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Re: Question about memory usage

Ola Ferry!


Thank you for your quick reply! I actually forgot to mention I had been over that setting actually. I tried different values but currently its left to this:



Image: polinux/cacti 77b07bd 429.4 MiB

Ports: 80/TCP, 81/TCP, 443/TCP

Mount: cacti-volume  /data read-write

Memory: 250 MiB to 1500 MiB


As I’ve worked with cacti installs with hundreds of sources and still the memory footprint was relatively low (around 1GB) I would assume this settings would suffice.

So just to make sure, master’s memory DOES NOT influence this, right? (despite being 70% of 16GB)


Best regards,

Ricardo Mendes



From: Ferry Manders <ferry manders npo nl>
Date: Friday, 7 June 2019 at 13:33
To: Ricardo Mendes <maverickws outlook pt>
Cc: OpenShift Users List <users lists openshift redhat com>
Subject: Re: Question about memory usage



You probably have a default limit set on your installation or project, or you have a limit set in your deployment that is 512MB memory (which is 536,870,912 bytes)
You could set the memory limit higher on your deployment, please take a look at the following doc for more information and examples : https://docs.okd.io/latest/dev_guide/compute_resources.html

With Regards,
Ferry Manders

Ricardo Mendes wrote on 07/06/2019 14:15:

Hi all,


I am fairly new to OpenShift and I’ve been fiddling around this past week.

Yesterday I came across the following issue:

While deploying an image of Cacti (Open-Source monitoring and RRD) I got an error of exhausted memory.


Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 20480 bytes) in /data/www/cacti/lib/database.php on line 252


My servers memory usage is:

Master: 70% in use

Infra: 35% in use

Compute/node: 20%


I can also confirm the POD is running on the node, and Cacti has a low memory footprint actually, so, do I have to further increase the memory available on the masters??



Best regards,

Ricardo Mendes

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