Elasticsearch adalah sebuah basis data yang diciptakan untuk menyimpan dokumen dalam bentuk json, dan fokus pada realtime indexing. Beberapa bulan yang lalu, sempat mencoba-coba untuk menginstall ELK stack (elasticsearch, logstash, kibana) dengan panduan yang ada di sini. Sampai akhirnya berhasil install dengan tampilan Kibana kurang lebih seperti berikut:
Ya, Kibana dapat memberikan visualisasi dengan sangat baik pada data-data yang disimpan di elasticsearch. Namun karena fungsi utama dari elasticsearch adalah memvisualisasikan data yang besar, maka tak dapat dihindari bahwa space pada disk yang dipakai pun besar. Seperti pada saat dicek di bawah ini.
[root@ns1 ~]# curl -XGET 'http://localhost:9200/_cluster/stats?human&pretty'
{
"timestamp" : 1467291737491,
"cluster_name" : "elasticsearch",
"status" : "yellow",
"indices" : {
"count" : 338,
"shards" : {
"total" : 1686,
"primaries" : 1686,
"replication" : 0.0,
"index" : {
"shards" : {
"min" : 1,
"max" : 5,
"avg" : 4.988165680473373
},
"primaries" : {
"min" : 1,
"max" : 5,
"avg" : 4.988165680473373
},
"replication" : {
"min" : 0.0,
"max" : 0.0,
"avg" : 0.0
}
}
},
"docs" : {
"count" : 195222619,
"deleted" : 0
},
"store" : {
"size" : "47gb",
"size_in_bytes" : 50527949332,
"throttle_time" : "0s",
"throttle_time_in_millis" : 0
},
"fielddata" : {
"memory_size" : "62.5kb",
"memory_size_in_bytes" : 64040,
"evictions" : 0
},
"query_cache" : {
"memory_size" : "535.8kb",
"memory_size_in_bytes" : 548672,
"total_count" : 5130838,
"hit_count" : 718,
"miss_count" : 5130120,
"cache_size" : 139,
"cache_count" : 201,
"evictions" : 62
},
"completion" : {
"size" : "0b",
"size_in_bytes" : 0
},
"segments" : {
"count" : 11173,
"memory" : "541.1mb",
"memory_in_bytes" : 567468090,
"terms_memory" : "337.4mb",
"terms_memory_in_bytes" : 353798310,
"stored_fields_memory" : "18.7mb",
"stored_fields_memory_in_bytes" : 19647016,
"term_vectors_memory" : "0b",
"term_vectors_memory_in_bytes" : 0,
"norms_memory" : "5.5mb",
"norms_memory_in_bytes" : 5781952,
"doc_values_memory" : "179.5mb",
"doc_values_memory_in_bytes" : 188240812,
"index_writer_memory" : "0b",
"index_writer_memory_in_bytes" : 0,
"index_writer_max_memory" : "1.9gb",
"index_writer_max_memory_in_bytes" : 2137069155,
"version_map_memory" : "0b",
"version_map_memory_in_bytes" : 0,
"fixed_bit_set" : "0b",
"fixed_bit_set_memory_in_bytes" : 0
},
"percolate" : {
"total" : 0,
"time" : "0s",
"time_in_millis" : 0,
"current" : 0,
"memory_size_in_bytes" : -1,
"memory_size" : "-1b",
"queries" : 0
}
},
"nodes" : {
"count" : {
"total" : 1,
"master_only" : 0,
"data_only" : 0,
"master_data" : 1,
"client" : 0
},
"versions" : [ "2.3.3" ],
"os" : {
"available_processors" : 8,
"allocated_processors" : 8,
"mem" : {
"total" : "2.6gb",
"total_in_bytes" : 2807103488
},
"names" : [ {
"name" : "Linux",
"count" : 1
} ]
},
"process" : {
"cpu" : {
"percent" : 2
},
"open_file_descriptors" : {
"min" : 21238,
"max" : 21238,
"avg" : 21238
}
},
"jvm" : {
"max_uptime" : "29.7d",
"max_uptime_in_millis" : 2572035456,
"versions" : [ {
"version" : "1.8.0_72",
"vm_name" : "Java HotSpot(TM) 64-Bit Server VM",
"vm_version" : "25.72-b15",
"vm_vendor" : "Oracle Corporation",
"count" : 1
} ],
"mem" : {
"heap_used" : "4.4gb",
"heap_used_in_bytes" : 4810868200,
"heap_max" : "11.9gb",
"heap_max_in_bytes" : 12815171584
},
"threads" : 110
},
"fs" : {
"total" : "97.6gb",
"total_in_bytes" : 104818769920,
"free" : "13gb",
"free_in_bytes" : 14055034880,
"available" : "8.1gb",
"available_in_bytes" : 8706879488
},
"plugins" : [ ]
}
}
Pada bagian store, ada space 47 gb yang dipakai. Padahal space total (seperti yang tertera pada fs) hanyalah 97.6 gb. Oleh karena itu, timbul keinginan untuk menghapus data yang ada pada elasticsearch.
