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feat: add hostAliases support to Coder helm chart (#24729)

Browse Source 
adds support for specifying hostAliases entries in the Coder control
plane pod.

```
➜  coder git:(rowan/helm-hostaliases) helm template coder . --set coder.image.tag=v2.32.0 --set coder.hostAliases[0].hostnames[0]=coder.nicecorp.org --set coder.hostAliases[0].ip=1.1.1.1 
....
---
# Source: coder/templates/coder.yaml
apiVersion: apps/v1
kind: Deployment
....
      hostAliases:
      - hostnames:
        - coder.nicecorp.org
        ip: 1.1.1.1
      restartPolicy: Always
      serviceAccountName: coder
      terminationGracePeriodSeconds: 60
      volumes: []
```
This commit is contained in:
Rowan Smith
2026-04-29 12:45:54 +10:00
committed by GitHub
parent 9538390107
commit 76242f8202
6 changed files with 442 additions and 0 deletions
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helm/coder/tests/chart_test.go
+4
View File
@@ -153,6 +153,10 @@ var testCases = []testCase{
name: "prometheus_address_override",
expectedError: "",
},
{
name: "host_aliases",
expectedError: "",
},
}
type testCase struct {
helm/coder/tests/testdata/host_aliases.golden
Vendored
+208
View File
@@ -0,0 +1,208 @@
---
# Source: coder/templates/coder.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
annotations: {}
labels:
app.kubernetes.io/instance: release-name
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: coder
app.kubernetes.io/part-of: coder
app.kubernetes.io/version: 0.1.0
helm.sh/chart: coder-0.1.0
name: coder
namespace: default
---
# Source: coder/templates/rbac.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
name: coder-workspace-perms
namespace: default
rules:
- apiGroups: [""]
resources: ["pods"]
verbs:
- create
- delete
- deletecollection
- get
- list
- patch
- update
- watch
- apiGroups: [""]
resources: ["persistentvolumeclaims"]
verbs:
- create
- delete
- deletecollection
- get
- list
- patch
- update
- watch
- apiGroups:
- apps
resources:
- deployments
verbs:
- create
- delete
- deletecollection
- get
- list
- patch
- update
- watch
---
# Source: coder/templates/rbac.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
name: "coder"
namespace: default
subjects:
- kind: ServiceAccount
name: "coder"
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: coder-workspace-perms
---
# Source: coder/templates/service.yaml
apiVersion: v1
kind: Service
metadata:
name: coder
namespace: default
labels:
helm.sh/chart: coder-0.1.0
app.kubernetes.io/name: coder
app.kubernetes.io/instance: release-name
app.kubernetes.io/part-of: coder
app.kubernetes.io/version: "0.1.0"
app.kubernetes.io/managed-by: Helm
annotations:
{}
spec:
type: LoadBalancer
sessionAffinity: None
ports:
- name: "http"
port: 80
targetPort: "http"
protocol: TCP
nodePort:
externalTrafficPolicy: "Cluster"
selector:
app.kubernetes.io/name: coder
app.kubernetes.io/instance: release-name
---
# Source: coder/templates/coder.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
annotations: {}
labels:
app.kubernetes.io/instance: release-name
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: coder
app.kubernetes.io/part-of: coder
app.kubernetes.io/version: 0.1.0
helm.sh/chart: coder-0.1.0
name: coder
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/instance: release-name
app.kubernetes.io/name: coder
template:
metadata:
annotations:
app.kubernetes.io/component: coderd
labels:
app.kubernetes.io/instance: release-name
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: coder
app.kubernetes.io/part-of: coder
app.kubernetes.io/version: 0.1.0
helm.sh/chart: coder-0.1.0
spec:
affinity:
podAntiAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
- podAffinityTerm:
labelSelector:
matchExpressions:
- key: app.kubernetes.io/instance
operator: In
values:
- coder
topologyKey: kubernetes.io/hostname
weight: 1
containers:
- args:
- server
command:
- /opt/coder
env:
- name: CODER_HTTP_ADDRESS
value: 0.0.0.0:8080
- name: CODER_PROMETHEUS_ADDRESS
value: 0.0.0.0:2112
- name: CODER_PPROF_ADDRESS
value: 0.0.0.0:6060
- name: CODER_ACCESS_URL
value: http://coder.default.svc.cluster.local
- name: KUBE_POD_IP
valueFrom:
fieldRef:
fieldPath: status.podIP
- name: CODER_DERP_SERVER_RELAY_URL
value: http://$(KUBE_POD_IP):8080
image: ghcr.io/coder/coder:latest
imagePullPolicy: IfNotPresent
lifecycle: {}
name: coder
ports:
- containerPort: 8080
name: http
protocol: TCP
readinessProbe:
httpGet:
path: /healthz
port: http
scheme: HTTP
initialDelaySeconds: 0
resources:
limits:
cpu: 2000m
memory: 4096Mi
requests:
cpu: 2000m
memory: 4096Mi
securityContext:
allowPrivilegeEscalation: false
readOnlyRootFilesystem: null
runAsGroup: 1000
runAsNonRoot: true
runAsUser: 1000
seccompProfile:
type: RuntimeDefault
volumeMounts: []
hostAliases:
- hostnames:
- coder.nicecorp.org
- coder.internal
ip: 1.1.1.1
- hostnames:
- db.internal
ip: 10.0.0.5
restartPolicy: Always
serviceAccountName: coder
