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CentOS Build TFS Nameserver HA

backgroundTFSRequirements forGCC 4.1.2compile, two scenarios1is to useCentos5 (comes withgcc 4.1.2), 2UseCENTOS6putGCCreduced to4.1.2. I'm using the first method to successfully run TFS as aHAwhen the question came, the official request was to useHeartbeat 3.x,centos5is a2.x. Start selecting thecentos5under CompileHeartbeat 3successful, but also requires compilingPacemaker, compile the time encountered some problems, may be version matching, dependency is not congruent, even if compiled by consi

HA cluster configuration

First, what is HA cluster?ha (high available) is highly available, also known as dual-machine hot standby, for critical business, the simple understanding is that there are two machines A and B, the normal service is a machine, B machine standby, when a machine stop service, Will switch to the B machine to continue to provide services. Commonly used open source software with high availability is heartbeat a

How to prevent the brain fissure _php of HA cluster tutorial

How to prevent brain fissure in ha cluster 1. IntroductionBrain fissure (split-brain), refers to a highly available (HA) system, when the contact of the two nodes disconnected, originally a whole system, divided into two independent nodes, then two nodes began to scramble for shared resources, resulting in system confusion, data corruption. For a stateless service ha

Linux HA installation and configuration example

In linux, the HA installation configuration example first installs HA (yast-I heartbeat) server1: 192.168.1.100server2: 192.168.1.101 on the two servers respectively. edit/etc/ha. d/authkeysTxt code auth 3 #1 crc #2 sha1 HI! 3. md5 ciaoskey edit/etc/ha. d/ha. cfTxt code logf

configuring VMware HA Problems and how to resolve them

look at the status of each host in a virtualized environment today, and in the process of viewing, you'll see that almost every host has a warning:vSphere ha Heartbeat data storage number is 1, less than required: 2This problem Baidu saw a lot of blog post reprint is a warning to close the practice, I feel a little bit, first of all, this question is nothing to us understand only said the practice, then encounter such problems in the future, we can on

Linux HA Cluster High-availability cluster HEARTBEAT2

First, elaborated the Linux HA cluster use background;1.1 High-availability cluster definitions:Highly available cluster full name: High Availability Cluster, simply put, the cluster is a set of highly scalable, high-availability, cost-effective computers. They provide the user with a set of network resources as a whole. One of the individual computer systems is a cluster node. The main function of high-availability cluster software is to automate fau

Drdb + heartbeat + nfs for Linux high-availability cluster (HA)

If the primary server goes down, the loss is immeasurable. To ensure uninterrupted services on the master server, you need to implement redundancy on the server. Among the numerous solutions for implementing server redundancy, heartbeat provides us with a cheap and scalable high-availability cluster solution. We use heartbeat + drbd to create a high availability (HA) cluster service in Linux. if the master server goes down, the loss is immeasurable. T

In addition to VMware HA virtual machines, there are other security options

System Administrators using the complete vSphere solution use VMware HA to ensure the continuous running of virtual machines. However, if you are using the free version of ESXi, you will not be able to use the VMware HA feature. There are other options to protect your virtual machines by achieving high availability and ensure they are running properly. Before considering other options, let's look at what VM

RHCS + GFS (Red Hat HA + GFS)

1. environment Introduction ha management end: luci: 192.168.122.1ha node ricci: 192.168.122.34192.168.122.33 use iscsi shared disk co-ha node on iis82 to create GFS file system 2. iscsi disk sharing server: LVM is used for sharing to facilitate later expansion. [root @ 12782 ~] # Fdisk-cu/dev/sda 1. Environment Introduction Ha management end: luci: 192.168.122.1

