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Only drop capabilities that are not added #3972

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merged 3 commits into from
Sep 25, 2024
Merged

Only drop capabilities that are not added #3972

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d659eae
Only drop capabilities that are not added
nemacysts Sep 25, 2024
849179d
Update security context tests
nemacysts Sep 25, 2024
5fa4cd1
this is definitely containerd
nemacysts Sep 25, 2024
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11 changes: 10 additions & 1 deletion paasta_tools/kubernetes_tools.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1396,7 +1396,16 @@ def get_security_context(self) -> Optional[V1SecurityContext]:
return V1SecurityContext(capabilities=V1Capabilities(drop=CAPS_DROP))
else:
return V1SecurityContext(
capabilities=V1Capabilities(add=cap_add, drop=CAPS_DROP)
# XXX: we should probably generally work in sets, but V1Capabilities is typed as accepting
# lists of string only
capabilities=V1Capabilities(
add=cap_add,
# NOTE: this is necessary as containerd differs in behavior from dockershim: in dockershim
# dropped capabilities were overriden if the same capability was added - but in containerd
# the dropped capabilities appear to have higher priority.
# (or maybe this is a k8s behavior change?)
drop=list(set(CAPS_DROP) - set(cap_add)),
)
)

def get_kubernetes_containers(
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