Invalid format when using github key-CodePudding

I'd like to have files automatically uploaded to my server when using the git push command. But the problem is that it stops at the keys and gives an error ( Load key "/home/runner/.ssh/key": invalid format ). On the hosting, the keys are added, in the settings of the github repository - too. Maybe someone faced similar? How can this problem be solved?

Code:

name: Deploy

on:
  push:
    branches:
      - main

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      # Setup key
      - run: set -eu
      - run: mkdir "$HOME/.ssh"
      - run: echo "$" > "$HOME/.ssh/key"
      - run: chmod 600 "$HOME/.ssh/key"
      # Deploy
      - run: rsync -e "ssh -p 1022 -i $HOME/.ssh/key -o StrictHostKeyChecking=no" --archive --compress --delete . *link*/public_html/

CodePudding user response：

Try to change key file and folder .ssh permissions to

.ssh directory: 700 (drwx------)
public key (.pub file): 644 (-rw-r--r--)
private key (id_rsa): 600 (-rw-------)

lastly your home directory should not be writeable by the group or others (at most 755 (drwxr-xr-x))

http://linuxcommand.org/lc3_man_pages/ssh1.html

CodePudding user response：

I fixed the error by changing the output of the key, but the following appeared .. Writes access denied. Here is the updated code:

name: Deploy

on:
  push:
    branches:
      - main

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      # Setup key
      - run: set -eu
      - run: mkdir "$HOME/.ssh"
      - run: echo "${{ secrets.key }}" > "$HOME/.ssh/key"
      - run: chmod 600 "$HOME/.ssh/key"
      # Deploy
      - run: rsync -e "ssh -p 1022 -i $HOME/.ssh/key -o StrictHostKeyChecking=no" --archive --compress --delete . *link*/public_html/