December 2017
Intermediate to advanced
468 pages
13h 12m
English
book
Architectural Patterns
by Anupama Murali, Pethuru Raj, Harihara Subramanian J, Pethuru Raj Chelliah
Content preview from Architectural Patterns
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Docker containers with SSH
A related and equally unfortunate practice is to bake an SSH daemon into an image. Having an SSH daemon inside a container may lead to undocumented, untraceable changes to the container infrastructure, but Docker containers are being touted as the immutable infrastructure.
There are a few use cases for SSHing into a container:
- Update the OS, services, or dependencies
- Git pull or update any application in some other fashion
- Check logs
- Backup some files
- Restart a service
Instead of using SSH, it is recommended to use the following mechanisms:
- Make the change in the container Dockerfile, rebuild the image, and deploy the container.
- Use an environment variable or configuration file accessible via volume sharing to ...
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