Juniper SSG 550m HA Configuration

Here the ETHERNET0/3 is the HA interfaceCLI Command line configurationSsg-550m-1 (M)Set NSRP Cluster ID 1Set NSRP rto-mirror SyncSet NSRP rto-mirror routeSet NSRP Vsd-group ID 0 Priority 50 (configuration Vsd-group ID 0 precedence)Set NSRP Vsd-group master-always-exist (configuration always has one device as master)Set NSRP Monitor Interface ethernet0/0Set NSRP Monitor Interface ETHERNET0/1Set NSRP Monitor Interface ETHERNET0/2SaveSsg-550m-2 (B)Set NS

Install and configure Rose ha

Install and configure Rose ha 1.1.1 install Rose ha Copy three installation files of roseha to/data/install to facilitate installation of the two hosts. Before installing Rose HA, modify the hosts file and enter the corresponding host name and IP address. The modification method is the same as that of the Windows Hosts file, we can enter the host name. Modificati

Chd4b1 (hadoop-0.23) for namenode ha installation Configuration

Chd4b1 (hadoop-0.23) for namenode ha installation Configuration Cloudera chd4b1 version already contains namenode ha, the Community also put namenode ha branch HDFS-1623 merge to trunk version, can achieve hot backup of dual namenode, but currently only supports manual switch, does not support automatic switch, switch progress in the community see: https://issues

HA Configuration of Linux architectures

Brief introductionBy installing the Linux-ha software, we can realize the high availability solution of the Linux dual-machine system, realize the hot backup of the dual-machine system, and be able to switch seamlessly between the two machines, thus externalProvide stable and reliable service, and finally realize the System High performance RAS (reliability, availability, and serviceability). Experimental environment650) this.width=650; "Src=" H

Hadoop2 ha Introduction

This article describes the principles of the HA mechanism and the Hadoop2 ha configuration process.————————————————————————————————————————————————————————————————————the principle of HA mechanismThere are two namenode:active NameNode and standby NameNode in Ha. Where active NN is the primary node, and standby nn as th

FW built for high availability of OpenStack (Ha,high availability)

balance between. More discussion of system performance and architecture is also being carried out around consistency and availability.2) engineering practices for OpenStack, Swift and CapIn contrast to cap theory, OpenStack's distributed object storage System, swift, satisfies availability and partition tolerance, without guaranteeing consistency (optional), but achieving eventual consistency. Swift if the get operation does not include the ' x-newest ' header in the request header, then this r

HA cluster basic concepts and implementation of highly available clusters

HA cluster high-availability clusters are divided into the following steps:Dot I-->ha cluster basic conceptDot I-->heartbeat implement haDot I-->corosync detailedDot I-->pacemaker detailedDot I-->drbd detailedDot Me--heartbeat resource management based on CRMDot Me--corosync+pacemaker+drbd+mysql to implement a highly available (HA) MySQL clusterDot Me--heartbeat+

HDFS Federation and namenode ha

1. Background of HDFS Federation In hadoop 1.0, the single namenode Design of HDFS brings about many problems, including single point of failure (spof), memory restriction, and cluster scalability and lack of isolation mechanisms (different businesses use the same namenode to affect each other) to solve these problems, hadoop 2.0 introduces the HA solution and HDFS Federation based on shared storage, which focuses on HDFS Federation. HDFS Federation m

Linux ha Cluster

The main purpose of HA (high availability, highly available) clusters is to increase the online rate of service, that is, to shorten the average The time of the failure. In fact, when a service node is not in the line, another node that provides the same service can continue to provide services to avoid a single point of failure. HA cluster related concepts One, the related noun explanation 1, the online r

Summary of AIX ha switch script issues

(1) The use of the HA switch script, stop the database script and start data script at the end of the need to add the statement "Exit 0" (ha switch when the HA script will check the switch script, ha switch script return value of not 0 will be an error.) Ha switchover failed

MySQL's official HA middleware

MySQL's official HA middlewareHttp://www.mysql.com/products/enterprise/fabric.htmlMySQL Fabric is a extensible framework for managing farms of MySQL Servers. The features has been Implemented-high availability (HA) and scaling out using data sharding. These features can be used in isolation or in combination.Webinar:mysql fabric-high availability automated sharding?Both features is implemented in both laye

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