equinix colocation

(score:100) enabled On:node2 (score:50) Ordering Constraints: Start VIP then start Web (kind:mandatory) Configure an arrangement constraint to have the VIP run with the Web resource with a score of 100[[Email protected] ~]# pcs constraint colocation add VIP with Web 100[[Email protected] ~]# pcs constraint showLocation Constraints:Resource:httpgroupEnabled On:node1 (score:200)Enabled On:node2 (score:100)Resource:vipEnabled On:node1 (scor

hardware-Reduced backup latency to 0-can now arbitrarily improve the scalability of the databaseData Center Policies1, relies on credit cards, so initially only managed hosting providers can be used2, managed hosting provider cannot provide scalability, cannot control hardware or use good network protocols3,youtube use colocation arrangement instead. Now YouTube can customize everything and contract its own contract4, using 5 to 6 data centers plus a

: 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

"\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

) configure# primitive webip ipaddr params ip=192.168.1.10 nic=eth0 Cidr_netmask=24crm (live) configure# primitive Ldirectord lsb:ldirectord op start timeout=15s interval=0 op stop timeout=15s Interval=0crm (Live) configure# colocation webip_with_ldirectord Inf:webip Ldirectordcrm (live) configure# order Ldirectord_after_webip Inf:webip Ldirectordcrm (Live) configure# Verifycrm (live) configure# commitProfile Paste-OutCRM (Live) configure#shownodenode

OCF:HEARTBEAT:IPADDR2 params ip= "192.168.1.10" nic= "eth0:0"CRM (Live) #Configure primitive Mfsmaster Lsb:mfsmasterCRM (Live) #Configure monitor Mfsmaster 30s:30sCRM (Live) #Configure group Mfsmaster_group MFSMASTER_VIP Mfsmaster_fs MfsmasterCRM (Live) #Configure Ms Mfsmaster_drbd_ms MFSMASTER_DRBD meta master-max= "1" master-node-max= "1" clone-max= "2" Clone-node-max = "1" notify= "true"CRM (Live) #Configure colocation Mfsmaster_colo inf:mfsmaster

video viewing pool and a generic cluster2, late-Database Partitioning-Divided into shards, different user designations to different shards-Diffusion read/write-Better cache location means less IO-30% reduction in hardware-Reduced backup latency to 0-can now arbitrarily improve the scalability of the databaseData Center Policies1, relies on credit cards, so initially only managed hosting providers can be used2, managed hosting provider cannot provide scalability, cannot control hardware or use g

logic (exchanges and bindings) from message queueing (queues ). multicast relates only to routing from message publishers to message queues, and as a routing optimisation can be completely physically decoupled from AMQP's logical semantics. further optimisations include physical separation of exchange from queue or even colocation of queue with a consumer application. Transactional publication and acknowledgementAMQP supports transactional publicati