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It's possible that your script is not working because find is not in $PATH, cron gives a very...

Corona688 was talking about the find command, not your crontab entry.

Hi,

OK, I see. That will work I suppose, though may I ask: why don't you just re-mount the new filesystem directly as the PostgreSQL filesystem ? Or is the new space not a whole filesystem of...

Hi,

Great, glad you got that sorted. One last thing that may disappoint, however. If you're doing this because you're hoping to basically add the free space of the /prod/OpenCSS filesystem to...

Hi,

Just to check something: the order in a bind mount is source first, then destination. So in my above examples, it was the content of path1 that I wanted to show up under path2. Is it the...

Hi,

Your syntax is basically correct, as far as I can tell. Here's the results of a test on my own system, running Ubuntu 16.04 x86_64:


$ pwd
/home/unixforum/271681
$ ls
path1 path2
$...

There's a lot more configuration in setting up a mail server than "enable sendmail".

If you don't need a full-on mail server and only want to send mail via something else's email account, you can...

Hi,

In RHEL/CentOS 7, the default mail server (MTA) is Postfix rather than Sendmail. Sendmail is certainly still available as a supported and installable alternative via yum, but unless you...

... ... ...
I'd suggest changing this:
if [[ $CPU_LOAD > $THRESHOLD ]];

to
if [ $CPU_LOAD -gt $THRESHOLD ];


Also I'd debug what the value of CPU_LOAD is actually at the time of the email...

Hi,

(Edit: forgot to include the date in the mail)

Here's a version of your script that's as streamlined as I've been able to make it:


#!/bin/bash

hostname="`/bin/hostname`"...

Yes Nagios is already monitoring load ,
0,15,30,45 * * * * /unixmon/servermon.p > /dev/null 2>&1
*/5 * * * * /etc/applicationMonitoring.sh

---------- Post updated at 03:04 PM ----------...

Hello,

On my own test system (which is running Ubuntu 16.04 LTS x86_64) this script does basically appear to work. At any rate, it certainly doesn't generate any false positives for me when run...

Hi,

Also, if you could please supply the full contrab entry that's being used on the live server itself to run the script every five minutes that would be good too (i.e. the entire line you see in...

This question is asked in the Red Hat forum so there is no doubt the OP is running Linux. The Linux kernel is designed to use all otherwise free RAM as cache with no penalties.

Note that under...

Hold on! If your application is a database then it is usually better to give most memory directly to the database (how this is done depends on the database used: in i.e. Oracle this is called "SGA")....

First off, you are running a hypervisor -VMware. No problems, but I do not understand the cpu queue length on a system that is doing almost nothing.

If your output ran from the base system,...

You shouldn't focus on a single metric and assume it is the key to performance. Better to provide everything useful for us to figure out what is going on on your system (hardware description, sizing,...

No, on the opposite, using your RAM as cache is expected to improve your system performance.

No. Unused RAM is wasted RAM.

I suppose it comes down to the decision if memory is cleared when the particular process that owned it terminates, or if the OS keeps it in memory in case it is needed again soon.

Additionally,...

I would focus more on the swap/page rates. If you are swapping/paging because you have exhausted real memory, then you will start to feel the performance cost of swapping/paging. What output do you...

I hear this over and over again, from the Linux community. Always use 100%, a usage under 100% is wasted RAM, blabla.

Unix Vendors do not think so.
For example the HP-UX buffer cache that is...