RHEL7 has another year[0] of support left (until August 30, 2021), and is based on kernel 3.10 [1], which was released in 2013 [2]
RHEL 8 is expected to see support through 2029, and is based on kernel 4.18, which was released in 2018.
Redhat does backport changes, but tends to avoid backporting feature changes.
If you want to be able to use "recent" features of software, you are probably not running running Redhat But, many companies prefer the stability of systems that have been battle tested, and so are perpetually years behind the bleeding edge in terms of features.
I don’t mean to start an off-topic debate on this, but I just have to say that personally, I run into issues caused by using old software on our EL7 boxes all the time. For example, cgroup memory limits are broken on Red Hat 7 kernels as far as I can tell (most versions have a memory leak, but iirc the most recent has a panic instead). They’re missing all sorts of features that are useful for usability or reliability.
I’m just personally not convinced we really win much with the trade off as a society :p
Memory control group code is replete with bugs throughout 4.x kernels, way beyond RHEL 7. This is one of the big problems with getting locked into "LTS" kernels. It takes a long time to discover all the nameplate features that don't actually work.
Are there any "RHEL considered harmful" posts? That project is one of the most damaging things for the Linux ecosystem IMO. It forces companies on to ancient outdated compilers and library versions that are full of bugs.
RHEL7 has another year[0] of support left (until August 30, 2021), and is based on kernel 3.10 [1], which was released in 2013 [2]
RHEL 8 is expected to see support through 2029, and is based on kernel 4.18, which was released in 2018.
Redhat does backport changes, but tends to avoid backporting feature changes.
If you want to be able to use "recent" features of software, you are probably not running running Redhat But, many companies prefer the stability of systems that have been battle tested, and so are perpetually years behind the bleeding edge in terms of features.
[0] https://access.redhat.com/support/policy/updates/errata/
[1] https://www.redhat.com/en/blog/what-latest-kernel-release-my...
[2] https://kernelnewbies.org/LinuxVersions