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podman: tries to create directories in /var while being rootless #2510

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tobwen opened this issue Mar 3, 2019 · 9 comments
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podman: tries to create directories in /var while being rootless #2510

tobwen opened this issue Mar 3, 2019 · 9 comments
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@giuseppe
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@tobwen
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tobwen commented Mar 3, 2019 •
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/kind bug

Description
When trying to run podman rootless with --log-level=debug this message occures.

DEBU[0000] Error creating parent directories for blob-info-cache-v1.boltdb, using a memory-only cache: mkdir /var/lib/containers/cache: permission denied

Expected
podman shouldn't try to write to /var/lib/containers/cache when it's in rootless mode.

Might be connected with #2508
@openshift-ci-robot openshift-ci-robot added the kind/bug Categorizes issue or PR as related to a bug. label Mar 3, 2019
@mheon
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mheon commented Mar 3, 2019

It seems like some paths might be set incorrectly - we should be using paths exclusively under /home with the default configuration.

@mheon
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mheon commented Mar 3, 2019

Possibly related to #2508 - both of them seem to be failing to detect that we're rootless and adjust paths to appropriate defaults

@giuseppe giuseppe mentioned this issue Mar 5, 2019
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@giuseppe
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giuseppe commented Mar 5, 2019

PR here: #2537

giuseppe added a commit to giuseppe/libpod that referenced this issue Mar 5, 2019
@giuseppe
rootless: fill in correct storage conf default
2ac7991 
When the configuration file is specified, be sure to fill rootless
compatible values in the default configuration.

Closes: containers#2510

Signed-off-by: Giuseppe Scrivano <[email protected]>
@tobwen
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tobwen commented Apr 4, 2019 •
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It's alive again on rootless.

$ podman --version
podman version 1.3.0-dev

$ podman ...
[...]
DEBU[0000] Error creating parent directories for blob-info-cache-v1.boltdb, using a memory-only cache: mkdir /var/lib/containers: permission denied
[...]

$ ls -al /var/lib/containers
ls: cannot access '/var/lib/containers': No such file or directory

@rhatdan
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rhatdan commented Apr 4, 2019

@giuseppe Anything to do with your rootless merge?

@mheon
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mheon commented Apr 4, 2019

I would bet this was the big rootless single userns patch that just merged.

@giuseppe
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giuseppe commented Apr 5, 2019

this is related to a change in containers/image where we use os.Geteuid() inside of a user namespace

giuseppe added a commit to giuseppe/image that referenced this issue Apr 5, 2019
@giuseppe
blobinfocache: correctly detect the UID in a namespace
1802aab 
for tools in containers/ we are using the env variable
_CONTAINERS_ROOTLESS_UID when running in a user namespace to refer to
the rootless UID that created the user namespace.

Closes: containers/podman#2510 (comment)

Signed-off-by: Giuseppe Scrivano <[email protected]>
@giuseppe giuseppe mentioned this issue Apr 5, 2019
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giuseppe commented Apr 5, 2019

PR: containers/image#612

@TomasTomecek
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also got bitten by this; will we get a new release soon?

@TomasTomecek TomasTomecek mentioned this issue Apr 13, 2019
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@giuseppe @TomasTomecek @tobwen @rhatdan @mheon @openshift-ci-robot