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1.kerberos installation kerberos installation configuration and use: https://blog.csdn.net/qq_21383435/article/details/83625252 2. Generate keytab Execute the following command on cdh1 node, KDC server node: cd /var/kerberos/krb5kdc/ kadmin.local -q "addprinc -randkey hive/cdh-server1@YONG.COM " kadmin.local -q "addprinc - ...

[Hadoop cluster building] ssh password free login setting There are three hosts, their IP addresses and roles in the cluster are as follows: 172.17.0.2 //master 172.17.0.3 //slave1 172.17.0.4 //slave2 Now you want to make the two of them able to log in through ssh, the steps are as follows: Create public key and configure acc ...

Article directory Cluster SSH password free login settings Hadoop installation configuration Open port To configure Format HDFS (Master, Slave) Start Hadoop Verify installation succeeded In the previous article, we have discussed how to write hadoop under virtual machine. On this basis, due to the particularity of cloud ...

paramiko Paramiko is a module for remote control that allows command or file operations on remote servers. It is worth noting that remote management within fabric s and ansible is achieved using paramiko. install pip install paramiko Module usage Execute Command - User Name + Password #!/usr/bin/env python #coding:utf-8 import paramiko # Cre ...

background How to own your own blog without spending money (server, domain name)? gitpage+hexo, realize your wish Preparation Install git client by yourself Self registration of git account Install npm and node.js by yourself Operation steps Building database Create a new one named( Your user name.github.io )For exampl ...

Upgrade package management system First, use the following command to upgrade the package management system: sudo apt-get update && sudo apt-get upgrade Create users and configure account permissions For the sake of server security, we should avoid using the root user to log in directly; instead, we should create a new user and use this ...

Hadoop 2.x.y (pseudo distributed) Refer to the single node setup section of the corresponding version of the official websitehttps://hadoop.apache.org/docs/ First, ssh and rsync Then download the bin package and extract it. Add the extracted root directory as the environment variable Hadoop? Home # example export HADOOP_HOME=/home/yzj/Applicat ...

The previous article introduced Hadoop distributed configuration , but designed to be highly available, this time use zookeeper to configure Hadoop highly available. 1. Environmental preparation 1) modify IP 2) modify the mapping of host name and host name and IP address 3) turn off the firewall 4) ssh password free login 5) create hado ...

Preface: The biggest difference between distributed and centralized is that developers can submit code locally, and each developer clones a complete git repository on the local machine. The following is a classic git development process: The git features are as follows: Clone a complete git repository (including code and version informatio ...

My qq 2038373094 Components used The function of this component 1. Copy the pictures uploaded by users to Qianniu cloud server 2. Then Qianniu cloud returns a picture link blob:http://localhost:8088/42786950-1ef1-44a3-8315-f3f7d83ed9fc What we want to achieve now is to send the pictures uploaded by users to the local ...