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我floragunncom/sg-elasticsearch:7.0.1-oss-35.0.0在 kubernetes 集群（v1.18 - kind）上运行 Elasicsearch（）。

我已经为每个 Elasticsearch 数据节点（即 pod）分配200Mi了 PVC 作为存储。但是当 elasticseach cluster(3 master, 3 data, 2 ingest) 启动时，它会显示以下警告消息：

{“类型”：“服务器”，“时间戳”：“2020-07-20T06：27：14,354+0000”，“级别”：“警告”，“组件”：“oecraDiskThresholdMonitor”，“cluster.name”：“拓扑-es”，“node.name”：“master-topology-es-1”，“cluster.uuid”：“U0Yf6tiJSHC57R_QHa2qiw”，“node.id”：“tDet2llLQaydoxfYT4TcpQ”，“消息”：“高磁盘水印[ [C-TUE5_cR1ihqrhThpWnsg][data-topology-es-1][/usr/share/elasticsearch/data/nodes/0] 超过 90%] 免费：5.5gb[7%]，分片将从该节点移走" }

  • 这是5.5gb[7%]从哪里来的？

我还检查了分片的状态：

$ curl -XGET "https://localhost:9200/_cat/shards?h=index,shard,prirep,state,unassigned.reason" -u "admin:XXXXX" --insecure
searchguard 0 p STARTED    
searchguard 0 r UNASSIGNED REPLICA_ADDED
searchguard 0 r UNASSIGNED REPLICA_ADDED
  • 如果200Mi还不够，那为什么主shard分配成功了，data-node-0但是replica没有data-node-1分别data-node-2呢？

