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ssh/communicator_test fails in 2030 #21727

bmwiedemann opened this issue Jun 14, 2019 · 0 comments


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commented Jun 14, 2019

Terraform Version


Expected Behavior

build+tests should succeed anytime in the future

Actual Behavior

build fails in 2030

Debug Output

2034/07/16 21:34:21 [WARN] ssh: handshake failed: ssh: cert has expired
--- FAIL: TestHostCert (0.00s)
    communicator_test.go:340: ssh: handshake failed: ssh: cert has expired

Steps to Reproduce

in openSUSE or Debian do

osc co openSUSE:Factory/terraform ; cd $_
osc build --build-opt=--vm-custom-opt="--rtc base=2030-02-01T00:00:00" --noservice --vm-type=kvm --clean

Additional Context

Using ssh-keygen -L -f $FILE to decode the cert in ./communicator/ssh/communicator_test.go line 57 shows the expiry of 2030-01-01T05:00

        Type: host certificate
        Public key: RSA-CERT SHA256:NaCSsxvUtzC+lJK7JLwZ/8FojyAKpGXAJUs51ZqRnOE
        Signing CA: RSA SHA256:6IVexLqB3lfZtvBUi29wV0Mw/R3Qk4YMSjCsTgtKM/c
        Key ID: "ca-test"
        Serial: 0
        Valid: from 2018-02-13T20:21:56 to 2030-01-01T05:00:00

This bug was found while working on reproducible builds for openSUSE.

As part of my work on reproducible builds for openSUSE, I check that software still gives identical build results in the future.
The usual offset is +15 years, because that is how long I expect some software will be used in some places.
This showed up failing tests in our package build.
See for why this matters.

@mildwonkey mildwonkey added the build label Jun 20, 2019

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