openstack ha

Label:This series analyzes OpenStack's high availability (HA) concepts and solutions: (1) Overview of OpenStack high-availability scenarios (2) Neutron L3 Agent HA-VRRP (Virtual Routing Redundancy Protocol) (3) Neutron L3 Agent ha-dvr (Distributed virtual machine router) (4) RabbitMQ

OpenStack is an open source project designed to provide software for the building and management of public and private clouds. Its community is home to more than a few companies and 1350 developers, both of which use OpenStack as a common front-end for infrastructure as a service (IaaS) resources. The first task of the OpenStack project is to streamline the deplo

balance between. More discussion of system performance and architecture is also being carried out around consistency and availability.2) engineering practices for OpenStack, Swift and CapIn contrast to cap theory, OpenStack's distributed object storage System, swift, satisfies availability and partition tolerance, without guaranteeing consistency (optional), but achieving eventual consistency. Swift if the get operation does not include the ' x-newes

Build OpenStack High Availability (Ha,high availability)first, the database MySQL high reliability:clusters are not highly reliable,A common approach to building high-reliability MySQL is active-passive master mode : Using DRBDto achieve the disaster tolerance of the main standby machine, heartbeat orCorosyncdo heartbeat monitoring, service switching, or even failover,pacemaker to achieve service (resource)

:# vi/etc/haproxy/haproxy.cfgListen Keystone_admin_clusterBind 10.0.0.10:35357Balance SourceOption TcpkaOption HttpchkOption TcplogServer Controller1 10.0.0.14:35357 check Inter rise 2 Fall 5Server Controller2 10.0.0.12:35357 check Inter rise 2 Fall 5Server Controller3 10.0.0.13:35357 check Inter rise 2 Fall 5Listen Keystone_public_internal_clusterBind 10.0.0.10:5000Balance SourceOption TcpkaOption HttpchkOption TcplogServer Controller1 10.0.0.14:5000 check Inter rise 2 Fall 5Server Controller2

Password 123456Openstack-config--set/etc/neutron/metadata_agent.ini DEFAULT nova_metadata_ip MYVIPOpenstack-config--set/etc/neutron/metadata_agent.ini DEFAULT Metadata_proxy_shared_secret METADATA_SECRETOpenstack-config--set/etc/neutron/metadata_agent.ini DEFAULT verbose TrueModify the configuration file in the control node:Openstack-config--set/etc/nova/nova.conf Neutronservice_metadata_proxy TrueOpenstack-config--set/etc/nova/nova.conf Neutronmetadata_proxy_shared_secret METADATA_SECRETRestar

MySQL uses Galera to do active/active clusters, while using pacemaker, because Galera MySQL uses the leadership of the election mechanism quorum, so the control node of at least three RABBITMQ using mirrored queues, run in active/active mode Stateful services such as neutron agents use pacemaker to do active/passive deployment Stateless service front end plus haproxy, so stateless service is not deployed on compute nodes The HA deployment 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

} joined {} left {} partitioned {9e2b15dd,0})151020 15:30:05 [Note] Wsrep:view ((empty))151020 15:30:05 [Note] WSREP:gcomm:closed151020 15:30:05 [Note] wsrep:new component:primary = no, bootstrap = no, My_idx = 0, Memb_num = 1151020 15:30:05 [Note] wsrep:flow-control interval: [16, 16]151020 15:30:05 [Note] wsrep:received non-primary.151020 15:30:05 [Note] wsrep:shifting PRIMARY, OPEN (to:5858)151020 15:30:05 [Note] wsrep:received self-leave message.151020 15:30:05 [Note] wsrep:flow-control inte

, and quorum is 4. If the nodelist parameter is set, Expected_votes is not valid.A wait_for_all value of 1 means that when the cluster is started, the cluster quorum is suspended until all nodes are online and joined to the cluster, and this parameter is added to Corosync 2.0.Last_man_standing is 1, enabling the LMS feature. This feature is off by default, which is a value of 0. When this parameter is turned on, when the cluster is at the voting edge (such as expected_votes=7, while the current

