Daily index not created

Elastic Stack Elasticsearch
1

Hi Team,

On my single test server with 8G of RAM (1955m to JVM) having es v 7.4, I have 12 application indices + few system indices like (.monitoring-es-7-2021.08.02, .monitoring-logstash-7-2021.08.02, .monitoring-kibana-7-2021.08.02) getting created daily. So on an average I can see daily es creates 15 indices.

today I can see only two indices are created.

curl -slient -u elastic:xxxxx 'http://127.0.0.1:9200/_cat/indices?v' -u elastic |  grep '2021.08.03'
Enter host password for user 'elastic':
yellow open   metricbeat-7.4.0-2021.08.03                KMJbbJMHQ22EM5Hfw   1   1     110657            0     73.9mb         73.9mb
green  open   .monitoring-kibana-7-2021.08.03            98iEmlw8GAm2rj-xw   1   0          3            0      1.1mb          1.1mb

and reason for above I think is below,

While searching for logs,

e.s logs

[2021-08-03T12:14:15,394][WARN ][o.e.x.m.e.l.LocalExporter] [elasticsearch_1] unexpected error while indexing monitoring document org.elasticsearch.xpack.monitoring.exporter.ExportException: org.elasticsearch.common.ValidationException: Validation Failed: 1: this action would add [1] total shards, but this cluster currently has [1000]/[1000] maximum shards open;

logstash logs for application index and filebeat index

``
[2021-08-03T05:18:05,246][WARN ][logstash.outputs.elasticsearch][main] Could not index event to Elasticsearch. {:status=>400, :action=>["index", {:_id=>nil, :_index=>"ping_server-2021.08.03", :_type=>"_doc", :routing=>nil}, #LogStash::Event:0x44b98479], :response=>{"index"=>{"_index"=>"ping_server-2021.08.03", "_type"=>"_doc", "_id"=>nil, "status"=>400, "error"=>{"type"=>"validation_exception", "reason"=>"Validation Failed: 1: this action would add [2] total shards, but this cluster currently has [1000]/[1000] maximum shards open;"}}}}

[2021-08-03T05:17:38,230][WARN ][logstash.outputs.elasticsearch][main] Could not index event to Elasticsearch. {:status=>400, :action=>["index", {:_id=>nil, :_index=>"filebeat-7.4.0-2021.08.03", :_type=>"_doc", :routing=>nil}, #LogStash::Event:0x1e2c70a8], :response=>{"index"=>{"_index"=>"filebeat-7.4.0-2021.08.03", "_type"=>"_doc", "_id"=>nil, "status"=>400, "error"=>{"type"=>"validation_exception", "reason"=>"Validation Failed: 1: this action would add [2] total shards, but this cluster currently has [1000]/[1000] maximum shards open;"}}}}
``

Adding active and unassigned shards totals to 1000

"active_primary_shards" : 512,
  "active_shards" : 512,
  "relocating_shards" : 0,
  "initializing_shards" : 0,
  "unassigned_shards" : 488,
  "delayed_unassigned_shards" : 0,
  "active_shards_percent_as_number" : 51.2

if I check with below command, I see all unassigned shards are replica shards

curl -slient -XGET -u elastic:xxxx http://localhost:9200/_cat/shards | grep 'UNASSIGNED'

.
.
dev_app_server-2021.07.10           0 r UNASSIGNED                            
apm-7.4.0-span-000028               0 r UNASSIGNED                                                      
ping_server-2021.07.02              0 r UNASSIGNED                            
api_app_server-2021.07.17           0 r UNASSIGNED                            
consent_app_server-2021.07.15       0 r UNASSIGNED

Q. So for now, can I safely delete unassigned shards to free up some shards as its single node cluster?

Q. Can I changed the settings from allocating 2 shards (1 primary and 1 replica) to 1 primary shard being its a single server for each index online?

Q. If I have to keep one year of indices, Is below calculation correct?

15 indices daily with one primary shard * 365 days = 5475 total shards (or say 6000 for round off)

Q. Can I set 6000 shards as shard limit for this node so that I will never face this mentioned shard issue?

Thanks,

2

Hi Team,

can someone please reply.

Thanks,

3

What is the output from the _cluster/stats?pretty&human API?

We will, but please have patience :slight_smile: There are no SLAs on these forums.

4

That sounds like a very bad idea as you already have too many shards in the cluster. Please read this blog post for some practical guidance. I would recommend you switch to using monthly indices in order to reduce the shard count if you are keeping data that long.

