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Asked: 2024-09-26T22:33:52+05:30 In:

I’m encountering an issue while trying to update MongoDB 3.6 on Ubuntu. The update process fails with an error indicating that there are invalid signatures. What steps can I take to resolve this problem?

I’ve hit a snag while trying to update MongoDB 3.6 on my Ubuntu system, and it’s driving me a little crazy. During the update, I keep getting this error about invalid signatures, and I’ve tried a few things but haven’t had any luck yet. It’s one of those annoying moments where I can see the finish line, but I just can’t cross it!

Here’s what’s been happening: I followed the usual procedure to add the MongoDB repository and run the updates, but when I try to upgrade, it throws a fit about invalid signatures. I’ve checked my internet connection, and everything seems fine, plus the repository seems to be added correctly. But that signature issue keeps cropping up.

I did some digging and found out that this could be related to outdated keys or some kind of refresh issue with the keyring. But I’m not exactly a pro when it comes to Linux and managing repositories, so I’m a bit lost on what to do next. I mean, I could just reinstall MongoDB from scratch, but that sounds like a hassle.

What’s really puzzling is that I’ve seen others mention this error, and there are a bunch of potential solutions floating around, but none of them seem to apply directly to my situation. I tried to re-import the GPG keys, but I’m unsure if I did it right because the error still pops up. And honestly, I’m worried that I might screw up my current setup.

So, if anyone has been in the same boat or knows what’s up with these signatures, I’d love to hear what solutions worked for you! Any step-by-step advice would be super helpful. Or if there are alternative commands I might be missing, please share! I’m all ears because I really want to get this update sorted without causing more headaches down the line. Thanks in advance for any tips or guidance you can offer!

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    2 Answers



    1. MongoDB Update Help

      MongoDB 3.6 Update Error Help

      Sounds like you’re having a tough time with that MongoDB update! The invalid signatures error can be really frustrating, especially when you’re so close to getting it done.

      Here’s a step-by-step guide that might help:

      1. Check Your Current GPG Keys: Sometimes, the key might be outdated or missing. You can check the current keys with this command: 
        sudo apt-key list
      2. Add/Update the MongoDB GPG Key: If you suspect the keys are outdated, try re-importing the GPG key like this: 
        wget -qO - https://www.mongodb.org/static/pgp/server-3.6.asc | sudo apt-key add -
      3. Update the Package List: After updating the keys, make sure to update your package list: 
        sudo apt-get update
      4. Upgrade MongoDB: Now, try upgrading again: 
        sudo apt-get install --only-upgrade mongodb-org

      Alternative Commands:

      If you still see the signature issue, you might want to clear your local repository cache and try again:

      sudo apt-get clean
      sudo apt-get update

      Check Your Sources List:

      Also, make sure your MongoDB repository is correctly listed in your sources list. You can find that in:

      /etc/apt/sources.list.d/mongodb-org-3.6.list

      It should look something like this:

      deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/3.6 multiverse

      If All Else Fails:

      If you’re still stuck, sometimes a clean reinstall can solve those lingering issues. Just back up your data and use:

      sudo apt-get remove --purge mongodb-org*
      sudo apt-get install mongodb-org

      But only go that route if you’re okay with the hassle of reconfiguring things!

      Hopefully, these steps get you on track! Don’t hesitate to reach out if you run into more snags. Good luck!


    2. It sounds like you’ve encountered a common issue when updating MongoDB on Ubuntu related to GPG signatures. This often occurs when the repository’s GPG keys are either outdated or were not correctly imported. To resolve this, you should start by ensuring that the MongoDB GPG keys are correctly added. You can refresh the keys by running the following commands:

      curl -fsSL https://www.mongodb.org/static/pgp/server-3.6.asc | sudo apt-key add -

      After you’ve successfully re-imported the keys, make sure to update your package list with sudo apt-get update before attempting the upgrade again. If the error persists, verify that the MongoDB repository is correctly listed in your sources list:

      cat /etc/apt/sources.list.d/mongodb-org-3.6.list

      The line should look something like this: deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/3.6 multiverse. If there are any discrepancies, you may want to remove the repository and add it again using the official instructions from the MongoDB documentation. This should ideally fix the problem and allow you to complete the upgrade smoothly.

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