, where any node can read/write without the need for a read/write separation.-No centralized management, can lose any node at any point in time, the normal work of the cluster will not be affected.-node downtime does not result in data loss.-Transparent to the app, no need to change the app or just make minimal changes.* * Architecture Disadvantages * *-The cost of joining the new node is large and the complete data needs to be copied.-The write extension problem cannot be resolved effectively,

Not much to say, directly on the dry goods!　　1, start each machine zookeeper (bigdata-pro01.kfk.com, bigdata-pro02.kfk.com, bigdata-pro03.kfk.com)2, start the ZKFC (bigdata-pro01.kfk.com)[Email protected] hadoop-2.6.0]$ pwd/opt/modules/hadoop-2.6.0[Email protected] hadoop-2.6.0]$ sbin/hadoop-daemon.sh start ZKFC　Then, see "authored" Https://www.cnblogs.com/zlslch/p/9191012.html 　　Full network most detailed start or format ZKFC when the Java.net.NoRouteToHostException:No route to host appears ...

Highly Available Concept Level Chen Ben How to Achieve Classification The ha of OpenStack virtual machine ha compare application level ha,heat ha template

Well, we've already installed fuel master, and now we're ready to install OpenStack, so you can see the OpenStack main interface when the installation is complete.Continue yesterday, we went into the fuel UI and then "new OpenStack Environment" to create the OpenStack deployment environment.650) this.width=650; "src="

Mysql HA-Install DRBD + HeartBeat + Mysql On Redhat 6.3, ha-installdrbd Configuration information: Primary：Name:zbdba1OS:redhat 6.3IP:192.168.56.220drbd:8.4.0heartbeat:3.0.4Standby:Name:zbdba2OS:Redhat 6.3IP:192.168.56.221drbd:8.4.0heartbeat:3.0.4 The procedure is as follows: 1. Install DRBD 2. Install Mysql 3. Test DRBD 4. Install Heartbeat 5. Test Heartbeat 1. Install DRBDDownload drbd:Wget http://oss

automatically download, but the time is longer, not recommended. First select the CentOS system, as shown in Figure 5. Figure 5: Selecting the operating system Second, select deployment mode, multiple nodes can be used for testing/development, HA can be used directly in the production environment, because we are also in the testing phase, so select the deployment of OpenStack multi-node non-

HA high-availability cluster and HA Available ClusterPrepare two machines:Master: 192.168.254.140Slave: 192.168.254.141vim/etc/hosts master, slave: 192.168.254.140 master192.168.254.141 slave1. Master and master installation:Wget www.lishiming.net/data/attachment/forum/epel-release-6-8_64.noarch.rpmRpm-ivh epel-release-6-8_64.noarch.rpmYum install-y libnetyum install-y heartbeat2. Edit the three configurati

HA (High available) High Availability cluster ( two-machine hot standby)1. Understanding: Two servers A and B , when a service, B idle standby, when a service outage, will automatically switch to the B machine to continue to provide services. When the host is back to normal, the data consistency is resolved through the shared storage system by automatically or manually switching to the host as set by the user.2. The software that implements this func

fast configuration Supports multiple operating systems and distributions, supports HA deployment x external API to manage and configure the environment, such as dynamic add compute/Storage node x comes with Health Check tool x support neutron, such as GRE and namespace are all in, subnets can be configured specifically to use which physical network card, etc. What is the architecture of Fuel?Fuel Master node: Used to provide PXE mode operati

Support for HA deployments with multiple operating systems and distributions Externally provided APIs to manage and configure the environment, such as dynamically adding compute/storage nodes Self-carrying Health check tool Support for neutron, such as GRE and namespace are all done, subnet can configure the specific use of the physical network card, etc. What is the structure of the Fuel?Fuel Master: A PXE-mode operating system inst