亿级流量电商详情页系统实战-4.centos集群搭建

秒速五厘米 2023-01-05 01:16 89阅读 0赞

# 1.规划 #

<table> 
 <thead> 
  <tr> 
   <th>主机名</th> 
   <th>IP</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>eshop-cache01</td> 
   <td>192.168.135.126</td> 
  </tr> 
  <tr> 
   <td>eshop-cache02</td> 
   <td>192.168.135.129</td> 
  </tr> 
  <tr> 
   <td>eshop-cache03</td> 
   <td>192.168.135.130</td> 
  </tr> 
  <tr> 
   <td>eshop-cache04</td> 
   <td>192.168.135.134</td> 
  </tr> 
 </tbody> 
</table>

# 2.环境配置 #

## 2.1 配置网络 ##

#vi /etc/sysconfig/network-scripts/ifcfg-ens33
    
    BOOTPROTO="static"
    ONBOOT="yes"
    IPADDR="192.168.135.128"
    GATEWAY="1921.168.135.1"
    NETMASK="255.255.255.0"
    DNS1="221.131.143.69"
    DNS2="114.114.114.114"
    
    #systemctl restart network

## 2.2 配置hosts ##

#vi /etc/hosts
    配置本机的hostname到ip地址的映射

## 2.3 关闭防火墙 ##

#systemctl stop firewalld.service 
    #systemctl disable firewalld.service

最好也关闭windows的防火墙，后面要搭建集群，有的大数据技术的集群之间，在本地你给了防火墙的话，可能会没有办法互相连接，会导致搭建失败 --我暂时没有关闭，如果后面有问题的话，再关闭

## 2.4 禁用SELINUX ##

#vi /etc/selinux/config
    SELINUX=disabled

## 2.5 使用阿里源 ##

#cd /etc/yum.repos.d 
    #mv CentOS-Base.repo CentOS-Base.repo.bak
    #wget -O CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
    #yum clean all 
    #yum makecache

## 2.6 安装JDK 1.8 ##

1.  将jdk-linux-x64.rpm通过WinSCP上传到虚拟机中
2.  安装JDK：rpm -ivh jdk-linux-x64.rpm
3.  配置jdk相关的环境变量
    
        #vi .bashrc
        export JAVA_HOME=/usr/java/latest
        export PATH=$PATH:$JAVA_HOME/bin
        #source .bashrc
4.  测试jdk安装是否成功：java -version

## 2.7 安装Perl ##

由于我安装操作系统时，选择是服务器版，已存在perl，不需要在安装了。

## 2.8 配置4台CentOS为ssh免密码互相通信 ##

1.  在4台虚拟机中，分别增加其它主机名
    
        #vi /etc/hosts
        192.168.135.126  eshop-cache01
        192.168.135.129  eshop-cache02
        192.168.135.130  eshop-cache03
        192.168.135.134  eshop-cache04
2.  在eshop-cache01主机中生成公钥
    
        [root@eshop-cache01 ~]# cd
        [root@eshop-cache01 ~]# ssh-keygen -t rsa
        Generating public/private rsa key pair.
        Enter file in which to save the key (/root/.ssh/id_rsa): 
        Created directory '/root/.ssh'.
        Enter passphrase (empty for no passphrase): 
        Enter same passphrase again: 
        Your identification has been saved in /root/.ssh/id_rsa.
        Your public key has been saved in /root/.ssh/id_rsa.pub.
        The key fingerprint is:
        SHA256:G1I5NlPMGVa4iXHN3k9d0ARUhwc7asL9qJgzhk8psRE root@eshop-cache01
        The key's randomart image is: +---[RSA 2048]----+ | o+B..=O+| | .+* o ..=| | E B+ + .o.o| | +.=o.....o| | + S o + o | | = + o o .| | o.+ . . | | .o+o . | | o+o. | +----[SHA256]-----+ [root@eshop-cache01 ~]# cd /root/.ssh [root@eshop-cache01 .ssh]# cp id_rsa.pub authorized_keys [root@eshop-cache01 .ssh]# ssh eshop-cache01 The authenticity of host 'eshop-cache01 (192.168.135.126)' can't be established.
        ECDSA key fingerprint is SHA256:IMfDHqpF+vUaLMGwqMQcBdgJMXG52mmHeKD647Nckts.
        ECDSA key fingerprint is MD5:2e:4d:92:fc:fb:68:71:b8:eb:00:2f:42:22:7b:c9:67.
        Are you sure you want to continue connecting (yes/no)? yes
3.  将公钥发放到其它机器中
    
        [root@eshop-cache01 ~]# ssh-copy-id -i eshop-cache02
        /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
        The authenticity of host 'eshop-cache02 (192.168.135.129)' can't be established. ECDSA key fingerprint is SHA256:IMfDHqpF+vUaLMGwqMQcBdgJMXG52mmHeKD647Nckts. ECDSA key fingerprint is MD5:2e:4d:92:fc:fb:68:71:b8:eb:00:2f:42:22:7b:c9:67. Are you sure you want to continue connecting (yes/no)? yes /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys root@eshop-cache02's password: 
        
        Number of key(s) added: 1
        
        Now try logging into the machine, with:   "ssh 'eshop-cache02'"
        and check to make sure that only the key(s) you wanted were added.
        