5

Hi @warkolm, Thanks for your reply. Sure

Here is the output

{
  "_nodes" : {
    "total" : 1,
    "successful" : 1,
    "failed" : 0
  },
  "cluster_name" : "elastic",
  "cluster_uuid" : "W0ZPho4SZ4qng",
  "timestamp" : 1628047609591,
  "status" : "yellow",
  "indices" : {
    "count" : 511,
    "shards" : {
      "total" : 511,
      "primaries" : 511,
      "replication" : 0.0,
      "index" : {
        "shards" : {
          "min" : 1,
          "max" : 1,
          "avg" : 1.0
        },
        "primaries" : {
          "min" : 1,
          "max" : 1,
          "avg" : 1.0
        },
        "replication" : {
          "min" : 0.0,
          "max" : 0.0,
          "avg" : 0.0
        }
      }
    },
    "docs" : {
      "count" : 59629959,
      "deleted" : 6270181
    },
    "store" : {
      "size" : "22gb",
      "size_in_bytes" : 23697234465
    },
    "fielddata" : {
      "memory_size" : "212.2kb",
      "memory_size_in_bytes" : 217296,
      "evictions" : 0
    },
    "query_cache" : {
      "memory_size" : "2.8mb",
      "memory_size_in_bytes" : 3000910,
      "total_count" : 3542060,
      "hit_count" : 67088,
      "miss_count" : 3474972,
      "cache_size" : 884,
      "cache_count" : 8562,
      "evictions" : 7678
    },
    "completion" : {
      "size" : "0b",
      "size_in_bytes" : 0
    },
    "segments" : {
      "count" : 3060,
      "memory" : "94.8mb",
      "memory_in_bytes" : 99447725,
      "terms_memory" : "63.5mb",
      "terms_memory_in_bytes" : 66622780,
      "stored_fields_memory" : "8.5mb",
      "stored_fields_memory_in_bytes" : 9000424,
      "term_vectors_memory" : "0b",
      "term_vectors_memory_in_bytes" : 0,
      "norms_memory" : "5.3mb",
      "norms_memory_in_bytes" : 5584448,
      "points_memory" : "6.9mb",
      "points_memory_in_bytes" : 7338065,
      "doc_values_memory" : "10.3mb",
      "doc_values_memory_in_bytes" : 10902008,
      "index_writer_memory" : "12.7mb",
      "index_writer_memory_in_bytes" : 13416120,
      "version_map_memory" : "0b",
      "version_map_memory_in_bytes" : 0,
      "fixed_bit_set" : "5.1mb",
      "fixed_bit_set_memory_in_bytes" : 5400104,
      "max_unsafe_auto_id_timestamp" : 1627879837696,
      "file_sizes" : { }
    }
  },
  "nodes" : {
    "count" : {
      "total" : 1,
      "coordinating_only" : 0,
      "data" : 1,
      "ingest" : 1,
      "master" : 1,
      "ml" : 1,
      "voting_only" : 0
    },
    "versions" : [
      "7.4.0"
    ],
    "os" : {
      "available_processors" : 2,
      "allocated_processors" : 2,
      "names" : [
        {
          "name" : "Linux",
          "count" : 1
        }
      ],
      "pretty_names" : [
        {
          "pretty_name" : "CentOS Linux 7 (Core)",
          "count" : 1
        }
      ],
      "mem" : {
        "total" : "7.6gb",
        "total_in_bytes" : 8201400320,
        "free" : "139.6mb",
        "free_in_bytes" : 146436096,
        "used" : "7.5gb",
        "used_in_bytes" : 8054964224,
        "free_percent" : 2,
        "used_percent" : 98
      }
    },
    "process" : {
      "cpu" : {
        "percent" : 29
      },
      "open_file_descriptors" : {
        "min" : 3190,
        "max" : 3190,
        "avg" : 3190
      }
    },
    "jvm" : {
      "max_uptime" : "32.4d",
      "max_uptime_in_millis" : 2807599834,
      "versions" : [
        {
          "version" : "13",
          "vm_name" : "OpenJDK 64-Bit Server VM",
          "vm_version" : "13+33",
          "vm_vendor" : "AdoptOpenJDK",
          "bundled_jdk" : true,
          "using_bundled_jdk" : true,
          "count" : 1
        }
      ],
      "mem" : {
        "heap_used" : "1.1gb",
        "heap_used_in_bytes" : 1278490720,
        "heap_max" : "1.8gb",
        "heap_max_in_bytes" : 2033582080
      },
      "threads" : 169
    },
    "fs" : {
      "total" : "63.9gb",
      "total_in_bytes" : 68707921920,
      "free" : "14.3gb",
      "free_in_bytes" : 15459770368,
      "available" : "14.3gb",
      "available_in_bytes" : 15459770368
    },
    "plugins" : [ ],
    "network_types" : {
      "transport_types" : {
        "security4" : 1
      },
      "http_types" : {
        "security4" : 1
      }
    },
    "discovery_types" : {
      "zen" : 1
    },
    "packaging_types" : [
      {
        "flavor" : "default",
        "type" : "rpm",
        "count" : 1
      }
    ]
  }
}
6

Hi @Christian_Dahlqvist, Thanks for your reply.

If I change in /etc/logstash/conf.d/logstash.conf from index => "%{type}-%{+YYYY.MM.dd}" to index => "%{type}-%{+YYYY.MM}" then will it create index on monthly basis and not daily or I have to use ILM here?.

current config in logstash.conf for ping_server index.

  if [log_type] == "ping_server" {
  elasticsearch {
    hosts => ['http://10.1.1.1:9200']
    index => "%{type}-%{+YYYY.MM.dd}"
        user => elastic
    password => xxxx
      }
 }

Thanks,

7

You've got 500+ shards on a single node with only 22GB of data in those shards. You really need to reduce your shard count.

That's EOL so please update ASAP.

8

Hi @Christian_Dahlqvist, Can you please confirm the way to change from daily to something longer from the mentioned two ways?

9

The two ways you mentioned seem fine.

10

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