When you have multiple account of the gitlab.com (ex: private and company), the gitlab.com will reject your key if you want to use same key for each account.
How to handle it?
I can propose 2 ways.
1. use ~/.ssh/config
1. Open or create ~/.ssh/config
2. You can add an entry like below.
host gitlab_company
HostName gitlab.com
IdentityFile ~/.ssh/company_id_rsa
User git
- The first line is as your preference.
-
HostNameandUserare fixed for the gitlab.com. -
IdentityFileis your private key.
3. Also you can add another entry for your private account or something.
host gitlab_private
HostName gitlab.com
IdentityFile ~/.ssh/private_id_rsa
User git
4. Open .git/config in your repository.
Let's move to your local git repository.
Then open .git/config, you can see like below.
[core]
repositoryformatversion = 0
filemode = true
bare = false
logallrefupdates = true
[remote "origin"]
url = git@gitlab.com:company/something.git
fetch = +refs/heads/*:refs/remotes/origin/*
[branch "main"]
remote = origin
merge = refs/heads/main
Please look url under [remote "origin"].
You can change git@gitlab.com:... to git@gitlab_company:... or git@gitlab_private:... like below.
url = gitlab_company:company/something.git
Finally, git client uses your ssh key which defined in configuration files automatically.
2. make command for switching ssh keys
When you have multiple ssh keys like below.
$ ll ~/.ssh/
total 4
-rw------- 1 m me 3243 Aug 31 2021 company_id_rsa
-rw-r--r-- 1 me me 746 Aug 31 2021 company_id_rsa.pub
-rw------- 1 me me 3243 Sep 29 2021 private_rsa
-rw-r--r-- 1 me me 746 Sep 29 2021 private_rsa.pub
You can add below function into a bash configuration file, such as .bashrc or .bash_aliases.
function switch_ssh() {
rm ~/.ssh/id_rsa ~/.ssh/id_rsa.pub
ln -s ~/.ssh/$1_id_rsa ~/.ssh/id_rsa
ln -s ~/.ssh/$1_id_rsa.pub ~/.ssh/id_rsa.pub
ls -laF ~/.ssh/id_rsa
ls -laF ~/.ssh/id_rsa.pub
}
Then you can execute like below
switch_ssh company
Above command makes 2 symbolic links like below.
$ ll ~/.ssh/
total 6
-rw------- 1 ryo ryo 3243 Aug 31 2021 company_id_rsa
-rw-r--r-- 1 ryo ryo 746 Aug 31 2021 company_id_rsa.pub
-rw------- 1 ryo ryo 3243 Sep 29 2021 private_rsa
-rw-r--r-- 1 ryo ryo 746 Sep 29 2021 private_rsa.pub
lrwxrwxrwx 1 ryo ryo 32 Apr 20 16:22 id_rsa -> /home/ryo/.ssh/company_id_rsa
lrwxrwxrwx 1 ryo ryo 36 Apr 20 16:22 id_rsa.pub -> /home/ryo/.ssh/company_id_rsa.pub
This command will make or remake symbolic link named id_rsa from company_id_rsa. Of course, switch_ssh private makes id_rsa from private_id_rsa. id_rsa is default key name git client normally use.
Let's enjoy your git life!
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