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OCPBUGS-78090: Avoid copy of the oc binary, to support heterogeneous environments #30992

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OCPBUGS-78090: Avoid copy of the oc binary, to support heterogeneous environments #30992

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Avoid copy of the oc binary, which can fail in heterogeneous environm…
jogeo Apr 9, 2026
a854b14
Resolve Code Rabbit comments.
jogeo Apr 9, 2026
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28 changes: 18 additions & 10 deletions test/extended/apiserver/kubeconfigs.go
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Original file line number Diff line number Diff line change
Expand Up @@ -112,17 +112,25 @@ func testKubeApiserverContainer(oc *exutil.CLI, kubeconfig, masterName string) e
return fmt.Errorf("location for %s kubeconfig not found", kubeconfig)
}

framework.Logf("Copying oc binary from host to kube-apiserver container in master %q", masterName)
out, err := oc.AsAdmin().Run("debug").Args("node/"+masterName, "--", "chroot", "/host", "/bin/bash", "-euxo", "pipefail", "-c",
fmt.Sprintf(`oc --kubeconfig /etc/kubernetes/static-pod-resources/kube-apiserver-certs/secrets/node-kubeconfigs/localhost.kubeconfig -n openshift-kube-apiserver cp /usr/bin/oc kube-apiserver-%s:/tmp`, masterName)).Output()
framework.Logf("%s", out)
if err != nil {
return fmt.Errorf("%s", out)
}

framework.Logf("Verifying kubeconfig %q in kube-apiserver container in master %q", kubeconfig, masterName)
out, err = oc.AsAdmin().Run("exec").Args("-n", "openshift-kube-apiserver", "kube-apiserver-"+masterName, "--", "/bin/bash", "-euxo", "pipefail", "-c",
fmt.Sprintf(`/tmp/oc --kubeconfig "%s" get nodes`, kubeconfigPath)).Output()
// Use curl to verify the kubeconfig is present and functional, extracting
// cert paths directly from the kubeconfig file. This avoids copying the oc
// binary from the host into the container, which fails when the host OS
// (e.g., RHCOS 10 with glibc 2.38) has a newer glibc than the container.
out, err := oc.AsAdmin().Run("exec").Args("-n", "openshift-kube-apiserver", "kube-apiserver-"+masterName, "--", "/bin/bash", "-euxo", "pipefail", "-c",
fmt.Sprintf(`for k in server client-certificate client-key certificate-authority; do
count=$(grep -Ec "^\s*${k}:\s+" "%[1]s")
[ "$count" -eq 1 ] || { echo "expected exactly one ${k} in %[1]s, got $count" >&2; exit 1; }
done
server=$(grep '^\s*server:' "%[1]s" | head -1 | awk '{print $2}')
cert=$(grep '^\s*client-certificate:' "%[1]s" | head -1 | awk '{print $2}')
key=$(grep '^\s*client-key:' "%[1]s" | head -1 | awk '{print $2}')
ca=$(grep '^\s*certificate-authority:' "%[1]s" | head -1 | awk '{print $2}')
for v in server cert key ca; do
eval "val=\$$v"
[ -n "$val" ] || { echo "${v} field extraction failed from %[1]s" >&2; exit 1; }
done
curl -Ssf --cert "$cert" --key "$key" --cacert "$ca" "${server}/api?timeout=32s"`, kubeconfigPath)).Output()
framework.Logf("%s", out)
if err != nil {
return fmt.Errorf("%s", out)
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