简单Web服务器集群与MySQL集群搭建

简单Web服务器集群与MySQL主从搭建

目的：实现简单的Web服务器的负载均衡+mysql主从

所用环境：CentOS Linux release 7.5.1804 (Core)

规划：

主机名	IP地址	部署服务	所用版本
proxy	192.168.4.80/24	Nginx代理	nginx/1.12.2
web1	192.168.4.90/24	Nginx+Tomcat	nginx/1.12.2
web2	192.168.4.91/24	Nginx+Tomcat	nginx/1.12.2 tomcat/9.0.6
web3	192.168.4.92/24	Nginx+Tomcat	nginx/1.12.2 tomcat/9.0.6
mysql-1	192.168.4.93/24	MySQL主从	5.7.17 MySQL Community Server
mysql-2	192.168.4.94/24	MySQL主从	5.7.17 MySQL Community Server

• #准备环境:
  1.将Nginx-1.12.2下载并传给所有需要的主机

[root@proxy ~]# wget http://nginx.org/download/nginx-1.12.2.tar.gz
[root@proxy ~]# scp /root/nginx-1.12.2.tar.gz  root@192.168.4.91:/root
                        #后面两台也可以做好一台解压好的Nginx修改过版本信息的直接传目录
[root@proxy ~]# scp /root/nginx-1.12.2.tar.gz  root@192.168.4.92:/root   
[root@proxy ~]# scp /root/nginx-1.12.2.tar.gz  root@192.168.4.93:/root

2.下载MySQL5.7-bundle包并传给需要的主机

[root@proxy ~]# wget  https://dev.mysql.com/get/Downloads/MySQL-8.0/mysql-8.0.16-2.el7.x86_64.rpm-bundle.tar
[root@proxy ~]# scp /root/mysql-8.0.16-2.el7.x86_64.rpm-bundle.tar root@192.168.4.93:/root/
[root@proxy ~]# scp /root/mysql-8.0.16-2.el7.x86_64.rpm-bundle.tar root@192.168.4.93:/root/

3.下载Tomcat,并传至web主机

[root@proxy ~]# wget  http://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-9/v9.0.20/bin/apache-tomcat-9.0.20.tar.gz
配置好一台Web主机后,直接传文件给其他web主机

• #proxy主机
  1.安装Nginx依赖；

[root@proxy nginx-1.12.2]# yum -y install gcc pcre-devel openssl-devel 

2.源码包安装Nginx；

[root@proxy ~]# tar -xf nginx-1.12.2.tar.gz
[root@proxy ~]# useradd -s /sbin/nologin  nginx
[root@proxy ~]# cd nginx-1.12.2/
[root@proxy nginx-1.12.2]# ls
auto  CHANGES  CHANGES.ru  conf  configure  contrib  html  LICENSE  man  README  src
--with-stream
[root@proxy nginx-1.12.2]# vim src/http/ngx_http_header_filter_module.c   #修改源码隐藏版本号
static u_char ngx_http_server_string[] = "Server: windowXP" CRLF;				#检索Server能快速定位该行
static u_char ngx_http_server_full_string[] = "Server:windowsXP"  CRLF;
static u_char ngx_http_server_build_string[] = "Server:windowsXP" CRLF;
:wq! 
[root@proxy nginx-1.12.2]# ./configure --user=nginx --group=nginx --with-stream --without-http_autoindex_module
[root@proxy nginx-1.12.2]# make  &&   make  install

3.修改配置文件，设置代理；

[root@proxy ~]# vim /usr/local/nginx/conf/nginx.conf
http {
    include       mime.types;
    default_type  application/octet-stream;

    upstream webserver {                                                 #设定一个weibserver调度集群
        server 192.168.4.90:80 max_fails=2 fail_timeout=30s;
        server 192.168.4.91:80 max_fails=2 fail_timeout=30s;
        server 192.168.4.92:80 max_fails=2 fail_timeout=30s;
    } 
  ……
    server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            proxy_pass http://webserver;                            #代理到http://webserver
            proxy_set_header host $host;                          
            root   html;
            index  index.html index.htm;
        }

