One. Theory
・HA is highly available and has been It is called hot standby.
・High availability principle: Two machines A and B. Normally, A provides services and B is idle. When A is down or the service is down, switch to B Continue to provide services and use heartbeat for communication and elections
Table of Contents
Heartbeat 3.x application strategy: concept composition and Working principle… 1
First, the concept of Heartbeat Composition and working principle… 1
1. The
1. Introduction of Heartbeat:
The Heartbeat project is a component of the Linux-HA project and the most successful example of the current open source HA project. The full name of Linux-HA is
heartbeat v1
I. Introduction to the experimental environment
Hardware: lenovo T410S
Software: VMWARE workstation
SO: Centos 6.6
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Second, network topology
heartbeat+DRBD+mysql+haproxy
heartbeat+DRBD+mysql mainly realizes the single point of failure of mysql master
haproxy implements load balancing from mysql
Specific architecture di
I. Introduction to the experimental environment
Hardware: lenovo T410S
Software: VMWARE workstation
SO: Centos 6.6
Second, the purpose of the experiment
Realize the hi
Configuration premise:
1. Time must be synchronized, It is recommended to use ntp protocol
2.Required between nodes To communicate with each other through the host name;The name used in
1. Environment
System: CentOS 6.4×64 Minimal Installation
node1: 192.168.1.13
node2: 192.168 .1.14
vip: 192.168.1.15
Second, basic configuration
The operation of
My CouchDB (production) server is sometimes shut down, and I don’t want to do it. While checking the logs, I noticed that Erlang/CouchDB (one or the other) sends heartbeats, And monitor the heartbe
In the previous blog http://blog.csdn.net/happy_life123/article/details/46401663, we talked about using haresource to configure virtual IP, but At present, most people use crm for resource manageme
