tesco and sainsburys hit with technical issues (www.techmeme.com)

submitted 5 months ago by Docus@lemmy.world to c/unitedkingdom@feddit.uk

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cross-posted from: https://infosec.pub/post/9811127

Two of the UK's biggest supermarket chains, Tesco and Sainsbury's, were hit with technical issues on Saturday; Sainsbury's blames a software update (Bloomberg.com)

Bloomberg.com: Two of the UK's biggest supermarket chains, Tesco and Sainsbury's, were hit with technical issues on Saturday; Sainsbury's blames a software update — Two of the UK's biggest supermarket chains - Tesco and Sainsbury's - were hit with technical issues on Saturday.

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[-] UrbonMaximus@feddit.uk 1 points 5 months ago

What do you do when you need to update all the machines with your setup?

[-] jabjoe@feddit.uk 1 points 5 months ago

A common way is to have two (or more) system partitions. You update one, charge the boot one and reboot. Typically the system partition is read only use. The bootloader tries the one it is told to try first, if it finds itself back in the bootloader it boots the other. You have a watch dog that resets if not kicked.

Buildroot and Yoctor give you a few update options. Then there is things like: https://swupdate.org/

And it's not really that hard to role your own.

this post was submitted on 16 Mar 2024

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