4.做一个Nginx的软链接，开启服务；

[root@proxy nginx-1.12.2]#  ln  -s  /usr/local/nginx/sbin/nginx  /usr/sbin/    #做一个软链接方便使用
[root@proxy nginx-1.12.2]# nginx                        #开启ngxin服务
[root@proxy nginx-1.12.2]# netstat  -tunlp  | grep 80   #确定nginx80端口已开启

• #Web主机
  所有web主机均这样操作-第一台做好后,直接将nginx目录,tomcat目录,传到其他web主机,其他Web主机只需yum安装对应组件,创建Nginx用户,在最后我总结了其他Web服务器的相应操作!

1.安装Nginx,php-fpm;

[root@web1 nginx-1.12.2]# yum -y install gcc pcre-devel openssl-devel　　＃安装Nginx依赖
[root@web1 nginx-1.12.2]# yum -y install php php-fpm php-mysql          #安装PHP对应组件

[root@web1 ~]# tar -xf nginx-1.12.2.tar.gz
[root@web1 ~]# cd  nginx-1.12.2/
[root@web1 nginx-1.12.2]# vim src/http/ngx_http_header_filter_module.c 
static u_char ngx_http_server_string[] = "Server:WindowXP" CRLF;
static u_char ngx_http_server_full_string[] = "Server:WindowXP" CRLF;
static u_char ngx_http_server_build_string[] = "Server:WindowXP" CRLF;	#修改版本信息
[root@web1 nginx-1.12.2]# useradd -s /sbin/nologin nginx
[root@web1 nginx-1.12.2]# ./configure --prefix=/usr/local/nginx --user=nginx --group=nginx --without-http_autoindex_module  --with-stream --with-http_stub_status_module
[root@web1 nginx-1.12.2]# make && make  install 

2.修改Nginx配置文件;

[root@web1 nginx-1.12.2]# vim /usr/local/nginx/conf/nginx.conf
......
http {
    include       mime.types;
    default_type  application/octet-stream;

    upstream tom {                            #定义一个Tomcat调度
        server 127.0.0.1:8080 max_fails=2 fail_timeout=30s;
    }

	......
        
        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        location ~ \.php$ {                            #打开location匹配php结尾的,做动静分离
            root           html;
            fastcgi_pass   127.0.0.1:9000;             #也可以使用套接字连接,更为高效
            fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
            include        fastcgi.conf;
        }
         location ~ \.jsp$ {                         #匹配以jsp结尾的调度到tom集群
            proxy_pass  http://tom;
        }
    ......   
 :wq 保存

3.启动Nginx,php-fpm;

[root@web1 nginx-1.12.2]# /usr/local/nginx/sbin/nginx      #启动Nginx服务
[root@web1 nginx-1.12.2]# php -m | grep mysql            #确认php支持mysql数据库
mysql 
mysqli
pdo_mysql
[root@web1 ~]# cd 
[root@web1 ~]# systemctl start php-fpm
[root@web1 ~]# ss -tunlp | grep 80
tcp    LISTEN     0      128       *:80                    *:*                   users:(("nginx",pid=4002,fd=6),("nginx",pid=4001,fd=6))
[root@web1 ~]# ss -tunlp | grep 9000
tcp    LISTEN     0      128    127.0.0.1:9000                  *:*                   users:(("php-fpm",pid=4018,fd=0),("php-fpm",pid=4017,fd=0),("php-fpm",pid=4016,fd=0),("php-fpm",pid=4015,fd=0),("php-fpm",pid=4014,fd=0),("php-fpm",pid=4012,fd=6))

[root@web1 ~]# vim /usr/local/nginx/html/mysql.php            #手动写一个php连接mysql测试页面
<?php
$mysqli = new mysqli('192.168.4.93','root','asd123...Z','mysql');　　　＃IP，用户，密码，库
if (mysqli_connect_errno()){
       die('Unable to connect!'). mysqli_connect_error();
}
$sql = "select * from user";
$result = $mysqli->query($sql);
while($row = $result->fetch_array()){
       printf("Host:%s",$row[0]);
       printf("
");
       printf("Name:%s",$row[1]);
       printf("
");
}[root@web1 ~]# echo 192.168.4.91 > /usr/local/nginx/html/index.html

?>
:wq 保存,还不能测试因为MySQL服务器还没有搭建好!

