Misunderstanding in Lab 4.8

Hi all,
I'm not sure if there is a mistake in lab 4.8 or there is something i misunderstood.
It says to use the file design-review1.yaml
and edit the pod resource requirements such that the CPU limit is exactly twice the amount requested by the container.(Hint: subtract .22)
Having the requested cpu of 0.3, to set the limit exactly twice the amount requested by the container means 0.6.
I don't understand what the hint subtract .22 means. Any ideas?
Answers
-
Well, this task is all over the place
The stress is passed 1 cpu, it requests only 0.3 and limits to 2.22. But judged by the remark, we should suppose that the 0.3 should actually be 1.0. Opening a ticket may not be a bad idea, though to remove the ambiguity. (There are a few other instances of faults like this in the material)
1 -
Hi @akovi
All content-related questions or issues must be posted in the forum, and the course author and forum moderators will respond. Opening support tickets for content-related issues will only redirect you to the forum.
Thank you,
Flavia
The Linux Foundation Training Team0 -
Hi @vadim.vararu and @akovi,
There are three distinct properties and values for the CPU in the yaml definition manifest above.
limit: cpu=2.22 defines the ceiling value of a the CPU resource a container may be allowed to reach. Once exceeding the value the CPU consumption of the container may be throttled by Kubernetes.
request: cpu=0.3 defines the minimum value of the CPU resource that a container will need during init time. This is a value that is taken into account during scheduling time by the Kubernetes scheduler.
args: cpu=1 defines the actual amount of CPU that the container will attempt to consume.
From here, following the hint to "subtract .22", will yield the double (or "twice") the resource amount you are looking for.
No correction needed, just an understanding of the significance of the properties defined by the yaml definition manifest.
Regards,
-Chris0 -
I struggled in this exercise as well, I was paying attention only on the limits and requests and without having kubectl top installed in my cp node, I am doing a trial-&-errror approach not until I tried looking at the mem-total and mem-alloc-size args. This will be a hint to anyone stuck in this section.
0
Categories
- 10.1K All Categories
- 35 LFX Mentorship
- 88 LFX Mentorship: Linux Kernel
- 502 Linux Foundation Boot Camps
- 278 Cloud Engineer Boot Camp
- 103 Advanced Cloud Engineer Boot Camp
- 47 DevOps Engineer Boot Camp
- 41 Cloud Native Developer Boot Camp
- 2 Express Training Courses
- 2 Express Courses - Discussion Forum
- 1.7K Training Courses
- 17 LFC110 Class Forum
- 4 LFC131 Class Forum
- 19 LFD102 Class Forum
- 148 LFD103 Class Forum
- 12 LFD121 Class Forum
- 61 LFD201 Class Forum
- LFD210 Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum
- 23 LFD254 Class Forum
- 567 LFD259 Class Forum
- 100 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 1 LFS145 Class Forum
- 22 LFS200 Class Forum
- 739 LFS201 Class Forum
- 1 LFS201-JP クラス フォーラム
- 1 LFS203 Class Forum
- 45 LFS207 Class Forum
- 298 LFS211 Class Forum
- 53 LFS216 Class Forum
- 46 LFS241 Class Forum
- 40 LFS242 Class Forum
- 37 LFS243 Class Forum
- 10 LFS244 Class Forum
- 27 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- 131 LFS253 Class Forum
- 994 LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 87 LFS260 Class Forum
- 126 LFS261 Class Forum
- 31 LFS262 Class Forum
- 79 LFS263 Class Forum
- 15 LFS264 Class Forum
- 10 LFS266 Class Forum
- 17 LFS267 Class Forum
- 17 LFS268 Class Forum
- 21 LFS269 Class Forum
- 200 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- 212 LFW211 Class Forum
- 153 LFW212 Class Forum
- 899 Hardware
- 217 Drivers
- 74 I/O Devices
- 44 Monitors
- 115 Multimedia
- 208 Networking
- 101 Printers & Scanners
- 85 Storage
- 749 Linux Distributions
- 88 Debian
- 64 Fedora
- 14 Linux Mint
- 13 Mageia
- 24 openSUSE
- 133 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 355 Ubuntu
- 473 Linux System Administration
- 38 Cloud Computing
- 69 Command Line/Scripting
- Github systems admin projects
- 94 Linux Security
- 77 Network Management
- 108 System Management
- 49 Web Management
- 63 Mobile Computing
- 22 Android
- 27 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 527 Off Topic
- 127 Introductions
- 213 Small Talk
- 19 Study Material
- 794 Programming and Development
- 262 Kernel Development
- 498 Software Development
- 922 Software
- 257 Applications
- 182 Command Line
- 2 Compiling/Installing
- 76 Games
- 316 Installation
- 53 All In Program
- 53 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)