'AWS CodeCommit SSH connection stopped working suddenly (It was worked well before)

I'm working for an AWS CDK Pipeline with a source repository in AWS CodeCommit.

I set the pipeline works with the specific branch push in the repository.
And I used SSH connection
(IAM USER > security credentials > SSH keys for AWS CodeCommit)
to pull/push the source code from/to the repository.

It worked well in 2~3 months..

But today it stopped suddenly.

I searched some references but confused..
As I know, I can't set allowed host on CodeCommit by myself...

The below is a capture which I tried to find a clue...
I don't know well about SSH. Could you give me some hint if you get the reason on here? enter image description here

I replaced the SSH pub key on the IAM users > security credentials but no lucks.

And if someone know why this happen suddenly, please let me know.
(Can it be the cause that too much push in short time?)

FYI, I waited 30 minutes and tried again, but no luck...

  • Q1. Could you give me some hint what should I do with that capture?
  • Q2. Why this happen suddenly..?


Solution 1:[1]

It is working again after 1 day ?

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Noah Gray