terminationGracePeriodSeconds: 60
volumes: []
helm/coder/tests/testdata/host_aliases.yaml
Vendored
+11
View File
@@ -0,0 +1,11 @@
coder:
image:
tag: latest
hostAliases:
- hostnames:
- "coder.nicecorp.org"
- "coder.internal"
ip: "1.1.1.1"
- hostnames:
- "db.internal"
ip: "10.0.0.5"
helm/coder/tests/testdata/host_aliases_coder.golden
Vendored
+208
View File
@@ -0,0 +1,208 @@
---
# Source: coder/templates/coder.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
annotations: {}
labels:
app.kubernetes.io/instance: release-name
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: coder
app.kubernetes.io/part-of: coder
app.kubernetes.io/version: 0.1.0
helm.sh/chart: coder-0.1.0
name: coder
namespace: coder
---
# Source: coder/templates/rbac.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
name: coder-workspace-perms
namespace: coder
rules:
- apiGroups: [""]
resources: ["pods"]
verbs:
- create
- delete
- deletecollection
- get
- list
- patch
- update
- watch
- apiGroups: [""]
resources: ["persistentvolumeclaims"]
verbs:
- create
- delete
- deletecollection
- get
- list
- patch
- update
- watch
- apiGroups:
- apps
resources:
- deployments
verbs:
- create
- delete
- deletecollection
- get
- list
- patch
- update
- watch
---
# Source: coder/templates/rbac.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
name: "coder"
namespace: coder
subjects:
- kind: ServiceAccount
name: "coder"
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: coder-workspace-perms
---
# Source: coder/templates/service.yaml
apiVersion: v1
kind: Service
metadata:
name: coder
namespace: coder
labels:
helm.sh/chart: coder-0.1.0
app.kubernetes.io/name: coder
app.kubernetes.io/instance: release-name
app.kubernetes.io/part-of: coder
app.kubernetes.io/version: "0.1.0"
app.kubernetes.io/managed-by: Helm
annotations:
{}
spec:
type: LoadBalancer
sessionAffinity: None
ports:
- name: "http"
port: 80
targetPort: "http"
protocol: TCP
nodePort:
externalTrafficPolicy: "Cluster"
selector:
app.kubernetes.io/name: coder
app.kubernetes.io/instance: release-name
---
# Source: coder/templates/coder.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
annotations: {}
labels:
app.kubernetes.io/instance: release-name
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: coder
app.kubernetes.io/part-of: coder
app.kubernetes.io/version: 0.1.0
helm.sh/chart: coder-0.1.0
name: coder
namespace: coder
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/instance: release-name
app.kubernetes.io/name: coder
template:
metadata:
annotations:
app.kubernetes.io/component: coderd
labels:
app.kubernetes.io/instance: release-name
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/name: coder
app.kubernetes.io/part-of: coder
app.kubernetes.io/version: 0.1.0
helm.sh/chart: coder-0.1.0
spec:
affinity:
podAntiAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
- podAffinityTerm:
labelSelector:
matchExpressions:
- key: app.kubernetes.io/instance
operator: In
values:
- coder
topologyKey: kubernetes.io/hostname
weight: 1
containers:
- args:
- server
command:
- /opt/coder
env:
- name: CODER_HTTP_ADDRESS
value: 0.0.0.0:8080
- name: CODER_PROMETHEUS_ADDRESS
value: 0.0.0.0:2112
- name: CODER_PPROF_ADDRESS
value: 0.0.0.0:6060
- name: CODER_ACCESS_URL
value: http://coder.coder.svc.cluster.local
- name: KUBE_POD_IP
valueFrom:
fieldRef:
fieldPath: status.podIP
- name: CODER_DERP_SERVER_RELAY_URL
value: http://$(KUBE_POD_IP):8080
image: ghcr.io/coder/coder:latest
imagePullPolicy: IfNotPresent
lifecycle: {}
name: coder
ports:
- containerPort: 8080
name: http
protocol: TCP
readinessProbe:
httpGet:
path: /healthz
port: http
scheme: HTTP
initialDelaySeconds: 0
resources:
limits:
cpu: 2000m
memory: 4096Mi
requests:
cpu: 2000m
memory: 4096Mi
securityContext:
allowPrivilegeEscalation: false
readOnlyRootFilesystem: null
runAsGroup: 1000
runAsNonRoot: true
runAsUser: 1000
seccompProfile:
type: RuntimeDefault
volumeMounts: []
hostAliases:
- hostnames:
- coder.nicecorp.org
- coder.internal
ip: 1.1.1.1
- hostnames:
- db.internal
ip: 10.0.0.5
restartPolicy: Always
serviceAccountName: coder
terminationGracePeriodSeconds: 60
volumes: []
helm/coder/values.yaml
+7
View File
@@ -356,6 +356,13 @@ coder:
# value: "value"
# effect: "NoSchedule"
# coder.hostAliases -- extra entries for pod's /etc/hosts.
# See: https://kubernetes.io/docs/tasks/network/customize-hosts-file-for-pods/
hostAliases: []
# - hostnames:
# - "some.host.name.com"
# ip: 0.0.0.0
# coder.nodeSelector -- Node labels for constraining coder pods to nodes.
# See: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#nodeselector
nodeSelector: {}
helm/libcoder/templates/_coder.yaml
+4
View File
@@ -59,6 +59,10 @@ spec:
topologySpreadConstraints:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.coder.hostAliases }}
hostAliases:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.coder.initContainers }}
initContainers:
{{ toYaml . | nindent 8 }}