住，这个nodes⑹379.conf 可以根据 端口文件夹顺次配置，比如6380文件夹可以改成nodes⑹380.conf这样。。。
# Normal Redis instances can’t be part of a Redis Cluster; only nodes that are
# started as cluster nodes can. In order to start a Redis instance as a
# cluster node enable the cluster support uncommenting the following:
#
cluster-enabled yes
# Every cluster node has a cluster configuration file. This file is not
# intended to be edited by hand. It is created and updated by Redis nodes.
# Every Redis Cluster node requires a different cluster configuration file.
# Make sure that instances running in the same system do not have
# overlapping cluster configuration file names.
#
cluster-config-file nodes⑹379.conf
<3> directory
为了方便管理，我这里配置的root目录取决于在哪一个文件夹，比如6380下面我的dir就是: dir ./6380/
# Note that you must specify a directory here, not a file name.
dir ./6379/
<4> protected-mode
这个是redis 3.2 才追加的一个功能，从功能注释中，我们就能够发现，这个默许就是不让外界可以访问redis，所以这里我们就改成no，可以远程访问。
# By default protected mode is enabled. You should disable it only if
# you are sure you want clients from other hosts to connect to Redis
# even if no authentication is configured, nor a specific set of interfaces
# are explicitly listed using the “bind” directive.
protected-mode no
ok，到现在为止，我们的config就修改终了了，其他端口的文件夹也能够顺次配置之~
二：开启redis
到现在为止，各个端口文件夹都配置成功了，接下来准备开启了。
接下来我们可以看一下，在6379下面是不是是有生成node⑹379.conf文件，比以下面：
三：配置redis-trib.rb
由于redis-trib.rb是ruby写的，而我们的电脑肯定是没有ruby和一些配置依赖项，不过没关系，有强大的yum安装，一切都不是问题。
1. 履行replicas命令
[jack@localhost ~]$ cluster/redis-trib.rb create –replicas 1 192.168.161.133:6379 192.168.161.133:6380 192.168.161.133:6381 192.168.161.133:6382 192.168.161.133:6383 192.168.161.133:6384
/usr/bin/env: ruby: No such file or directory
[jack@localhost ~]$
可以看到ruby是没有安装的，所以下一步我们要安装ruby了。。。
2. 安装ruby 【一定要是管理员权限哦】
[jack@localhost ~]$ sudo
usage: sudo [-D level] -h | -K | -k | -V
usage: sudo -v [-AknS] [-D level] [-g groupname|#gid] [-p prompt] [-u user
name|#uid]
usage: sudo -l[l] [-AknS] [-D level] [-g groupname|#gid] [-p prompt] [-U user
name] [-u user name|#uid] [-g groupname|#gid] [command]
usage: sudo [-AbEHknPS] [-r role] [-t type] [-C fd] [-D level] [-g
groupname|#gid] [-p prompt] [-u user name|#uid] [-g groupname|#gid]
[VAR=value] [-i|-s] [<command>]
usage: sudo -e [-AknS] [-r role] [-t type] [-C fd] [-D level] [-g
groupname|#gid] [-p prompt] [-u user name|#uid] file …
[jack@localhost ~]$ su
Password:
jacsu: incorrect password
[jack@localhost ~]$ yum install ruby
Loaded plugins: fastestmirror, refresh-packagekit, security
You need to be root to perform this command.
