Host key verification failed bitbucket pipeline - deployment

Question

Hi i have a problem configuring bitbucket pipeline with ssh login on my remote server.
The output of error is:
ssh_askpass: exec(/usr/bin/ssh-askpass): No such file or directory
Host key verification failed
These are the steps i follow:
generate private and public keys (without password) on my server using this command: ssh-keygen -t rsa -b 4096
add base64 encoded private key under Repository Settings->Pipelines->Deployments->Staging environments
push file "my_known_hosts" on the repository created with: ssh-keyscan -t rsa myserverip > my_known_hosts
I also tried to do another test:
generate keys from Repository Settings
copy public key to authorized_keys file on my remote server
type the ip of my remote server in "Known hosts" click fetch and add
chmod 700 ~/.ssh
chmod 600 ~/.ssh/authorized_keys
This is how i configure pipeline ssh connection
image: atlassian/default-image:latest
pipelines:
default:
- step:
name: Deploy to staging
deployment: staging
script:
- echo "Deploying to staging environment"
- mkdir -p ~/.ssh
- cat ./my_known_hosts >> ~/.ssh/known_hosts
- (umask 077 ; echo $SSH_KEY | base64 --decode > ~/.ssh/id_rsa)
- ssh $USER#$SERVER -p$PORT 'echo "connected to remote host as $USER"'
I'm trying all possible things but still can't connect.
Can anyone help me?

Answer 1

This happen when you try to ssh the first time to the server, you can remove host checking by this option StrictHostKeyChecking=no, below is the complete command for your reference.
ssh -o StrictHostKeyChecking=no $USER#$SERVER -p$PORT 'echo "connected to remote host as $USER"'
PS: disabling host checking is not secure way to do, you can add server key to your ~/.ssh/known_host , run this command ssh-keyscan host1 , replace host1 to the host you want to connect.