Junzheng darwin Source Synchronization Tutorial

Environment: Ubuntu 18.04 1. Acquire license certification Get the document from darwin source, use "Alt+Ctrl+T" to open the command window, enter $ssh-keygen All the way back, back, back You can see that the generated id_rsa file, at / home/wangcen/.ssh/id_rsa location (different computer ...

Added by mridang_agarwal on Fri, 12 Jun 2020 04:25:17 +0300

Cloud Server ssh key management and github configuration

A word programmers often say is: Programming for github.Without github, programmers can see how important it is to them. The tool that works with github is git, in the previous chapter git installation and basic configuration on cloud servers There is also a basic introduction to it on the server.Although git can work on both ssh and https pro ...

Added by dev99 on Thu, 28 May 2020 05:35:54 +0300

Rendering host file written by ansible role

The hosts file is usually used when deploying a distributed cluster. We usually write in the ip address and host name. How to implement rendering when writing Ansible?Define the roles first [root@ansible kubeadm-high-install]# ls ansible.cfg group_vars hosts roles site-all.yml The first file takes the default etc/ansible cfg file and remov ...

Added by dutcbhboy83 on Wed, 27 May 2020 18:20:53 +0300

How to deal with the problem that the cloud server cannot access the database remotely after it is installed

Today, my colleague said that a new cloud server is installed, and it is normal to log in Using ssh, but the above service port of Dayun database cannot be accessed. Using netstat ANP to view the port is normal to listen, and the listening address is also allowed to be accessed by any ip And the firewall and iptables are both closed I was also ...

Added by Maskeeper on Sun, 24 May 2020 15:00:06 +0300

Tungsten Fabric Starter's book about cluster updates

Tungsten Fabric Starter Series articles, which are compiled and presented by the TF Chinese community, are from the hands-on experience of technology bulls. They are designed to help novices gain a better understanding of the whole process of TF operation, installation, integration, debugging, etc.If you have relevant experience or quest ...

Added by anand on Sat, 23 May 2020 10:25:19 +0300

K8S Deployment Rancher 2.X Version

Introduction to Rancher Rancher is a container management platform that helps organizations deploy and manage containers quickly and easily in a production environment.Rancher can easily manage Kubernetes in a variety of environments, meet IT needs, and support the DevOps team.Kubernetes has not only become a container organization standard, ...

Added by dkphp2 on Tue, 12 May 2020 07:11:26 +0300

HDFS - operation and maintenance

1, Add node Operating system configuration: ① host name, network, firewall, ssh configuration ssh-keygen -t rsa At the same time, the auth*-keys file of ssh of any node in the cluster can be distributed to the latest node Add the domain name mapping of this node in the / etc/hosts file of all nodes Copy the configuration file of namenode to ...

Added by Rayman3.tk on Wed, 06 May 2020 02:22:05 +0300

Gausdb t distributed cluster deployment and upgrade Guide

In this paper, we use four nodes to deploy the gausdb t 1.0.1 distributed cluster, and then upgrade it to version 1.0.2 after the deployment is completed (install version 1.0.2 directly, during the installation process, segment fault will be reported, which has not been resolved yet). Refer to the previous articles for the preparation of the o ...

Added by Michael on Tue, 07 Apr 2020 14:16:59 +0300

hadoop 8-day course -- the fifth day, the HA mechanism of hadoop

The mechanism of hadoop is only available in hadoop 2.x. the implementation of this function depends on a distributed component: zookeeper. Brief introduction to zookeeper zookeeper mainly provides distributed coordination services. Main functions: 1. Provide storage and management of a small amount of data. 2. Provide monitoring function for d ...

Added by THEMADGEEK on Mon, 06 Apr 2020 12:21:44 +0300

df Command & du command

df command View the total capacity, used capacity, remaining capacity, etc. of the attached disk, without any parameters, which is displayed by K by default. [root@centos-01 ~]# df //file system 1K-block Already used Available used% Mount point /dev/sda3 29140072 1040404 28099668 4% / devtmpfs ...

Added by newbiez on Sat, 04 Apr 2020 00:39:09 +0300