Cara menghapus data tersebut cukup dengan satu perintah berikut:
curl -XDELETE 'http://localhost:9200/_all'
Dan hasilnya terlihat pada json di bawah ini
{
"timestamp" : 1467292083679,
"cluster_name" : "elasticsearch",
"status" : "yellow",
"indices" : {
"count" : 4,
"shards" : {
"total" : 16,
"primaries" : 16,
"replication" : 0.0,
"index" : {
"shards" : {
"min" : 1,
"max" : 5,
"avg" : 4.0
},
"primaries" : {
"min" : 1,
"max" : 5,
"avg" : 4.0
},
"replication" : {
"min" : 0.0,
"max" : 0.0,
"avg" : 0.0
}
}
},
"docs" : {
"count" : 1914,
"deleted" : 0
},
"store" : {
"size" : "1.7mb",
"size_in_bytes" : 1853082,
"throttle_time" : "0s",
"throttle_time_in_millis" : 0
},
"fielddata" : {
"memory_size" : "0b",
"memory_size_in_bytes" : 0,
"evictions" : 0
},
"query_cache" : {
"memory_size" : "0b",
"memory_size_in_bytes" : 0,
"total_count" : 18,
"hit_count" : 0,
"miss_count" : 18,
"cache_size" : 0,
"cache_count" : 0,
"evictions" : 0
},
"completion" : {
"size" : "0b",
"size_in_bytes" : 0
},
"segments" : {
"count" : 56,
"memory" : "754.5kb",
"memory_in_bytes" : 772652,
"terms_memory" : "619.8kb",
"terms_memory_in_bytes" : 634748,
"stored_fields_memory" : "17kb",
"stored_fields_memory_in_bytes" : 17472,
"term_vectors_memory" : "0b",
"term_vectors_memory_in_bytes" : 0,
"norms_memory" : "15.1kb",
"norms_memory_in_bytes" : 15552,
"doc_values_memory" : "102.4kb",
"doc_values_memory_in_bytes" : 104880,
"index_writer_memory" : "2.7mb",
"index_writer_memory_in_bytes" : 2852836,
"index_writer_max_memory" : "1.1gb",
"index_writer_max_memory_in_bytes" : 1281517152,
"version_map_memory" : "11.9kb",
"version_map_memory_in_bytes" : 12190,
"fixed_bit_set" : "0b",
"fixed_bit_set_memory_in_bytes" : 0
},
"percolate" : {
"total" : 0,
"time" : "0s",
"time_in_millis" : 0,
"current" : 0,
"memory_size_in_bytes" : -1,
"memory_size" : "-1b",
"queries" : 0
}
},
"nodes" : {
"count" : {
"total" : 1,
"master_only" : 0,
"data_only" : 0,
"master_data" : 1,
"client" : 0
},
"versions" : [ "2.3.3" ],
"os" : {
"available_processors" : 8,
"allocated_processors" : 8,
"mem" : {
"total" : "6.8gb",
"total_in_bytes" : 7333371904
},
"names" : [ {
"name" : "Linux",
"count" : 1
} ]
},
"process" : {
"cpu" : {
"percent" : 3
},
"open_file_descriptors" : {
"min" : 313,
"max" : 313,
"avg" : 313
}
},
"jvm" : {
"max_uptime" : "29.7d",
"max_uptime_in_millis" : 2572382149,
"versions" : [ {
"version" : "1.8.0_72",
"vm_name" : "Java HotSpot(TM) 64-Bit Server VM",
"vm_version" : "25.72-b15",
"vm_vendor" : "Oracle Corporation",
"count" : 1
} ],
"mem" : {
"heap_used" : "4.3gb",
"heap_used_in_bytes" : 4646757064,
"heap_max" : "11.9gb",
"heap_max_in_bytes" : 12815171584
},
"threads" : 111
},
"fs" : {
"total" : "97.6gb",
"total_in_bytes" : 104818769920,
"free" : "60.8gb",
"free_in_bytes" : 65299656704,
"available" : "55.8gb",
"available_in_bytes" : 59951501312
},
"plugins" : [ ]
}
}
Halo semua Github memiliki fitur terkait Pull Request yang cukup luar biasa, yaitu dapat melakukan…
Hello everyone! 👋 Welcome to our step-by-step guide on using kubeadm to install Kubernetes. It's…
Proxmox adalah hypervisor yang populer digunakan karena penggunaannya yang cukup simpel jika dibandingkan dengan hypervisor…
This post is mirror of https://forums.rancher.com/t/failed-upgrade-from-v0-8-1-to-v1-0-0-caused-by-pv-created-before-v0-6-2/17586 I scale down all pods that has vpc to…
Ubuntu Konfigurasi network pada Ubuntu Server 18.04 berbeda dengan ubuntu versi sebelumnya. Versi sebelumnya menggunakan…
For detailed problems, see https://notulensiku.com/2019/02/fix-integrated-terminal-font-vscode/ To solve on mac, you need to install powerline fonts…