[jack@localhost ~]$ jack
bash: jack: command not found
[jack@localhost ~]$ su
Password:
[root@localhost jack]# yum install ruby
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: mirror.bit.edu.cn
* extras: mirror.bit.edu.cn
* updates: mirror.bit.edu.cn
Setting up Install Process
Resolving Dependencies
–> Running transaction check
—> Package ruby.x86_64 0:1.8.7.374⑷.el6_6 will be installed
–> Processing Dependency: ruby-libs = 1.8.7.374⑷.el6_6 for package: ruby⑴.8.7.374⑷.el6_6.x86_64
–> Processing Dependency: libruby.so.1.8()(64bit) for package: ruby⑴.8.7.374⑷.el6_6.x86_64
–> Running transaction check
—> Package ruby-libs.x86_64 0:1.8.7.374⑷.el6_6 will be installed
–> Processing Dependency: libreadline.so.5()(64bit) for package: ruby-libs⑴.8.7.374⑷.el6_6.x86_64
–> Running transaction check
—> Package compat-readline5.x86_64 0:5.2⑴7.1.el6 will be installed
–> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
ruby x86_64 1.8.7.374⑷.el6_6 base 538 k
Installing for dependencies:
compat-readline5 x86_64 5.2⑴7.1.el6 base 130 k
ruby-libs x86_64 1.8.7.374⑷.el6_6 base 1.7 M
Transaction Summary
================================================================================
Install 3 Package(s)
Total download size: 2.3 M
Installed size: 7.8 M
Is this ok [y/N]: y
Downloading Packages:
(1/3): compat-readline5⑸.2⑴7.1.el6.x86_64.rpm | 130 kB 00:00
(2/3): ruby⑴.8.7.374⑷.el6_6.x86_64.rpm | 538 kB 00:00
(3/3): ruby-libs⑴.8.7.374⑷.el6_6.x86_64.rpm | 1.7 MB 00:02
——————————————————————————–
Total 747 kB/s | 2.3 MB 00:03
warning: rpmts_HdrFromFdno: Header V3 RSA/SHA256 Signature, key ID c105b9de: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS⑹
Importing GPG key 0xC105B9DE:
Userid : CentOS⑹ Key (CentOS 6 Official Signing Key) <centos⑹-key@centos.org>
Package: centos-release⑹⑸.el6.centos.11.1.x86_64 (@anaconda-CentOS⑵01311272149.x86_64/6.5)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS⑹
Is this ok [y/N]: y
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : compat-readline5⑸.2⑴7.1.el6.x86_64 1/3
Installing : ruby-libs⑴.8.7.374⑷.el6_6.x86_64 2/3
Installing : ruby⑴.8.7.374⑷.el6_6.x86_64 3/3
Verifying : compat-readline5⑸.2⑴7.1.el6.x86_64 1/3
Verifying : ruby-libs⑴.8.7.374⑷.el6_6.x86_64 2/3
Verifying : ruby⑴.8.7.374⑷.el6_6.x86_64 3/3
Installed:
ruby.x86_64 0:1.8.7.374⑷.el6_6
Dependency Installed:
compat-readline5.x86_64 0:5.2⑴7.1.el6 ruby-libs.x86_64 0:1.8.7.374⑷.el6_6
Complete!
[root@localhost jack]#
3. 安装rubygems
接着我们再次运行 replicas命令，看看会怎样样。。。
[root@localhost jack]# cluster/redis-trib.rb create --replicas 1 192.168.161.133:6379 192.168.161.133:6380 192.168.161.133:6381 192.168.161.133:6382 192.168.161.133:6383 192.168.161.133:6384 cluster/redis-trib.rb:24:in `require': no such file to load -- rubygems (LoadError) from cluster/redis-trib.rb:24 [root@localhost jack]#
结果苦逼了，或者报错，看提示貌似是少了一个rubygems，这次我们或者通过yum安装。
[root@localhost jack]# yum install -y rubygems
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: mirror.bit.edu.cn
* extras: mirror.bit.edu.cn
* updates: mirror.bit.edu.cn
Setting up Install Process
Resolving Dependencies
–> Running transaction check
—> Package rubygems.noarch 0:1.3.7⑸.el6 will be installed
–> Processing Dependency: ruby-rdoc for package: rubygems⑴.3.7⑸.el6.noarch
–> Running transaction check
—> Package ruby-rdoc.x86_64 0:1.8.7.374⑷.el6_6 will be installed
–> Processing Dependency: ruby-irb = 1.8.7.374⑷.el6_6 for package: ruby-rdoc⑴.8.7.374⑷.el6_6.x86_64
–> Running transaction check
—> Package ruby-irb.x86_64 0:1.8.7.374⑷.el6_6 will be installed
–> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
rubygems noarch 1.3.7⑸.el6 base 207 k
Installing for dependencies:
ruby-irb x86_64 1.8.7.374⑷.el6_6 base 317 k
ruby-rdoc x86_64 1.8.7.374⑷.el6_6 base 381 k
Transaction Summary
================================================================================
Install 3 Package(s)
Total download size: 905 k
Installed size: 3.0 M
Downloading Packages:
(1/3): ruby-irb⑴.8.7.374⑷.el6_6.x86_64.rpm | 317 kB 00:00
(2/3): ruby-rdoc⑴.8.7.374⑷.el6_6.x86_64.rpm | 381 kB 00:00
(3/3): rubygems⑴.3.7⑸.el6.noarch.rpm | 207 kB 00:00
——————————————————————————–
Total 625 kB/s | 905 kB 00:01
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : ruby-irb⑴.8.7.374⑷.el6_6.x86_64 1/3
Installing : ruby-rdoc⑴.8.7.374⑷.el6_6.x86_64 2/3
Installing : rubygems⑴.3.7⑸.el6.noarch 3/3
Verifying : ruby-rdoc⑴.8.7.374⑷.el6_6.x86_64 1/3
Verifying : ruby-irb⑴.8.7.374⑷.el6_6.x86_64 2/3
Verifying : rubygems⑴.3.7⑸.el6.noarch 3/3
Installed:
rubygems.noarch 0:1.3.7⑸.el6
Dependency Installed:
ruby-irb.x86_64 0:1.8.7.374⑷.el6_6 ruby-rdoc.x86_64 0:1.8.7.374⑷.el6_6
Complete!
