openstack/openstack-helm-infra
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HTK: Refactor kubernetes security_context macro(s) to allow scoping

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This PS updates the kubernetes_pod_security_context snippet, and adds a
macro for container securityContexts
'kubernetes_container_security_context.

Change-Id: I8b9c7b72f836efaf6c9dc3ad20fd8462b0d06d77
Signed-off-by: Pete Birley <pete@port.direct>
This commit is contained in:
Pete Birley 2019-02-15 20:16:29 -06:00 committed by Pete Birley
parent 2eb745d53a
commit 9ec2910151
2 changed files with 88 additions and 19 deletions
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50
helm-toolkit/templates/snippets/_kubernetes_container_security_context.tpl Normal file
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@ -0,0 +1,50 @@
{{/*
Copyright 2017-2018 The Openstack-Helm Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/}}
{{/*
abstract: |
Renders securityContext for a Kubernetes container.
For container level, see here: https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.13/#securitycontext-v1-core
examples:
- values: |
pod:
security_context:
myApp:
container:
foo:
runAsUser: 34356
readOnlyRootFilesystem: true
usage: |
{{ dict "envAll" . "application" "myApp" "container" "foo" | include "helm-toolkit.snippets.kubernetes_container_security_context" }}
return: |
securityContext:
readOnlyRootFilesystem: true
runAsUser: 34356
*/}}
{{- define "helm-toolkit.snippets.kubernetes_container_security_context" -}}
{{- $envAll := index . "envAll" -}}
{{- $application := index . "application" -}}
{{- $container := index . "container" -}}
{{- if hasKey $envAll.Values.pod "security_context" }}
{{- if hasKey ( index $envAll.Values.pod.security_context ) $application }}
{{- if hasKey ( index $envAll.Values.pod.security_context $application "container" ) $container }}
securityContext:
{{ toYaml ( index $envAll.Values.pod.security_context $application "container" $container ) | indent 2 }}
{{- end -}}
{{- end -}}
{{- end -}}
{{- end -}}

57
helm-toolkit/templates/snippets/_kubernetes_pod_security_context.tpl
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@ -17,34 +17,53 @@ limitations under the License.
{{/*
abstract: |
Renders securityContext for a Kubernetes pod.
values: |
pod:
user:
myApp:
uid: 34356
security_context:
myApp:
readOnlyRootFilesystem: true
seLinuxOptions:
level: "s0:c123,c456"
usage: |
{{ dict "envAll" . "application" "myApp" | include "helm-toolkit.snippets.kubernetes_pod_security_context" }}
return: |
securityContext:
runAsUser: 34356
readOnlyRootFilesystem: true
seLinuxOptions:
level: s0:c123,c456
For pod level, seurity context see here: https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.13/#podsecuritycontext-v1-core
examples:
- values: |
pod:
# NOTE: The 'user' key is deprecated, and will be removed shortly.
user:
myApp:
uid: 34356
security_context:
myApp:
pod:
runAsNonRoot: true
usage: |
{{ dict "envAll" . "application" "myApp" | include "helm-toolkit.snippets.kubernetes_pod_security_context" }}
return: |
securityContext:
runAsUser: 34356
runAsNonRoot: true
- values: |
pod:
security_context:
myApp:
pod:
runAsUser: 34356
runAsNonRoot: true
usage: |
{{ dict "envAll" . "application" "myApp" | include "helm-toolkit.snippets.kubernetes_pod_security_context" }}
return: |
securityContext:
runAsNonRoot: true
runAsUser: 34356
*/}}
{{- define "helm-toolkit.snippets.kubernetes_pod_security_context" -}}
{{- $envAll := index . "envAll" -}}
{{- $application := index . "application" -}}
securityContext:
{{- if hasKey $envAll.Values.pod "user" }}
{{- if hasKey $envAll.Values.pod.user $application }}
{{- if hasKey ( index $envAll.Values.pod.user $application ) "uid" }}
runAsUser: {{ index $envAll.Values.pod.user $application "uid" }}
{{- end -}}
{{- end -}}
{{- end -}}
{{- if hasKey $envAll.Values.pod "security_context" }}
{{- if hasKey ( index $envAll.Values.pod.security_context ) $application }}
{{ toYaml ( index $envAll.Values.pod.security_context $application ) | indent 2 }}
{{ toYaml ( index $envAll.Values.pod.security_context $application "pod" ) | indent 2 }}
{{- end -}}
{{- end -}}
{{- end -}}