Missing chmod: bad mode for /home/$USER/.ssh/authorized_keys

[andreas-wilm]

Hello there,

regarding the key access (https://docs.microsoft.com/en-us/azure/virtual-machines/workloads/hpc/setup-mpi#set-up-ssh-keys-for-mpi):

on most systems (depends on the umask), the newly created file /home/$USER/.ssh/authorized_keys will have world read permission. A login with key will then fail with the following (/var/log/secure on Ubuntu): sshd[pid]: Authentication refused: bad ownership or modes for file /home/$USER/.ssh/authorized_keys

A chmod 600 .ssh/authorized_keys fixes this and should be added to the section.

Thanks, Andreas

---

Document Details

⚠ Do not edit this section. It is required for docs.microsoft.com ➟ GitHub issue linking.

• ID: fbe00d45-6f18-5537-1ccc-2e86927ed114
• Version Independent ID: bb5f5c1a-01ec-b61b-db1b-3cbf30a0da0a
• Content: Set up Message Passing Interface for HPC - Azure Virtual Machines
• Content Source: articles/virtual-machines/workloads/hpc/setup-mpi.md
• Service: virtual-machines
• GitHub Login: @vermagit
• Microsoft Alias: amverma

[jakaruna-MSFT]

@andreas-wilm Thanks for the feedback.

@Potapy4 raised a pull request to fix this issue.

[jakaruna-MSFT]

@Potapy4 Thanks for your contribution

[jakaruna-MSFT]

@andreas-wilm I will close this out for now. Once the document author approves the pull request, Changes will reflect on the document.