云服务器ECS实例手动部署Java Web环境

配置信息

云服务器：阿里云（2G 1核基础版）
操作系统：CentOS 7.4
Tomcat版本：apache-tomcat-8.5.30
JDK版本：jdk1.8.0_141
MySQL：5.7.20

安装前准备

下载JDK和Tomcat、MySQL

wget https://mirrors.aliyun.com/apache/tomcat/tomcat-8/v8.5.30/bin/apache-tomcat-8.5.30.tar.gz 
wget http://mirrors.linuxeye.com/jdk/jdk-8u141-linux-x64.tar.gz 
wget http://repo.mysql.com/mysql57-community-release-el7-8.noarch.rpm

安装JDK

1.新建目录

mkdir /usr/jdk

2.解压 jdk-8u141-linux-x64.tar.gz 到 /usr/jdk

tar xzf jdk-8u141-linux-x64.tar.gz -C /usr/jdk

3.设置环境变量

i.编辑/ect/profile

 vi /etc/profile 

ii.按i进入编辑模式
iii.在/etc/profile文件中尾部插入以下信息：

#set java environment
JAVA_HOME=/usr/jdk/jdk1.8.0_141
export CLASSPATH=.:$JAVA_HOME/lib
export PATH=$JAVA_HOME/bin:$PATH

jre参考这个

export JAVA_HOME=/usr/java/jdk/jdk1.8.0_151
export JRE_HOME=/usr/java/jdk/jdk1.8.0_151/jre
export CLASSPATH=.:$JAVA_HOME/lib$:JRE_HOME/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin/$JAVA_HOME:$PATH

iv.按esc退出编辑模式，输入:wq保存并关闭文件

4.加载环境变量：source /etc/profile

5.查看JDK版本：java -version如果出现版本信息，则说明JDK安装成功

安装Tomcat

1.依次输入以下命令解压tomcat包到指定目录

tar xzf apache-tomcat-8.5.30.tar.gz -C /opt 

2.创建链接

ln -s /opt/apache-tomcat-8.5.30 /opt/tomcat 

3.启动Tomcat

/opt/tomcat/bin/startup.sh 

查看tomcat启动信息

tail -f /opt/tomcat/logs/catalina.out 

4.添加云服务器ECS安全组规则放行8080端口

5.设置开启自动启动 vim /etc/rc.local

插入以下代码

export JAVA_HOME=/usr/jdk/jdk1.8.0_141

/opt/tomcat/bin/startup.sh start

6.访问http://ip地址:8080出现tomcat页面即可

安装MySQL

1.安装MySQL

rpm -ivh mysql57-community-release-el7-8.noarch.rpm 

2.安装MySQL服务

yum -y install mysql-server 

Linux CenterOs 64位中安装 MySQL-server-5.5.25a-1.rhel5.x86_64.rpm 出现以下错误
[root@localhost upload]# rpm -ivh MySQL-server-5.5.25a-1.rhel5.x86_64.rpm
error: Failed dependencies:
libaio.so.1()(64bit) is needed by MySQL-server-5.5.25a-1.rhel5.x86_64
libaio.so.1(LIBAIO_0.1)(64bit) is needed by MySQL-server-5.5.25a-1.rhel5.x86_64
libaio.so.1(LIBAIO_0.4)(64bit) is needed by MySQL-server-5.5.25a-1.rhel5.x86_64
从以上错误信息可以看出是因为缺少库libaio，所以需要安装libaio

3.安装成功后可以对mysql进行一些设置

（1）开机自启：systemctl enable mysqld
（2）启动mysql：systemctl start mysqld
（3）重置密码：mysql_secure_installation

# systemctl start mysqld
# systemctl enable mysqld 
# systemctl daemon-reload

4.修改my.cnf vim /etc/my.cnf

 [mysqld]  
#  
# Remove leading # and set to the amount of RAM for the most important data  
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.  
# innodb_buffer_pool_size = 128M  
#  
# Remove leading # to turn on a very important data integrity option: logging  
# changes to the binary log between backups.  
# log_bin  
#  
# Remove leading # to set options mainly useful for reporting servers.  
# The server defaults are faster for transactions and fast SELECTs.  
# Adjust sizes as needed, experiment to find the optimal values.  
# join_buffer_size = 128M  
# sort_buffer_size = 2M  
# read_rnd_buffer_size = 2M  
datadir=/var/lib/mysql  
socket=/var/lib/mysql/mysql.sock  
server_id = 1  
expire_logs_days = 3  

# Disabling symbolic-links is recommended to prevent assorted security risks  
symbolic-links=0  

log-error=/var/log/mysqld.log  
pid-file=/var/run/mysqld/mysqld.pid

5.启动MySQL service mysqld restart

查看MySQL中password相关的日志，获得初始密码 grep "password" /var/log/mysqld.log

[Note] A temporary password is generated for root@localhost: &fapv6lzHsWQ

上述&fapv6lzHsWQ便是初始密码

6.登录MySQL并修改密码

mysql -u root -p接着输入初始密码即可登录
重置密码 alter user 'root'@'localhost' identified by 'Password123';

• Password123便是密码，默认配置下要求长度至少8位

7.刷新权限 flush privileges

8.设定root用户指定任意IP登录

grant all on *.* to 'root'@'%' identified by 'Root@@' with grant option; 

• %为任意，如指定IP，则替换此处

9.添加云服务器ECS安全组规则放行3306端口，以便于使用远程数据库连接工具连接

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参考 https://blog.csdn.net/qq_38736310/article/details/79904924?utm_source=copy