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虚拟机linux常用NAT网络模式,通过主机访问网络。(桥接为直连路由器外网,安全不可控)
创建文件夹mkdir xzp
删除文件夹rmdir xzp
查看文件夹:ls
创建文件:touch 1.txt
查看文件:VI 1.txt 编辑模式:a或o 保存并退出:Esc→Shift+:→ wq 不保存退出:Esc→Shift+:→ q!
切换用su - root ,su - peter
用户新增删除、权限:有流程
运维
目标主机启动的端口:netstat -tuln (命令安装:sudo dnf install net-tools -y)
开放端口
firewall-cmd --zone=public --add-port=8888/tcp --permanent # 永久添加规则
firewall-cmd --reload # 重载配置
firewall-cmd --list-ports # 验证端口开放
验证端口开放性:nc -zv 192.168.40.168 5000(命令安装sudo dnf install nmap-ncat -y)
centos 7和8的差别:https://blog.csdn.net/seaship/article/details/109292307
系统安装:
CentOS8设置网络镜像安装源:mirrors.aliyun.com/centos/8/BaseOS/x86_64/os(https://developer.aliyun.com/article/1471190)
设置静态Ip :
CentOS7-8 有流程:vi /etc/sysconfig/network-scripts/ifcfg-ens160 重启配置:service network restart
CentOS9:https://cloud.tencent.com/developer/article/2224886
配置镜像源
centos stream 8:设置 镜像源
sudo curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo
centos stream 9设置 镜像源
编辑源配置文件:
sudo vi /etc/yum.repos.d/CentOS-Stream.repo
下载镜像源:
sudo curl -o /etc/yum.repos.d/CentOS-Stream.repo https:
替换为以下内容(覆盖原有配置):
应用:
Centos7.6 支持到.net7.6 。 .net 8910 Centos Strearm 8 才支持
1、安装 wget:yum install wget
2、配置dns服务器
echo “nameserver 8.8.8.8” | sudo tee /etc/resolv.conf
echo “nameserver 114.114.114.114” | sudo tee /etc/resolv.conf
重启dns: sudo systemctl restart NetworkManager
测试:ping mirrors.aliyun.com
3、安装.Net 8:
sudo dnf install dotnet-sdk-8.0
问题
1、服务启动报数据库连接握手协议ssl和TSL v1.0 v1.2 v1.3的问题
Unhandled exception. Microsoft.Data.SqlClient.SqlException (0x80131904): A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: TCP Provider, error: 35 - An internal exception was caught) ---> System.Security.Authentication.AuthenticationException: Authentication failed, see inner exception. ---> Interop+OpenSsl+SslException: SSL Handshake failed with OpenSSL error - SSL_ERROR_SSL. ---> Interop+Crypto+OpenSslCryptographicException: error:0A000102:SSL routines::unsupported protocol
解决办法:配置openssl: https://cloud.tencent.com/developer/article/1816990
2.centos7.6安装.NET 8.0 报错
./YoloApp: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by ./YoloApp) ./YoloApp: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by ./YoloApp)解决方法:https://cloud.tencent.com/developer/article/2510366
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