A server is almost out of free memory and is becoming unresponsive. Which of the following sets of commands will BEST mitigate the issue?
A. free, fack, partprobe
B. lsof, lvcreate, mdadm
C. df, du, rmmod
D. fdisk, mkswap, swapon -a
Which of the following sets of commands will BEST mitigate the issue?
think about it this way, you’re running out of space, you can either free up some space or you can get some more space.
the steps listed on answer D is getting some more space, but for memory and not HDD space.
A is checking ‘free’ memory (not actually doing anything about it), using fack? (pro tip, do not type “man fack” in google…) I think they meant fsck? which is a file system consistency check, and partprobe is what you use after partitioning – partprobe is a program that informs the operating system kernel of partition table changes, by requesting that the operating system re-read the partition table. not really related to memory. Answer is obviously D, as it is dealing it memory. Hopefully, you all know what swap is for.
Thanks for your explanation.
D. fdisk, mkswap, swapon -a
Why?
because you create RAM like memory in the hard drive . I tested this in the CBT nuggets lab. The computer had ram to 99% usage, we create a swap partition and the computer was able to further process, but slowly, swap memory is slow.