服务器连接

1.连接服务器

Ssh root@服务器地址连接远程服务器
Uname -a显示服务器信息
log out 退出服务器

2.web服务器

nginx
apache
tomcat php

2.1 安装nginx

yum install nginx

2.2 配置服务器

user nginx -> user root
http server location

nginx -t

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

vim /etc/nginx/nginx.conf

image.png

:set nu vim模式下出现行号

3. 上传服务到服务器

使用scp命令scp -r ./* root@ip:/root/www
服务器端和本地都要有scpyum install openssh-cli

ps -ef | grep nginx查看一下当前再跑的进程

image.png

nginx -c /etc/nginx/nginx.conf如果下面那句话报错
nginx -s stop把nginx停止
nginx运行nginx

3.出问题了

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
SHA256:NHg/pDwRdtQThZzY3Z4Uwq/Rz93FgmL3UdBAFleWFWk.
Please contact your system administrator.
Add correct host key in /Users/yuanting/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /Users/yuanting/.ssh/known_hosts:102
ECDSA host key for 192.168.198.190 has changed and you have requested strict checking.
Host key verification failed.

因为服务器的ip发生变更了
第一次SSH连接时，会生成一个认证，储存在客户端（也就是用SSH连线其他电脑的那个，自己操作的那个）中的known_hosts，但是如果服务器验证过了，认证资讯当然也会更改，服务器端与客户端不同时，就会跳出错误啦。

解决办法：删除留存的秘钥

输入命令：ssh-keygen -R +输入服务器的IP
例如：
 ~  ssh-keygen -R 192.168.198.147                                                                                                                                                                ✔
# Host 192.168.198.147 found: line 36
/Users/renwoxing/.ssh/known_hosts updated.

转：https://blog.csdn.net/qq_21127151/article/details/105237218