This is a feature to create Role & RoleBinding entries on a per
namespace basis to support deploying workspaces in separate namespace to
where Coder is deployed. The idea behind this is to avoid the creation
of custom RBAC entries or the use of ClusterRoles (in order to maintain
priciple of least privilege).
> If you have used AI to produce some or all of this PR, please ensure
you have read our [AI Contribution
guidelines](https://coder.com/docs/about/contributing/AI_CONTRIBUTING)
before submitting.
This is a blink assisted PR.
Example `helm template` without
`coder.serviceAccount.workspaceNamespaces` enabled (existing behaviour
as of current release) is below. Outcome = 1 x SA, 1 x Role, 1 x
RoleBinding, all in the coder (`.Release.Namespace`) namespace.
```
➜ coder git:(feat/helm_namespace_rbac_improvements) ✗ helm template -n coder coder . --set coder.image.tag=v2.25.1
---
...
---
# 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
---
```
Example `helm template` *with*
`coder.serviceAccount.workspaceNamespaces` enabled is below. Outcome = 1
x SA, 1 x Role, 1 x RoleBinding, all in the coder (`.Release.Namespace`)
namespace PLUS a Role and RoleBinding in the `dev-ws` namespace with
each of the RoleBindings referencing the coder SA in the coder
(`.Release.Namespace`) namespace:
```
➜ coder git:(feat/helm_namespace_rbac_improvements) ✗ helm template -n coder coder . --set coder.image.tag=v2.25.1 --set-json 'coder.serviceAccount.workspaceNamespaces=[{"name":"dev-ws","workspacePerms":true,"enableDeployments":true,"extraRules":[]}]'
---
...
---
# 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: Role
metadata:
name: coder-workspace-perms
namespace: dev-ws
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/rbac.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
name: "coder"
namespace: dev-ws
subjects:
- kind: ServiceAccount
name: "coder"
namespace: coder
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: coder-workspace-perms
---
```
**Add pod-level securityContext support to Coder Helm chart**
Adds `coder.podSecurityContext` field to enable pod-level security
settings, primarily to solve TLS certificate mounting permission issues.
**Problem**: When mounting TLS certificates from Kubernetes secrets, the
Coder process (UID 1000) cannot read the files due to restrictive
permissions.
**Solution**: Setting `podSecurityContext.fsGroup: 1000` ensures
Kubernetes sets group ownership of mounted volumes to GID 1000, allowing
the Coder process to read certificate files.
**Changes**:
- Added `podSecurityContext` field to values.yaml with documentation
- Updated `_coder.yaml` template to include pod-level security context
- Added test case and golden files
- Maintains backward compatibility (opt-in feature)
**Usage**:
```yaml
coder:
podSecurityContext:
fsGroup: 1000 # Enables TLS cert access
```
Fixes#19038
Added namespace to all resources in the helm chart and added tests to ensure that coder can be deployed in non-default namespaces, as specified via the namespace flag in the helm command.
Ways to verify this:
- current state:
```bash
$ helm template my-coder coder -n coder --version 2.19.0 --repo https://helm.coder.com/v2 | yq '.metadata.namespace'
null
---
null
---
null
---
null
---
null
```
- fixed state when checking out this PR:
```bash
$ helm template my-coder ./helm/coder -n coder --set coder.image.tag=latest | yq '.metadata.namespace'
coder
---
coder
---
coder
---
coder
---
coder
```
Change-Id: Ib66d4be9bcc4984dfe15709362e1fe0dcd3e847f
Signed-off-by: Thomas Kosiewski <tk@coder.com>
Rowan Smith