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Fix grammar and add some clarifications to podman post

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Dave Gallant
2021-10-16 12:03:27 -04:00
parent c0bfb02906
commit a12976a47f
1 changed files with 6 additions and 5 deletions
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content/post/replacing-docker-with-podman-on-macos.md
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@@ -25,7 +25,7 @@ flowchartDiagrams:
enable: false enable: false
options: "" options: ""
sequenceDiagrams: sequenceDiagrams:
enable: false enable: false
options: "" options: ""
@@ -40,6 +40,7 @@ There are a number of reasons why you might want to replace docker, especially o
Docker has been one of the larger influencers in the container world, helping to standardize the [OCI Image Format Specification](https://github.com/opencontainers/image-spec/blob/main/spec.md). For many developers, containers have become synonymous with terms like `docker` and `Dockerfile` (a file containing build instructions for a container image). Docker has certainly made it very convenient to build and run containers, but it is not the only solution for doing so. Docker has been one of the larger influencers in the container world, helping to standardize the [OCI Image Format Specification](https://github.com/opencontainers/image-spec/blob/main/spec.md). For many developers, containers have become synonymous with terms like `docker` and `Dockerfile` (a file containing build instructions for a container image). Docker has certainly made it very convenient to build and run containers, but it is not the only solution for doing so.
This post briefly describes my experience swapping out docker for podman on macOS.
### What is a container? ### What is a container?
@@ -53,17 +54,17 @@ One of the most interesting features of podman is that it is daemonless. There i
Podman is rootless by default. It is now possible to [run the docker daemon rootless](https://docs.docker.com/engine/security/rootless/) as well, but it's still not the default behaviour. Podman is rootless by default. It is now possible to [run the docker daemon rootless](https://docs.docker.com/engine/security/rootless/) as well, but it's still not the default behaviour.
I've also observed that so far my 2019 16" Macbook Pro has not yet sounded like a jet engine. I've also observed that so far my 2019 16" Macbook Pro hasn't sounded like a jet engine, although I haven't performed any disk-intensive operations yet.
### Installing podman ### Installing podman
Running podman on macOS is more involved than on Linux, because the podman-machine must run Linux inside a virtual machine. Fortunately, the installation is made simple with [brew](https://brew.sh/) (read [this](https://podman.io/getting-started/installation#linux-distributions) if you're installing podman on Linux): Running podman on macOS is more involved than on Linux, because the podman-machine must run Linux inside of a virtual machine. Fortunately, the installation is made simple with [brew](https://formulae.brew.sh/formula/podman) (read [this](https://podman.io/getting-started/installation#linux-distributions) if you're installing podman on Linux):
```sh ```sh
brew install podman brew install podman
``` ```
If on macOS, the podman machine must be started: The podman machine must be started:
```sh ```sh
# This is not necessary on Linux # This is not necessary on Linux
@@ -93,7 +94,7 @@ $ podman run --rm -ti alpine
Error: error preparing container 99ace1ef8a78118e178372d91fd182e8166c399fbebe0f676af59fbf32ce205b for attach: error configuring network namespace for container 99ace1ef8a78118e178372d91fd182e8166c399fbebe0f676af59fbf32ce205b: error adding pod unruffled_bohr_unruffled_bohr to CNI network "podman": unexpected end of JSON input Error: error preparing container 99ace1ef8a78118e178372d91fd182e8166c399fbebe0f676af59fbf32ce205b for attach: error configuring network namespace for container 99ace1ef8a78118e178372d91fd182e8166c399fbebe0f676af59fbf32ce205b: error adding pod unruffled_bohr_unruffled_bohr to CNI network "podman": unexpected end of JSON input
``` ```
What does this error mean? A bit of googling lead to [this github issue](https://github.com/containers/podman/issues/11837). What does this error mean? A bit of searching lead to [this github issue](https://github.com/containers/podman/issues/11837).
Until the fix is released, a workaround is to just specify a port (even when it's not needed): Until the fix is released, a workaround is to just specify a port (even when it's not needed):