[英]Permission issue with Persistent volume in postgres in Kubernetes
I know this question has been asked repeatedly but not fully answered.我知道这个问题已经被反复问过但没有完全回答。 I have a postgres running in as root user in a container which is using the persistent volume.
我有一个以 root 用户身份在使用持久卷的容器中运行的 postgres。 But it seems like there is permission issue issue in mounting in the container.
但似乎在容器中安装时存在权限问题。 Container logs
容器日志
`The files belonging to this database system will be owned by user
"postgres".
This user must also own the server process.
The database cluster will be initialized with locale "en_US.utf8".
The default database encoding has accordingly been set to "UTF8".
The default text search configuration will be set to "english".
Data page checksums are disabled.
fixing permissions on existing directory /data ... ok
initdb: could not create directory "/data/pg_xlog": Permission denied
initdb: removing contents of data directory "/data"`
Persistent Volume and Persistent Volume Claim:持久卷和持久卷声明:
kind: PersistentVolume
apiVersion: v1
metadata:
name: store-persistent-volume
labels:
app: pgmaster
namespace: pustakalaya
spec:
storageClassName: manual
capacity:
storage: 5Gi
accessModes:
- ReadWriteMany
persistentVolumeReclaimPolicy: Retain
hostPath:
path: "/library/pgmaster-data"
---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: store-persistent-volume-claim
labels:
app: postgres
namespace: pustakalaya
spec:
storageClassName: manual
accessModes:
- ReadWriteMany
resources:
requests:
storage: 3Gi
and Pod file:和 Pod 文件:
spec:
selector:
matchLabels:
app: pgmaster
replicas: 1
template:
metadata:
labels:
app: pgmaster
spec:
# initContainers:
# - name: chmod-er
# image: busybox:latest
# command: ['sh', '-c' ,'/bin/chmod -R 777 /data && /bin/chown -R 999:999 /data']
containers:
- name: pgmaster
image: becram/olen-elib-db-master:v5.3.0
env:
- name: POSTGRES_DB
value: pustakalaya
- name: POSTGRES_USER
value: pustakalaya_user
- name: POSTGRES_PASSWORD
value: pustakalaya123
- name: PGDATA
value: /data
- name: POSTGRES_BACKUP_DIR
value: /backup
ports:
- containerPort: 5432
volumeMounts:
- mountPath: /data:rw
name: pgmaster-volume
# restartPolicy: Always
volumes:
- name: pgmaster-volume
persistentVolumeClaim:
claimName: store-persistent-volume-claim
I was having the same issue with Minikube.我在使用 Minikube 时遇到了同样的问题。 I solved it with a manual approach.
我用手动方法解决了它。 Since the folder is created on the host machine - which is running the node, I ssh-ed into the cluster.
由于该文件夹是在运行节点的主机上创建的,因此我通过 ssh 进入集群。 On Minikube you could do this by:
在 Minikube 上,您可以通过以下方式执行此操作:
minikube ssh
Next, find the folder on the cluster host machine and manually change the permissions.接下来找到集群主机上的文件夹,手动更改权限。
chmod -R 777 /myfolder
chown -R 999:999 /myfolder
After this, I executed the manifest files again, and it ran without a problem.在此之后,我再次执行清单文件,它运行没有问题。 So to fix this, you need to change permissions from your cluster machine and not from your container.
因此,要解决此问题,您需要从集群计算机而不是容器更改权限。
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