Add alternate name support for the socket (#181)
* Add alternate name support for the socket Signed-off-by: Kevin Fox <[email protected]> * Fix missing image reference Signed-off-by: Kevin Fox <[email protected]> * Make user changing socket work smoothly. Signed-off-by: Kevin Fox <[email protected]> * Apply suggestions from code review Signed-off-by: kfox1111 <[email protected]> * Update charts/spire/charts/spire-agent/values.yaml Signed-off-by: kfox1111 <[email protected]> --------- Signed-off-by: Kevin Fox <[email protected]> Signed-off-by: kfox1111 <[email protected]> Co-authored-by: Faisal Memon <[email protected]>
This commit is contained in:
kfox1111
@@ -88,6 +88,12 @@ A Helm chart to install the SPIRE agent.
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| `telemetry.prometheus.podMonitor.labels` | Pod labels to filter for prometheus monitoring | `{}` |
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| `kubeletConnectByHostname` | If true, connect to kubelet using the nodes hostname. If false, uses localhost. If unset, defaults to true on OpenShift and false otherwise. | `""` |
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| `socketPath` | The unix socket path to the spire-agent | `/run/spire/agent-sockets/spire-agent.sock` |
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| `socketAlternate.names` | List of alternate names for the socket that workloads might expect to be able to access in the driver mount. | `["socket","spire-agent.sock","api.sock"]` |
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| `socketAlternate.image.registry` | The OCI registry to pull the image from | `cgr.dev` |
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| `socketAlternate.image.repository` | The repository within the registry | `chainguard/bash` |
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| `socketAlternate.image.pullPolicy` | The image pull policy | `Always` |
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| `socketAlternate.image.tag` | Overrides the image tag whose default is the chart appVersion | `latest@sha256:07d2662ef699e9ceafab3f39624083193dfcb7b768ee86860dbdd5cb4473dcea` |
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| `socketAlternate.resources` | Specify resource needs as per https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/ | `{}` |
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| `priorityClassName` | Priority class assigned to daemonset pods. Can be auto set with global.recommendations.priorityClassName. | `""` |
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| `extraEnvVars` | Extra environment variables to be added to the Spire Agent container | `[]` |
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| `extraVolumes` | Extra volumes to be mounted on Spire Agent pods | `[]` |
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@@ -125,3 +125,11 @@ Create the name of the service account to use
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{{- printf "false" }}
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{{- end }}
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{{- end }}
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{{- define "spire-agent.socket-alternate-names" -}}
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{{- $sockName := .Values.socketPath | base }}
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{{- $l := deepCopy .Values.socketAlternate.names }}
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{{- $l = without $l $sockName }}
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names:
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{{ $l | toYaml }}
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{{- end }}
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@@ -24,7 +24,7 @@ agent:
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log_level: {{ .Values.logLevel | quote }}
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server_address: {{ include "spire-agent.server-address" . | trim | quote }}
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server_port: {{ .Values.server.port | quote }}
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socket_path: {{ include "spire-agent.socket-path" . | quote }}
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socket_path: /tmp/spire-agent/public/{{ include "spire-agent.socket-path" . | base }}
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{{- if ne (len .Values.trustBundleURL) 0 }}
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trust_bundle_url: {{ .Values.trustBundleURL | quote }}
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trust_bundle_format: {{ .Values.trustBundleFormat | quote }}
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@@ -1,6 +1,8 @@
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{{- $configSum := (include (print $.Template.BasePath "/configmap.yaml") . | sha256sum) }}
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{{- $podSecurityContext := fromYaml (include "spire-lib.podsecuritycontext" .) }}
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{{- $cbh := eq (include "spire-agent.connect-by-hostname" .) "true" }}
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{{- $socketAlternateNames := index (include "spire-agent.socket-alternate-names" . | fromYaml) "names" }}
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{{- $socketPath := include "spire-agent.socket-path" . }}
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apiVersion: apps/v1
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kind: DaemonSet
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metadata:
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@@ -50,18 +52,43 @@ spec:
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{{- toYaml .Values.waitForIt.resources | nindent 12 }}
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securityContext:
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{{ toYaml .Values.securityContext | nindent 12 }}
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{{- if gt (len $socketAlternateNames) 0 }}
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- name: ensure-alternate-names
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image: {{ template "spire-lib.image" (dict "image" .Values.socketAlternate.image "global" .Values.global) }}
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imagePullPolicy: {{ .Values.socketAlternate.image.pullPolicy }}
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command: ["bash", "-xc"]
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{{/* 1. Look for symlinks pointing at the wrong place and remove them. 2. Make symlinks that don't exist. 3. If new socket is pointing at an existing symlink, remove old symlink. */}}
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args:
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- |
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cd {{ $socketPath | dir }}
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{{- range $socketAlternateNames }}
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L=`readlink {{ . }}`
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[ "x$L" != "x{{ $socketPath | base}}" ] && rm -f {{ . }}
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[ ! -L {{ . }} ] && ln -s {{ $socketPath | base }} {{ . }}
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{{- end }}
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[ -L {{ $socketPath | base }} ] && rm -f {{ $socketPath | base }}
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exit 0
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resources:
