centos配置meysql,tomcat环境步骤详解

安装JAVA环境

1.下载JDK： http://www.or*a**cle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

2.将JDK文件上传到服务器的/usr/local/download目录下

上传命令： scp jdk-8u111-linux-x64.rpm root@:/usr/local/download

3.安装jdk

命令：rpm -ivh jdk-8u111-linux-x64.rpm

4.安装MySQL

下载
wget http://dev.**m*ysql.com/get/mysql-community-release-el7-5.noarch.rpm
安装：

添加 MySQL Yum Repository

yum localinstall mysql-community-release-el7-5.noarch.rpm

验证下是否添加成功
yum repolist enabled | grep "mysql.*-community.*"
- 选择要启用 MySQL 版本
yum repolist all | grep mysql

可以看到 5.5， 5.7 版本是默认禁用的，因为现在最新的稳定版是 5.6

[root@bogon software]# yum repolist all | grep mysql
mysql-connectors-community/x86_64 MySQL Connectors Community 启用: 14
mysql-connectors-community-source MySQL Connectors Community - Sourc 禁用
mysql-tools-community/x86_64 MySQL Tools Community 启用: 17
mysql-tools-community-source MySQL Tools Community - Source 禁用
mysql55-community/x86_64 MySQL 5.5 Community Server 禁用
mysql55-community-source MySQL 5.5 Community Server - Sourc 禁用
mysql56-community/x86_64 MySQL 5.6 Community Server 启用: 139
mysql56-community-source MySQL 5.6 Community Server - Sourc 禁用
mysql57-community-dmr/x86_64 MySQL 5.7 Community Server Develop 禁用
mysql57-community-dmr-source MySQL 5.7 Community Server Develop 禁用

```
- 可以通过类似下面的语句来启动某些版本
```
yum-config-manager --disable mysql56-community
yum-config-manager --enable mysql57-community-dmr
```

注意： 任何时候，只能启用一个版本。

- 查看当前的启动的 MySQL 版本

```
yum repolist enabled | grep mysql

[root@bogon software]# yum repolist enabled | grep mysql
mysql-connectors-community/x86_64 MySQL Connectors Community 14
mysql-tools-community/x86_64 MySQL Tools Community 17
mysql56-community/x86_64 MySQL 5.6 Community Server 139

```

## 通过 Yum 来安装 MySQL
yum install mysql-community-server

Yum 会自动处理 MySQL 与其他组件的依赖关系：

- 执行
rpm -qi mysql-community-server.x86_64 0:5.6.24-3.el7

## 启动和关闭 MySQL Server

1 启动 MySQL Server

systemctl start mysqld

2 查看 MySQL Server 状态

systemctl status mysqld

3 关闭 MySQL Server

systemctl stop mysqld

4. 测试是否安装成功

mysql

## 防火墙设置

1. 远程访问 MySQL， 需开放默认端口号 3306.

- firewall-cmd
firewall-cmd --permanent --zone=public --add-port=3306/tcp

firewall-cmd --permanent --zone=public --add-port=3306/udp

使最新的防火墙设置规则生效。

firewall-cmd --reload

## 开机自起

1. 查看 MySQL 服务是否开机启动

[root@localhost ~]# systemctl is-enabled mysql.service;echo $?

enabled
0

如果是 enabled 则说明是开机自动，如果不是，执行
chkconfig --levels 235 mysqld on

## 设置字符集

修改 /etc/my.cnf 文件，添加字符集的设置
[mysqld]

character set server = utf8

[mysql] default-character-set = utf8

重启 MySQL ,可以看到字符集已经修改了
mysql> SHOW VARIABLES LIKE 'character%'

-> ; +--------------------------+----------------------------+ | Variable name | Value | +--------------------------+----------------------------+ | character set client | utf8 | | character set connection | utf8 | | character set database | utf8 | | character set filesystem | binary | | character set results | utf8 | | character set server | utf8 | | character set system | utf8 | | character sets_dir | /usr/share/mysql/charsets/ | +--------------------------+----------------------------+ 8 rows in set (0.00 sec)

# 安装tomcat

1.下载tomcat http://tomcat.apac***he.org/

2. 将tomcat文件上传到服务器，并解压
scp apache-tomcat-9.0.0.M11.zip [email protected]:/usr/local/download

如果没有安装unzip命令，先安装 yum install unzip

解压tomcat并重命名

unzip apache-tomcat-9.0.0.M11.zip mv apache-tomcat-9.0.0.M11.zip ../tomcat

3.启动端口号 8080
firewall-cmd --zone=public --add-port=8080/tcp --permanent

命令含义：

--zone #作用域

--add-port=80/tcp #添加端口，格式为：端口/通讯协议

--permanent #永久生效，没有此参数重启后失效

//重启防火墙 firewall-cmd --reload

出现firewalld is not running的报错，用以下命令将firewalld起起来即可

systemctl start firewalld

systemctl enable firewalld

4.启动tomcat
进入到tomcat的bin目录，修改所有后缀名为.sh的权限

cd /usr/local/tomcat/bin

chmod u+x *.sh

//启动tomcat服务 ./startup.sh

//停止tomcat服务 ./shutdown.sh

```