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Kubernetes logging architecture - NFS Persistent volume?


Kubernetes logging architecture - NFS Persistent volume?

By : Gerard Stannard
Date : October 18 2020, 06:10 PM
Hope this helps NFS is ok as long as it is able to offer required performance. You should apply lifecycle policy at Elasticsearch indices level. Modern Kibana has a nice interface for creation of lifecycle policies and overall monitoring of ES. Never worked with Filebeat. We use EFK stack - Elasticsearch, Fluentd and Kibana. It works pretty well and is installed only using Helm Charts.
code :


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Docker volume vs Kubernetes persistent volume for databases

Docker volume vs Kubernetes persistent volume for databases


By : M.rizki Fadli
Date : March 29 2020, 07:55 AM
it should still fix some issue using docker volumes on a cluster like Kubernetes gives you no data persistency. The workload can get scheduled on different node and you're done. To provide persistent storage in K8S cluster you need to use K8S solution to the problem.
Docker volume vs Kubernetes persistent volume

Docker volume vs Kubernetes persistent volume


By : progkhaled
Date : March 29 2020, 07:55 AM
wish of those help It will not be ignored unless you override it on your Kubernetes pod spec. For example, if you follow this example from the Docker documentation:
code :
$ docker run -it container bash
root@7efcf5ef12a2:/# mount | grep myvol
/dev/nvmeXnXpX on /myvol type ext4 (rw,relatime,discard,data=ordered)
root@7efcf5ef12a2:/#
$ pwd
/var/lib/docker/volumes
$ find . | grep greeting
./d0bc20d085243c39c4f386dce2f6cafcd8146128d6b0c8f9dcb27cfb61a7ecab/_data/greeting
$ docker run -it -v /mnt:/myvol container bash
root@1c7211cf43d0:/# cd /myvol/
root@1c7211cf43d0:/myvol# touch hello
root@1c7211cf43d0:/myvol# exit
exit
$ pwd # <= on the host
/mnt
$ ls
hello
apiVersion: v1
kind: Pod
metadata:
  name: mypod
spec:
  containers:
  - name: mycontainer
    image: container
    volumeMounts:
    - name: storage
      mountPath: /myvol
  volumes:
    - name: storage
      hostPath:
        path: /mnt
        type: Directory
Kubernetes Persistent Volume Claims creates a new Persistent Volume instead of binding to the available Persistent Volum

Kubernetes Persistent Volume Claims creates a new Persistent Volume instead of binding to the available Persistent Volum


By : user3690990
Date : March 29 2020, 07:55 AM
it should still fix some issue The Docker for Mac default storage class is the dynamic provisioning type, like you would get on AKS/GKE, where it allocates the physical storage as well.
code :
→ kubectl get StorageClass
NAME                 PROVISIONER          AGE
hostpath (default)   docker.io/hostpath   191d
apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv-nfs-data
spec:
  accessModes:
    - ReadWriteMany
  capacity:
    storage: 10Gi
  claimRef:
    namespace: insert-your-namespace-here
    name: pv-nfs-data-claim
  persistentVolumeReclaimPolicy: Retain
  nfs:
    server: 192.168.1.250
    path: "/volume1/docker"
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: pv-nfs-data-claim
  namespace: insert-your-namespace-here
spec:
  storageClassName: ''
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
GCE Kubernetes: Persistent disk and Persistent Volume claim

GCE Kubernetes: Persistent disk and Persistent Volume claim


By : Abdul Rahman
Date : March 29 2020, 07:55 AM
wish help you to fix your issue In order of best to worst approach:
Best: Approach 2 - Dynamic Volume Provisioning Ok: Approach 1 - Pre-provisioned volumes via PersistentVolumeClaim Worst: Approach 3 - Direct reference of disk via pod without PersistentVolumeClaim
Creating a volume in a dockerfile without a persistent volume (claim) in Kubernetes?

Creating a volume in a dockerfile without a persistent volume (claim) in Kubernetes?


By : paul
Date : October 08 2020, 05:00 PM
may help you . It usually doesn’t make sense to define a VOLUME in your Dockerfile.
You can use the docker run -v option or Kubernetes’s container volume mount setting on any directory in the container filesystem space, regardless of whether or not its image originally declared it as a VOLUME. Conversely, a VOLUME can leak anonymous volumes in an iterative development sequence, and breaks RUN commands later in the Dockerfile.
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