veeam high availability

High Availability is divided into three layers: 1. Implementation of the underlying information layer:HeartbeatCorosyncCman2. Resource Management, implementation method:Heartbeat-V1: haresourceHeartbeat-V2: crmHeartbeat-V3: pacemakerRHCS: rgmanagerNote: Resource Manager pacemaker can be used in combination with all underlying communication implementation methods.3. Resource proxy layer, implementation metho

hangs off, and does not affect the otherNameNode。 ANameNodeThe namespace and its corresponding block pool are called namespace volume. It is the basic unit of management. When aANameNode/nodespace was removed after all itsDataNodeThe corresponding block pool will also be deleted. Each namespace volume is upgraded as a base unit when the cluster is upgraded.HDFS High AvailabilityThrough jointuse inBacking up Namenode metadata in multiple file systems

Typically, enterprise-class applications use more expensive hardware and software devices to improve system availability.such as IBM's minicomputer and even midsize machine mainframe and proprietary operating system, Oracle database, EMC storage devices and so on.Internet companies are increasingly using PC-class servers, open-source databases, and operating systems, and these inexpensive devices reduce availability while saving costs.In particular, t

High Availability of MySQL-keepalivd + mutual master and slave, mysqlkeepalivdObjective: to configure a keepalived Hot Standby architecture and master-slave ReplicationPlanning:Master1 zlm177 192.168.17.177Master2 zlm188 192.168.17.188Vip 192.168.17.166Environment: Red Hat Enterprise Linux 6.4Percona Server 5.6.15 I. Software Installation Go to the official website: Keepalived-1.2.13.tar Cp keepalived-1.2

This article will cover another high-availability implementation of MySQL, namely MHA (Masterhigh avaliable). Master HA. is an open source high-availability program that provides MySQL's master-slave architecture with the ability to automatically recover from failures. I. Introduction of BASIC knowledge 1. MHA definit

Mysql high-availability architecture solution II (keepalived + lvs + read/write splitting + Server Load balancer)Mysql master-slave replication and lvs + keepalived for high load availabilityDirectory1. Preface 42. Principle 42.1 Overview 42.2 Working Principle 42.3. Actual purpose 43 solution 43.1. Environment 43.2 architecture 53.3 Design Principle 64. Install

Redis High-availability architecture best Practices First, preface May 13, 2017, the application performance Management auditorium Guangzhou station successfully ended, among them from 37 Mutual entertainment DBA Wen in the venue and you have a wonderful Redis technology sharing. Redis is an open source API that is written in ANSI C, supports the web, can be persisted in memory, key-value databases, and

Create DagConfigure the Database Availability GroupSelect the database Availability group, click the plus sign to create the database availability Group;650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/83/E4/wKioL1d_RSbysHqmAABWN7lOIJA378.jpg "/>Enter the database availability group name, witness server, and

, the 11.2.0.1 RAC that is installed on the virtual machine is chosen 11.2.0.1 because of problems with public IP and private network segments. During the installation instance, the computer crashes and restarts, and CRS fails to start. [Root@rac1 bin]#./crsctlstart CRS Crs-4124:oracle highavailability Services startup failed. Crs-4000:command startfailed, or completed with errors. [Root@rac1 bin]# Ps-ef|grep has Root 8081 1 0 03:14? 00:00:00/u01/app/grid/11.2.0/bin/ohasd.bin reboot Root 8137

Label:MMM (master-master Replication Manager for MySQL) MySQL Master Replication Manager provides a scalable suite of scripts for monitoring, failover, and management of MySQL master replication configuration. In the MMM high-availability solution, the typical application is a dual-master multi-Slave architecture, through the MySQL replication technology can realize two server mutual primary from, and at an

The previous article written the Nginx load balancer, this article realizes the high Availability (HA). The overall design of the system is to use Nginx to do load balancing, if there is an nginx single-machine failure, the whole system will not function properly. For the high-availability requirements of system archit

High Availability of spring cloud config distributed configuration center, springcloud In the previous article, we implemented the unified management of configuration files, but we can find that we only use one server. If this server fails, the entire configuration center will be unavailable. Next, we will solve the high avai