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docs: add security and resources page for Talos Containers - #891
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Add a how-to page to the v1.14 and v1.15 docs covering the security side of a ContainerConfig document: the restricted and privileged profiles, adding and dropping capabilities, runAs, and Talos API access with machinedAccess. The machinedAccess section states what the setting does and what it does not: it mounts the machined socket and lets the container request any role, but the socket is owned by the apid user, so the container also needs runAs 50, DAC_OVERRIDE, or the privileged profile. Resource limits, networking, and startup order have their own pages. Part of siderolabs#885 Signed-off-by: Amarachi Iheanacho <amarachi.iheanacho@siderolabs.com>
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What
Adds "Configure Security and Resources for a Talos Container", a how-to page, to the v1.14 and v1.15 docs.
Part of #885. This is the security and resources half. Startup order and networking will be a separate page once siderolabs/talos#14731 lands.
Why
#885 is split into two pages, and only the startup half depends on the
networksrename. This half can merge now.Change
talos-containers/configure-security-and-resources.mdxin v1.14 and v1.15, covering:restrictedandprivilegedprofilesrunAsmachinedAccessmachinedAccesssection opens with a warning: a container with the setting can request any role.runAs50,DAC_OVERRIDE, orprivileged.WorkloadResourceConfigandCPUPartitionConfigfor limiting all containers together.@majabojarska, two hidden TODOs need your confirmation:
machinedAccess.runAs. Talos sets no ambient capabilities.Testing
style-check-changed-local,check-frontmatter-changed,canonical-links-check.AllGrantableCapabilitiescpu.maxandmemory.maxmappingprivilegedexcludesSYS_BOOTandSYS_MODULE, which the reference doesn't mention.