更新：

$ curl -XGET "https://localhost:9200/_nodes/stats/fs?pretty" -u "admin:XXXX" --insecure
{
  "_nodes" : {
    "total" : 8,
    "successful" : 8,
    "failed" : 0
  },
  "cluster_name" : "topology-es",
  "nodes" : {
    "jYkduRCmQ2GEHMn2DeBrxg" : {
      "timestamp" : 1595231421976,
      "name" : "data-topology-es-0",
      "transport_address" : "10.244.0.59:9300",
      "host" : "10.244.0.59",
      "ip" : "10.244.0.59:9300",
      "roles" : [
        "data"
      ],
      "fs" : {
        "timestamp" : 1595231421989,
        "total" : {
          "total_in_bytes" : 84054204416,
          "free_in_bytes" : 10231291904,
          "available_in_bytes" : 5917450240
        },
        "data" : [
          {
            "path" : "/usr/share/elasticsearch/data/nodes/0",
            "mount" : "/usr/share/elasticsearch/data (/dev/sda3)",
            "type" : "ext4",
            "total_in_bytes" : 84054204416,
            "free_in_bytes" : 10231291904,
            "available_in_bytes" : 5917450240
          }
        ],
        "io_stats" : {
          "devices" : [
            {
              "device_name" : "sda3",
              "operations" : 77306,
              "read_operations" : 7745,
              "write_operations" : 69561,
              "read_kilobytes" : 230532,
              "write_kilobytes" : 500284
            }
          ],
          "total" : {
            "operations" : 77306,
            "read_operations" : 7745,
            "write_operations" : 69561,
            "read_kilobytes" : 230532,
            "write_kilobytes" : 500284
          }
        }
      }
    },
    "N7ql_AneQoa6w8yvgBhYZg" : {
      "timestamp" : 1595231421977,
      "name" : "client-topology-es-0",
      "transport_address" : "10.244.0.49:9300",
      "host" : "10.244.0.49",
      "ip" : "10.244.0.49:9300",
      "roles" : [
        "ingest"
      ],
      "fs" : {
        "timestamp" : 1595231421981,
        "total" : {
          "total_in_bytes" : 84054204416,
          "free_in_bytes" : 10231291904,
          "available_in_bytes" : 5917450240
        },
        "data" : [
          {
            "path" : "/usr/share/elasticsearch/data/nodes/0",
            "mount" : "/usr/share/elasticsearch/data (/dev/sda3)",
            "type" : "ext4",
            "total_in_bytes" : 84054204416,
            "free_in_bytes" : 10231291904,
            "available_in_bytes" : 5917450240
          }
        ],
        "io_stats" : {
          "devices" : [
            {
              "device_name" : "sda3",
              "operations" : 84052,
              "read_operations" : 7853,
              "write_operations" : 76199,
              "read_kilobytes" : 231804,
              "write_kilobytes" : 565340
            }
          ],
          "total" : {
            "operations" : 84052,
            "read_operations" : 7853,
            "write_operations" : 76199,
            "read_kilobytes" : 231804,
            "write_kilobytes" : 565340
          }
        }
      }
    },
    "gse01W_XR7qKvZPHPq7n7g" : {
      "timestamp" : 1595231421984,
      "name" : "master-topology-es-2",
      "transport_address" : "10.244.0.57:9300",
      "host" : "10.244.0.57",
      "ip" : "10.244.0.57:9300",
      "roles" : [
        "master"
      ],
      "fs" : {
        "timestamp" : 1595231421993,
        "total" : {
          "total_in_bytes" : 84054204416,
          "free_in_bytes" : 10231291904,
          "available_in_bytes" : 5917450240
        },
        "data" : [
          {
            "path" : "/usr/share/elasticsearch/data/nodes/0",
            "mount" : "/usr/share/elasticsearch/data (/dev/sda3)",
            "type" : "ext4",
            "total_in_bytes" : 84054204416,
            "free_in_bytes" : 10231291904,
            "available_in_bytes" : 5917450240
          }
        ],
        "io_stats" : {
          "devices" : [
            {
              "device_name" : "sda3",
              "operations" : 77627,
              "read_operations" : 7747,
              "write_operations" : 69880,
              "read_kilobytes" : 230560,
              "write_kilobytes" : 504608
            }
          ],
          "total" : {
            "operations" : 77627,
            "read_operations" : 7747,
            "write_operations" : 69880,
            "read_kilobytes" : 230560,
            "write_kilobytes" : 504608
          }
        }
      }
    },
    "bBNEuz2pSkWeOUmDIowEDQ" : {
      "timestamp" : 1595231421991,
      "name" : "client-topology-es-1",
      "transport_address" : "10.244.0.51:9300",
      "host" : "10.244.0.51",
      "ip" : "10.244.0.51:9300",
      "roles" : [
        "ingest"
      ],
      "fs" : {
        "timestamp" : 1595231421995,
        "total" : {
          "total_in_bytes" : 84054204416,
          "free_in_bytes" : 10231291904,
          "available_in_bytes" : 5917450240
        },
        "data" : [
          {
            "path" : "/usr/share/elasticsearch/data/nodes/0",
            "mount" : "/usr/share/elasticsearch/data (/dev/sda3)",
            "type" : "ext4",
            "total_in_bytes" : 84054204416,
            "free_in_bytes" : 10231291904,
            "available_in_bytes" : 5917450240
          }
        ],
        "io_stats" : {
          "devices" : [
            {
              "device_name" : "sda3",
              "operations" : 82173,
              "read_operations" : 7788,
              "write_operations" : 74385,
              "read_kilobytes" : 231144,
              "write_kilobytes" : 546544
            }
          ],
          "total" : {
            "operations" : 82173,
            "read_operations" : 7788,
            "write_operations" : 74385,
            "read_kilobytes" : 231144,
            "write_kilobytes" : 546544
          }
        }
      }
    },
    "-hwsv3rqQeSVdfOsKqzrwA" : {
      "timestamp" : 1595231422013,
      "name" : "master-topology-es-0",
      "transport_address" : "10.244.0.53:9300",
      "host" : "10.244.0.53",
      "ip" : "10.244.0.53:9300",
      "roles" : [
        "master"
      ],
      "fs" : {
        "timestamp" : 1595231422080,
        "total" : {
          "total_in_bytes" : 84054204416,
          "free_in_bytes" : 10231291904,
          "available_in_bytes" : 5917450240
        },
        "data" : [
          {
            "path" : "/usr/share/elasticsearch/data/nodes/0",
            "mount" : "/usr/share/elasticsearch/data (/dev/sda3)",
            "type" : "ext4",
            "total_in_bytes" : 84054204416,
            "free_in_bytes" : 10231291904,
            "available_in_bytes" : 5917450240
          }
        ],
        "io_stats" : {
          "devices" : [
            {
              "device_name" : "sda3",
              "operations" : 79542,
              "read_operations" : 7762,
              "write_operations" : 71780,
              "read_kilobytes" : 230792,
              "write_kilobytes" : 521656
            }
          ],
          "total" : {
            "operations" : 79542,
            "read_operations" : 7762,
            "write_operations" : 71780,
            "read_kilobytes" : 230792,
            "write_kilobytes" : 521656
          }
        }
      }
    },
    "C-TUE5_cR1ihqrhThpWnsg" : {
      "timestamp" : 1595231421984,
      "name" : "data-topology-es-1",
      "transport_address" : "10.244.0.61:9300",
      "host" : "10.244.0.61",
      "ip" : "10.244.0.61:9300",
      "roles" : [
        "data"
      ],
      "fs" : {
        "timestamp" : 1595231422003,
        "total" : {
          "total_in_bytes" : 84054204416,
          "free_in_bytes" : 10231291904,
          "available_in_bytes" : 5917450240
        },
        "data" : [
          {
            "path" : "/usr/share/elasticsearch/data/nodes/0",
            "mount" : "/usr/share/elasticsearch/data (/dev/sda3)",
            "type" : "ext4",
            "total_in_bytes" : 84054204416,
            "free_in_bytes" : 10231291904,
            "available_in_bytes" : 5917450240
          }
        ],
        "io_stats" : {
          "devices" : [
            {
              "device_name" : "sda3",
              "operations" : 77169,
              "read_operations" : 7736,
              "write_operations" : 69433,
              "read_kilobytes" : 230396,
              "write_kilobytes" : 498544
            }
          ],
          "total" : {
            "operations" : 77169,
            "read_operations" : 7736,
            "write_operations" : 69433,
            "read_kilobytes" : 230396,
            "write_kilobytes" : 498544
          }
        }
      }
    },
    "zlL7F5kRTLWWogzffZXomA" : {
      "timestamp" : 1595231422000,
      "name" : "data-topology-es-2",
      "transport_address" : "10.244.0.63:9300",
      "host" : "10.244.0.63",
      "ip" : "10.244.0.63:9300",
      "roles" : [
        "data"
      ],
      "fs" : {
        "timestamp" : 1595231422001,
        "total" : {
          "total_in_bytes" : 84054204416,
          "free_in_bytes" : 10231291904,
          "available_in_bytes" : 5917450240
        },
        "data" : [
          {
            "path" : "/usr/share/elasticsearch/data/nodes/0",
            "mount" : "/usr/share/elasticsearch/data (/dev/sda3)",
            "type" : "ext4",
            "total_in_bytes" : 84054204416,
            "free_in_bytes" : 10231291904,
            "available_in_bytes" : 5917450240
          }
        ],
        "io_stats" : {
          "devices" : [
            {
              "device_name" : "sda3",
              "operations" : 77048,
              "read_operations" : 7736,
              "write_operations" : 69312,
              "read_kilobytes" : 230396,
              "write_kilobytes" : 496864
            }
          ],
          "total" : {
            "operations" : 77048,
            "read_operations" : 7736,
            "write_operations" : 69312,
            "read_kilobytes" : 230396,
            "write_kilobytes" : 496864
          }
        }
      }
    },
    "tDet2llLQaydoxfYT4TcpQ" : {
      "timestamp" : 1595231421993,
      "name" : "master-topology-es-1",
      "transport_address" : "10.244.0.55:9300",
      "host" : "10.244.0.55",
      "ip" : "10.244.0.55:9300",
      "roles" : [
        "master"
      ],
      "fs" : {
        "timestamp" : 1595231422020,
        "total" : {
          "total_in_bytes" : 84054204416,
          "free_in_bytes" : 10231291904,
          "available_in_bytes" : 5917450240
        },
        "data" : [
          {
            "path" : "/usr/share/elasticsearch/data/nodes/0",
            "mount" : "/usr/share/elasticsearch/data (/dev/sda3)",
            "type" : "ext4",
            "total_in_bytes" : 84054204416,
            "free_in_bytes" : 10231291904,
            "available_in_bytes" : 5917450240
          }
        ],
        "io_stats" : {
          "devices" : [
            {
              "device_name" : "sda3",
              "operations" : 77766,
              "read_operations" : 7748,
              "write_operations" : 70018,
              "read_kilobytes" : 230576,
              "write_kilobytes" : 505892
            }
          ],
          "total" : {
            "operations" : 77766,
            "read_operations" : 7748,
            "write_operations" : 70018,
            "read_kilobytes" : 230576,
            "write_kilobytes" : 505892
          }
        }
      }
    }
  }
}
4

