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RHEL AtomicDebian (stable-slim)UbuntuMinidebAlpineAmazon Linux 2CentOSDebian StablePhusion (Ubuntu)Centos Buildah (No Yum)Centos Buildah (With Yum)
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C Libraryglibcglibcglibcglibcmusl cglibcglibcglibcglibcglibcglibc
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Packaging Formatrpmdpkgdpkgdpkgapkrpmrpmdpkgdpkg--
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Core UtilitiesGNU Core UtilsGNU Core UtilsGNU Core UtilsGNU Core UtilsBusyboxGNU Core UtilsGNU Core UtilsGNU Core UtilsGNU Core UtilsGNU Core UtilsGNU Core Utils
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Size Across Wire31.17MB22.49MB31.76MB22.05MB2.20MB61.63MB72MB45MB100+MB23.02MB-
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Size on Disk78.4MB55.3MB81.4MB53.7MB4.41MB163MB192MB100MB209MB56.4MB120MB
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Life Cycle6 months-5 years--5 yearvariable2 years---
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Compatibility GuaranteesGenerally within minor version-Generally within minor version---Follows RHELGenerally within minor version---
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Troubleshooting ToolsIntegrated with Technical SupportStandard PackagesStandard PackagesStandard PackagesStandard Packages-Tools ContainerStandard PackagesStandard Packages--
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Technical SupportCommercial & CommunityCommunityCommercial & CommunityCommunityCommunityCommercialCommunityCommunityCommunityCommunityCommunity
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ISV SupportLarge CommercialCommunityLarge CommunityCommunitySmall CommunityCommercialCommunityCommunitySmall CommunityCommunityCommunity
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UpdatesCommercialCommunityCommunityCommunityCommunityCommercialCommunityCommunityCommunityCommunityCommunity
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TrackingOVAL Data,CVE Database, VulnerabilityAPI & Errata,Lab ToolsOVAL Data, CVE Database, & ErrataOVAL Data, CVE Database, & ErrataOVAL Data, CVE Database, & ErrataLimited DatabaseAnnounce List, ErrataAnnounce List, Errata
OVAL Data, CVE Database, & Errata
OVAL Data, CVE Database, & Errata-Announce List, Errata
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Security Response TeamCommercial & CommunityCommunityCommercial & CommunityCommunity-CommunityNoneCommunityCommercial & CommunityCommunityCommunity
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Automated TestingCommercial--------
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Performance Engineering TeamCommercialCommunityCommunityCommunityCommunityCommunityNoneNone FoundCommunityCommunityCommunity
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Docker Pull
registry.access.redhat.com/rhel-atomic
debian:stable-slimubuntubitnami/minidebalpine-CommunityCommunityphusion/baseimagetdudgeon/centos-base-
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NotesThis really needs a Redhat subscription in order to get the packages and access to the CVE database.Official debian repo is constantly improving and now quite smallSlightly bigger than Minideb but seems to have the same security benefits.Small and has CVE database. Built every 24 hours with security patches. Offical Debian container has closed the gap on size.Small but cannot use open source vulnerability scanners as the CVE database is limited.Amazon Inspector can be used to scanThis is quite large compared to the newer generation of images. Also lacks CVE database.There is a slim version so no need to use this.This is quite large compared to the newer generation of images. It does have some interesting fixes inside but I'm not sure they are applicable for running applications in containers under Kubernetes.No Yum means can't scan easily with the various open source scanners.This is approximately half the size of the standard Centos (200MB). Has a smaller surface area and can be scanned. No CVE Database though.
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Sources
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Redhat Source
http://crunchtools.com/comparison-linux-container-images/
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Atomic
https://www.reddit.com/r/redhat/comments/9evo02/rhel7_atomic_base_image_free_to_use/e5s7vp9/
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Centos Buildah
https://www.informaticsmatters.com/blog/2018/04/04/smaller-containers-part-3.html
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Ubuntu minimal
https://blog.ubuntu.com/2018/07/09/minimal-ubuntu-released
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Minideb
https://news.ycombinator.com/item?id=15285402
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Mindeb Comparison
https://dzone.com/articles/minideb-a-minimalist-debian-based-docker-image
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