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dw怎么设计网页,北京优化推广,室内设计就业前景如何,在哪家网站做推广好centos7 在线安装jdk1.8 yum install -y java-1.8.0-openjdk.x86_64 java默认安装路径/usr/lib/jvm/； 加入环境变量配置，在/etc/profile 配置文件中加入 java 环境变量： vim /etc/profile #java 环境变量内容： #java环境变量…

centos7

在线安装jdk1.8

yum install -y java-1.8.0-openjdk.x86_64
java默认安装路径/usr/lib/jvm/；
加入环境变量配置，在/etc/profile 配置文件中加入 java 环境变量：
vim /etc/profile

#java 环境变量内容：

#java环境变量
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.362.b08-1.el7_9.x86_64
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/jre/lib/rt.jar
export PATH=$PATH:$JAVA_HOME/bin
source /etc/profile
java -version

安装tomcat

yum -y install tomcat
#进入/etc/profile 配置文件
vim /etc/profile

#Tomcat 环境变量内容：

#tomcat环境变量
COMCAT_BASE=/usr/share/tomcat
COMCAT_HOME=/usr/share/tomcat
export JAVA_HOME PATH CLASSPATH COMCAT_BASE COMCAT_HOME
source /etc/profile
systemctl start tomcat.service
systemctl status tomcat

systemctl status firewalld

#执行命令来开启8080端口
firewall-cmd --permanent --zone=public --add-port=8080/tcp

#重启防火墙
firewall-cmd --reload

#验证开启的8080端口是否生效
firewall-cmd --zone=public --query-port=8080/tcp
解决FirewallD警告问题
vi /etc/firewalld/firewalld.conf
#重启tomcat:
systemctl restart tomcat

#查看tomcat状态：
systemctl status tomcat
尝试解决打不开8080的问题
#下载依赖包
yum install tomcat-webapps tomcat-admin-webapps

#关闭防火墙 
systemctl stop firewalld

#查看防火墙状态
systemctl status firewalld
#Tomcat的自启动
systemctl enable tomcat.service

#系统重启
reboot

mysql8

#下载mysql8.0的rpm仓库源
wget https://repo.mysql.com/mysql80-community-release-el7.rpm

#安装mysql8.0源
yum -y install ./mysql80-community-release-el7.rpm

#生成yum索引缓存，并查看目录大小
yum makecache fast

#查看正在使用的MySQL repo
yum repolist all|grep mysql

#安装MySQL8.0
yum install -y mysql-community-common mysql-community-libs mysql-community-libs-compat mysql-community-client mysql-community-server

#设置 mysql 开机启动
systemctl enable mysqld

#启动mysql
systemctl start mysqld

cat /var/log/mysqld.log | grep password

mysql_secure_installation

#随机密码登录
mysql -uroot -p


#先把root的旧密码置空
use mysql;
#备注：Mysql5.7+ password字段 已改成 authentication_string字段
update user set authentication_string='' where user='root';

#重置成新密码
#备注：Mysql8.0修改密码方式已有变化（此处是个坑，需要注意）

#Mysql8.0之前;
update user set password=password('root') where user='root';
#Mysql8.0之后；
alter user 'root'@'localhost' identified by 'root';

#显示密码策略
SHOW VARIABLES LIKE 'validate_password%';
#校验密码不能等同于用户名
set global validate_password.check_user_name=OFF;
#设置最低长度为4
set global validate_password.length=4;
#校验设置低级别策略
set global validate_password.policy=LOW;

#显示密码策略
SHOW VARIABLES LIKE 'validate_password%';


#设置完密码策略后重新输入修改命令，更改后的密码为123456
alter user 'root'@'localhost' identified by '123456';

#退出命令行
mysql> quit;
Bye

#新密码登录
mysql -uroot -p123456


#停止服务
systemctl stop mysqld
#重启服务
systemctl restart mysqld
#查看mysql服务
systemctl status mysqld

nginx

yum install yum-utils
#新建nginx.repo
vim /etc/yum.repos.d/nginx.repo

#nginx.repo内容
[nginx-stable]
name=nginx stable repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
gpgcheck=1
enabled=1
gpgkey=https://nginx.org/keys/nginx_signing.key
module_hotfixes=true

[nginx-mainline]
name=nginx mainline repo
baseurl=http://nginx.org/packages/mainline/centos/$releasever/$basearch/
gpgcheck=1
enabled=0
gpgkey=https://nginx.org/keys/nginx_signing.key
module_hotfixes=true
yum-config-manager --enable nginx-mainline

yum install -y nginx

systemctl start nginx.service

systemctl status nginx

#查看防火墙状态
systemctl status firewalld

#执行命令来开启80端口
firewall-cmd --permanent --zone=public --add-port=80/tcp

#重启防火墙
firewall-cmd --reload

#验证开启的8080端口是否生效
firewall-cmd --zone=public --query-port=80/tcp

systemctl enable nginx.service

docker

一、安装依赖包

[root@localhost ~]# yum install -y yum-utils device-mapper-persistent-data lvm2

二、设置yum仓库地址

[root@localhost ~]# sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

[root@localhost ~]# sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

三、更新Yum缓存

[root@localhost ~]# sudo yum makecache fast

四、在线安装docker

[root@localhost ~]# sudo yum install -y docker-ce docker-ce-cli containerd.io

五、查看docker信息

[root@localhost ~]# docker info

Client:

Context: default

Debug Mode: false

Plugins:

app: Docker App (Docker Inc., v0.9.1-beta3)

buildx: Docker Buildx (Docker Inc., v0.10.0-docker)

scan: Docker Scan (Docker Inc., v0.23.0)

Server:

ERROR: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

docker尚未启动，报错

六、启动docker

[root@localhost ~]# systemctl start docker

七、docker状态

[root@localhost ~]# systemctl status docker

docker.service - Docker Application Container Engine

Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)

Active: active (running) since 四 2023-01-26 19:24:36 CST; 12s ago

Docs: https://docs.docker.com

Main PID: 6284 (dockerd)

Tasks: 8

Memory: 108.1M

CGroup: /system.slice/docker.service

└─6284 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

八、docker开机启动

[root@localhost ~]# systemctl enable docker

九、修改镜像默认存储路径

查看当前存储路径

[root@localhost /]# docker info | grep "Docker Root Dir"

Docker Root Dir: /var/lib/docker

创建新路径

[root@localhost docker]# mkdir -p /data/docker

停止服务

[root@localhost /]# systemctl stop docker

Warning: Stopping docker.service, but it can still be activated by:

docker.socket

[root@localhost /]# systemctl stop docker.socket

reload配置文件

[root@localhost /]# systemctl daemon-reload

重启服务

[root@localhost /]# systemctl restart docker.service

查看本地镜像存储修改结果

[root@localhost /]# docker info | grep "Docker"

app: Docker App (Docker Inc., v0.9.1-beta3)

buildx: Docker Buildx (Docker Inc., v0.10.0-docker)

scan: Docker Scan (Docker Inc., v0.23.0)

Docker Root Dir: /data/docker