[toc] 1. Problem We wrote a shell script to uninstall Cloudera Manager(CM) that run in a cluster with 3 linux server. After run the script, we reinstalled the CM normally. But when we established Hdfs encountered a problem: failed to format NameNode.…

1. Problem We wrote a shell script to uninstall Cloudera Manager(CM) that run in a cluster with 3 linux server. After run the script, we reinstalled the CM normally. But when we established Hdfs encountered a problem: failed to format NameNode. Canno…

问题导读:1.Cloudera Manager在线安装你认为有什么优点和缺点?2.Cloudera Manager安装过程中遇到,你认为该如何解决?3.在线安装addr.arpa domain name pointer localhost出现这个问题该如何解决? > /proc/sys/vm/swappiness 1.查看你的系统里面的swappiness$ cat /proc/sys/vm/swappiness不出意外的话,你应该看到是 602.修改swappiness值为10$ sudo s…

Cloudera recently announced formal support for Apache Kafka. This simple use case illustrates how to make web log analysis, powered in part by Kafka, one of your first steps in a pervasive analytics journey. If you are not looking at your company’s o…

关于CDH和Cloudera Manager CDH (Cloudera's Distribution, including Apache Hadoop),是Hadoop众多分支中的一种,由Cloudera维护,基于稳定版本的Apache Hadoop构建,并集成了很多补丁,可直接用于生产环境. Cloudera Manager则是为了便于在集群中进行Hadoop等大数据处理相关的服务安装和监控管理的组件,对集群中主机.Hadoop.Hive.Spark等服务的安装配置管理做了极大简化. 系统环…

题目链接: 题目 Add All Time Limit:3000MS Memory Limit:0KB 问题描述 Yup!! The problem name reflects your task; just add a set of numbers. But you may feel yourselves condescended, to write a C/C++ program just to add a set of numbers. Such a problem will simply…

想用 CDH 大礼包,于是先在 Mac 上和 Centos7.4 上分别搞个了单机的测试用.其实操作的流和使用到的命令差不多就一并说了: 首先前往官方下载包: https://www.cloudera.com/downloads/quickstart_vms/5-13.html 如果使用 mac 并且安装 docker. 我们可以很轻松的使用 kitematic 来获取最新版本的 cloudera docker 镜像.只需要搜 cloudera/quickstar 即可这是地址: https:/…

今天早上来公司发现cloudera manager出现了hdfs的警告,如下图: 解决的思路是: 1.首先解决简单的问题,查看警告提示的设置的阀值时多少,这样就可以快速定位到问题在哪了,果然JournalNode Sync Status提示最先消去: 2.然后解决Sync Status问题,首先找到提示语的解释,在官网上可见.然后查看配置参数有无问题,没问题就看log,果然在log中看到了报错信息: 3.最后可定位到该提示是由于JournalNode节点间同步文件没有保持一致,那么使用修复(优雅…

问题导读:1.Cloudera Manager5如何使用cloudera-manager-installer.bin安装?2.Cloudera Manager5安装被中断该如何继续安装?还是重新安装?3.安装过程cloudera server与agent不能通信该如何解决?4.Cloudera Manager5安装是否有要求?5.安装服务的过程中,遇到错误,该如何解决?Cloudera Manager5安装遇到很多的问题,本来Cloudera Manager是为了简化部署,但是由于条件有限,安装…

原文:http://www.codeproject.com/Articles/4135/XZip-and-XUnzip-Add-zip-and-or-unzip-to-your-app-w Download source files - 154.3 KB Introduction I have already introduced XZip in a previous article. This article presents XZip and also XUnzip, which toget…