4.安装Tomcat;

[root@web1 ~]# yum -y install java-1.8.0-openjdk.x86_64      #安装支持java环境(所有主机都需执行)
[root@web1 ~]# tar -xf apache-tomcat-9.0.6.tar.gz 
[root@web1 ~]# mv apache-tomcat-9.0.6 /usr/local/tomcat
[root@web1 ~]# echo tom > /usr/local/tomcat/webapps/ROOT/1.jsp	 #写入一个测试页面
[root@web1 ~]# /usr/local/tomcat/bin/startup.sh 			#开启tomcat服务
[root@web1 ~]# curl http://localhost:8080/1.jsp             #访问测试
tom

5.后续操作,将nginx目录,tomcat目录,传给其他Web服务器,免除复杂操作;

[root@web1 ~]# scp -r  /usr/local/nginx root@192.168.4.93:/usr/local/      #将Nginx目录传给其他Web服务器
[root@web1 ~]# scp -r  /usr/local/nginx root@192.168.4.94:/usr/local/
[root@web1 ~]# scp -r  /usr/local/tomcat root@192.168.4.93:/usr/local/      #将Tomcat直接传到其他web服务器
[root@web1 ~]# scp -r  /usr/local/tomcat root@192.168.4.94:/usr/local/

• #其他Web主机(web2 web3相同操作)

[root@web2 ~]# yum -y install gcc pcre-devel openssl-devel
[root@web2 ~]# yum -y install php php-fpm php-mysql          #安装PHP对应组件
[root@web2 ~]# useradd -s /sbin/nologin nginx
[root@web2 ~]# /usr/local/nginx/sbin/nginx                  #启动Nginx服务
[root@web1 ~]# echo 192.168.4.91 > /usr/local/nginx/html/index.html

[root@web2 ~]# yum -y install java-1.8.0-openjdk.x86_64      #安装支持java环境(所有主机都需执行)
[root@web2 ~]# /usr/local/tomcat/bin/startup.sh 			#开启tomcat服务
[root@web2 ~]# systemctl  start  php-fpm				#启动php-fpm
[root@web2 ~]# systemctl  enable php-fpm				#设置php-fpm开机自启
	一定要记得开启3个服务!
[root@web2 ~]# ss -tunlp | grep java
tcp    LISTEN     0      1      ::ffff:127.0.0.1:8005                 :::*                   users:(("java",pid=25894,fd=75))
tcp    LISTEN     0      100      :::8009                 :::*                   users:(("java",pid=25894,fd=53))
tcp    LISTEN     0      100      :::8080                 :::*                   users:(("java",pid=25894,fd=48))
[root@web2 ~]# ss -tunlp | grep nginx
tcp    LISTEN     0      128       *:80                    *:*                   users:(("nginx",pid=25853,fd=6),("nginx",pid=25852,fd=6))
[root@web2 ~]# ss -tunlp | grep  9000
tcp    LISTEN     0      128    127.0.0.1:9000                  *:*                   users:(("php-fpm",pid=26045,fd=0),("php-fpm",pid=26044,fd=0),("php-fpm",pid=26043,fd=0),("php-fpm",pid=26042,fd=0),("php-fpm",pid=26041,fd=0),("php-fpm",pid=26039,fd=6))

