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getty,sshd: Mount host /tmp into containers.

Browse Source 
ctr (which runs in the getty or ssh container) relies on sharing files in /tmp
with containerd (which runs in the host mount namespace). Specifically it
currently uses paths under /tmp/containerd for the stdio FIFOs of containers, resulting in:

    # ctr run -t docker.io/library/redis:alpine test
    ctr: rpc error: code = Unknown desc = runtime create failed: runc create failed: container with id exists: test

Currently it is not possible to specify a non-existent source directory for a
bind mount, so we cannot easily bind just /tmp/containerd. Sharing all of /tmp
doesn't sound like a terrible idea anyway.

Defering updating the sha in *.yml until after some further changes to these packages.

Signed-off-by: Ian Campbell <ian.campbell@docker.com>
This commit is contained in:
Ian Campbell 2017-06-23 10:56:38 +01:00
parent ea79748830
commit 34fbe42615
2 changed files with 2 additions and 2 deletions
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2
pkg/getty/Dockerfile
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@ -28,4 +28,4 @@ COPY --from=mirror /out/ /
COPY usr/ /usr/
COPY etc/ /etc/
CMD ["/usr/bin/rungetty.sh"]
LABEL org.mobyproject.config='{"pid": "host", "net":"host", "binds": ["/run:/run", "/etc:/hostroot/etc", "/usr/bin/ctr:/usr/bin/ctr", "/usr/bin/runc:/usr/bin/runc", "/usr/bin/dist:/usr/bin/dist", "/var:/var","/containers:/containers","/dev:/dev","/sys:/sys"], "capabilities": ["all"]}'
LABEL org.mobyproject.config='{"pid": "host", "net":"host", "binds": ["/run:/run", "/tmp:/tmp", "/etc:/hostroot/etc", "/usr/bin/ctr:/usr/bin/ctr", "/usr/bin/runc:/usr/bin/runc", "/usr/bin/dist:/usr/bin/dist", "/var:/var","/containers:/containers","/dev:/dev","/sys:/sys"], "capabilities": ["all"]}'

2
pkg/sshd/Dockerfile
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@ -19,4 +19,4 @@ COPY etc/ /etc/
COPY usr/ /usr/
RUN mkdir -p /etc/ssh /root/.ssh && chmod 0700 /root/.ssh
CMD ["/sbin/tini", "/usr/bin/ssh.sh"]
LABEL org.mobyproject.config='{"pid": "host", "binds": ["/root/.ssh:/root/.ssh", "/etc/resolv.conf:/etc/resolv.conf"], "capabilities": ["all"]}'
LABEL org.mobyproject.config='{"pid": "host", "binds": ["/tmp:/tmp", "/root/.ssh:/root/.ssh", "/etc/resolv.conf:/etc/resolv.conf"], "capabilities": ["all"]}'