mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-15 16:30:55 +01:00
137 lines
4.6 KiB
Markdown
137 lines
4.6 KiB
Markdown
---
|
|
sort: 3
|
|
weight: 3
|
|
title: Security
|
|
menu:
|
|
docs:
|
|
parent: "operator"
|
|
weight: 3
|
|
---
|
|
|
|
# Security
|
|
|
|
## Access control
|
|
|
|
### Roles
|
|
|
|
To run in a cluster the operator needs certain permissions, you can see them in [this directory](https://github.com/VictoriaMetrics/operator/tree/master/config/rbac):
|
|
|
|
- [`role.yaml` file](https://github.com/VictoriaMetrics/operator/blob/master/config/rbac/role.yaml) - basic set of cluster roles for launching an operator.
|
|
- [`leader_election_role.yaml` file](https://github.com/VictoriaMetrics/operator/blob/master/config/rbac/leader_election_role.yaml) - set of roles with permissions to do leader election (is necessary to run the operator in several replicas for high availability).
|
|
|
|
Also, you can use single-namespace mode with minimal permissions, see [this section](./configuration.md#namespaced-mode) for details.
|
|
|
|
Also in [the same directory](https://github.com/VictoriaMetrics/operator/tree/master/config/rbac) are files with a set of separate permissions to view or edit [operator resources](./resources/README.md) to organize fine-grained access:
|
|
|
|
- file `<RESOURCE_NAME>_viewer_role.yaml` - permissions for viewing (`get`, `list` and `watch`) some resource of vmoperator.
|
|
- file `<RESOURCE_NAME>_editor_role.yaml` - permissions for editing (`create`, `delete`, `patch`, `update` and `deletecollection`) some resource of vmoperator (also includes viewing permissions).
|
|
|
|
For instance, [`vmalert_editor_role.yaml` file](https://github.com/VictoriaMetrics/operator/blob/master/config/rbac/vmalert_editor_role.yaml) contain permission
|
|
for editing [`vmagent` custom resources](./resources/vmagent.md).
|
|
|
|
<!-- TODO: service accounts / role bindings? -->
|
|
<!-- TODO: resource/roles relations -->
|
|
|
|
## Security policies
|
|
|
|
VictoriaMetrics operator provides several security features, such as [PodSecurityPolicies](https://kubernetes.io/docs/concepts/policy/pod-security-policy/),
|
|
[PodSecurityContext](https://kubernetes.io/docs/tasks/configure-pod-container/security-context/).
|
|
|
|
### PodSecurityPolicy
|
|
|
|
> PodSecurityPolicy was [deprecated](https://kubernetes.io/docs/concepts/security/pod-security-policy/) in Kubernetes v1.21, and removed from Kubernetes in v1.25.
|
|
|
|
If your Kubernetes version is under v1.25 and want to use PodSecurityPolicy, you can set env `VM_PSPAUTOCREATEENABLED: "true"` in operator, it will create serviceAccount for each cluster resource and binds default `PodSecurityPolicy` to it.
|
|
|
|
Default psp:
|
|
```yaml
|
|
apiVersion: policy/v1beta1
|
|
kind: PodSecurityPolicy
|
|
metadata:
|
|
name: vmagent-example-vmagent
|
|
spec:
|
|
allowPrivilegeEscalation: false
|
|
fsGroup:
|
|
rule: RunAsAny
|
|
hostNetwork: true
|
|
requiredDropCapabilities:
|
|
- ALL
|
|
runAsUser:
|
|
rule: RunAsAny
|
|
seLinux:
|
|
rule: RunAsAny
|
|
supplementalGroups:
|
|
rule: RunAsAny
|
|
volumes:
|
|
- persistentVolumeClaim
|
|
- secret
|
|
- emptyDir
|
|
- configMap
|
|
- projected
|
|
- downwardAPI
|
|
- nfs
|
|
```
|
|
|
|
User may also override default pod security policy with setting: `spec.podSecurityPolicyName: "psp-name"`.
|
|
|
|
## PodSecurityContext
|
|
|
|
VictoriaMetrics operator will add default Security Context to managed pods and containers if env `EnableStrictSecurity: "true"` is set.
|
|
The following SecurityContext will be applied:
|
|
|
|
### Pod SecurityContext
|
|
|
|
1. **RunAsNonRoot: true**
|
|
1. **RunAsUser/RunAsGroup/FSGroup: 65534**
|
|
|
|
'65534' refers to 'nobody' in all the used default images like alpine, busybox.
|
|
|
|
If you're using customize image, please make sure '65534' is a valid uid in there or specify SecurityContext.
|
|
1. **FSGroupChangePolicy: &onRootMismatch**
|
|
|
|
If KubeVersion>=1.20, use `FSGroupChangePolicy="onRootMismatch"` to skip the recursive permission change
|
|
when the root of the volume already has the correct permissions
|
|
1. **SeccompProfile: {type: RuntimeDefault}**
|
|
|
|
Use `RuntimeDefault` seccomp profile by default, which is defined by the container runtime,
|
|
instead of using the Unconfined (seccomp disabled) mode.
|
|
|
|
### Container SecurityContext
|
|
|
|
1. **AllowPrivilegeEscalation: false**
|
|
1. **ReadOnlyRootFilesystem: true**
|
|
1. **Capabilities: {drop: [all]}**
|
|
|
|
|
|
Also `SecurityContext` can be configured with spec setting. It may be useful for mounted volumes, with `VMSingle` for example:
|
|
|
|
```yaml
|
|
apiVersion: operator.victoriametrics.com/v1beta1
|
|
kind: VMSingle
|
|
metadata:
|
|
name: vmsingle-f
|
|
namespace: monitoring-system
|
|
spec:
|
|
retentionPeriod: "2"
|
|
removePvcAfterDelete: true
|
|
securityContext:
|
|
runAsUser: 1000
|
|
fsGroup: 1000
|
|
runAsGroup: 1000
|
|
extraArgs:
|
|
dedup.minScrapeInterval: 10s
|
|
storage:
|
|
accessModes:
|
|
- ReadWriteOnce
|
|
resources:
|
|
requests:
|
|
storage: 25Gi
|
|
resources:
|
|
requests:
|
|
cpu: "0.5"
|
|
memory: "512Mi"
|
|
limits:
|
|
cpu: "1"
|
|
memory: "1512Mi"
|
|
```
|