k8s权限被拒绝问题

Question

我在部署k8s部署时遇到了这个错误，我试图通过安全上下文模拟root用户，但没有帮助，你猜怎么解决？不幸的是，我没有任何其他想法或解决方法来避免这个权限问题。

我得到的错误是：

30: line 1: /scripts/wrapper.sh: Permission denied
stream closed

部署如下：

apiVersion: apps/v1
kind: Deployment
metadata:
name: cluster-autoscaler-grok-exporter
labels:
app: cluster-autoscaler-grok-exporter
spec:
replicas: 1
selector:
matchLabels:
app: cluster-autoscaler-grok-exporter
sidecar: cluster-autoscaler-grok-exporter-sidecar
template:
metadata:
labels:
app: cluster-autoscaler-grok-exporter
sidecar: cluster-autoscaler-grok-exporter-sidecar
spec:
securityContext:
runAsUser: 1001
fsGroup: 2000 
serviceAccountName: flux
imagePullSecrets:
- name: id-docker
containers:
- name: get-data
# 3.5.0 - helm v3.5.0, kubectl v1.20.2, alpine 3.12
image: dtzar/helm-kubectl:3.5.0
command: ["sh", "-c", "/scripts/wrapper.sh"]
args:
- cluster-autoscaler
- "90"
# - cluster-autoscaler
- "30"
- /scripts/get_data.sh
- /logs/data.log
volumeMounts:
- name: logs
mountPath: /logs/
- name: scripts-volume-get-data
mountPath: /scripts/get_data.sh
subPath: get_data.sh
- name: scripts-wrapper
mountPath: /scripts/wrapper.sh
subPath: wrapper.sh
- name: export-data
image: ippendigital/grok-exporter:1.0.0.RC3
imagePullPolicy: Always
ports:
- containerPort: 9148
protocol: TCP
volumeMounts:
- name: grok-config-volume
mountPath: /grok/config.yml
subPath: config.yml
- name: logs
mountPath: /logs
volumes:
- name: grok-config-volume
configMap:
name: grok-exporter-config
- name: scripts-volume-get-data
configMap:
name: get-data-script
defaultMode: 0777
defaultMode: 0700
- name: scripts-wrapper
configMap:
name: wrapper-config
defaultMode: 0777
defaultMode: 0700
- name: logs
emptyDir: {}

---
apiVersion: v1
kind: Service
metadata:
name: cluster-autoscaler-grok-exporter-sidecar
labels:
sidecar: cluster-autoscaler-grok-exporter-sidecar
spec:
type: ClusterIP
ports:
- name: metrics
protocol: TCP
targetPort: 9144
port: 9148
selector:
sidecar: cluster-autoscaler-grok-exporter-sidecar
---
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
labels:
app.kubernetes.io/name: cluster-autoscaler-grok-exporter
app.kubernetes.io/part-of: grok-exporter
name: cluster-autoscaler-grok-exporter
spec:
endpoints:
- port: metrics
selector:
matchLabels:
sidecar: cluster-autoscaler-grok-exporter-sidecar

Answer 1

据我所见，您的脚本没有执行权限。

从配置映射中删除此行。

defaultMode: 0700

仅保留：

defaultMode: 0777

此外，我在您的脚本路径中看到缺少前导/

- /bin/sh scripts/get_data.sh

所以，把它改成

- /bin/sh /scripts/get_data.sh