        [root@eshop-cache01 ~]# ssh-copy-id -i eshop-cache03 
        /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
        The authenticity of host 'eshop-cache03 (192.168.135.130)' can't be established. ECDSA key fingerprint is SHA256:IMfDHqpF+vUaLMGwqMQcBdgJMXG52mmHeKD647Nckts. ECDSA key fingerprint is MD5:2e:4d:92:fc:fb:68:71:b8:eb:00:2f:42:22:7b:c9:67. Are you sure you want to continue connecting (yes/no)? yes /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys root@eshop-cache03's password: 
        
        Number of key(s) added: 1
        
        Now try logging into the machine, with:   "ssh 'eshop-cache03'"
        and check to make sure that only the key(s) you wanted were added.
        
        [root@eshop-cache01 ~]# ssh-copy-id -i eshop-cache04
        /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
        The authenticity of host 'eshop-cache04 (192.168.135.134)' can't be established. ECDSA key fingerprint is SHA256:IMfDHqpF+vUaLMGwqMQcBdgJMXG52mmHeKD647Nckts. ECDSA key fingerprint is MD5:2e:4d:92:fc:fb:68:71:b8:eb:00:2f:42:22:7b:c9:67. Are you sure you want to continue connecting (yes/no)? yes /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys root@eshop-cache04's password: 
        
        Number of key(s) added: 1
        
        Now try logging into the machine, with:   "ssh 'eshop-cache04'"
        and check to make sure that only the key(s) you wanted were added.
        
        
        [root@eshop-cache01 ~]# ssh eshop-cache02
        Last login: Tue Jan 12 10:16:01 2021 from 192.168.135.1
        [root@eshop-cache02 ~]# exit
        登出
        Connection to eshop-cache02 closed.
        [root@eshop-cache01 ~]# ssh eshop-cache03
        Last login: Tue Jan 12 09:45:44 2021 from 192.168.135.1
        [root@eshop-cache03 ~]# exit
        登出
        Connection to eshop-cache03 closed.
        [root@eshop-cache01 ~]# ssh eshop-cache04
        Last login: Tue Jan 12 10:15:00 2021 from 192.168.135.1
        [root@eshop-cache04 ~]# exit
        登出
        Connection to eshop-cache04 closed.
4.  在其它主机上配置相关免登陆功能
    
        [root@eshop-cache03 .ssh]# ssh-keygen -t rsa
        Generating public/private rsa key pair.
        Enter file in which to save the key (/root/.ssh/id_rsa): 
        Enter passphrase (empty for no passphrase): 
        Enter same passphrase again: 
        Your identification has been saved in /root/.ssh/id_rsa.
        Your public key has been saved in /root/.ssh/id_rsa.pub.
        The key fingerprint is:
        SHA256:+chlB1L0jDe6Rq5BXbZV7pgHF3Qd77KXxWjhCmD7clg root@eshop-cache03
        The key's randomart image is: +---[RSA 2048]----+ | .o .+=| | . + o=| | + o B + +| | . * * = @ | | S E o B *| | o @ + o +o| | * B . ...| | * . | | . | +----[SHA256]-----+ [root@eshop-cache03 .ssh]# ssh-copy-id -i eshop-cache01 /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub" The authenticity of host 'eshop-cache01 (192.168.135.126)' can't be established.
        ECDSA key fingerprint is SHA256:IMfDHqpF+vUaLMGwqMQcBdgJMXG52mmHeKD647Nckts.
        ECDSA key fingerprint is MD5:2e:4d:92:fc:fb:68:71:b8:eb:00:2f:42:22:7b:c9:67.
        Are you sure you want to continue connecting (yes/no)? yes
        /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
        /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
        root@eshop-cache01's password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'eshop-cache01'"
        and check to make sure that only the key(s) you wanted were added.
5.  将eshop-cache01中的authorized\_keys拷贝到其它主机中
    
        [root@eshop-cache01 .ssh]# scp /root/.ssh/authorized_keys eshop-cache02:/root/.ssh
        authorized_keys                                                                                                                                         100% 1600     1.6MB/s   00:00    
        [root@eshop-cache01 .ssh]# scp /root/.ssh/authorized_keys eshop-cache03\:/root/.ssh
        authorized_keys                                                                                                                                         100% 1600     1.7MB/s   00:00    
        [root@eshop-cache01 .ssh]# scp /root/.ssh/authorized_keys eshop-cache04:/root/.ssh 
        authorized_keys