November 2017
Intermediate to advanced
298 pages
7h 10m
English
Content preview from Deployment with Docker
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Read-only containers
In the development of our previous examples spanning most of the chapters, we did not really pay much attention to whether containers changed the state of the filesystem while running. This is not such a problem for test and development systems, but in production, it is very important to lock things down even further in order to prevent malicious runtime exploitation from both internal and external sources. For this purpose, there is a docker run --read-only flag, which (unsurprisingly) mounts the container's root filesystem as read-only. By doing this, we ensure that all data that is not mounted with volumes is as pristine as when we built the image, ensuring consistency and protecting your cluster. The only thing that ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.