Centos7 java tomcat mysql 初始化配置

wget http://download.oracle.com/otn-pub/java/jdk/8u161-b12/2f38c3b165be4555a1fa6e98c45e0808/server-jre-8u161-linux-x64.tar.gz?AuthParam=1516599912_93bc64af4d01743f92f2e49de0cf83f1[/code] 2、解压并移至指定目录。

mv jdk1.8.0_161/ /usr/local/

3、配置环境变量：

vi /etc/profile

#jre env

export JRE_HOME=/usr/local/jdk1.8.0_161/jre
export CLASSPATH=$JRE_HOME/lib/rt.jar:$JRE_HOME/lib/ext
export PATH=$PATH:$JRE_HOME/bin

source /etc/profile

java -version

4. 安装tomcat
wget http://mirrors.hust.edu.cn/apache/tomcat/tomcat-8/v8.5.24/bin/apache-tomcat-8.5.24.tar.gz tar -zxvf apache-tomcat-8.5.24.tar.gz
mv apache-tomcat-8.5.24 /usr/local/

wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.21-1.el7.x86_64.rpm-bundle.tar[/code] 
rpm -qa|grep mariadb




rpm -e mariadb-libs-5.5.56-2.el7.x86_64 --nodeps

tar -xvf mysql-5.7.21-1.el7.x86_64.rpm-bundle.tar

rpm -ivh mysql-community-common-5.7.21-1.el7.x86_64.rpm




rpm -ivh mysql-community-libs-5.7.21-1.el7.x86_64.rpm




rpm -ivh mysql-community-client-5.7.21-1.el7.x86_64.rpm




rpm -ivh mysql-community-server-5.7.21-1.el7.x86_64.rpm

出现如下错误，缺少libaio依赖：



运行：
yum install libaio




rpm -ivh mysql-community-server-5.7.21-1.el7.x86_64.rpm



mysqld --initialize


service mysqld start

若出现错误，查看 /var/lib/下 文件读写权限：


 
chown -R root mysql
 ……
 chmod -R 777 mysql
 ……

查看临时密码：


mysql -u root -p




登录mysql，提示：
You must reset your password using ALTER USER statement before executing


step 1: SET PASSWORD = PASSWORD(‘your new password‘);

step 2: ALTER USER ‘root‘@‘localhost‘ PASSWORD EXPIRE NEVER;

step 3: flush privileges;

重新登录，创建用户并授权：

use mysql

CREATE USER 'xxxxxx'@'localhost' IDENTIFIED BY 'xxxxxx';

grant all privileges to 'xxxxxx'@'localhost'

flush privileges;