measures, the first time alarm. For the third and 4th, it is necessary to classify the anomalies.So a log collection system prototype sketched out: With the collection of logs (for distributed environment, the log distributed on each server), log statistics (the most statistics of the exception, often this is the hidden danger of the system), monitoring alarm (abnormal or abnormal accumulation to a certain amount of text messages or messages in the form of alarm) , and the visual interface for
In the Google Open source SLAM software cartographer, the more complex, better-performing scan matching and UKF algorithm is used relative to SLAM for Dummies, where the cartographer algorithm used in UKF is briefly described. (i) filter parameter settingconstexpr static Floattype Kalpha = 1e-3;constexpr static Floattype Kkappa = 0.;constexpr static Floattype
Learning to use open-source software such as Drupal, Trac, and Redmind, the most troublesome thing is installation and configuration. Due to system differences, it takes too much effort to install and configure at the beginning of learning, and the three minutes after the installation will not be popular. How can this problem be solved? I found that the best way
Demand:Through the open source software FLUENTD collects Apache access logs from each device to the FLUENTD forwarding server, which is then written to the HDFs file system via the Webhdfs interface.Software Release Notes:Hadoop version: 1.1.2FLUENTD version: 1.1.21Test Environment Description:Apache is installed on the NODE29 server, as well as Fluentd, as a FLU
Code for the image processing and search column and open source software
Although the main part of the code has been posted in the previous blog series "Image Processing and search", some people often ask me for code, so I can directly open the source code, hosting code on
Objective
Microsoft Azure is the only solution to Microsoft's public cloud. With this platform, users can deploy and publish their applications in a variety of ways. This is an open platform, in addition to Windows Server and SQL Server support, Microsoft Azure also supports a large number of mainstream open source software
We need a knowledge base and file sharing software that can be deployed on LAN to meet the data accumulation and sharing in daily production process.
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We need a knowledge base and file sharing software that can be deployed on LAN to meet the data accumulation and sharing in daily production process.
In fact, PHP wiki system, blog system, Forum can be, in addition to the article, you ca
Generally, the first step for compiling open-source software is to run./configure. Determine whether the commands or libraries required for compiling the software can be found in the system, and then run./make to compile the software.
However, running./configure sometimes r
JavaThe open-source software has tens of millions. It is like a river and lake. A powerful and experienced team has formed a gang. After constant competition and elimination, the six major gangs have stood out.
-Apache Software Foundation
Start learning JavaApacheJakartaSub-projects are still weak, ApacheApache httpd
, features and features as follows:1) With connection pooling function.2) replication can be performed between multiple PG servers.3) Load balancing can be performed across multiple PG servers.4) Limit the connection exceeding the limit.5) Parallel query between multiple PG servers.6) For multi-process architecture, including: PCP process, pgpool-ii parent process, pgpool-ii child process, worker process.6, POSTGRES-XCThe real data-level split distributed database based on PG library features an
Starting from open-source software-general Linux technology-Linux technology and application information, the following is a detailed description. Ubantu Linux has been installed for the past two days. In fact, many unknown operating systems are playing unknown roles, but they are easy to use, such as Ubantu Linux, in fact, I just used it and I don't know much ab
First, install the ScrapyImporting GPG keyssudo apt-key adv--keyserver hkp://keyserver.ubuntu.com:80--recv 627220E7Add a software sourceEcho ' Deb Http://archive.scrapy.org/ubuntu scrapy main ' | sudo tee/etc/apt/sources.list.d/scrapy.listUpdate the package list and install Scrapysudo apt-get update sudo apt-get install scrapy-0.22Ii. Composition of ScrapyThree, fast start scrapyAfter you run scrapy, you only need to rewrite a download.Here is someon
The golden ratio is the universal law of nature, so this law can also be applied to the prediction of stock price rebound or fall. A stock has been down for a while, starting to bounce back. So where does the rebound come to an abrupt halt? Usually the fall depth and bounce height are in accordance with the Golden ratio: 0.382,0.5,0.618,0.809 and so on.Manual calculation is too cumbersome to write a small software to calculate the corresponding bounce
to create a forum. This method only obtains a forum factory with an administrator authorization token, and then callscreateForum()Method. When a user creates a new topic community, this method can be used to create a new community forum.
Listing 8: creating a forum at any time
public Forum createForum(String name, String description) { ForumFactory forumFactory = null; Forum newForum = null; try { if( description == null ) description = "";
Revolution computing can be said to be the RedHat in the statistical software field. They provide commercial services and support for open-source data analysis software R. Recently, they received a total of $9 million in venture capital investments from North Bridge Venture Partners and Intel capital, and appointed Nor
1. open-source version control system subversion 1.3 officially released: The Subversion development team recently announced the official release of subversion 1.3. As a version control system, subversion uses a more advanced branch management system than the most common cross-region Scripting (RCS). Its design goal is to replace CVs. : Http://freshmeat.net/projects/subversion? Branch_id = 13515 release_id
constantly try to encourage yourself and tempt yourself. Because even say the flowers, learning is always the most boring thing in the world-the more you know, the more you know your ignorance, the more people will be nameless panic, thereby denying themselves.V. SummarySo that's the plan. In writing this article, I was just going to make this attempt. This is what I have mentioned in the article: to constantly encourage themselves, through sharing and other ways. I wish you all a pleasant stud
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