Invalid Signature on Ubuntu Focal Mongo 4.4

Ops and Admin
1

Our organization uses 4.2 on Ubuntu Focal(Yes I’ve read the documentation and found that focal is not supported but whenever we run mongo -version it returns 4.2). Our goal is to upgrade mongo to 5.0 and we are doing it by increments by going to 4.4 and then to 5.0. However, upon trying to upgrade to 4.4 using the mongo 4.4 installation guide we would get the error;
The following signatures were invalid: EXPKEYSIG 656408E390CFB1F5 MongoDB 4.4 Release Signing Key <packaging@mongodb.com>

Now my questions are what could be causing this error? I tried on a virtual machine running Ubuntu Focal 20.04 and I could run the documentation just fine. Any help would be great. Let me know if any information I should provide.

Thank you,
Jeric

2

Hello,

An additional update we decided to upgrade to 4.4 using other methods. Reading upon forums I’ve found that you can download the tgz file from the release archives then run apt install to install it. Another one is to use mongodump and mongorestore.

Anyone who could provide insight as to what process would be easier? We are going to upgrade from 4.2 to 4.4. Any help would be appreciated

Thanks,
Jeric