Lost access to Linux VM in Azure and no idea what to do? Check this out…

Last week, we have hit a really interesting issue with our Linux machines in Azure. We “somehow” (will be explained later in the post) managed to get completely locked out of the machine, not even Serial Console could have been used to login. After bunch of time spent by investigating the situation, we managed to get it resolved.

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Azure AD authentication for SSH

To be honest, managing authentication in Linux for multiple users/admins can be a huge pain. Different companies use various tools – generally, they use a centralized tool to distribute developer’s SSH keys. This can still be a pain, however if the company has Azure AD (or Office 365), why not to use those accounts for authentication?

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