Local Path

• rancher/local-path-provisioner
• storageClassName: local-path
• 自动创建目录 - /var/lib/rancher/k3s/storage
  • pvc-<UUID>_<NAMESPACE>_<PVC_NAME>
  • UUID=pvc.uid
  • PVC_NAME=<VOLUME_NAME>_<POD_NAME>
• helper-pod-create-pvc
  • rancher/mirrored-library-busybox:1.34.1
• 注意
  • 异常后 PVC 丢失，StatefulSet 无法启动
    • 删除 Pod 从新部署可恢复
• 参考
  • zfs example #162
  • 恢复 pv #144

k3s 默认配置

{
  "nodePathMap": [
    {
      "node": "DEFAULT_PATH_FOR_NON_LISTED_NODES",
      "paths": ["/var/lib/rancher/k3s/storage"]
    }
  ]
}

配置

kind: ConfigMap
apiVersion: v1
metadata:
  name: local-path-config
  namespace: local-path-storage
data:
  # paths 设置为空数组则会拒绝
  # paths 设置多个会随机选择
  config.json: |-
    {
      "nodePathMap":[
        {
          "node":"DEFAULT_PATH_FOR_NON_LISTED_NODES",
          "paths":["/opt/local-path-provisioner"]
        },
        {
          "node":"yasker-lp-dev1",
          "paths":["/opt/local-path-provisioner", "/data1"]
        },
        {
          "node":"yasker-lp-dev3",
          "paths":[]
        }
      ]
    }
  setup: |-
    #!/bin/sh
    path=$1
    mkdir -m 0777 -p ${path}
  teardown: |-
    #!/bin/sh
    path=$1
    rm -rf ${path}