1 Mysql安装(最费劲的就是这个)

1. 到这个页面下载文件: http://dev.mysql.com/downloads/repo/yum/

   即 http://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm

2. sudo yum localinstall 刚才下载的文件
   

3. sudo yum install mysql-community-server
   

4. 启动停止及查看状态:

   service mysqld start
   service mysqld stop
   service mysqld status
   

5. 自启动:

   chkconfig mysqld on
   

6. 设置用户密码:

   1. Stop mysql:
   systemctl stop mysqld
   
   2. Set the mySQL environment option 
   systemctl set-environment MYSQLD_OPTS="--skip-grant-tables"
   
   3. Start mysql usig the options you just set
   systemctl start mysqld
   
   4. Login as root
   mysql -u root
   
   5. Update the root user password with these mysql commands
   mysql> UPDATE mysql.user SET authentication_string=PASSWORD('showgp') WHERE User='root' AND Host='localhost';
   mysql> FLUSH PRIVILEGES;
   mysql> quit
   
   6. Stop mysql
   systemctl stop mysqld
   
   7. Unset the mySQL envitroment option so it starts normally next time
   systemctl unset-environment MYSQLD_OPTS
   
   8. Start mysql normally:
   systemctl start mysqld
   
   Try to login using your new password:
   7. mysql -u root -p
   

   安装了mysql之后提示要重设密码时的解决：

   mysql> SET PASSWORD = PASSWORD('showgp');
   

   密码不满足要求时, 设置:

   SET GLOBAL validate_password_policy=LOW;
   SET GLOBAL validate_password_length=6;
   

7. 完成...

2 Tomcat

1. 下载java:

   wget --no-cookies --no-check-certificate --header "Cookie:gpw_e24=http%3A%2F%2Fwww.oracle.com%2F;oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/8u112-b15/jdk-8u112-linux-x64.tar.gz"
   

2. 解压并配置javahome:在bashrc中写:(假设下载好了放在/opt/jdk8目录)

   export JAVA_HOME="/opt/jdk8"
   export PATH="$PATH:$JAVA_HOME/bin"
   

   然后

   source ./.bashrc
   

3. 安装Tomcat并设置:

   wget http://apache.osuosl.org/tomcat/tomcat-9/v9.0.0.M15/bin/apache-tomcat-9.0.0.M15.tar.gz
   然后解压放入/opt/tomcat9
   

   export CATALINA_HOME="/opt/tomcat9"
   

   在rc.local中设置tomcat自启动.

4. ok

3 协同

另外一台已经安装好了apache...开始配置:

在apache httpd端:

http://tomcat.apache.org/connectors-doc/webserver_howto/apache.html

http://tomcat.apache.org/connectors-doc/reference/apache.html

1. 下载mod_jk connector:

   http://apache.mirrors.tds.net/tomcat/tomcat-connectors/jk/tomcat-connectors-1.2.42-src.tar.gz
   

   编译并安装好.

   配置文件中写:

   LoadModule jk_module modules/mod_jk.so   //加载模块
   #/opt/apache24/conf
   JkWorkersFile /opt/apache24/conf/workers.properties  //worker的配置
   JkMount /wp2/* worker1   //worker的目录
   

   官方文档写的在配置文件中加入的内容:

   # Load mod_jk module
       LoadModule    jk_module  modules/mod_jk.so
       # Add the module (activate this lne for Apache 1.3)
       # AddModule     mod_jk.c
       # Where to find workers.properties
       JkWorkersFile /etc/httpd/conf/workers.properties
       # Where to put jk shared memory
       JkShmFile     /var/log/httpd/mod_jk.shm
       # Where to put jk logs
       JkLogFile     /var/log/httpd/mod_jk.log
       # Set the jk log level [debug/error/info]
       JkLogLevel    info
       # Send requests for context /examples to worker named worker1
       JkMount  /examples/* worker1
   

   这个则是对应的workers.properties文件内容:

   worker.list=worker1
   # Set properties for worker1 (ajp13)
   worker.worker1.type=ajp13
   # 如果是远程机器, 则是IP
   worker.worker1.host=localhost  
   # ajp13默认是8009端口
   worker.worker1.port=8009
   

   http://tomcat.apache.org/connectors-doc/reference/workers.html

至此简单的一个apache前端 + 一个tomcat应用服务器就搭建完成了.

使用apache服务器的地址再请求JkMount中的应用上下文名称就可以访问到后端tomcat服务器中该应用了.

后记

1. 一个worker可以对应多个JkMount中的应用(当然了...)