Setting memory and CPU limits to Docker containers could prevent VM instances crashing – speaking from personal experience though. Here’s how to set it up.
Prerequisites
- Docker
Solution
A docker run example:
docker run -d -p 80:80 --cpus=2 -m 512m --name redis redis:alpine
And, the same thing with Docker Compose:
version: "3.9"
services:
redis:
image: redis:alpine
deploy:
resources:
limits:
cpus: 2
memory: 512M
reservations:
cpus: 1
memory: 256M
Note: limits set an upper boundary on resource consumption, think of it as a hard limit, while reservations specify the minimum resources required for the container to run.
Conclusion
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