2 回答 2

1

所以，这是我的问题：我已经200Mi通过 PVC 为每个 Elasticsearch 数据节点分配了存储。当我检查_nodes/stats：

 "total" : {
      "total_in_bytes" : 84054204416, <-- ~84Gi
      "free_in_bytes" : 10231291904,
      "available_in_bytes" : 5917450240
    },

所以，期望值应该是200Mi而不是~84Gi。

解释：

因为我是实物集群。默认存储由我们提供hostpath，我们从主机上安装一个目录，而不是一个单独的文件系统。

并kind使用rancher/local-path-provisioner，目前使用它的限制是：

- No support for the volume capacity limit currently.
    - The capacity limit will be ignored for now.

这就是为什么我得到~84Gi（主机）而不是200Mi（通过PVC分配）。

于 2020-07-20T10:13:32.050 回答
1

C-TUE5_cR1ihqrhThpWnsg这是从_nodes/stats输出中获取的主节点的文件系统统计信息：

    "total" : {
      "total_in_bytes" : 84054204416,
      "free_in_bytes" : 10231291904,
      "available_in_bytes" : 5917450240
    },

如您所见，5917450240 / 84054204416 = ~7%，因此该节点上的存储空间已满 93%，因此您会收到该警告。

于 2020-07-20T08:07:24.010 回答