pacemaker xray

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

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the system to find out the inconsistency or conflict between the software and the definition of the system. Differences: First, their test methods are different: Unit testing is a white box test; Integration testing is a gray-box test; System testing is a black box testing. Second, they have different scope of study, that is, their testing focuses are different: Unit testing mainly tests the data structure, logic control, and exception handling within a unit; The integration test mainly tes

1 Start the Docker service, which causes the running Docker to error if the Docker service stops, without switching2 Prepare the same image file on each node3 pcs resource Create My-docker1 docker image= "Index.alauda.cn/library/tomcat:9" name= "My-docker" run_opts= "-P 8,888:8,080 "4 Setting up PCs constraint colocation add my-docker1 VIP1 INFINITYThis article is from the "old section of the Cultivation of Life" blog, please be sure to keep this source http://031028.blog.51cto.com/9866455/18370

Operation thinking: Through the DRBD to achieve data synchronization, through the Corosync+pacemaker (hereinafter referred to as CP) to detect failures and transfer, only one of the normal state of work, the other only to detect and synchronize data, when there is a failure, Server2 automatically take over all business, and synchronizing the data to another (of course, it doesn't have to sync successfully at this point ...). This is illustrated below:

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

one of the platforms:1. Set into primary:DRBDADM----Overwrite-data-of-peer primary drbdweb2. Format and MountMkfs.ext4/dev/drbd0Mkdir/drbdMount/dev/drbd0/drbd3. Create a file, uninstall it, and set it to secondaryTouch/drbd/somethingUmount/drbdDrbdadm Secondary DrbdwebUpgrade to primary on another platform to mount and see if there are any files that you just created:DRBDADM Primary DrbdwebDrbd-overviewMkdir/drbdMount/dev/drbd0/drbdLs/drbdAt this point, the DRBD experiment has been completed.He

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

Tags: haproxy mariadb pacemaker CorosyncThe highly available solution keepalived just provides the simplest high-availability features, and the truly advanced features keepalived difficult to complete. Openais specifications provide a complete solution, but a lot of the weight of many features considered comprehensive, very detailed, to understand these we can be more in-depth understanding of the complete system of high availability, when encounterin

: Drbdadm----Overwrite-data-of-peer primary MySQL, making this VM a primary for the DRBD group. When you view the status of DRBD by Drbd-overview, you can see that two disks are synchronizing at this time:0:mysql/0 syncsource primary/secondary uptodate/inconsistent C r-----???? [A]. ..... ......... Sync ' ed:0.6% (20372/20476) MThe format is now on the master node: mkfs.ext4/dev/drbd0?At this point, the DRBD installation configuration is complete. At this point, you can only mount this DRBD disk

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.

find the source RPM package, you can leave a message for me. RPM-IVH epel-release-6-5.noarch.rpm #安装 163 Source: wget Http://mirrors.163.com/.help/CentOS6-Base-163.repo 2. Set Pacemaker Source: Vi/etc/yum.repos.d/centos.repo #贴入如下内容 [Centos-6-base] name=centos-$releasever-base mirrorlist=http://mirrorlist.centos.org/?release= $releasever arch= $basearch repo=os Enabled=1 #baseurl =http://mirror.centos.org/centos/$releasever/os/$basearch/ 3

corosync+pacemaker+iscsi+httpd Implement Web High availability of servicesFirst, the introduction of softwareCorosync implemented is the Membership and Reliable Group Communication protocolPacemaker is based on corosync/linux-ha Implement service ManagementCorosync includes the following components: Totem Protocol EVS CPG CFG QuorumExtended Virtual synchrony algorithm (EVS) two features available: Synchronization of group membership lists; Rel

Corosync Introduction: Corosync can use a simple configuration file to define the way and protocol of information delivery when passing information. It is an emerging software, launched in 2008, but in fact it is not a real sense of the new software, in 2002, there is a project Openais, it is too large, split into two subprojects, which can achieve HA heartbeat information transmission function is Corosync, its code 60% Left or right from Openais. Corosync can provide a complete ha function, bu

is the default data transmission model, can guarantee the integrity of the database. Installation Environment: centos6.5, installing the Corosync and pacemaker procedures, see the previous blog, the previous environment installed configuration interface is Crmsh, where the installation of PCs, the installation of PCs is relatively simple, #yum install pcs–y can After the installation is complete, the cluster status is as follows: 650) this.width=650

Corosync is used to enable multiple machines to communicate with each other (maintaining heartbeats), while pacemaker manages the entire cluster's operations on the Corosync top. Corosync is the future direction of development. In later new projects, the general use of Corosync, and Hb_gui can provide a good ha management functions, can achieve graphical management. In addition, related graphics have RHCs suite Luci+ricci. Consistency of highly avail