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Added step to install a public key on a remote server for passwordless authentication manually

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Fabrice Quenneville 2024-10-24 14:13:52 -04:00
parent 0a0099d44d
commit e793f578de
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notes/ssh.md
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@ -63,6 +63,34 @@ ssh-copy-id -i /home/fabrice/.ssh/fabquenneville fabrice@servername.fabq.ca
- `ssh-copy-id -i /home/fabrice/.ssh/fabquenneville`: This specifies which private key to use for authentication when copying the public key.
- `root@192.168.1.100` and `fabrice@servername.fabq.ca`: These commands install the public key on the respective remote servers, allowing for secure, passwordless access.
**Install the public key on the remote server for passwordless authentication manually**
This process is useful when ssh-copy-id is unavailable, or when you want more granular control over the manual setup of passwordless SSH authentication. The ssh-copy-id tool automatically installs your public key on the remote machine, but if you prefer or need to do it manually, these are the steps:
1. Create the .ssh directory if it doesn't exist and set proper permissions
```bash
mkdir -p /home/fabrice/.ssh
chmod 700 /home/fabrice/.ssh
```
2. Open the authorized_keys file in an editor and paste the public key (usually from ~/.ssh/id_rsa.pub on the local machine)
```bash
nano /home/fabrice/.ssh/authorized_keys
```
3. Set the correct permissions for the authorized_keys file
```bash
chmod 600 /home/fabrice/.ssh/authorized_keys
```
4. Ensure the ownership of the .ssh directory and its contents is set to the correct user
```bash
chown -R fabrice:fabrice /home/fabrice/.ssh
```
## Verbose
- Use the 'ssh' command with the '-v' option to enable verbose mode, which provides detailed information about the connection process.