e0fedec69d
Currently `kubectl debug` only supports passing names in command line. However, users might want to pass resources in files by passing `-f` flag like in all other kubectl commands. This PR adds this ability.
127 lines
6.3 KiB
Bash
Executable File
127 lines
6.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2020 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -o errexit
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set -o nounset
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set -o pipefail
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run_kubectl_debug_pod_tests() {
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set -o nounset
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set -o errexit
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create_and_use_new_namespace
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kube::log::status "Testing kubectl debug (pod tests)"
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### Pod Troubleshooting by ephemeral containers
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# Pre-Condition: Pod "nginx" is created
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kubectl run target "--image=${IMAGE_NGINX:?}" "${kube_flags[@]:?}"
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kube::test::get_object_assert pod "{{range.items}}{{${id_field:?}}}:{{end}}" 'target:'
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# Command: create a copy of target with a new debug container
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kubectl debug target -it --image=busybox --attach=false -c debug-container "${kube_flags[@]:?}"
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# Post-Conditions
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kube::test::get_object_assert pod/target '{{range.spec.ephemeralContainers}}{{.name}}:{{end}}' 'debug-container:'
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# Clean up
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kubectl delete pod target "${kube_flags[@]:?}"
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### Pod Troubleshooting by Copy
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# Pre-Condition: Pod "nginx" is created
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kubectl run target "--image=${IMAGE_NGINX:?}" "${kube_flags[@]:?}"
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kube::test::get_object_assert pod "{{range.items}}{{${id_field:?}}}:{{end}}" 'target:'
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# Command: create a copy of target with a new debug container
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kubectl debug target -it --copy-to=target-copy --image=busybox --container=debug-container --attach=false "${kube_flags[@]:?}"
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# Post-Conditions
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kube::test::get_object_assert pod "{{range.items}}{{${id_field:?}}}:{{end}}" 'target:target-copy:'
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kube::test::get_object_assert pod/target-copy '{{range.spec.containers}}{{.name}}:{{end}}' 'target:debug-container:'
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kube::test::get_object_assert pod/target-copy '{{range.spec.containers}}{{.image}}:{{end}}' "${IMAGE_NGINX:?}:busybox:"
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# Clean up
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kubectl delete pod target target-copy "${kube_flags[@]:?}"
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# Pre-Condition: Pod "nginx" is created
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kubectl run target "--image=${IMAGE_NGINX:?}" "${kube_flags[@]:?}"
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kube::test::get_object_assert pod "{{range.items}}{{${id_field:?}}}:{{end}}" 'target:'
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# Command: create a copy of target with a new debug container replacing the previous pod
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kubectl debug target -it --copy-to=target-copy --image=busybox --container=debug-container --attach=false --replace "${kube_flags[@]:?}"
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# Post-Conditions
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kube::test::get_object_assert pod "{{range.items}}{{${id_field:?}}}:{{end}}" 'target-copy:'
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kube::test::get_object_assert pod/target-copy '{{range.spec.containers}}{{.name}}:{{end}}' 'target:debug-container:'
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kube::test::get_object_assert pod/target-copy '{{range.spec.containers}}{{.image}}:{{end}}' "${IMAGE_NGINX:?}:busybox:"
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# Clean up
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kubectl delete pod target-copy "${kube_flags[@]:?}"
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# Pre-Condition: Pod "nginx" is created
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kubectl run target "--image=${IMAGE_NGINX:?}" "${kube_flags[@]:?}"
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kube::test::get_object_assert pod "{{range.items}}{{${id_field:?}}}:{{end}}" 'target:'
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kube::test::get_object_assert pod/target '{{(index .spec.containers 0).name}}' 'target'
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# Command: copy the pod and replace the image of an existing container
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kubectl debug target --image=busybox --container=target --copy-to=target-copy "${kube_flags[@]:?}" -- sleep 1m
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# Post-Conditions
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kube::test::get_object_assert pod "{{range.items}}{{${id_field:?}}}:{{end}}" 'target:target-copy:'
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kube::test::get_object_assert pod/target-copy "{{(len .spec.containers)}}:{{${image_field:?}}}" '1:busybox'
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# Clean up
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kubectl delete pod target target-copy "${kube_flags[@]:?}"
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# Pre-Condition: Pod "nginx" is created
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kubectl run target "--image=${IMAGE_NGINX:?}" "${kube_flags[@]:?}"
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kube::test::get_object_assert pod "{{range.items}}{{${id_field:?}}}:{{end}}" 'target:'
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kube::test::get_object_assert pod/target '{{(index .spec.containers 0).name}}' 'target'
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# Command: copy the pod and replace the image of an existing container
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kubectl get pod/target -o yaml > "${KUBE_TEMP}"/test-pod-debug.yaml
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kubectl debug -f "${KUBE_TEMP}"/test-pod-debug.yaml --image=busybox --container=target --copy-to=target-copy "${kube_flags[@]:?}" -- sleep 1m
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# Post-Conditions
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kube::test::get_object_assert pod "{{range.items}}{{${id_field:?}}}:{{end}}" 'target:target-copy:'
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kube::test::get_object_assert pod/target-copy "{{(len .spec.containers)}}:{{${image_field:?}}}" '1:busybox'
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# Clean up
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kubectl delete pod target target-copy "${kube_flags[@]:?}"
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set +o nounset
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set +o errexit
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}
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run_kubectl_debug_node_tests() {
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set -o nounset
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set -o errexit
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create_and_use_new_namespace
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kube::log::status "Testing kubectl debug (pod tests)"
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### Node Troubleshooting by Privileged Container
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# Pre-Condition: Pod "nginx" is created
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kube::test::get_object_assert nodes "{{range.items}}{{${id_field:?}}}:{{end}}" '127.0.0.1:'
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# Command: create a new node debugger pod
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output_message=$(kubectl debug node/127.0.0.1 --image=busybox --attach=false "${kube_flags[@]:?}" -- true)
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# Post-Conditions
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kube::test::get_object_assert pod "{{(len .items)}}" '1'
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debugger=$(kubectl get pod -o go-template="{{(index .items 0)${id_field:?}}}")
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kube::test::if_has_string "${output_message:?}" "${debugger:?}"
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kube::test::get_object_assert "pod/${debugger:?}" "{{${image_field:?}}}" 'busybox'
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kube::test::get_object_assert "pod/${debugger:?}" '{{.spec.nodeName}}' '127.0.0.1'
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kube::test::get_object_assert "pod/${debugger:?}" '{{.spec.hostIPC}}' 'true'
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kube::test::get_object_assert "pod/${debugger:?}" '{{.spec.hostNetwork}}' 'true'
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kube::test::get_object_assert "pod/${debugger:?}" '{{.spec.hostPID}}' 'true'
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kube::test::get_object_assert "pod/${debugger:?}" '{{(index (index .spec.containers 0).volumeMounts 0).mountPath}}' '/host'
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kube::test::get_object_assert "pod/${debugger:?}" '{{(index .spec.volumes 0).hostPath.path}}' '/'
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# Clean up
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# pod.spec.nodeName is set by kubectl debug node which causes the delete to hang,
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# presumably waiting for a kubelet that's not present. Force the delete.
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kubectl delete --force pod "${debugger:?}" "${kube_flags[@]:?}"
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set +o nounset
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set +o errexit
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}
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