Redhat 8, I want to know if I can shut down any of these processes without affecting the system :

mingetty, atd, rpc.statd, portmap, klogd, syslogd, kjournald, khubd, mdrecoveryd, kupdated, bdflush, kswapd, keventd

I dont really know what they are doing, besides the logging ones.

klogd, kjournald, khubd, kupdated, bdflush, kswapd, keventd are all kernel-level prcesses that need to be running

...you have ext3 as your filesystem, am I right?

you will also want to keep syslogd running

if mingetty, atd, rpc.statd, portmap need to be running depends...I cannot tell if you need them or not

I don't know what mdrecoveryd does...

But you should not just kill them, should you decide not wanting to have some of them - they are started via your systems init scripts and there is the place to disable them.

If I'm wrong - someone please correct me - I'd appreciate !

yes, ext3

I'm not running any website services, or mail

It's game servers, voice servers, ftp

I dont even really need to have the logging on, but for security reasons only it is left on.

What is rpc.statd and portmap doing? those dont seem like they fit into what my server requires. But, I dont just shut off processes unless I know what they are doing first

I should probably know this next question but I don't.
How do I permanently disable the /etc/init.d/ scripts?

The machines only reboot like once every 6 months, so I just turn off sendmail, but it would be nice if it just stayed off for good.
That's an easy one for some of you, so answer please

mdrecovery is for raid-devices. rpc+portmap are network related (nfs..). atd don't take much.
khubd - usb if i'm right?

sl mritch.

take a look here:

https://www.redhat.com/docs/manuals/...down-sysv.html