pacemaker recall

1, two cenots7.0 server, I was built with a KVM virtual machine.2, parse the hosts file with each other3, turn off iptables and selinux,ssh open4, configure Yum source, install PACEMAKER,COROSYNC,DRBD5, configure DRBD, select Procoto C, copy mode, verify results6, configuration Corosync, CRM-based management VIP,FSSYSTEM,DRBD block device7, verify the result, can fail automatic switch.1,drbdaa eth0 9.111.222.59 eth1 192.168.100.59DRBDBB eth0 9.111.222

First, the preparatory workTo undertake the above: Corosync+pacemaker using CRMSH to build a highly available clusterII. MariaDB Server Configuration (NFS-based)NFS Server Preparation1. Prepare the LVM storage space in Nfsserver [[emailprotected]~]#fdisk/dev/sdbdevicecontains Neitheravaliddospartitiontable,norsun,sgiorosf disklabelBuildinganewDOSdisklabelwithdiskidentifier 0x61284c6a. changeswillremaininmemoryonly,untilyoudecideto Writethem. Afterthat

Tags: host server IP addressLab Environment:Two MARIADB servers 172.16.10.20 172.16.10.21fip:172.16.10.28MARIADB file storage share: 172.16.10.22Experiment Preparation:1, two node host name and corresponding IP address resolution service can work, and the host name of each node needs to be consistent with the results of the "uname-n" commandVim/etc/hosts 172.16.10.20 21.xuphoto.com 20xu 172.16.10.21 22.xuphoto.com 21xu Node1: # sed-i ' [email protected]\ (hostname=\). *@\[email protected] ' # HO

High Availability of servers through HA, that is, high availability cluster of mysql servers through corosync + drbd + pacemaker. Main steps to implement the case application: 1. Preparations: 2. install and configure DRBD. 3. mysq High Availability of servers through HA, that is, high availability cluster of mysql servers through corosync + drbd + pacemaker. Main steps to implement the case application: 1.

Ansible + Corosync + Pacemaker + NFS for http High Availability Directory: (1) experiment environment(2) Preparations(3) Configure basic configurations for node1 and node2(4) deploying nfs using ansible(5) deploying corosync and pacemaker using ansible(6) Use ansible to install the crmsh Tool(7) Use crmsh to configure http High Availability(8) Verification(9) Notes (1) experiment environment1.1 environment

The search algorithm for the Niang, as well as the bidding rankings, I just want to say that I bought a watch last year. One, MySQL replication master configuration Please refer to: MySQL replication master (master-slave) Sync http://www.111cn.net/database/mysql/83904.htm Second, Corosync pacemaker installation configuration Please refer to: Corosync pacemaker Nginx High-availability installation configurat

node2 192.168.3.20.node2Modify/etc/ha. d/ha. cf to add the node to the file, and modify the specific configuration node as needed:Keepalive 2Deadtime 20Inittime 120Udpport 694Bcast eth0 (your broadcast Nic, usually eth0)Auto_failback onNode node1Node node2Modify/etc/ha. d/authkeys to modify the encryption mode:Auth 11 crcModify the/etc/ha. d/authkeys attribute to 600.Modify/etc/ha. d/haresources to add an ip address for automatic drift processing: Node1 Ipaddr: 192.168.3.169/24/eth0 mysql httpd

This article briefly describes how to configure a Fence_vmware_soap type of stonith device (test-only learning) in Rhel 7 pacemaker.Stonith is the abbreviation for Shoot-the-other-node-in-the-head, and it protects the data from corruption due to node anomalies or simultaneous access.A node unresponsive does not mean that it does not have access to data, and if it wants to be sure that the data is secure, it needs to use Stonith to isolate the node to ensure that the data is properly accessed by

1. Preparation before installation High-availability clusters generally need to configure time synchronization, based on host name Mutual communication, SSH mutual trust communication, Corosync Pacemaker only need to configure time synchronization, based on host name to communicate with each other: yuminstallchrony #安装chronyvim /etc/chrony.confserver172.16.0.1iburst #设置为可用的ntp服务器systemctl restartchronyd #启动服务vim /etc/ hosts #将hosts文件分发给每个节点 172.16

managing master-slave DRBD hosts. The main use of drbdadm, because it more in line with the user's habits. Drbdsetup and Drbdmeta are less used as they are closer to the underlying device.DRBD's working features: real-time, transparent, set data synchronization typeThere are three types of data synchronization:A: Asynchronous, good performance, poor reliabilityB: Semi-synchronous performance reliability TradeoffC: Good synchronization reliability, poor performanceResource type for DRBD:Resource