• #MySQL-1主机
  1.安装MySQL；

[root@mysql-1 ~]# ls                                    #查看mysql5.7.bundle包是否在
[root@mysql-1 ~]# mkdir mysql5                           #当前目录下创建个目录（因为bundle包解压出来东西太多了）
[root@mysql-1 ~]# tar -xf mysql-5.7.17-1.el7.x86_64.rpm-bundle.tar  -C /root/mysql5
[root@mysql-1 ~]# cd /root/mysql5/
[root@mysql-1 mysql5]# ls
mysql-community-client-5.7.17-1.el7.x86_64.rpm
mysql-community-common-5.7.17-1.el7.x86_64.rpm
mysql-community-devel-5.7.17-1.el7.x86_64.rpm
mysql-community-embedded-5.7.17-1.el7.x86_64.rpm
mysql-community-embedded-compat-5.7.17-1.el7.x86_64.rpm
mysql-community-embedded-devel-5.7.17-1.el7.x86_64.rpm
mysql-community-libs-5.7.17-1.el7.x86_64.rpm
mysql-community-libs-compat-5.7.17-1.el7.x86_64.rpm
mysql-community-minimal-debuginfo-5.7.17-1.el7.x86_64.rpm
mysql-community-server-5.7.17-1.el7.x86_64.rpm
mysql-community-test-5.7.17-1.el7.x86_64.rpm
[root@mysql-1 mysql5]# yum -y install /root/mysql5/mysql-community-*.rpm    #安装mysql的所有rpm包
安装时间较长，需耐心等待一阵子～
完毕！

2.修改初始密码；

[root@mysql-1 mysql5]# systemctl start mysqld                    #开启mysql服务(mysql服务初次启动初始密码在日志中)
[root@mysql-1 mysql5]# grep password /var/log/mysqld.log 
2019-05-26T10:21:52.818781Z 1 [Note] A temporary password is generated for root@localhost: <9MAc!Xl1*oo
[root@mysql-1 mysql5]# mysql -uroot -p'<9MAc!Xl1*oo'             #使用初始密码登陆
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.17

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> alter user user() identified by "asd123...Z";            #第一步先修改密码（只有修改密码了才能做其他操作,修改为Web测试页面中对应的）
Query OK, 0 rows affected (0.00 sec)

mysql> exit	                              	#退出，修改配置文件，做从库设置

3.更改配置文件，开启从库设置；

[root@mysql-2 mysql5]# systemctl stop mysqld
[root@mysql-2 mysql5]# vim /etc/my.cnf
[mysqld]
server_id=93                      #在其中加入这行，开启服务器id（我这里使用的ip最后一位可以自定义多台mysql集群id别重复就行）
log_bin=master93				      #开启binlog日志，并自定义binlog日志名（如做一个纯从库可以不用这步）
……
：wq 保存退出
[root@mysql-2 mysql5]# systemctl restart mysqld                #重启MySQL服务

4.授权一个slave用户;

[root@mysql-1 mysql5]# mysql -uroot -p'asd123...Z' 
mysql> create user testslave@"%" identified by "asd123...Z";	#创建一个mysql用户(mysql-5.7也可以直接授权,免去创建,但8.0开始不支持直接授权,需先创建用户
mysql> grant replication slave on *.* to testslave@"%"; 		#授权一个只能复制binlog日志的用户
mysql> show grants for testslave@"%";                   #查看权限是否正确

5.查看主库master状态；

mysql> show master status;                   #主库上查看binlog日志状态
+----------------+----------+--------------+------------------+-------------------+
| File           | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+----------------+----------+--------------+------------------+-------------------+
| master93.000001 |      605 |             |                  |                   |   #偏移量可能不同,根据自己情况
+----------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
mysql> exit				#已完成主库所有操作

