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foreword
Basic format of ssh config configuration file
Host : hostName的别名
HostName： 是目标主机的主机名，也就是平时我们使用ssh后面跟的地址名称。
Port：指定的端口号。
User：指定的登陆用户名。
IdentifyFile：指定的私钥地址。
复制代码I use the ssh config configuration file to manage ssh connections
1.1 Example
# Private 192.168.2.125
Host iPhone
HostName 192.168.2.125
User root
IdentityFile ~/.ssh/id_rsa_Theos125
# Private gitlab.v6h5.
Host gitlab.v6h5.cn
HostName gitlab.v6h5.
User git
IdentityFile ~/.ssh/id_rsa_qinbaowan
复制代码1.2 Notes
- Be sure to remember to configure Host, otherwise other connections will not be able to connect: `Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
`
$ ssh iPhone
[email protected]'s password:
iPhone:~ root#
复制代码将公钥传送到远程主机host上面ssh-copy-id remember to specify the authentication file
ssh-copy-id -i id_rsa_Theos125 [email protected]
复制代码II Permission Settings for Private Key File
common problem:Permissions 0640 for '/Users/mac/.ssh/qctmac_id_rsa' are too open.
The file cannot be accessed by others, as long as the read permission of the group to which it belongs and others are canceled.
➜ .ssh chmod 600 qctmac_id_rsa
➜ .ssh chmod 644 qctmac_id_rsa.pub
-rw-r--r--@ 1 mac staff 742 4 7 18:03 qctmac_id_rsa.pub
-rw-------@ 1 mac staff 3434 4 7 18:03 qctmac_id_rsa
复制代码III Prerequisites: SSH connection without password
-
Create rsa:
ssh-keygen -t rsa -b 4096 -C "[email protected]" -
Configure config:
➜ .ssh touch config -
Use pbcopy or ssh-copy-id to copy the public key to the corresponding remote server
➜ .ssh pbcopy < ~/.ssh/qctmac_id_rsa.pub
Use ssh-copy-id for reporting
ssh-copy-id: Do not leak the private key! Just copy the public key (*.pub file) to the remote server;
`$ ssh-copy-id -i ~/.ssh/id_rsa_Theos125 [email protected]
`(IP+default port here copies the public key, if the private key is specified ssh-copy-id will find the public key by itself.)
If it is configured on a company Mac, remember to set a password and remove the ~/.ssh/ directory when changing Macs xx_id_rsa/xx_id_rsa.pub.
3.1 Create rsa
ssh-keygen -t rsa -b 4096 -C "[email protected]"
3.2 Configuring ssh config
config file syntax
Host 别名
HostName： 是目标主机的主机名，也就是平时我们使用ssh后面跟的地址名称。
Port：指定的端口号。
User：指定的登陆用户名。
IdentifyFile：指定的私钥地址。
复制代码# Private 192.168.2.125
Host iphone
HostName 192.168.2.125
User root
IdentityFile ~/.ssh/id_rsa_Theos125
# Private github
Host github.com
HostName github.com
User git
IdentityFile ~/.ssh/id_rsa
# git clone [email protected]:u011018979/resume.git
Host codechina.csdn.net
HostName codechina.csdn.net
User git
IdentityFile ~/.ssh/qctmac_id_rsa
复制代码3.3 Test the connection
➜ csdn ssh -T [email protected]
Enter passphrase for key '/Users/mac/.ssh/qctmac_id_rsa':
Welcome to GitLab, @u011018979!
复制代码Connect iPhone
$ ssh iPhone
[email protected]'s password:
iPhone:~ root#
复制代码3.4 Case: Configuring GitHub SSH keys
Enter ls -al ~/.ssh to see if existing SSH keys are present:
ssh-keygen -t rsa -b 4096 -C "[email protected]"
Add the corresponding public key to the corresponding remote server: .ssh pbcopy < ~/.ssh/qctmac_id_rsa.pub
Configure email and username: git config --global --edit
Modify author : git commit --amend --reset-author
Effect