pacemaker xray

Lab Environment: Two hosts: centos6.5+httpd2.4+php5.5 the basic environment that makes up the web, and the Web page is accessed properly, and ensures that the HTTPD24 service does not boot up. Node1.mylinux.com 10.204.80.79 Node2.mylinux.com 10.204.80.80 I am here to enable ansible to facilitate the management of two nodes, enable a host as a management node, ip:10.204.80.71, in the hosts of the three hosts to add the corresponding name resolution, management node to node1,node2 two nodes enable

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

Pacemaker, is a cluster resource manager. It enables node and resource level failure detection and recovery of the maximum Availability Cluster service (also known as resource management) using the messaging and membership capabilities provided by your preferred cluster infrastructure (Openais or Heaerbeat).It can do clusters of any size and comes with a robust dependency model that enables administrators to accurately express the relationships betwee

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

Corosync and pacemaker implement httpd and mysql dual ClustersI. Environment Introduction: Three are dual NIC: openstack-control.example.com openstack-control eth0: 172.16.171.100 eth1: 10.1.1.100 openstack-nova.example.com openstack-nova eth0: 172.16.171.110 eth1: Drawing openstack-neutron eth0: 172.16.171.120 eth1: 10.1.1.120 II. The configuration steps of corosync and pacemaker are as follows: 1. Configu

Lab environment: Install: Yum install corosync pacemaker-y Copy the configuration file CP corosync. conf. Example corosync. conf Vim corosync. conf Edit the configuration file: Compatibility: whitetankCompatible with corosync 0.8Totem {Defines the heartbeat information transfer layer between clustersVersion: 2 ---- versionSecauth: On --- whether to enable Security AuthenticationThreads: 0 --- How many threads are enabled to process heartbeat inf

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

This article is from DBAnotes. Original article title: DRBD and Pacemaker If someone asks you if a PC server can reach 99.99% high availability, what should you do? Maybe no machine can "Make sure" to achieve this availability. Of course, there may be no problems in a certain period of time, but it must be luck, however, high availability is basically impossible to achieve the goal through one machine. More often, we design solutions to ensure that t

Corosync and pacemaker implementation of the high availability of the difficulties in the CRM command, subcommand, more parameters, and so on, the following some common examples.One, CRM has two kinds of working methods 1, batch mode, which is to enter commands directly on the shell command line2, interactive mode (CRM (live) #) enters into Crmsh for interactive execution Second, the order detailed 1, First ORDER subcommand The code is

One: Experimental environment Node OS Ip Drbd_ip DRBD with HDD Vip Web1 centos5.10 192.168.10.11 172.16.1.1 /dev/sdb 192.168.10.100 Web2 centos5.10 192.168.10.12 172.16.1.2 /dev/sdb 1. Where the two-node IP address is set as above: 2. Two nodes have been configured with mutual SSH trust and have done time synchronization Two: Install related software (both nodes 1 and 2 are installed) 1. Insta

Tags: corosync pacemakerFirst, the environment introduction:Three are dual network cards:Openstack-control.example.com Openstack-controleth0:172.16.171.100eth1:10.1.1.100Openstack-nova.example.com Openstack-novaeth0:172.16.171.110eth1:10.1.1.110Openstack-neutron.example.com Openstack-neutroneth0:172.16.171.120eth1:10.1.1.120Second, Corosync and pacemaker configuration steps are as follows:1. Configure time zones and sync times2. Configure the cluster