this post was submitted on 03 Aug 2024
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Edit: it's CentOS 7 (original: CentOS 3 on a self checkout?!?) (lemmy.ml)
submitted 1 month ago* (last edited 1 month ago) by harsh3466@lemmy.ml to c/linux@lemmy.ml
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Am I crazy in thinking that the shop I was in that has CentOS 3 running their self checkouts should have a more up to date and currently supported OS? These are brand new self checkouts (the shop has had them for about a year now, but you get my point.)

It’s a genuine question. Am I wrong in thinking that using this OS on a self checkout is a terrible idea? (FWIW this shop is an international retailer)

I have no stake in the shop or anything. I just happened to be there when they had to reboot a self checkout and I noticed the OS version as I was going by.

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[–] CountVon@sh.itjust.works 37 points 1 month ago (2 children)

It's likely CentOS 7.9, which was released in Nov. 2020 and shipped with kernel version 3.10.0-1160. It's not completely ridiculous for a one year old POS systems to have a four year old OS. Design for those systems probably started a few years ago, when CentOS 7.9 was relatively recent. For an embedded system the bias would have been toward an established and mature OS, and CentOS 8.x was likely considered "too new" at the time they were speccing these systems. Remotely upgrading between major releases would not be advisable in an embedded system. The RHEL/CentOS in-place upgrade story is... not great. There was zero support for in-place upgrade until RHEL/CentOS 7, and it's still considered "at your own risk" (source).

[–] 9point6@lemmy.world 8 points 1 month ago

For many, CentOS7 is the last version of it because CentOS8 is now something different—they swapped it from being downstream from RHEL to essentially being the RHEL beta branch

[–] skullgiver@popplesburger.hilciferous.nl 2 points 1 month ago

CentOS 7 was already approaching end of life a few years ago, and it's dead now. There are reasons not to use CentOS 8 or its enterprise counterparts, but this is still very old software for a supposedly new-ish system.

I never really got why manufacturers like these went for CentOS when Ubuntu exists. You get the same level of support, with the same packages if you really want that SELinux experience, except you can actually upgrade between versions.

[–] NegativeLookBehind@lemmy.world 33 points 1 month ago* (last edited 1 month ago)

It’s the kernel version

[–] skullgiver@popplesburger.hilciferous.nl 23 points 1 month ago (1 children)

CentOS 7, released with Linux 3, only went out of support a month ago.

Expect to see it pop up everywhere the coming five to six years. The sort of people who still run CentOS generally aren't the sort of people who upgrade their software unless they absolutely have to. It's like those ATMs running that obscure version of Windows XP and 7 (although the Windows 7 Embedded release will still receives updates for a few more months)), you deploy an OS onto them, kill any accessible port you can find, and just let it do it's thing for a couple of years.

The only reason the DOS POS systems are being phased out is that the hardware they run on can no longer be replaced easily, and even then Dosbox is sometimes used to run POS software.

[–] lord_ryvan@ttrpg.network 2 points 1 month ago

Then there's Dutch trains from NS running the time schedules on Vista until a few years ago...

[–] undualies@lemm.ee 19 points 1 month ago

It's CentOS 7.x

[–] TimeSquirrel@kbin.melroy.org 11 points 1 month ago (1 children)

What is the risk if it's all on a closed internal network? You can safely run Windows 98 as long as you're very careful about what goes in and out at your gateway.

Commerical networks tend to be a bit more robust than Joe Schmoe's basement router. It's a giant pain to keep up with each and every update on everything a store uses (not just self checkouts, things like CCTV systems, HVAC monitoring, electronic signage like smart screens, etc.) so usually it's all controlled at the network level.

I install CCTV, I guarantee you more than three quarters of the DVRs and PoE cameras I install never get updated and are "set and forget". I've pulled out 10-15 year old cameras still with original firmware in giant national chain stores when they do refreshes of their infrastructure.

[–] delirious_owl@discuss.online 0 points 1 month ago (1 children)

Its a POS. By definition its internet connected.

[–] TimeSquirrel@kbin.melroy.org 2 points 1 month ago (1 children)

I'm sure it's not directly connected with an externally accessible IP. It's either communicating with a backoffice server, or on a secure VPN tunnel to the rest of the corporate network.

[–] delirious_owl@discuss.online 1 points 1 month ago

The point is that it shouldn't be accessible, but a vulnerability would make it accessible. Its connected to the internet. Its a risk.

[–] bloodfart@lemmy.ml 4 points 1 month ago

I think I recognize that system by the monitor glare, where’d you take the picture?

[–] fin@sh.itjust.works 4 points 1 month ago* (last edited 1 month ago) (2 children)

Is CentOS still getting updates? I thought it’s killed by Redhat years ago.

[–] tfw_no_toiletpaper@lemmy.world 2 points 1 month ago

It does not, a few Cisco appliances in our company run / ran cent and AFAIK the infra teams all had to migrate to alma and move everything over with some script from Cisco.

[–] delirious_owl@discuss.online 1 points 1 month ago

Cent7 stopped getting updates last month. There is at least one mirror still providing the old updates. Not sure about newer versions