[root@localhost jack]#
4. 安装redis驱动
或者继续不死心，我们继续运行replicas命令命令。
[root@localhost jack]# cluster/redis-trib.rb create --replicas 1 192.168.161.133:6379 192.168.161.133:6380 192.168.161.133:6381 192.168.161.133:6382 192.168.161.133:6383 192.168.161.133:6384 /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- redis (LoadError) from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from cluster/redis-trib.rb:25 [root@localhost jack]#
或者有问题，这次貌似是一个gem_original_require没有安装，固然这个通常为说ruby版本太老了，所以现在亲要末升级ruby版本，要末直接安装ruby的redis驱动。
[root@localhost jack]# gem install redis Successfully installed redis⑶.3.0 1 gem installed Installing ri documentation for redis⑶.3.0... Installing RDoc documentation for redis⑶.3.0...
6. 运行replicas命令
终究貌似所有的依赖我们都解决了，接下来就能够真的履行了。
[root@localhost jack]# cluster/redis-trib.rb create –replicas 1 192.168.161.133:6379 192.168.161.133:6380 192.168.161.133:6381 192.168.161.133:6382 192.168.161.133:6383 192.168.161.133:6384
>>> Creating cluster
>>> Performing hash slots allocation on 6 nodes…
Using 3 masters:
192.168.161.133:6379
192.168.161.133:6380
192.168.161.133:6381
Adding replica 192.168.161.133:6382 to 192.168.161.133:6379
Adding replica 192.168.161.133:6383 to 192.168.161.133:6380
Adding replica 192.168.161.133:6384 to 192.168.161.133:6381
M: fdae457e803e2e04a7c549c69b44a2beefdae3bc 192.168.161.133:6379
slots:0⑸460 (5461 slots) master
M: 74285cee0fa65e64b443ecc630e447a8a65ee9f8 192.168.161.133:6380
slots:5461⑴0922 (5462 slots) master
M: 14ed067a1b85044325d5800fa8479a6b4e41a10c 192.168.161.133:6381
slots:10923⑴6383 (5461 slots) master
S: c50b1ff1fe3a00b16703f3b5705d2dafe046240b 192.168.161.133:6382
replicates fdae457e803e2e04a7c549c69b44a2beefdae3bc
S: 8f7bd92f7ffb48e327820693a5820b5be7ea5556 192.168.161.133:6383
replicates 74285cee0fa65e64b443ecc630e447a8a65ee9f8
S: 4a85ed078b4c99afad7f3a9a8df09082c681a649 192.168.161.133:6384
replicates 14ed067a1b85044325d5800fa8479a6b4e41a10c
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 192.168.161.133:6379)
M: fdae457e803e2e04a7c549c69b44a2beefdae3bc 192.168.161.133:6379
slots:0⑸460 (5461 slots) master
M: 74285cee0fa65e64b443ecc630e447a8a65ee9f8 192.168.161.133:6380
slots:5461⑴0922 (5462 slots) master
M: 14ed067a1b85044325d5800fa8479a6b4e41a10c 192.168.161.133:6381
slots:10923⑴6383 (5461 slots) master
M: c50b1ff1fe3a00b16703f3b5705d2dafe046240b 192.168.161.133:6382
slots: (0 slots) master
replicates fdae457e803e2e04a7c549c69b44a2beefdae3bc
M: 8f7bd92f7ffb48e327820693a5820b5be7ea5556 192.168.161.133:6383
slots: (0 slots) master
replicates 74285cee0fa65e64b443ecc630e447a8a65ee9f8
M: 4a85ed078b4c99afad7f3a9a8df09082c681a649 192.168.161.133:6384
slots: (0 slots) master
replicates 14ed067a1b85044325d5800fa8479a6b4e41a10c
[OK] All nodes agree about slots configuration.
>>> Check for open slots…
>>> Check slots coverage…
[OK] All 16384 slots covered.
[root@localhost jack]#
从上面可以看到，trib程序告知我们会不会用 6379，6380，6381 作为主， 6382，6383，6384作为从。。然后我就恩准了。。就这样我们的集群就创建好了
文章来源：丸子建站
文章标题：redis集群搭建_动力节点Java学院整理
https://www.wanzijz.com/view/58481.html