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{{- toYaml .Values.socketAlternate.resources | nindent 12 }}
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volumeMounts:
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- name: spire-agent-socket-dir
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mountPath: {{ $socketPath | dir }}
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securityContext:
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runAsUser: 0
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runAsGroup: 0
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{{- end }}
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{{- if gt (int (dig "fsGroup" 0 $podSecurityContext)) 0 }}
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- name: fsgroupfix
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image: {{ template "spire-lib.image" (dict "image" .Values.fsGroupFix.image "global" .Values.global) }}
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imagePullPolicy: {{ .Values.fsGroupFix.image.pullPolicy }}
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command: ["bash", "-c"]
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args:
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- "chown -R {{ $podSecurityContext.runAsUser }}:{{ $podSecurityContext.fsGroup }} {{ include "spire-agent.socket-path" . | dir }}"
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- "chown -R {{ $podSecurityContext.runAsUser }}:{{ $podSecurityContext.fsGroup }} {{ $socketPath | dir }}"
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resources:
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{{- toYaml .Values.fsGroupFix.resources | nindent 12 }}
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volumeMounts:
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- name: spire-agent-socket-dir
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mountPath: {{ include "spire-agent.socket-path" . | dir }}
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mountPath: {{ $socketPath | dir }}
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securityContext:
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runAsUser: 0
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runAsGroup: 0
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@@ -73,7 +100,7 @@ spec:
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- name: {{ .Chart.Name }}
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image: {{ template "spire-lib.image" (dict "appVersion" $.Chart.AppVersion "image" .Values.image "global" .Values.global) }}
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imagePullPolicy: {{ .Values.image.pullPolicy }}
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args: ["-config", "/run/spire/config/agent.conf"]
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args: ["-config", "/opt/spire/conf/agent/agent.conf"]
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securityContext:
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{{ toYaml .Values.securityContext | nindent 12 }}
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env:
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@@ -97,7 +124,7 @@ spec:
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{{- end }}
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volumeMounts:
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- name: spire-config
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mountPath: /run/spire/config
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mountPath: /opt/spire/conf/agent
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readOnly: true
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{{- if eq (len .Values.trustBundleURL) 0 }}
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- name: spire-bundle
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@@ -105,7 +132,7 @@ spec:
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readOnly: true
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{{- end }}
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- name: spire-agent-socket-dir
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mountPath: {{ include "spire-agent.socket-path" . | dir }}
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mountPath: /tmp/spire-agent/public
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readOnly: false
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- name: spire-token
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mountPath: /var/run/secrets/tokens
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@@ -153,7 +180,7 @@ spec:
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audience: spire-server
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- name: spire-agent-socket-dir
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hostPath:
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path: {{ include "spire-agent.socket-path" . | dir }}
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path: {{ $socketPath | dir }}
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type: DirectoryOrCreate
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{{- if gt (len .Values.extraVolumes) 0 }}
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{{- toYaml .Values.extraVolumes | nindent 8 }}
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@@ -210,6 +210,27 @@ kubeletConnectByHostname: ""
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## @param socketPath The unix socket path to the spire-agent
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socketPath: /run/spire/agent-sockets/spire-agent.sock
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socketAlternate:
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## @param socketAlternate.names List of alternate names for the socket that workloads might expect to be able to access in the driver mount.
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names:
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- socket
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- spire-agent.sock
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- api.sock
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## @param socketAlternate.image.registry The OCI registry to pull the image from
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## @param socketAlternate.image.repository The repository within the registry
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## @param socketAlternate.image.pullPolicy The image pull policy
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## @param socketAlternate.image.tag Overrides the image tag whose default is the chart appVersion
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##
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image:
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registry: cgr.dev
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repository: chainguard/bash
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pullPolicy: Always
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tag: latest@sha256:07d2662ef699e9ceafab3f39624083193dfcb7b768ee86860dbdd5cb4473dcea
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## @param socketAlternate.resources Specify resource needs as per https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/
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resources: {}
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## @param priorityClassName Priority class assigned to daemonset pods. Can be auto set with global.recommendations.priorityClassName.
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priorityClassName: ""
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