网站建设岗位职责,互联网产品推广是做什么的,中国搜索引擎有哪些,seo实战密码电子书现在项目上用redis的话#xff0c;很少说不用集群的情况#xff0c;毕竟如果生产上只有一台redis会有极大的风险#xff0c;比如机器挂掉#xff0c;或者内存爆掉#xff0c;就比如我们生产环境 曾今也遭遇到这种情况#xff0c;导致redis内存不够挂掉的情况#xff0c;… 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者内存爆掉就比如我们生产环境 曾今也遭遇到这种情况导致redis内存不够挂掉的情况当然这些都是我们及其不能容忍的第一个必须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版本下载方式还是非常简单的比如官网介绍的这样。 $ wget http://download.redis.io/releases/redis-3.2.0.tar.gz
$ tar xzf redis-3.2.0.tar.gz
$ cd redis-3.2.0
$ 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的分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文件这个文件用于存放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nodes-6379.conf 可以根据 端口文件夹依次配置比如6380文件夹可以改成nodes-6380.conf这样。。。 # Normal Redis instances cant 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 nodes-6379.conf 3 directory 为了方便管理我这里配置的root目录取决于在哪个文件夹比如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可以发现这个默认就是不让外界可以访问redis所以这里我们就改为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就修改完毕了其他端口的文件夹也可以依次配置之~ 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真的好么么哒~~~窗口太多有点萌萌的。 接下来我们可以看一下在6379下面是不是有生成node-6379.conf文件比如下面 三配置redis-trib.rb 因为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. 执行replicas命令 [jacklocalhost ~]$ 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
[jacklocalhost ~]$ 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】 [jacklocalhost ~]$ sudo
usage: sudo [-D level] -h | -K | -k | -V
usage: sudo -v [-AknS] [-D level] [-g groupname|#gid] [-p prompt] [-u username|#uid]
usage: sudo -l[l] [-AknS] [-D level] [-g groupname|#gid] [-p prompt] [-U username] [-u user name|#uid] [-g groupname|#gid] [command]
usage: sudo [-AbEHknPS] [-r role] [-t type] [-C fd] [-D level] [-ggroupname|#gid] [-p prompt] [-u user name|#uid] [-g groupname|#gid][VARvalue] [-i|-s] [command]
usage: sudo -e [-AknS] [-r role] [-t type] [-C fd] [-D level] [-ggroupname|#gid] [-p prompt] [-u user name|#uid] file ...
[jacklocalhost ~]$ su
Password:
jacsu: incorrect password
[jacklocalhost ~]$ yum install ruby
Loaded plugins: fastestmirror, refresh-packagekit, security
You need to be root to perform this command.
[jacklocalhost ~]$ jack
bash: jack: command not found
[jacklocalhost ~]$ su
Password:
[rootlocalhost 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 0:1.8.7.374-4.el6_6 will be installed
-- Processing Dependency: ruby-libs 1.8.7.374-4.el6_6 for package: ruby-1.8.7.374-4.el6_6.x86_64
-- Processing Dependency: libruby.so.1.8()(64bit) for package: ruby-1.8.7.374-4.el6_6.x86_64
-- Running transaction check
--- Package ruby-libs.x86_64 0:1.8.7.374-4.el6_6 will be installed
-- Processing Dependency: libreadline.so.5()(64bit) for package: ruby-libs-1.8.7.374-4.el6_6.x86_64
-- Running transaction check
--- Package compat-readline5.x86_64 0:5.2-17.1.el6 will be installed
-- Finished Dependency ResolutionDependencies ResolvedPackage Arch Version Repository SizeInstalling:ruby x86_64 1.8.7.374-4.el6_6 base 538 k
Installing for dependencies:compat-readline5 x86_64 5.2-17.1.el6 base 130 kruby-libs x86_64 1.8.7.374-4.el6_6 base 1.7 MTransaction SummaryInstall 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-readline5-5.2-17.1.el6.x86_64.rpm | 130 kB 00:00
(2/3): ruby-1.8.7.374-4.el6_6.x86_64.rpm | 538 kB 00:00
(3/3): ruby-libs-1.8.7.374-4.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-CentOS-6
Importing GPG key 0xC105B9DE:Userid : CentOS-6 Key (CentOS 6 Official Signing Key) centos-6-keycentos.orgPackage: centos-release-6-5.el6.centos.11.1.x86_64 (anaconda-CentOS-201311272149.x86_64/6.5)From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
Is this ok [y/N]: y
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running TransactionInstalling : compat-readline5-5.2-17.1.el6.x86_64 1/3 Installing : ruby-libs-1.8.7.374-4.el6_6.x86_64 2/3 Installing : ruby-1.8.7.374-4.el6_6.x86_64 3/3 Verifying : compat-readline5-5.2-17.1.el6.x86_64 1/3 Verifying : ruby-libs-1.8.7.374-4.el6_6.x86_64 2/3 Verifying : ruby-1.8.7.374-4.el6_6.x86_64 3/3 Installed:ruby.x86_64 0:1.8.7.374-4.el6_6 Dependency Installed:compat-readline5.x86_64 0:5.2-17.1.el6 ruby-libs.x86_64 0:1.8.7.374-4.el6_6 Complete!
