Ambari: A big pitfall about Ranger ----The port is always 3306
This pitfall was discovered when I set up the ambari environment. I did not find the cause. I asked my colleagues for help, followed the clues and testing step by step, and finally solved the problem. However, I also revealed it.Ambari's pitfalls!!!!
When installing ranger in ambari, you need to connect to the database. I chose the MySQL databas
ObjectiveWhat Apache Ranger is, it is a centralized management framework for the Hadoop platform that provides comprehensive data security access control and monitoring, Apache top-level projects. No nonsense, in fact this article is not so big on, is a step by step teach you how to import Ranger source to idea, and run debugging its Web module.Import source
Hear Pepper technology has been a long time, but the real concern is in February 2013, " Pepper Figure technology Host Safety Environment System Award public Test", the prize is $50,000! The Ranger safety net also reported the incident:650) this.width=650; "class=" AlignCenter size-full wp-image-12317 "src=" http://youxiablog.qiniudn.com/wp-content/ uploads/2014/07/1.png?imageview2/2/w/550/h/256 "alt=" 1 "width=" 550 "height=" "style=" margin:0px auto
...... Then I came to the rising website to see such a description and found a solution. The problem was solved smoothly.In many cases, the hardware firewall is used as a gateway and does not change the default user name and password. I don't know how to submit the delivery documents during implementation by the manufacturer?In a security attack and defense activity, we used a security gateway with VPN for remote access. During the early stage of the activity, the device was frequently disconne
1. Introduction of VIFM and Ranger
VIFM and Ranger are all graphic file management operations, some of which are "My Computer" above windows.
2. Installation of VIFM and Ranger
Enter the following command at the terminal
sudo apt-get install VIFM
sudo apt-ger install Ranger
3, the general use of VIFM
After the
Install times wrong: Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.7:run (site) on project Hadoop-hdfs:an Ant B Uildexception has occured:input file/usr/local/hadoop-2.6.0-stable/hadoop-2.6.0-src/hadoop-hdfs-project/ Hadoop-hdfs/target/findbugsxml.xml
solve. yarn born out of MapReduce1.0 became a common resource management platform for Hadoop 2.0. due to its geographical location, the industry is optimistic about its future prospects in the field of resource management . Traditional other resource management frameworks such as Mesos, and now the rise of Docker, will have an impact on yarn's future development. How to improve yarn performance, how to integrate with the container technology, how to
Hadoop Foundation----Hadoop Combat (vi)-----HADOOP management Tools---Cloudera Manager---CDH introduction
We have already learned about CDH in the last article, we will install CDH5.8 for the following study. CDH5.8 is now a relatively new version of Hadoop with more than hadoop2.0, and it already contains a number of
Chapter 2 mapreduce IntroductionAn ideal part size is usually the size of an HDFS block. The execution node of the map task and the storage node of the input data are the same node, and the hadoop performance is optimal (Data Locality optimization, avoid data transmission over the network ).
Mapreduce Process summary: reads a row of data from a file, map function processing, Return key-value pairs; the system sorts the map results. If there are multi
Not much to say, directly on the dry goods!GuideInstall Hadoop under winEveryone, do not underestimate win under the installation of Big data components and use played Dubbo and disconf friends, all know that in win under the installation of zookeeper is often the Disconf learning series of the entire network the most detailed latest stable disconf deployment (based on Windows7 /8/10) (detailed) Disconf Learning series of the full network of the lates
1. Hadoop Java APIThe main programming language for Hadoop is Java, so the Java API is the most basic external programming interface.2. Hadoop streaming1. OverviewIt is a toolkit designed to facilitate the writing of MapReduce programs for non-Java users.Hadoop streaming is a programming tool provided by Hadoop that al
Directory structure
Hadoop cluster (CDH4) practice (0) PrefaceHadoop cluster (CDH4) Practice (1) Hadoop (HDFS) buildHadoop cluster (CDH4) Practice (2) Hbasezookeeper buildHadoop cluster (CDH4) Practice (3) Hive BuildHadoop cluster (CHD4) Practice (4) Oozie build
Hadoop cluster (CDH4) practice (0) Preface
During my time as a beginner of
Wang Jialin's in-depth case-driven practice of cloud computing distributed Big Data hadoop in July 6-7 in Shanghai
Wang Jialin Lecture 4HadoopGraphic and text training course: Build a true practiceHadoopDistributed Cluster EnvironmentHadoopThe specific solution steps are as follows:
Step 1: QueryHadoopTo see the cause of the error;
Step 2: Stop the cluster;
Step 3: Solve the Problem Based on the reasons indicated in the log. We need to clear th
[Hadoop] how to install Hadoop and install hadoop
Hadoop is a distributed system infrastructure that allows users to develop distributed programs without understanding the details of the distributed underlying layer.
Important core of Hadoop: HDFS and MapReduce. HDFS is res
This document describes how to operate a hadoop file system through experiments.
Complete release directory of "cloud computing distributed Big Data hadoop hands-on"
Cloud computing distributed Big Data practical technology hadoop exchange group:312494188Cloud computing practices will be released in the group every day. welcome to join us!
First, let's loo
1 Creating Hadoop user groups and Hadoop users STEP1: Create a Hadoop user group:~$ sudo addgroup Hadoop STEP2: Create a Hadoop User:~$ sudo adduser-ingroup Hadoop hadoopEnter the password when prompted, this is the new
Build a Hadoop Client-that is, access Hadoop from hosts outside the Cluster
Build a Hadoop Client-that is, access Hadoop from hosts outside the Cluster
1. Add host ing (the same as namenode ing ):
Add the last line
[Root @ localhost ~] # Su-root
[Root @ localhost ~] # Vi/etc/hosts127.0.0.1 localhost. localdomain localh
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