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https://issues.apache.org/jira/browse/SPARK-35885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17448124#comment-17448124
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Dongjoon Hyun commented on SPARK-35885:
---------------------------------------
Thank you for reporting, [~mn-mikke].
> Use keyserver.ubuntu.com as a keyserver for CRAN
> ------------------------------------------------
>
> Key: SPARK-35885
> URL: https://issues.apache.org/jira/browse/SPARK-35885
> Project: Spark
> Issue Type: Bug
> Components: Kubernetes, R
> Affects Versions: 3.0.3, 3.1.2, 3.2.0
> Reporter: Dongjoon Hyun
> Assignee: Dongjoon Hyun
> Priority: Blocker
> Fix For: 3.2.0, 3.1.3, 3.0.4
>
>
> This issue aims to use `keyserver.ubuntu.com` as a keyserver for CRAN.
> K8s SparkR docker image build fails because both servers don't work correctly.
> {code}
> $ docker run -it --rm openjdk:11 /bin/bash
> root@3e89a8d05378:/# echo "deb http://cloud.r-project.org/bin/linux/debian
> buster-cran35/" >> /etc/apt/sources.list
> root@3e89a8d05378:/# (apt-key adv --keyserver keys.gnupg.net --recv-key
> 'E19F5F87128899B192B1A2C2AD5F960A256A04AF' || apt-key adv --keyserver
> keys.openpgp.org --recv-key 'E19F5F87128899B192B1A2C2AD5F960A256A04AF')
> Executing: /tmp/apt-key-gpghome.8lNIiUuhoE/gpg.1.sh --keyserver
> keys.gnupg.net --recv-key E19F5F87128899B192B1A2C2AD5F960A256A04AF
> gpg: keyserver receive failed: No name
> Executing: /tmp/apt-key-gpghome.stxb8XUlx8/gpg.1.sh --keyserver
> keys.openpgp.org --recv-key E19F5F87128899B192B1A2C2AD5F960A256A04AF
> gpg: key AD5F960A256A04AF: new key but contains no user ID - skipped
> gpg: Total number processed: 1
> gpg: w/o user IDs: 1
> root@3e89a8d05378:/# apt-get update
> ...
> Err:3 http://cloud.r-project.org/bin/linux/debian buster-cran35/ InRelease
> The following signatures couldn't be verified because the public key is not
> available: NO_PUBKEY FCAE2A0E115C3D8A
> ...
> W: GPG error: http://cloud.r-project.org/bin/linux/debian buster-cran35/
> InRelease: The following signatures couldn't be verified because the public
> key is not available: NO_PUBKEY FCAE2A0E115C3D8A
> E: The repository 'http://cloud.r-project.org/bin/linux/debian buster-cran35/
> InRelease' is not signed.
> N: Updating from such a repository can't be done securely, and is therefore
> disabled by default.
> N: See apt-secure(8) manpage for repository creation and user configuration
> details.
> {code}
> `keyserver.ubuntu.com` is a recommended backup server in CRAN document.
> - http://cloud.r-project.org/bin/linux/debian/
> {code}
> $ docker run -it --rm openjdk:11 /bin/bash
> root@c9b183e45ffe:/# echo "deb http://cloud.r-project.org/bin/linux/debian
> buster-cran35/" >> /etc/apt/sources.list
> root@c9b183e45ffe:/# apt-key adv --keyserver keyserver.ubuntu.com --recv-key
> 'E19F5F87128899B192B1A2C2AD5F960A256A04AF'
> Executing: /tmp/apt-key-gpghome.P6cxYkOge7/gpg.1.sh --keyserver
> keyserver.ubuntu.com --recv-key E19F5F87128899B192B1A2C2AD5F960A256A04AF
> gpg: key AD5F960A256A04AF: public key "Johannes Ranke (Wissenschaftlicher
> Berater) <johannes.ra...@jrwb.de>" imported
> gpg: Total number processed: 1
> gpg: imported: 1
> root@c9b183e45ffe:/# apt-get update
> Get:1 http://deb.debian.org/debian buster InRelease [122 kB]
> Get:2 http://security.debian.org/debian-security buster/updates InRelease
> [65.4 kB]
> Get:3 http://cloud.r-project.org/bin/linux/debian buster-cran35/ InRelease
> [4375 B]
> Get:4 http://deb.debian.org/debian buster-updates InRelease [51.9 kB]
> Get:5 http://cloud.r-project.org/bin/linux/debian buster-cran35/ Packages
> [53.3 kB]
> Get:6 http://security.debian.org/debian-security buster/updates/main arm64
> Packages [287 kB]
> Get:7 http://deb.debian.org/debian buster/main arm64 Packages [7735 kB]
> Get:8 http://deb.debian.org/debian buster-updates/main arm64 Packages [14.5
> kB]
> Fetched 8334 kB in 2s (4537 kB/s)
> Reading package lists... Done
> {code}
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