• #MySQL-2主机
  1.安装MySQL；

[root@mysql-2 ~]# ls                                    #查看mysql5.7.bundle包是否在
[root@mysql-2 ~]# mkdir mysql5                           #当前目录下创建个目录（因为bundle包解压出来东西太多了）
[root@mysql-2 ~]# tar -xf mysql-5.7.17-1.el7.x86_64.rpm-bundle.tar  -C /root/mysql5
[root@mysql-2 ~]# cd /root/mysql5/
[root@mysql-2 mysql5]# ls
mysql-community-client-5.7.17-1.el7.x86_64.rpm
mysql-community-common-5.7.17-1.el7.x86_64.rpm
mysql-community-devel-5.7.17-1.el7.x86_64.rpm
mysql-community-embedded-5.7.17-1.el7.x86_64.rpm
mysql-community-embedded-compat-5.7.17-1.el7.x86_64.rpm
mysql-community-embedded-devel-5.7.17-1.el7.x86_64.rpm
mysql-community-libs-5.7.17-1.el7.x86_64.rpm
mysql-community-libs-compat-5.7.17-1.el7.x86_64.rpm
mysql-community-minimal-debuginfo-5.7.17-1.el7.x86_64.rpm
mysql-community-server-5.7.17-1.el7.x86_64.rpm
mysql-community-test-5.7.17-1.el7.x86_64.rpm
[root@mysql-2 mysql5]# yum -y install /root/mysql5/mysql-community-*.rpm    #安装mysql的所有rpm包
安装时间较长，需耐心等待一阵子～
完毕！

2.修改初始密码；

[root@mysql-2 mysql5]# systemctl start mysqld                    #开启mysql服务(mysql服务初次启动初始密码在日志中)
[root@mysql-2 mysql5]# grep password /var/log/mysqld.log 
2019-05-26T10:21:52.818781Z 1 [Note] A temporary password is generated for root@localhost: <9MAc!Xl1*oo
[root@mysql-2 mysql5]# mysql -uroot -p'<9MAc!Xl1*oo'             #使用初始密码登陆
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.17

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> alter user user() identified by "asd123...Z";            #第一步先修改密码（只有修改密码了才能做其他操作）
Query OK, 0 rows affected (0.00 sec)

mysql> exit	                              	#退出，修改配置文件，做从库设置

3.更改配置文件，开启从库设置；

[root@mysql-2 mysql5]# systemctl stop mysqld
[root@mysql-2 mysql5]# vim /etc/my.cnf
[mysqld]
server_id=94                      #在其中加入这行，开启服务器id（我这里使用的ip最后一位可以自定义多台mysql集群id别重复就行）
log_bin=slave94				      #开启binlog日志，并自定义binlog日志名（如做一个纯从库可以不用这步）
log_slave_updates                 #将slave中继日志同步到binlog日志（如做一个纯从库可以不用这步）,我打开是为了以后是否继续做主从从结构lianjie
……
：wq 保存退出
[root@mysql-2 mysql5]# systemctl restart mysqld                #重启MySQL服务

4.查看slave状态；

[root@mysql-2 mysql5]# mysql -uroot -p'asd123...Z'
mysql> show slave status\G;                   #查看slave状态,目前没有
Empty set (0.00 sec)

5.从库上配置主库信息，完成主从同步。

mysql> change master to                    #从库上配置
    -> master_host="192.168.4.93",master_user="testslave",master_password="asd123...Z",
    -> master_log_file="master93.000001",master_log_pos=605;         #对应的log日志文件名,与偏移量写主库中对应的值
Query OK, 0 rows affected, 2 warnings (0.59 sec)

mysql> start slave;        #开启slave从库模式

6.再次查看slave状态;

mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_Stat,Nginx,Tomcat需要开机自动启动,可以放到e: Waiting for master to send event
                  Master_Host: 192.168.4.93
                  Master_User: testslave
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: master93.000001
          Read_Master_Log_Pos: 154               #这里偏移量对不上,只是因为我第一次主库binlog做错了,你们按步骤走没问题
               Relay_Log_File: mysql-2-relay-bin.000002
                Relay_Log_Pos: 319
        Relay_Master_Log_File: master93.000001
             Slave_IO_Running: Yes              #IO线程 yes
            Slave_SQL_Running: Yes				#SQL线程 yes   两个线程均yes则成功
				......

7.测试主从同步效果(主库执行命令);

#主库操作
mysql> grant all on *.* to root@"%" identified by "asd123...Z";      #主库执行一个授权并创建所有地点登录的root用户
mysql> create database test;				#创建一个测试库

#从库验证
mysql> select user,host from mysql.user;    #查看user表中所有地点登录的root用户是否存在
+-----------+-----------+
| user      | host      |
+-----------+-----------+
| root      | %         |
| mysql.sys | localhost |
| root      | localhost |
+-----------+-----------+
3 rows in set (0.00 sec)

mysql> show databases;   				#查看创建的test库是否存在
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
| test               |
+--------------------+
5 rows in set (0.00 sec)
	主从同步完成!

