I. Introduction
One of the most effective ways to familiarize yourself with Oracle's true application cluster (RAC) 10g technology is to access an actual Oracle RAC 10g cluster. There is no way to better understand their benefits than simply experiencing them-including fault tolerance, security, load balancing, and scalability.
The core of Oracle RAC is the shared disk subsystem. All nodes in the cluster must be able to access all data of all nodes in the cluster, redo log files, control files a
least 64 MB. 128 MB is recommended.
-------
Hard Disk: MB to 3 GB (Personal Edition is fully installed), or 6 GB (Professional Edition is fully installed). 2 GB recommended. Support LBA48.
-------
Graphics card: SuSE Linux comes with the following models of graphics card drivers:
-ATI: Radeon 9000/9200/9500/9600/9700/9800
-NVidia: GeForce 4, GeForce FX
-Matrox: G450/G550
-------
You may need to manually co
same network segment, uses this attribute to distinguish between different clusters, cluster.name the same group to build a clusterNode.name:node-1//node name, default randomly specifies a name in the name list, cannot be repeatedNode.master:true//Specifies whether the node is eligible to be elected node, the default is True,es is the first machine in the default cluster is master, and if this machine hangs, it will be re-elected masterNode.data:true//Specifies whether the node stores index dat
what is restful? REST (representational state transfer representational status transfer) is a design and development approach to network applications that reduces the complexity of development and increases the scalability of the system. Rest has design concepts and guidelines that are restful in the applications that follow these guidelines. In a rest-style structure, all requests must be made on an object that has a specific address set by the URL. For example, if you use/schools/to represent
Operation of Curl
Curl is an open source file Transfer tool that works with URL syntax in the command line mode, and using curl makes it easy to implement common get/post requests. Simply think of a tool that can access the URL below the command line. In the CentOS default library there are curl tools, if not please install Yum.
Curl
-x Specifies HTTP request method with head GET POST PUT DELETE
-d Specifies the data to transfer
-h Specifies HTTP request header information
Browse ES servers
Curl
Elasticsearch's official websitehttps://www.elastic.co/First, installationElasticsearch is based on lence, and Lence is an open source library written in Java that relies on Java's operating environment. The Elasticsearch version that is now in use is 1.6, and it requires a version of jdk1.7 or more.This article uses the Linux system, installs the configuration good Java environment, the download down, the decompression after the direct execution starts is OK.1. Install the boot elasticsearch:CD
, using "XP Restore origin is invalid", it is useless to uninstall the BeTwin software and install the BeTwin software. Because the registry contains files, you must install a new system. After installing the new system, we recommend that you back up your GHOST!
1. Update the latest driver
The specified Update driver must be updated for the "dual-head graphics card (VGA + DVI plus adapter to VGA)"; otherwise, the system cannot be accessed after BETWIN is installed, as a result, the machine is r
* H3d2 engine development
In early years, h3d engine now has a commercial game product application. Based on OpenGL h3d, three rendering pipelines with GL 1.2.1, 1.3 and 1.5 were originally designed. Is In tnt2 (radeon), GEFORCE2-4 (RADEON8500-9200), geforce5 (ati9500-) three platforms respectively run fixed pipeline, with VP, with VP and FP graphics function. The hardware at that time was probably divided
Article for reference, the original link https://www.dubby.cn/detail.html?id=9077Basic syntax1. Using ToolsPostman2. Index creation PUT http://127.0.0.1:9200/people/{" settings": { "number_of_shards": 3,//number of shards, default 5 "Number_of_replicas": 1///Number of backups }, Settings can not be set, by defaultConstruct a structured index that maps "mappings": { "person": {//struct type "Properties": {//Set property
Background boot ElasticsearchElasticsearch-2.2.0/bin/elasticsearch-dLaunch Kibana (easy for web-side viewing)Kibana-4.4.1-linux-x64/bin/kibanaCurl Command– Simple to think of as a tool to access URLs at the command line–curl is an open source file Transfer tool that uses URL syntax to work in the command line mode, usingCurl makes it easy to implement common get/post requests.–curl–-x how to specify HTTP requests–head GET POST PUT DELETE–-d specifying the data to transferTo create an index libra
ES can automatically organize nodes of the same cluster name into the cluster by setting "node name" and "Cluster Name", and make many technologies transparent to users.
If the user wants to manage the status of the view cluster, it can be done through some rest APIs.
Other ES document translation reference: Elasticsearch Document Summary
REST API UsageES provides a number of comprehensive APIs that can be broadly divided into the following categories:1 checking the health of cluste
other hand, VRAM memory is limited, and if VRAM memory is used up, some data must be put into GTT memory.Usually GTT memory is on demand, and is used for devices, such as Radeon R600 graphics card can use up to 512M of system memory (this is set in the Linux kernel), a one-time allocation of 512M continuous memory for the device is not possible to succeed in the Linux system, And even if it succeeds, there is quite a lot of memory that can be wasted.
0.0.0.0,
# Any IP network.bind_host:0.0.0.0 #设置其它节点和该节点交互的ip地址 that binds to this machine
, which is
automatically judged if it is not set
#值必须是个真实的ip地址
network.publish_host:192.168.1.111
#设置对外服务的http端口, defaults to 9200
http.port:9200
#设置节点之间交互的tcp端口, default is 9300
transport.tcp.port:9300
#是否允许跨域REST请求
http.cors.enabled:true
#允许 where
REST requests come from Http.cors.allow-origin: "
:
' Aggregations ': {/ /represents an aggregation operation, you can use Aggs instead
of '
1.1 Metric type (Metric) aggregation
(1) Min Aggregation
The minimum value query, which is used on the number Type field. Check the minimum age value for Class 2.
Curl-xpost "192.168.1.101:9200/student/student/_search"
-d '
{
"query": { //You can first use query to get the dataset you need
"term": {
"Classno": "2"
I. Changes in statistical information-related ordersFor cluster state Cluster_state, node information Nodes_info, node statistics nodes_stats and index Information indices_stats command format are unified, such as viewing the cluster information using command:Curl-xget Http://localhost:9200/_cluster/state/nodes?pretty=1To view node statistics:Curl-xget http://localhost:9200/_nodes/stats?pretty=1 Cluster sta
version number used by the Elasticsearch node, otherwise they may not be recognized.
More instructions on the Java API can be found here the Guide transmits JSON to the RESTful API via HTTP
Other languages can communicate with Elasticsearch's RESTful API via Port 9200. In fact, as you can see, you could even use the line command curl to communicate with Elasticsearch.The requests made to Elasticsearch are consistent with the components of all other H
CURL (clients for URL) is a common command line tool used to transmit data based on URLs. It supports HTTP, HTTPS, FTP, and other protocols. In fact, on Windows, a similar command Invoke-WebRequest has been added since Powershell 3.0. The following Help information is displayed when you execute Get-Help Invoke-WebRequest. Take a look at the ALIASES section. The curl is in the column. That is to say, you can directly use curl as the command name!
The syntax of Invoke-WebRequest is different fr
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.