I. Routing documents to shardsWhen you index a document, he is stored on a separate primary shard. The Elasticsearch is based on an algorithm to locate the Shard on which it resides.Shard=hash (routing)%number_of_primary_shardsThe routing value is an arbitrary string, which is _id by default but can also be customized. This routing generates a number by a hash function and then divides the number of primary slices to get an elm. This is why the number
1. No log Analysis System 1.1 operation and maintenance pain points1. Operations are constantly looking at various logs.2. The fault has occurred before looking at the log (time issue. )3. Many nodes, log scattered, the collection of logs became a problem.4. Run logs, errors and other logs, no specification directory, collect difficulties.1.2 Environmental Pain Points1. Developers cannot log on to the online server to view detailed logs.2. Each system has a log, log data scattered difficult to f
Elasticsearch IntroductionElasticsearch is a real-time, distributed search and analysis engine. It can help you deal with large-scale data at an unprecedented rate.It can be used for full-text search, structured search and analysis, and of course you can combine the three.Elasticsearch is a search engine based on the full-text search engine Apache lucene™, which can be said that Lucene is the most advanced and efficient full-featured open source searc
Search engine Selection Research Document ELASTICSEARCH Introduction *Elasticsearch is a real-time, distributed search and analysis engine. It can help you deal with large-scale data at an unprecedented rate.It can be used for full-text search, structured search and analysis, and of course you can combine the three.Elasticsearch is a search engine based on the full-text search engine Apache lucene™, which c
Elasticsearch Introduction *Elasticsearch is a real-time, distributed search and analysis engine. It can help you deal with large-scale data at an unprecedented rate.It can be used for full-text search, structured search and analysis, and of course you can combine the three.Elasticsearch is a search engine based on the full-text search engine Apache lucene™, which can be said that Lucene is the most advance
Recently participating in a project design of real-time statistical queries based on Elasticsearch as the underlying data framework to provide large data volumes (billion levels), took some time to learn the basic theoretical knowledge of elasticsearch, organized a bit, hoping to be interested in Elasticsearch The students who want to know have some help. At the
Elasticsearch REST APIElasticsearch supports HTTP request-response service, HTTP requests are broken by default with 9200, so the Curl command allows you to send an HTTP request and get the JSON return content. Common rest APIs include a few:Check ES cluster statuscurl http://localhost:9200/_cat/health?vCheck the status of the ES nodecurl http://localhost:9200/_cat/nodes?vQuerying all the Indexescurl http://localhost:9200/_cat/indices?vCreate an index
Installing JAVA
Yum Install Java-1.7.0-openjdk-y
Installing Elasticsearch
Elasticsearch only one requirement is to install the latest version of Java. You can download it on the official website: http://www.oracle.com/technetwork/java/javase/downloads/index.html.You can download it here to the latest version of Elasticsearch:https://www.elastic.co/downloads/elasticsearch.In writing this article, I
Kibana + Logstash + Elasticsearch log query system, kibanalostash
The purpose of this platform is to facilitate log query During O M and R D. Kibana is a free web shell. Logstash integrates various log collection plug-ins and is also an excellent regular-cut log tool. Elasticsearch is an open-source search engine framework (supporting cluster architecture ).
1 installation requirement 1.1 theoretical Topo
Document directory
4. Performance Tuning
The purpose of this platform is to facilitate log query During O M and R D. Kibana is a free web shell. logstash integrates various log collection plug-ins and is also an excellent regular-cut log tool. elasticsearch is an open-source search engine framework (supporting cluster architecture ).
1 installation requirement 1.1 theoretical Topology
1.2 installation environment 1.2.1 hardware environment
192
This is the information that beginners can easily understand when installing logstash + kibana + elasticsearch + redis. The installation has been completed according to the following steps.
There are two servers:192.168.148.201logstash index, redis, elasticsearch, kibana, JDK192.168.148.129 logstash agent, JDK
1System Application
Logstash: a fully open-source tool for log collection, analysis, and storage.
elasticsearch Cluster Server configurationFirst, installationElasticsearch is based on lence, and Lence is an open source library written in Java that relies on the Java runtime environment. The Elasticsearch version currently in use is 1.6, which requires jdk1.7 or more versions.This article uses the Linux system, the installation of a good Java environment, the download down, after decompression directly
Install under *nux
Under *nux, ES officially has provided the compiled Deb and RPM packages, but you need to make sure that the installed Java Virtual Environment (currently es1.6 and version 1.7 can choose version 1.8 Java), the installation steps are as follows:1. Download es deb/rpm Package and execute an orderDeb Package Installation: Dpkg-i Elasticsearch-1.6.0.debRPM Package Installation: Rpm-i elasticsearch
We have started elasticsearch in the previous article, and then we can communicate with elasticsearch, such as inserting data, retrieving data, deleting data, and so on. Elasticsearch provides two ways to communicate with Java APIs and restful APIs. Java API
If you are using the Java,elasticsearch built-in two client,
Today, when learning Lucene, see the book that describes Elasticsearch,elasticsearch is a Lucene-based search server. It provides a distributed multi-user capability full-text search engine, based on the RESTful web interface, Elasticsearch is developed in Java. Now take a look at the steps I have to install Elasticsearch
For an introduction to curl, pleaseCurl of Elasticsearch Learning conceptTo start ES, pleaseElasticsearch front and rear operation and stop (TAR package mode) Elasticsearch front and rear station operation and stop (RPM package mode) Create an index library, I named Zhouls here[Email protected] elasticsearch-2.4.3]$ curl-xput ' http://192.168.80.200:9200/zhouls'
Configure the elasticsearch and river-mongodb plug-ins on windowsInstall ElasticSearch
1. Download The elasticsearch installation package.
2. decompress the elasticsearch package to the installation directory. For example, D: \ Elasticsearch, and add D: \
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