Lab Environment:Virtual Machine 2 installs Corosync+pacemaker, the operating system used is CentOS6.5.Virtual Machine ip:172.16.103.2, 172.16.103.3Experimental steps:Prerequisite Preparation: Two virtual machine time synchronization, can use/etc/hosts file based on host name to communicate.First, install Corosync + pacemaker:# yum Install corosync# yum install pacemakerSecond, install the DRBD package:The D

DBRD can achieve data synchronization, DRBD is generally a master from, all read and write operations, Mount can only be performed on the master node. DRBD Master node can be swapped.The Corosync+pacemaker implementation of the DRBD master-slave point can be automatically switched to the slave node, and the failover continues to provide service.MySQL data can therefore be placed on a DRBD block.DRBD:DRBD: (Distributed replication block device) is a di

First, install the heartbeat.Ha premise: 1, time synchronization; 2, SSH dual-machine mutual trust; 3, host name to be consistent with uname-n, and through/etc/hosts resolution; rpm-ivhepel-release-6-8.noarch.rpm #配置epel的源: yum-yinstallheartbeatcp/usr/share/doc/heartbeat-3.0.4/{ Authkeys,ha.cf,haresources}/etc/ha.d/Three configuration files: 1, key file, 600,/etc/ha.d/authkeys2, heartbeat configuration configuration of the service/etc/ HA.D/HA.CF3, resource management configuration file/etc/ha.

After MySQL migrated to Azure, due to the nature of the cloud, the method of ha in the self-built data center of MySQL could not be deployed much on the cloud.This is mainly because the public cloud currently does not support: 1. shared storage; 2. Multicast;3. Vip. Shared storage, the Azure file service can partially resolve this issue, but given the performance issues, this scenario does not use File service; The main reason for multicast is that the cluster software needs multica

Os:rhel 6.5 64bitcorosync:1.4.7--yum Mode installationpacemaker:1.1.2--Automatic installation as a Corosync dependency packPacemaker is the product of heartbeat development to 3.0 independent, Red Hat 6.0 series, using Yum to install Corosync, the default is to install Pacemaker as CRM.Pacemaker Common Configuration tool: Crmsh PCsCrmsh need to install RPM packages independentlyMain configuration files:/etc/corosync/corosync.conf/etc/crm/crm.confExper

resource management function and cannot form a cluster independently.2, Corosync IntroductionCorosync was originally used only to demonstrate an application of the Openais Cluster Framework interface specification, which can be said to be part of the Openais, but the latter is clearly beyond the official original idea, and more and more vendors are trying to use Corosync as a cluster solution. The RHCs cluster suite, such as Redhat, is based on the Corosync implementation.Corosync only provides

actually eventually starts the service by invoking the service's resource agent.Messaging layer, CRM, RA these three levels are AIS family to achieve the three basic level of cluster function;Summarize:Messaging Layer main role: through the configuration of the interface and address and mode, to complete the heartbeat and transaction information transmission of the cluster;CRM role: For non-ha-aware (can not directly communicate with the message layer) program to provide the middle tier, becaus

Tags: pacemaker corosync pcsExperimental purpose: Using Corosync as the cluster message transaction layer (massage layer), pacemaker as the cluster resource Manager (Cluster Resource Management), PCs as a management interface tool for CRM. Requires the implementation of HTTPD's high-availability features.Environment: CentOS 6.9pacemaker:1.1.15corosync:1.47pcs:0.9.155Preparatory work: Configure SSH

1. Environment IntroductionOS: centos 6.5Kernel: 2.6.32-431.11.2.el6.x86 _ 64Node1: nginxha001 10.0.15.31 MasterNode2: nginxha002 10.0.15.32 SlaveVip: 10.0.15.30Note: drbd is used in this example. For installation of mysql, corosync, and pacemaker programs, see other materials. Both programs must be installed. drbd resources can be copied to the other one after configuration is completed on one platform. Both drbd resources must be created to create d

650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M01/37/C6/wKioL1OvrZKw1D9-AAEDaobD9Aw534.jpg "Title =" 1.jpg" alt = "wKioL1OvrZKw1D9-AAEDaobD9Aw534.jpg"/> Lab platform: Centos 1, 6.4 Functions: Use corosync + pacemaker + drbd to achieve high availability of the lamp platform, and install the discuz forum for testing. Tutorial steps: 1, Synchronize the hosts files of both parties and add the parsing of node6 and node7 10.32.9.56 node6 10.3