Programmer Group

Chapter 1 Introduction to Keepalived Keepalived software was originally designed for LVS load balancing software to manage and monitor the status of each service node in the LVS cluster system. Later, it added VRRP function to realize high availability. Therefore, besides managing LVS software, Keepalived can also be used as a highly availabl ...

1. CentOS 7 Install TigerVNC Server 2. Install TigerVNC Server 3. Configure VNC Service 4. Modify the firewall 5. Set the VNC password 1. CentOS 7 Install TigerVNC Server This paper describes how to install VNC Server on CentOS 7 for remote access.This article refers to DigitalOcean The tutorial includes some installation experience. 2 ...

I. Preparations 1. Download and install vmware, the steps are omitted. 2. Download the ios package for the CentOS system: http://isoredirect.centos.org/centos/7/isos/x86_64/CentOS-7-x86_64-Everything-1611.iso 3. Download and install Xshell 5, step omitted. 4. Download and install git, step omitted. 5.zookeeper official website: http://zookeeper ...

When I was again toyed with various outbound and inbound rules, and after the search engine helped me out of the mud, I decided to write down this experience. 1. Deployment of FTP Server 1.1 Installation of vsftpd _The author uses Aliyun's ECS server (this is not an advertisement, but a reminder: P), the operating system is CentOS7. F ...

Chapter 1 keepalived service description 1.1 What is keeping alived? Keepalived software was originally designed for LVS load balancing software to manage and monitor the status of each service node in the LVS cluster system. Later, it added VRRP function to realize high availability. Therefore, besides managing LVS software, Keepalived can a ...

When we deploy ceph, we mostly need to close the firewall. What happens if we don't close the firewall? Previously, a CEPH cluster was deployed remotely to the company, and openshift was deployed on three nodes. There are many problems when deploying ceph. The most painful thing is that osd is hung up, but the health check shows err, osd 0 in ...

Step 1: Get the mysql yum source Get the download address of RPM packages from mysql https://dev.mysql.com/downloads/repo/yum/ Click Download and right-click to get the download link https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm Of course, rpm can also be downloaded directly to the local. [root@hal ...

10.12 firewalld and netfilter selinux temporarily closed [root@arslinux-01 ~]# setenforce 0 [root@arslinux-01 ~]# getenforce Permissive selinux permanently closed [root@arslinux-01 ~]# vi /etc/selinux/config permissive doesn't block, it reminds, it doesn't show, it just records information. · CentOS 7 used netfilter firewalls before ...

Recently, the project responsible for preparing large data platform storage mainly around the Hadoop platform. Although we plan to use the cdh version of hadoop, we will use the original Hadoop for development convenience before preparing a better environment for expansion. Environmental preparation The three server system environm ...

RxRouter Github address A Lightweight, Simple, Intelligent and Powerful Android Routing Library Getting started Add dependency Add the following dependencies to the build.gradle file: dependencies { implementation 'zlc.season:rxrouter:x.y.z' annotationProcessor 'zlc.season:rxrouter-compiler:x.y.z' } (Replace the x, y and z ...