Connecting to Elasticsearch(ES) using the elasticsearch-head panel, version: 7.10.2, I found the following issues:
{
"name" : "DESKTOP-C76AMDM",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "g5yrfnSXS6CVusCV5XUXMA",
"version" : {
"number" : "7.10.2",
"build_flavor" : "default",
"build_type" : "zip",
"build_hash" : "747e1cc71def077253878a59143c1f785afa92b9",
"build_date" : "2021-01-13T00:42:12.435326Z",
"build_snapshot" : false,
"lucene_version" : "8.7.0",
"minimum_wire_compatibility_version" : "6.8.0",
"minimum_index_compatibility_version" : "6.0.0-beta1"
},
"tagline" : "You Know, for Search"
}
Viewudp-test-2021.01.27Index Settings:
The hyperlink login is visible.
You can also view it through Kibana, as shown below:
{
"udp-test-2021.01.27" : {
"settings" : {
"index" : {
"routing" : {
"allocation" : {
"include" : {
"_tier_preference" : "data_content"
}
}
},
"number_of_shards" : "1",
"provided_name" : "udp-test-2021.01.27",
"creation_date" : "1611732606460",
"number_of_replicas" : "1",
"uuid" : "Ss4YOET8Rym1czi7CeyHgg",
"version" : {
"created" : "7100299"
}
}
}
}
}
number_of_shards refers to the number of shards to be made by the index, which can only be specified when the index is created, and cannot be modified later.
number_of_replicas refers to how many copies each shard has, which can be dynamically modified later
primary shard: The primary shard, each document is stored in a shard, when you store a document, the system will first store it in the main shard, and then it will be copied to a different copy. By default, an index has 5 primary shards. You can set the number of shards in advance, and once the shard is created, the number of shards cannot be modified.
Replica shard: Replica shard, each shard has zero or more replicas. Replicas are primarily replicated of the primary shard, which can increase high availability and improve performance.
By default, a master assignment has one replica, but the number of replicas can be dynamically increased later in the configuration.
The replica must be deployed on a different node, not on the same node as the primary shard.
solution
Use Kibana to send a PUT request to modify the index settings, as shown in the following image:
Or send the request using the curl command, which is as follows:
After modification, the ES status is normal, as shown in the following figure:
(End)
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Posted on 1/28/2021 2:27:14 PM
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