• k8s
• StudyNotes
• Storage

k8s/StudyNotes/Storage

• Docker storage - Storage drivers[aufs,btrfs,etc.] and volume's [Local,VMware,rexray/ebs]
  • /var/lib/docker/ [aufs, containers, image, volumes]

  • Create persistent storage for docker container

         docker volume create data_vol
         docker run -v data_vol:/var/lib/mysql mysql
         # if no pre-created volume docker creates it on the fly
         
         docker run --mount type=bind,source=/data/mysql,target=/varlib/mysql mysql 
      

  • Bind mount form anywhere, volume mount from /var/lib/docker/volumes/

• k8s - Was just docker, now CRI container runtime interface to support docker,rkt, cri-o

  • Same for network CNI Container network interface

  • Same for storage CSI Container Storage Interface - Amazon EBS, PureStorage

    • CSI spec https://github.com/container-storage-interface

• k8s volume options [hostPath:, nfs, awsElasticBlockStore:, etc]

• k8s centralize storage with PersistentVolume, then pods carve pieces with VolumeClaims.