colocation providers

: nginxGroup webservice webip webserverProperty cib-bootstrap-options :\Have-watchdog = false \Dc-version = 1.1.14-8. el6-70404b0 \Cluster-infrastructure = "classic openais (with plugin )"\Expected-quorum-votes = 2 \Stonith-enabled = false Delete group:Crm (live) resource # stop webserviceCrm (live) configure # delete webservice # Resources in the Group still exist Node operation: Node offline:Crm (live) # nodeCrm (live) node # standby marvin # Automatic Resource Transfer Node launch:Crm (live)

: Filesystem params device = "/dev/drbd0" directory = "/www" fstype = "ext3" Crm (live) configure # colocation WebFS_on_MS_webdrbd inf: WebFS MS_Webdrbd: Master Crm (live) configure # order WebFS_after_MS_Webdrbd inf: MS_Webdrbd: promote WebFS: start Crm (live) configure # verify Crm (live) configure # commit View the running status of resources in the Cluster: Crm status ================ Last updated: Fri Jun 17 06:26:03 2011 Stack: openais Current D

Updated:tue Dec 8 11:28:35 2015Last Change:tue Dec 8 11:28:28 2015Stack:corosyncCurrent Dc:controller2 (167772172)-Partition with quorumVersion:1.1.12-a14efad2 Nodes configured2 Resources configuredOnline: [Controller2 Controller3]MYVIP (OCF::HEARTBEAT:IPADDR2): Started controller2Haproxy (lsb:haproxy): Started Controller3Currently Haproxy resources on the node Controller3, on the Controller3 view Haproxy service status, is active:# Systemctl Status-l Haproxy.serviceDefining Haproxy and VIPs mu

configure colocation drbdfs_and _ms_drbdweb Inf:drbdfs ms_drbdweb:master configure order Ms_drbdweb_before_drbdfs Mandatory:ms_drbdweb:promote Drbdfs:start 3. The final result is as follows: configure show 650) this.width=650; "title=" 3.png "alt=" wkiom1ygszlgjlaaaalxj2tlimy467.jpg "src=" http://s3.51cto.com/wyfs02/M00/ 74/8e/wkiom1ygszlgjlaaaalxj2tlimy467.jpg "/>in the reshttpd and the Resip is the configuration of the last experiment, which ca

should run in that node, and whether it can run on a node is defined by resource constraint.Constraint: Resource constraints are divided into three categories Location: position ConstraintsUse fractions to define whether resources tend to run on this nodeINF: Tends to run on this node-inf: Not inclined to run on this node Colocation: permutation constraintsUse fractions to define whether a resource can run on one node at a timeINF: Capable of running

crack. In order for this mechanism to work effectively, there are at least 3 nodes in the cluster, and the No-quorum-policy is set to stop, which is also the default value. (Many tutorials for the convenience of demonstration, all the no-quorum-policy set to ignore, production environment if so, and no other arbitration mechanism, is very dangerous!) ） But what if there are only 2 nodes? One is to pull a machine to borrow to fill 3 nodes, and then set the location limit, not to allocate resour

slave node each runs one copy, and can only run on these 2 nodes.For some cluster services, the startup-related resources are sequential. For example, to start a MySQL Cluster service, you should first mount a shared storage device, or the instant MySQL service starts up, and the user cannot access the data. So, generally, we need to constrain resources. There are several types of resource constraints:(1), Position constraint (location): the degree to which a resource tends to be a node, usuall

should first mount a shared storage device, or the instant MySQL service starts up, and the user cannot access the data. So, generally, we need to constrain resources. There are several types of resource constraints:(1), Position constraint (location): the degree to which a resource tends to be a node, usually defined by a fraction (score), which indicates that the resource tends to be associated with this node when score is positive, and a negative value indicates that the resource tends to fl

interval=" 0 "timeout=" 240s "Group Resources and constraintsEnsure that the drbd,mysql and VIPs are on the same node (Master) and determine the start/stop order of the resources through the group.Start: P_fs_mysql–>p_ip_mysql->p_mysqlStop: P_mysql–>p_ip_mysql–>p_fs_mysqlCRM (Live) configure# group G_mysql p_fs_mysql P_ip_mysql P_mysqlGroup Group_mysql always only on master node:CRM (Live) configure# colocation C_MYSQL_ON_DRBD inf:g_mysql ms_drbd_mys

