राम-राम आवंटित हर हाउस तू भी वाइट वॉश वाटसन क्रिक लाइन फ्रॉम द मार्केट एंड डिसोल्व इन वॉटर इन अभी तक नोटिस जेड तक कंटेनर विद के नॉट विदाउट एनी गिव रीज़न फॉर रिजर्वेशन विद क्वेश्चन एंड नेम द प्रोडक्ट फॉर्म्ड व्हाट हैपेंस व्हेन अप्लाइड इन द वर्ल्ड
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Answer:
By Alwyn Botha, Alibaba Cloud Tech Share Author. Tech Share is Alibaba Cloud's incentive program to encourage the sharing of technical knowledge and best practices within the cloud community.
This tutorial aims to give you practical experience of using Docker container resource limitation functionalities on an Alibaba Cloud Elastic Compute Service (ECS) instance, including:
CPU quotas
RAM quotas
IO bandwidth quotas
Prerequisites
You need access to an ECS server with a recent version of Docker already installed. If you don't have one already, you can follow the steps in this tutorial.
These resource limit tests use 20 - 30 MB of RAM so even a server with only a total RAM of 512MB will do.
The CPU tests are done on a server with only 2 cores. You will get more interesting results - for one of the tests - if your server has 4 cores or more.
Some of the CPU tests hog all CPUs for 15 seconds. It would be great for your teammates if you did this tutorial directly on your computer and not on the shared development server.
I am writing this tutorial using CentOS. You can use Debian / Ubuntu. 99% of this tutorial will work on any Linux distro since it mostly uses Docker commands.
You need a very basic understanding of Docker, images, containers and using docker run and docker ps -a.
Clean Up Preparation
It will really help if you have only a few ( preferably no ) containers running. That way you can easily find your tutorial container in docker ps -a output lists.
So stop and prune all the containers you do not need running.
You can quickly do that ( in your DEVELOPMENT environment ) using:Allows you to specify a soft limit smaller than --memory which is activated when Docker detects contention or low memory on the host machine. If you use --memory-reservation, it must be set lower than --memory for it to take precedence. Because it is a soft limit, it does not guarantee that the container doesn't exceed the limit.