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SSH密钥登录

[不指定 2023/06/03 11:30 | by 刘新修 ]

 ### 本地机器生成密钥

ssh-keygen -t rsa
 
[root@localhost ~]# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): 
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /root/.ssh/id_rsa
Your public key has been saved in /root/.ssh/id_rsa.pub
The key fingerprint is:
SHA256:PeMmQH0e2HL+jxZjYJ6/8Hej+ANJ06gm+sUIhzCLNho root@localhost
The key's randomart image is:
+---[RSA 3072]----+
|                 |
|       . o       |
|   o  . + = o    |
|  . +..  Bo= .   |
|E+ . o..SoOoo    |
|o..   ooo+o*+    |
|.     ..+o+ooo   |
|     .  .o o++...|
|      ..   o==+..|
+----[SHA256]-----+
[root@localhost ~]# 
 
进入主机A ~/.ssh/ 目录，会发现生成了一对密钥
Your identification has been saved in /home/test/.ssh/id_rsa.
Your public key has been saved in /home/test/.ssh/id_rsa.pub.
 
### A将公钥文件中的内容复制到 ==> 远程服务器端B
~/.ssh/id_rsa.pub
~/.ssh/authorized_keys
 
## 步骤如下
[root@localhost .ssh]# pwd
/root/.ssh
[root@localhost .ssh]# ll
total 12
-rw------- 1 root root 891 Jun  1 14:52 id_rsa
-rw-r--r-- 1 root root 228 Jun  1 14:52 id_rsa.pub
-rw-r--r-- 1 root root 172 Jun  1 22:28 known_hosts
[root@localhost .ssh]# vi /root/.ssh/authorized_keys
 
### 粘贴id_rsa.pub内的字符串到这个文件,对于OpenSSH来说，我们需要将公钥加入到~/.ssh/authorized_keys中。每个公钥一行，千万注意不要换行，否则可能不能正常工作。
### 修改文件权限
chmod 600 /root/.ssh/authorized_keys
 
 
### 修改/etc/ssh/sshd_config 文件
修改/etc/ssh/sshd_config 文件，将RSAAuthentication 和 PubkeyAuthentication 后面的值都改成yes
将PasswordAuthentication yes 修改成 PasswordAuthentication no
 
### 重启SSHD
/etc/init.d/sshd restart
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docker对已经启动的容器添加目录映射(挂载目录)

[不指定 2023/06/03 11:27 | by 刘新修 ]

查看某个容器的详细信息

docker inspect 657f23bba0c6

进入默认容器的配置文件目录

C#代码
  1. cd /var/lib/docker/containers/657f23bba0c6ddc002c0b2f57c23edd36be742f9777f5ed9b755538085c419b0  

我们将要修改的文件就是config.v2.json和hostconfig.json

修改config.v2.json

调出冒号命令，输入如下（这里注意，shift+：），%!python -m json.tool

====================================

C#代码
  1. "MountPoints": {  
  2.     ...,  
  3.     "/data/rsync": {  
  4.         "Destination": "/data/rsync",  
  5.         "Driver": "",  
  6.         "Name": "",  
  7.         "Propagation": "rprivate",  
  8.         "RW": true,  
  9.         "SkipMountpointCreation": false,  
  10.         "Source": "/data/apps/rsync",  
  11.         "Spec": {  
  12.             "Source": "/data/apps/rsync",  
  13.             "Target": "/data/rsync",  
  14.             "Type": "bind"  
  15.         },  
  16.         "Type": "bind"  
  17.     }  
  18. }  

 

修改hostconfig.json

调出冒号命令，输入如下（这里注意，shift+：），%!python -m json.tool

C#代码
  1. "AutoRemove": false,  
  2. "Binds": [  
  3.     "/data/apps/nginx/htdocs:/data/nginx/htdocs",  
  4.     "/data/apps/redis/htdocs:/data/redis/htdocs",  
  5.     "/data/apps/nodejs/htdocs/nest/other:/data/nodejs/htdocs/nest/other",  
  6.     "/data/apps/nodejs/htdocs/nest/do_nest/public/www:/data/nodejs/htdocs/nest/do_nest/public/www",  
  7.     "/data/apps/nodejs/htdocs/nest/KTM/dist:/data/nodejs/htdocs/nest/KTM/dist",  
  8.     "/data/apps/nodejs/htdocs/nest/KTM/public:/data/nodejs/htdocs/nest/KTM/public",  
  9.     "/data/apps/rsync:/data/rsync"  
  10. ],  

 先关闭docker服务

C#代码
  1. systemctl start docker  
  2. systemctl stop docker  
  3. systemctl stop docker.socket  
  4. systemctl enable docker.service  

