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swarmd: Update README.md

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Signed-off-by: Ian Campbell <ian.campbell@docker.com>
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Ian Campbell 2017-06-28 14:22:54 +01:00
parent 4437fe84e2
commit f0ca8cdabd
2 changed files with 20 additions and 14 deletions
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32
projects/swarmd/README.md
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@ -3,27 +3,33 @@
This adds a `swarmd` package for Moby which contains the standalone This adds a `swarmd` package for Moby which contains the standalone
swarmkit orchestration daemon (`swarmd`) and CLI tool (`swarmctl`). swarmkit orchestration daemon (`swarmd`) and CLI tool (`swarmctl`).
The package tracks [docker/swarmkit#1965][PR1965] which The package tracks [ijc's `container-wip` branch][containerd-wip].
is a WIP PR adding a containerd executor to swarmkit. Compared with mainline swarmkit (which container a basic containerd
executor merged in [PR1965]) this reworks the executor to use the
container client library and adds support for CNI networking.
With a suitable moby image (such as `swarmd.yml` from this directory) With a suitable LinuxKit image (such as `swarmd.yml` from this
something like this should work: directory) something like this should work:
runc exec swarmd swarmctl service create --image docker.io/library/nginx:alpine --name nginx ctr exec -- swarmd swarmd swarmctl service create --image docker.io/library/nginx:alpine --name nginx
runc exec swarmd swarmctl service ls ctr exec -- swarmd swarmd swarmctl service ls
Note that `swarmd` uses the "swarmd" containerd namespace, so to see
swarmd managed containers you will need to use `-n swarmd` on all
`ctr` commands e.g.:
ctr -n swarmd containers ls
Alternatively you may export `CONTAINERD_NAMESPACE=swarmd`.
### TODO ### TODO
Currently the swarm state directory needs to be at a path which is Bootstrapping a cluster needs more investigation. Tokens and join
identical from the PoV of both the `containerd` and `swarmd`
processes. For now this means that the swarmkit state is put in
`/var/lib/containerd/swarmd`.
Bootstrapping a cluster needs more invesigation. Tokens and join
addresses can currently only be passed on the `swarmd` command line addresses can currently only be passed on the `swarmd` command line
which is inconvenient for automated image deployment. which is inconvenient for automated image deployment.
Swarmkit [PR 1965][PR1965] also contains a number of TODOs which are not Swarmkit [PR 1965][PR1965] also contains a number of TODOs which are not
separately listed here. separately listed here.
[PR1665]: https://github.com/docker/swarmkit/pull/1965 [PR1965]: https://github.com/docker/swarmkit/pull/1965
[containerd-wip]: https://github.com/ijc/swarmkit/tree/containerd-wip

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projects/swarmd/swarmd/Dockerfile
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@ -39,7 +39,7 @@ RUN mkdir -p /out/usr/bin/ /out/etc /out/opt/cni/bin /out/etc/cni/net.d
##################################################################### #####################################################################
# Swarmd # Swarmd
# https://github.com/ijc25/swarmkit/tree/containerd-wip # https://github.com/ijc/swarmkit/tree/containerd-wip
ENV SWARMKIT_REPO=https://github.com/ijc25/swarmkit ENV SWARMKIT_REPO=https://github.com/ijc25/swarmkit
ENV SWARMKIT_BRANCH=containerd-wip ENV SWARMKIT_BRANCH=containerd-wip
ENV SWARMKIT_COMMIT=4a484ccb498bee117fe6167d5a5e7ea0f6d4f2e9 ENV SWARMKIT_COMMIT=4a484ccb498bee117fe6167d5a5e7ea0f6d4f2e9