使用Linux的一些实用点

#停止防火墙
systemctl stop firewalld
#禁用防火墙开机启动
systemctl disable firewalld
#停止网络管理器
systemctl stop NetworkManager
#禁止开机自启
systemctl disable NetworkManager

#解压jdk
tar -zxvf jdk-8u171-linux-x64.tar.gz -C /usr/local
#配置jdk的环境变量
echo ‘JAVA_HOME=/usr/local/jdk1.8.0_171’ >> /etc/profile
echo ‘PATH= J A V A H O M E / b i n : JAVA_HOME/bin: JAVAH​OME/bin:PATH’ >> /etc/profile
#重新加载文件
source /etc/profile
#查看jdk版本
java -version

#解压tomcat
tar -zxvf apache-tomcat-7.0.57.tar.gz -C /usr/local

#卸载mariadb数据库
rpm -e --nodeps rpm -qa | grep mariadb

#创建文件夹
mkdir /usr/local/mysql
#解压mysql
tar -zxvf mysql-5.7.25-1.el7.x86_64.rpm-bundle.tar.gz -C /usr/local/mysql
#安装依赖环境
yum install -y net-tools perl libaio openssl gcc pcre-devel zlib-devel openssl vim openssl-devel
#安装mysql
rpm -ivh /usr/local/mysql/mysql-community-common-5.7.25-1.el7.x86_64.rpm
rpm -ivh /usr/local/mysql/mysql-community-libs-5.7.25-1.el7.x86_64.rpm
rpm -ivh /usr/local/mysql/mysql-community-devel-5.7.25-1.el7.x86_64.rpm
rpm -ivh /usr/local/mysql/mysql-community-libs-compat-5.7.25-1.el7.x86_64.rpm
rpm -ivh /usr/local/mysql/mysql-community-client-5.7.25-1.el7.x86_64.rpm
rpm -ivh /usr/local/mysql/mysql-community-server-5.7.25-1.el7.x86_64.rpm
#开启mysql服务
systemctl start mysqld
#查看临时密码
cat /var/log/mysqld.log | grep password

#登录数据库
mysql -uroot -p

set global validate_password_length=4;
set global validate_password_policy=LOW;
set password = password('root');
grant all on *.* to 'root'@'%' identified by 'root';
flush privileges;

#修改MySQL编码
vim /etc/my.cnf

[client]
default_character_set=utf8

[mysql]
default_character_set=utf8

[mysqld]
character_set_server=utf8

#重启服务
systemctl restart mysqld

#查看数据库编码
mysql -uroot -proot -e “show variables like ‘%char%’;”

#安装git
yum install -y git

#解压maven
tar -zxvf apache-maven-3.5.4-bin.tar.gz -C /usr/local
#配置maven环境变量
echo ‘MAVEN_HOME=/usr/local/apache-maven-3.5.4’ >> /etc/profile
echo ‘PATH= M A V E N H O M E / b i n : MAVEN_HOME/bin: MAVENH​OME/bin:PATH’ >> /etc/profile
#重新加载文件
source /etc/profile
#查看maven版本
mvn -v
#删除settings文件
rm -rf /usr/local/apache-maven-3.5.4/conf/settings.xml
#拷贝settings文件
cp /root/settings.xml /usr/local/apache-maven-3.5.4/conf/settings.xml
#本地仓库
mv /root/repo /usr/local

#修改静态IP
vim /etc/sysconfig/network-scripts/ifcfg-ens32

BOOTPROTO=static
IPADDR=192.168.100.100
GATEWAY=192.168.100.2
NETMASK=255.255.255.0
DNS1=8.8.8.8

#重启网卡
systemctl restart network