 

 
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rsync 常用的同步命令

[不指定 2023/06/03 11:12 | by 刘新修 ]
C++代码
  1. ### 由本地向服务器推送  
  2. rsync -avz --port=8730 dist.tar.gz liuxinxiu@127.0.0.1::test  
  3. rsync -avzP --port=8730 dist.tar.gz dynamicAssets.json jenkins@172.16.207.22::work-litigation  
  4.   
  5.   
  6. ### 由服务器向本地下载  
  7. rsync -avz liuxinxiu@127.0.0.1::test /test/111  
  8. rsync -avz jenkins@172.16.207.22::work-litigation /var/www/html/mirrors/frontend/injured/work-litigation  
  9.   
  10.   
  11. ### 创建软连接(前边是存储源——后边是软链接)  
  12. ln -s /data/apps/rsync/www/release /data/apps/nginx/htdocs/release  

 以下是具体是例子：

C#代码
  1. ### 由本地向服务器推送  
  2. cd /data/apps/nginx/htdocs/$projectPath/upload  
  3. rsync -avzP --port=8730 dist.tar.gz dynamicAssets.json jenkins@172.16.207.22::$las_dir  
  4.  
  5.  
  6.  ### 由本地向服务器推送  
  7. cd /data/apps/nginx/htdocs/$projectPath/upload  
  8. rsync -avzP --port=8730 dist.tar.gz dynamicAssets.json jenkins@172.16.207.22::release/$projectPath &&  
  9. cd /data/apps/rsync/www/release/$lat_dir &&  
  10. scp -r $pat_dir root@10.10.9.99:/var/www/html/mirrors/frontend/$pat_dir &&  
  11. curl http://10.10.9.99/frontend/$projectPath  

 

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mysql 新建用户并授权 & 更新用户密码

[不指定 2023/02/23 10:35 | by 刘新修 ]
SQL代码
  1. insert into mysql.user(Host,User,Password) values ("%","admin",password("cnmo"));  
  2.   
  3. CREATE USER 'admin'@'localhost' IDENTIFIED BY 'cnmo';  
  4. GRANT privileges ON *.* TO 'admin'@'localhost';  
  5. GRANT ALL privileges on *.* to 'admin'@'localhost' identified by 'cnmo';  
  6. FLUSH PRIVILEGES;  

 更新用户密码

SQL代码
  1. use mysql # 连接权限数据库  
  2. update user set password=password('521') where user='root' and host='localhost'; # 改密码  
  3. flush privileges; # 刷新权限  

 

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[MySQL] 注意MySQL5.1不支持utf8mb4 Error 1115: Unknown character set: 'utf8mb4'

[不指定 2023/02/23 08:48 | by 刘新修 ]

 MYSQL5.5支持utf8mb4，MYSQL5.1并不支持“utf8mb4”。

当连接数据库时 , 如果指定了utf8mb4 , 那么会出现的错误代码为：

Error 1115: Unknown character set: 'utf8mb4'

会出现utf8mb4不兼容的情况。

 

所以如果想使用utf8mb4存储表情emoji字符 , 请尽快升级

Tags:
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[Linux] 解决secureCRT 登录 Rocky Linux 9.1 报错 No compatible hostkey. The server supports these methods: rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519

[不指定 2022/11/28 15:18 | by 刘新修 ]

 

C#代码
  1. Key exchange failed. No compatible key exchange method. The server supports these methods: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512  
  2. No compatible hostkey. The server supports these methods: rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519  

1、通过web管理终端登录系统

 

编辑/etc/ssh/sshd_config

在最下面新增

C#代码
    • KexAlgorithms diffie-hellman-group1-sha1,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group-exchange-sha256,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group1-sha1,curve25519-sha256@libssh.org

2、重启sshd服务

 

systemctl restart sshd

Tags: , ,
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Rocky Linux-8.6 Docker安装

[不指定 2022/11/28 08:27 | by 刘新修 ]
C#代码
  1. yum install -y yum-utils device-mapper-persistent-data lvm2  
  2. yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo  
  3. yum install docker-ce -y --allowerasing  
  4. systemctl start docker  
  5. systemctl enable docker  
 
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Nodejs搭建简单的websocket服务

[不指定 2022/11/23 14:11 | by 刘新修 ]
const ws = require("nodejs-websocket");

const PORT = 3002;
let server = ws.createServer((conn) => {
    console.log('连接成功');

    /*** 错误处理 ***/
    conn.on("error", ()=> {
        console.log("error");
    })

    /*** 关闭处理 ***/
    conn.on("close", ()=> {
        console.log("连接关闭");
    })

