Elasticsearch Introduction
Elasticsearch is a full-text search server that can also be used as a NoSQL database to store documents and data in any format, while at the same time doing big data analysis. Elasticsearch has the following characteristics:
1. Full-text search engine, ES is a resume on the lucebe of the Kaiyuan Soso engine, can be used for full-text se
What is the document? An object is equivalent to a record recording of MySQLReference:Http://www.learnes.net/data/README.htmlCurl 192.168.100.10:9200?preetycurl 192.168.100.10:9200/_count?prettyUsage of curl in the shell-x specifies that the request method defaults to-xget-I also return the request result when I return the data-D Data sentThis return value means that our index request has been successfully created, including _index, _type, and _id met
In the development of CMS with PHP, to use the PHP Curl function, the default state, this function needs to open curl expansion, with the use of the host, can be opened through the php.ini file extension, the following methods:
1, open php.ini, positioning to Extension=php_curl.dll, the front of the;
2, the PHP directory under the EXT directory: Php_curl.dll, Libeay32.dll and ssleay32.dll three files copi
First, the editing environment:
1. The confidential Installation Curl command, download address: https://curl.haxx.se/download.html (note: There are too many versions, we download a as long as there are curl.exe)
2. Need Jsoup jar, this search on Baidu can see a lot of.
3. Test words need to install Acunetix11, this well, the current online has not provided (anyway, I did not find) free, we first temporarily ignore this point, continue to go on, cut
Notes on elasticsearch Security Settings
In versions earlier than elasticsearch1.4.3, apart from MVEL security vulnerabilities, there are also Groovy vulnerabilities. For details, refer to: Click to open the link. Here we will talk about an important configuration that you should pay attention to when using elasticsearch1.4.3:
As a distributed server, it is generally deployed on the Intranet and provided to applications as a service. The default IP
Note: elasticsearch Security Settings
In versions earlier than elasticsearch1.4.3, apart from MVEL security vulnerabilities, there are also Groovy vulnerabilities. For details, refer to: Click to open the link. Here we will talk about an important configuration that you should pay attention to when using elasticsearch1.4.3:
As a distributed server, it is generally deployed on the Intranet and provided to applications as a service. The default IP add
First, Elasticsearch participle
In the Elasticsearch, the Chinese participle is supported, but all the participle is in accordance with the word word, such as the standard word breaker standard, you can follow the way to query how to do participle
Http://localhost:9200/iktest/_analyze?prettyanalyzer=standardtext= People's Republic of China
The above example uses the standard to carry on the participle, t
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
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
Java uses ElasticSearch to query millions of users nearby,
The previous article introduced how ElasticSearch uses Repository and ElasticSearchTemplate to construct complex query conditions, and briefly introduced the use of geographical location in ElasticSearch.
In this article, we will take a look at the use of ElasticSearc
The default curl in Ubuntu14.04 is in the usrbin directory, and the version is 7.35libcurl or 7.35. The newly downloaded curl is 7.48 and installed in usrlocalcurl. The curl version is 7.48 and the libcurl version is 7.35. If you delete curl under the usrbin directory, the default
":" String "}," raw ": {" type ":" string "," index ":" Not_analyzed "}}}}The above file says that we define its mapping for Index_type, the index type. The point is to map the name field to two, one to name the index analysis, and the other to not analyze raw, which will not split the phrase New York. So when we do the search, we can do the term aggregation for the Name.raw field and get the number of occurrences in all cities. Term Aggregation's The rest method requests are written as follows
A script for monitoring the Elasticsearch index was found in the Nagios community, and then modified to use the listening IP that is normally used for incoming elasticsearch for using a script that monitors the Elasticsearch health state in Nagios#!/bin/bash#check_elasticsearch_health.sh#memofornagiosoutputsstate_ok=0state_warning=1state _critical=2state_unknown=
to manage packages in the project, download the following address: https://getcomposer.org/
3. Opening of Curl and OpenSSL in php.ini
After installing the composer, the following procedures are used:
(1) Create a new directory, I here the project name is: Phpcrawler.
(2) Add the JSON file to the inside:
{
"require": {"Elasticsearch/elasticsearch":
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
Interface issues
The most important thing about PHP calling interface is using curl to crawl information
Copy Code code as follows:
$ch = Curl_init ();
curl_setopt ($ch, Curlopt_url, $url); URL address
curl_setopt ($ch, Curlopt_post, true); Whether to post a request
curl_setopt ($ch, Curlopt_postfields, $data); Data passed by POST request
curl_setopt ($ch, Curlopt_httpheader, $header);/Set Header
curl_setopt ($ch, Curlopt_returntransfer
, sorting and statistics and the large number of machines still use such a method is a little too hard.
Open source real-time log analysis Elk platform can perfectly solve our problems above, elk by Elasticsearch, Logstash and Kiabana three open source tools. Official website: https://www.elastic.co/products
Elasticsearch is an open source distributed search engine, it features: distributed, 0 configuration
This article mainly introduces PHP using curl in the detailed analysis of Php curl and common pits, and now share to everyone, but also for everyone to make a reference. Let's take a look at it with a little knitting.
Tanabata, as a development, sister did not have to tease "tease" down the server bar, sister have to tease the classmate that left hug sister right embrace server bar, moreover sister i
Php uses CURL to forge IP addresses and source instances. Php uses CURL to forge IP addresses and source instances. curl to forge an instance in this article describes how php uses CURL to forge IP addresses and sources. Share it with you for your reference. The specific analysis is as follows: Counterfeit php uses
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