[rootlocalhost jack]# 3. 安装rubygems 接着我们再次运行 replicas命令看看会怎么样。。。 [rootlocalhost 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
[rootlocalhost jack]# 结果苦逼了还是报错看提示貌似是少了一个rubygems这次我们还是通过yum安装。 [rootlocalhost 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 0:1.3.7-5.el6 will be installed
-- Processing Dependency: ruby-rdoc for package: rubygems-1.3.7-5.el6.noarch
-- Running transaction check
--- Package ruby-rdoc.x86_64 0:1.8.7.374-4.el6_6 will be installed
-- Processing Dependency: ruby-irb 1.8.7.374-4.el6_6 for package: ruby-rdoc-1.8.7.374-4.el6_6.x86_64
-- Running transaction check
--- Package ruby-irb.x86_64 0:1.8.7.374-4.el6_6 will be installed
-- Finished Dependency ResolutionDependencies ResolvedPackage Arch Version Repository SizeInstalling:rubygems noarch 1.3.7-5.el6 base 207 k
Installing for dependencies:ruby-irb x86_64 1.8.7.374-4.el6_6 base 317 kruby-rdoc x86_64 1.8.7.374-4.el6_6 base 381 kTransaction SummaryInstall 3 Package(s)Total download size: 905 k
Installed size: 3.0 M
Downloading Packages:
(1/3): ruby-irb-1.8.7.374-4.el6_6.x86_64.rpm | 317 kB 00:00
(2/3): ruby-rdoc-1.8.7.374-4.el6_6.x86_64.rpm | 381 kB 00:00
(3/3): rubygems-1.3.7-5.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 TransactionInstalling : ruby-irb-1.8.7.374-4.el6_6.x86_64 1/3 Installing : ruby-rdoc-1.8.7.374-4.el6_6.x86_64 2/3 Installing : rubygems-1.3.7-5.el6.noarch 3/3 Verifying : ruby-rdoc-1.8.7.374-4.el6_6.x86_64 1/3 Verifying : ruby-irb-1.8.7.374-4.el6_6.x86_64 2/3 Verifying : rubygems-1.3.7-5.el6.noarch 3/3 Installed:rubygems.noarch 0:1.3.7-5.el6 Dependency Installed:ruby-irb.x86_64 0:1.8.7.374-4.el6_6 ruby-rdoc.x86_64 0:1.8.7.374-4.el6_6 Complete!
[rootlocalhost jack]# 4. 安装redis驱动 还是继续不死心我们继续运行replicas命令命令。 [rootlocalhost 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 requirefrom cluster/redis-trib.rb:25
[rootlocalhost jack]# 卧槽还是有问题这次貌似是一个gem_original_require没有安装当然这个一般是说ruby版本太老了所以现在亲要么升级ruby版本要么直接安装 ruby的redis驱动。 [rootlocalhost jack]# gem install redis
Successfully installed redis-3.3.0
1 gem installed
Installing ri documentation for redis-3.3.0...
Installing RDoc documentation for redis-3.3.0... 6. 运行replicas命令 终于貌似所有的依赖我们都解决了接下来就可以真的执行了真是一把辛酸泪啊。。。操。。。 [rootlocalhost 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 192.168.161.133:6384Creating clusterPerforming 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 192.168.161.133:6379slots:0-5460 (5461 slots) master
M: 74285cee0fa65e64b443ecc630e447a8a65ee9f8 192.168.161.133:6380slots:5461-10922 (5462 slots) master
M: 14ed067a1b85044325d5800fa8479a6b4e41a10c 192.168.161.133:6381slots:10923-16383 (5461 slots) master
S: c50b1ff1fe3a00b16703f3b5705d2dafe046240b 192.168.161.133:6382replicates fdae457e803e2e04a7c549c69b44a2beefdae3bc
S: 8f7bd92f7ffb48e327820693a5820b5be7ea5556 192.168.161.133:6383replicates 74285cee0fa65e64b443ecc630e447a8a65ee9f8
S: 4a85ed078b4c99afad7f3a9a8df09082c681a649 192.168.161.133:6384replicates 14ed067a1b85044325d5800fa8479a6b4e41a10c
Can I set the above configuration? (type yes to accept): yesNodes configuration updatedAssign a different config epoch to each nodeSending 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 192.168.161.133:6379slots:0-5460 (5461 slots) master
M: 74285cee0fa65e64b443ecc630e447a8a65ee9f8 192.168.161.133:6380slots:5461-10922 (5462 slots) master
M: 14ed067a1b85044325d5800fa8479a6b4e41a10c 192.168.161.133:6381slots:10923-16383 (5461 slots) master
M: c50b1ff1fe3a00b16703f3b5705d2dafe046240b 192.168.161.133:6382slots: (0 slots) masterreplicates fdae457e803e2e04a7c549c69b44a2beefdae3bc
M: 8f7bd92f7ffb48e327820693a5820b5be7ea5556 192.168.161.133:6383slots: (0 slots) masterreplicates 74285cee0fa65e64b443ecc630e447a8a65ee9f8
M: 4a85ed078b4c99afad7f3a9a8df09082c681a649 192.168.161.133:6384slots: (0 slots) masterreplicates 14ed067a1b85044325d5800fa8479a6b4e41a10c
[OK] All nodes agree about slots configuration.Check for open slots...Check slots coverage...
[OK] All 16384 slots covered.
[rootlocalhost jack]# 从上面可以看到trib程序告知我们是否用 637963806381 作为主 638263836384作为从。。然后我就恩准了。。就这样我们的集群 就创建好了好了这篇就讲到这里也不是特别复杂吧~~~ 转载于:https://www.cnblogs.com/huangxincheng/p/5615037.html