• #客户端访问测试
  1.web主机访问MySQL数据库测试;

[root@web1 ~]# yum -y install mariadb        #简单安装一个mariadb,因为需要使用mysql命令连接数据库
[root@web1 ~]# mysql -h192.168.4.93 -uroot -p'asd123...Z'   #访问mysql主库测试能否访问
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 5.7.17-log MySQL Community Server (GPL)

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MySQL [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
| test               |
+--------------------+
5 rows in set (0.00 sec)

2.测试Nginx负载均衡是否正确;

每台主机写入一个不同内容的页面,方便测试
[root@web1 ~]# echo 192.168.4.90 nginx > /usr/local/nginx/html/index.html
[root@web1 ~]# echo tomcat 4.90 >  /usr/local/tomcat/webapps/ROOT/test.jsp 

[root@web2 ~]# echo 192.168.4.91 nginx  > /usr/local/nginx/html/index.html
[root@web2 ~]# echo tomcat 4.91 >  /usr/local/tomcat/webapps/ROOT/test.jsp

[root@web3 ~]# echo 192.168.4.92 nginx  > /usr/local/nginx/html/index.html
[root@web3 ~]# echo tomcat 4.92 >  /usr/local/tomcat/webapps/ROOT/test.jsp

[root@client ~]# curl http://192.168.4.80
192.168.4.92 nginx
[root@client ~]# curl http://192.168.4.80
192.168.4.90 nginx
[root@client ~]# curl http://192.168.4.80
192.168.4.91 nginx
[root@client ~]# curl http://192.168.4.80
192.168.4.92 nginx
[root@client ~]# curl http://192.168.4.80
192.168.4.90 nginx
[root@client ~]# curl http://192.168.4.80		
192.168.4.91 nginx
[root@client ~]# curl http://192.168.2.254/test.jsp
tomcat 4.92
[root@client ~]# curl http://192.168.2.254/test.jsp
tomcat 4.90
[root@client ~]# curl http://192.168.2.254/test.jsp
tomcat 4.91
[root@client ~]# curl -I http://192.168.2.254/mysql.php
HTTP/1.1 200 OK       #状态码200正常
Server:WindowsXP
Date: Fri, 31 May 2019 11:09:21 GMT
Content-Type: text/html
Connection: keep-alive
X-Powered-By: PHP/5.4.16
[root@client ~]# curl  http://192.168.2.254/mysql.php
Host:localhost</br>Name:root</br>Host:localhost</br>Name:mysql.sys</br>Host:%</br>Name:testslave</br>Host:%</br>Name:root</br>

#根据结果确认nginx调度正常

所有服务如需长期运行,可设置开机自动启动,mysqld,php-fpm,相应主机执行即可
Nginx与Tomcat则可以放到/etc/rc.lcoal下设置开机自动启动

[root@web1 ~]# systemctl enable php-fpm
Created symlink from /etc/systemd/system/multi-user.target.wants/php-fpm.service to /usr/lib/systemd/system/php-fpm.service.

[root@mysql-1 ~]# systemctl enable mysqld

[root@web1 ~]# vim /etc/rc.local 
/usr/local/nginx/sbin/nginx
/usr/local/tomcat/bin/startup.sh
:wq 保存
[root@web1 ~]# chmod +x /etc/rc.local 			#加执行权限,注意/etc/rc.local为/etc/rc.d/rc.local的链接的权限
[root@web1 ~]# ll /etc/rc.local                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
lrwxrwxrwx. 1 root root 13 1月  26 12:34 /etc/rc.local -> rc.d/rc.local   #

第一次写博客,感谢大家的访问,很简单的结构,有很多做得不好的地方,也希望可以跟大家交流学习一下;
也还有很多可以优化的地方,希望后续再通过博客与大家分享,共同学习.