Docker: update README for VyOS inside container

This commit is contained in:
Christian Breunig 2023-11-26 13:53:25 +01:00
parent 360f7e2e0d
commit a0d3d87813
2 changed files with 46 additions and 24 deletions

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# syntax = docker/dockerfile:1
# Copyright (C) 2020 VyOS maintainers and contributors
# Copyright (C) 2020-2023 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
@ -17,10 +17,9 @@
# Define arguments for VyOS image
ARG VYOS_VERSION
ARG BUILD_DATE
ARG DEBIAN_VERSION
# Use Debian as base layer
FROM debian:${DEBIAN_VERSION}-slim
FROM debian:bookworm-slim
# Copy installer script and default build settings
COPY [ "data/defaults.json", "data/live-build-config/archives/*", "docker-vyos/vyos_install_common.sh", "docker-vyos/vyos_install_stage_01.sh", "/tmp/" ]
COPY [ "data/live-build-config/hooks/live/*", "/tmp/hooks/" ]

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VyOS can be run as a Docker container on a Linux host with a compatible kernel.
## Build Container
## Building Docker image
To build a Docker image you need to have the whole `vyos-build` repository, not
only a folder with Dockerfile, because some files from this repository are
required for building.
To build a Docker image you need to have the whole `vyos-build` repository, not only a folder with Dockerfile, because some files from this repository are required for building.
Docker image with VyOS can be built on Linux host with the next command:
```
docker build --compress -f Dockerfile -t vyos:version-`date -u +%Y%m%d%H%M%S` --build-arg BUILD_DATE="`date -u --rfc-3339=seconds`" --build-arg VYOS_VERSION=version --build-arg DEBIAN_VERSION=debian --progress plain ..
```console
docker build --compress --file Dockerfile \
--tag vyos:version-`date -u +%Y%m%d%H%M%S` \
--build-arg BUILD_DATE="`date -u --rfc-3339=seconds`" \
--build-arg VYOS_VERSION=version \
--build-arg DEBIAN_VERSION=debian \
--progress plain ..
```
Or, if you want to rebuild completely from the scratch (without cache):
```
docker build --no-cache --pull --compress -f Dockerfile -t vyos:version-`date -u +%Y%m%d%H%M%S` --build-arg BUILD_DATE="`date -u --rfc-3339=seconds`" --build-arg VYOS_VERSION=version --build-arg DEBIAN_VERSION=debian --progress plain ..
```console
docker build --no-cache --pull --compress --file Dockerfile \
--tag vyos:version-`date -u +%Y%m%d%H%M%S` \
--build-arg BUILD_DATE="`date -u --rfc-3339=seconds`" \
--build-arg VYOS_VERSION=version \
--build-arg DEBIAN_VERSION=debian \
--progress plain ..
```
> **NOTE:** You must use proper version value for `DEBIAN_VERSION` variable. It can be only `jessie` (for VyOS 1.2) or `buster` (for VyOS 1.3).
> **_NOTE:_** You must use proper version value for `DEBIAN_VERSION` variable.
It can be only `jessie` (for VyOS 1.2) or `buster` (for VyOS 1.3).
## Running Docker image
## Run Container
Docker container with VyOS can be running with the next command:
```
docker run -v /lib/modules:/lib/modules --privileged --name vyos_inside_docker -d vyos:version
```console
docker run --privileged --detach \
--volume /lib/modules:/lib/modules \
--name vyos_inside_docker vyos:version
```
You need to use the `--privileged` flag because the system actively interacts with a host kernel to perform routing operations and tune networking options.
You need to use the `--privileged` flag because the system actively interacts
with a host kernel to perform routing operations and tune networking options.
**Experimantal:** You can limit access to some system resources with:
```
docker run --tmpfs /tmp --tmpfs /run --tmpfs /run/lock -v /sys/fs/cgroup:/sys/fs/cgroup:ro -v /lib/modules:/lib/modules --privileged --name vyos_inside_docker -d vyos:version
```console
docker run --privileged --detach \
--tmpfs /tmp \
--tmpfs /run \
--tmpfs /run/lock \
--volume /lib/modules:/lib/modules:ro \
--volume /sys/fs/cgroup:/sys/fs/cgroup:ro \
--name vyos_inside_docker vyos:version
```
## Logging into a VyOS container
### Log into container
To open VyOS CLI, you can use SSH connection to the Docker container or run on host:
To open VyOS CLI, you can use SSH connection to the Docker container or run
on host:
```
```console
docker exec -it vyos_inside_docker su vyos
```
## Troubleshooting
If in VyOS appears IPv6-related errors, for example, it cannot assign an IPv6 for an interface, it is necessary to enable IPv6 support in Docker. This can be done, by editing `/etc/docker/daemon.json`:
If in VyOS appears IPv6-related errors, for example, it cannot assign an IPv6
address for an interface, it is necessary to enable IPv6 support in Docker.
```
This can be done, by editing `/etc/docker/daemon.json`:
```console
{
"ipv6": true,
"fixed-cidr-v6": "fe80::/64"
}
```