    /*** 业务逻辑 ***/
    conn.on("text", (data)=> {
        conn.send(`后端对数据处理并返回 ${data.toUpperCase()}`)
    })

});

server.listen(PORT, ()=> {
    console.log("服务器启动成功，监听了端口: " + PORT)
});
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一款移动端页面自适应布局解决方案

[不指定 2021/11/08 14:31 | by 刘新修 ]

安装命令：npm install flexlibs -D

===============

以Vue3.0 为例，在mian.js中引入：

JavaScript代码
  1. // 设自适应插件库  
  2. import 'flexible'  

 

刷新页面后，根据用户移动端设备，自动动态计算网页需要适配基数
 
以Iphone6/7/8 【宽度375】的移动终端，以这个类型终端在我们经历过的项目中，为最低适配终端，设计稿就以此为基础w*2 (375*2) = 750px ，实际基数如果为1就是100%（375rem）目前基数为100 错2位小数即刻，3.75rem为整屏的宽度~
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安装docker成功后，启动docker报错，解决方法

[不指定 2020/10/15 14:37 | by 刘新修 ]

安装了docker 因服务器从公网(192.168.50.60)机房迁移到内网(192.168.190.60)，更改了IP地址，环境就运行不起来了~

输什么命令错误都是：

 

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

启动docker后执行 systemctl status docker 出现了异常，具体如下：
[root@joinApp2 ~]# systemctl status docker.service
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
Active: failed (Result: start-limit) since Thu 2016-02-25 17:26:11 CST; 16s ago
Docs:
http://docs.docker.com Process: 16384 ExecStart=/usr/bin/docker daemon $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY (code=exited, status=1/FAILURE)
Main PID: 16384 (code=exited, status=1/FAILURE)

Feb 25 17:26:10 joinApp2 systemd[1]: Failed to start Docker Application Container Engine.
Feb 25 17:26:10 joinApp2 systemd[1]: Unit docker.service entered failed state.
Feb 25 17:26:10 joinApp2 systemd[1]: docker.service failed.
Feb 25 17:26:11 joinApp2 systemd[1]: docker.service holdoff time over, scheduling restart.
Feb 25 17:26:11 joinApp2 systemd[1]: start request repeated too quickly for docker.service
Feb 25 17:26:11 joinApp2 systemd[1]: Failed to start Docker Application Container Engine.
Feb 25 17:26:11 joinApp2 systemd[1]: Unit docker.service entered failed state.
Feb 25 17:26:11 joinApp2 systemd[1]: docker.service failed.

当时问题没解决搁置了。

今天重新google ， 解决了问题，现在贴下解决办法

vi /etc/sysconfig/selinux
把selinux后面的改为disabled，重启一波机器，再重启docker就可以了

 

解决方法二：

===================

[root@master01 ~]# systemctl restart docker

Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xe" for details.
[root@master01 ~]# systemctl status docker.service
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Mon 2018-01-22 23:31:10 CST; 5s ago
Docs: http://docs.docker.com
Process: 17943 ExecStart=/usr/bin/dockerd-current --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --exec-opt native.cgroupdriver=systemd --userland-proxy-path=/usr/libexec/docker/docker-proxy-current $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY $REGISTRIES (code=exited, status=1/FAILURE)
Main PID: 17943 (code=exited, status=1/FAILURE)


Jan 22 23:31:09 master01 systemd[1]: Starting Docker Application Container Engine...
Jan 22 23:31:09 master01 dockerd-current[17943]: time="2018-01-22T23:31:09.315315148+08:00" level=info msg="libcontainerd: new containerd process, pid: 17954"
Jan 22 23:31:10 master01 dockerd-current[17943]: time="2018-01-22T23:31:10.329514525+08:00" level=fatal msg="Error starting daemon: error initializing graphdriver: devmapper..._devices\n"
Jan 22 23:31:10 master01 systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
Jan 22 23:31:10 master01 systemd[1]: Failed to start Docker Application Container Engine.
Jan 22 23:31:10 master01 systemd[1]: Unit docker.service entered failed state.
Jan 22 23:31:10 master01 systemd[1]: docker.service failed.
Hint: Some lines were ellipsized, use -l to show in full.

处理方法

vim /etc/sysconfig/docker-storage

DOCKER_STORAGE_OPTIONS=

vim /etc/sysconfig/docker

OPTIONS='--selinux-enabled --log-driver=journald --signature-verification=false'

# vim /etc/docker/daemon.json

{ "storage-driver": "devicemapper" }

最后重启docker

[root@master01 ~]# systemctl restart docker

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