1. I installed gitea (similar to gitlab)
2. I added a valid public key in `user settings` -> `SSH KEY`
3. `gitea` port 3000

run:

```
ssh -p 22  -Tvv  git@***.***.***.***  

```

out:

```
debug1: Found key in C:\\Users\\client/.ssh/known_hosts:17
debug2: set_newkeys: mode 1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey after 134217728 blocks
debug1: pubkey_prepare: ssh_get_authentication_socket: No such file or directory
debug2: key: C:\\Users\\client/.ssh/id_rsa (000001FBAD96F620)
debug2: key: C:\\Users\\client/.ssh/id_dsa (0000000000000000)
debug2: key: C:\\Users\\client/.ssh/id_ecdsa (0000000000000000)
debug2: key: C:\\Users\\client/.ssh/id_ed25519 (0000000000000000)
debug2: key: C:\\Users\\client/.ssh/id_xmss (0000000000000000)
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Next authentication method: publickey
debug1: Offering public key: RSA SHA256:W88rhRw****** C:\\Users\\client/.ssh/id_rsa
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Trying private key: C:\\Users\\client/.ssh/id_dsa
debug1: Trying private key: C:\\Users\\client/.ssh/id_ecdsa
debug1: Trying private key: C:\\Users\\client/.ssh/id_ed25519
debug1: Trying private key: C:\\Users\\client/.ssh/id_xmss
debug2: we did not send a packet, disable method
debug1: Next authentication method: password
debug1: read_passphrase: can't open /dev/tty: No such file or directory
git@***.***.***.***'s password:

```

I really don't understand why? 

Before that, `gitlab` was installed,`ssh` worked normally, but then `gitlab` was uninstalled and`gitea` was installed

may I know what is the reason?

---

in server, run: top

```
 PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                                                                                                                                                 
 1185 root      20   0  972600 158792  44828 S   0.0  7.7   0:06.96 gitea 

```

Is there any difference between `ssh git@***.***.***.***` and `ssh root@***.***.***.***`?