Add your own classes to the IOC container as you know in the previous article that serviceprovider manages container. Therefore, you must register serviceprovider to manage your classes when adding your own classes to the container. 1. create a custom class It should be noted that laravel can automatically load php classes in its app directory, as long as it complies with the naming rules of psr4. App/Billing/Stripe. php // here, a Billing directory is created under the app, and a Stripe cl

Onos after the advent of widespread concern, about Onos and ODL dispute, recently small series read Onos white paper, and do a little superficial summary, the following to share with you.1 Onos Birth Background 1.1 Onos The benefit analysis of the birthWith the increasing popularity of mobile devices, the rise of OTT services and content distribution has led to an urgent need for a network revolution in service provider networks. To cope with the growing bandwidth demands, service

standards. 2. What makes cloud computing? The National Institute of Standards and Technology (NIST) defines five key features, three service models, and four deployment models for cloud computing. As shown in 1, detailed descriptions will be provided later. 2.1 key features of cloud computing The five key features presented by cloud services represent their relationships and differences with traditional computing methods: • On-demand self-service: users can automatically configure c

emerging Multi-Protocol Label Switching Technology (MPLS) is expected to solve this problem.How MPLS works According to the current definition, MPLS is a label-Based IP Route Selection Method. These tags can be used to represent a hop-by-hop or explicit route, and specify the Quality of Service (QoS), virtual private network, and traffic that affects a specific type (or traffic of a special user) other types of information transmitted over the network. Currently, the routing protocol selects th

As you know from the previous article, ServiceProvider is managing container, so when you add your own classes to container, you also register serviceprovider to manage 1. Create a custom class It is important to note that Laravel can automatically load the PHP classes in its own app directory, as long as it conforms to the PSR4 naming convention. app/billing/stripe.php //Here in the APP set up a billing directory, which put a Stripe class 2. Create a service provider Use this command

a logical model view of the SOA Foundation Reference Architecture. This logical model view decomposes the functional underpinnings of the SOA solution. This functional or IT-centric view depicts the ESB as an integrated part that provides the interconnection between other IT parts of the solution. Figure 1. IBM SOA Foundation Reference Architecture Logical Model view Figure 2 shows the SOA Foundation Reference Architecture solution view. This is a business-centric view of a service-oriented sol

"\Op start timeout = "240 s" interval = "0 "\Op stop timeout = "100" interval = "0"Primitive FileSys ocf: heartbeat: Filesystem \Params device = "/dev/drbd0" directory = "/mysqldata" fstype = "ext4 "\Op start timeout = "60 s" interval = "0 "\Op stop timeout = "60 s" interval = "0"Primitive Mysqld lsb: mysqldPrimitive vip ocf: heartbeat: IPaddr \Params ip = "10.1.15.30" nic = "eth0" cidr_netmask = "24 "\Op monitor interval = "10 s"MS: My_Drbd Drbd \Meta master-max = "1" master-node-max = "1" clo

-round" engineers and professionals. Engineers can write code and perform tests. Encourage Open Source and code to be "Transparent" in the company. After the code is mature, open source will be selected; create a virtual team + scrum. In terms of the large organizational structure, the product department and the R D department are separated by two different departments and different personnel management departments, colocation is enhanced through vir

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 sour

timeout = 60 s op stop timeout = 60 s Specify constraints to constrain all resources together Crm (live) configure # colocation myweb inf: webip webserver webmysql webfs ms_drbd: Master Define order Crm (live) configure # order webfs_after_drbd inf: ms_drbd: promote webfs: start # mount the file system only when drbd is promoted to the primary node Crm (live) configure # order webmysql_after_webfs inf: webfs: start webmysql: start # mysql can be star

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.confExperimental Host: A BResource RA provider (crm->r