failover and failback

Label:Today to experience MySQL's auto-failover function, here is a tool MySQL Utilities, it is very powerful. This tool provides the following features:(1) Management tools (clone, copy, compare, diff, Export, import)(2) Copy tool (installation, configuration)(3) General tools (disk usage, redundant indexing, search metadata)And we use it to implement Master-slave's automatic failover, which beginsmaster:1

Label:Oracle RAC has both ha (high availiablity) and lb (loadbalance). And the basis of its highly available Failover (fail over)It means that the failure of any node in the cluster will not affect the user's use, the user connected to the failed node will be automatically transferred to the health node, from the user experience, is not feel the switch. the Oracle 10g RAC failover can be divided into 3 ty

#关闭保护模式, disable remote direct access to requirepass 654321 #本地访问需要密码 masterauth 654321 # Backup sync access requires password slave-read-only Yes #备端只读 # Configure Redis Sentinel to configure monitoring for the primary instance only. Sentinel can obtain information from the instance through the master instance. # Basic parameter description: Port 26379 #Sentinel Service port Sentinel monitor Myredis 192.168.1.xxx 6379 1 #监控 People group name/ip/Port/ The number of failure judgements (wh

The most outstanding performance of the OracleRAC cluster is high availability, which mainly includes loadbalance and failover. Through these technologies, spof does not affect the client. The most outstanding performance of Oracle RAC clusters is high availability, which mainly includes load balance and failover. These technologies enable single point of failure to not affect the client side. The most

Reprint: http://dufei.blog.51cto.com/382644/902026Today, customers ask about Windows Clustering, after all, the cluster technology supported by Windows SERVER2008 and Windows Server2003 are a bit different, and the following knowledge is collected for reference. The following items are from the Internet.Windows Server 2008 provides two clustering technologies: a failover cluster and a network that is responsible for balancing the cluster.

Oracle RAC also has HA (High Availiablity) and LB (LoadBalance), and its High availability is based onFailover (Failover)It means that the failure of any node in the cluster will not affect the user's use, and the user connected to the faulty node will be automatically transferred to the healthy node. In terms of user experience, this switchover is not felt. Oracle 10g RAC Failover can be divided into thre

Introduction to the high availability of a replica set the replica set achieves high availability through automatic failover. When the master node fails, the slave node can be elected as the master node, in most cases, this process is automatically performed without manual intervention. In some cases, data rollback is required for automatic failover. Deployment method of replica set (copy integration Introd

An oracle 11GR2 javasuard switchover failover article, hoping to help you. 1. switch: the user actively switches;2. failover: the master database fails and the switchover is forced; Switchover, all physical and logical standby operations in the dataguard environment can continue.Note the following before performing the physical standby switch of the volume uard:1. confirm that the network connection between

-1.5.6-1.el6.noarch.rpm-y?Service Construction:Environment preparationMonitor???? Server1???? 192.168.88.121???????? # #监控最好有独立的服务器Master???? Server2???? 192.168.88.122Slave???? Server3???? 192.168.88.123Slave???? SERVER4???? 192.168.88.124The monitor needs to be connected to Ms to get the running statusAuthorization : basic: Super, Replication,slave,reload,Sometimes, when multiple programs run MySQL failover,# #监控避免单点Create,insert,drop,select (--forc

Label: What is LooksAlive check and is alive check A SQL Server failover cluster is a highly available scenario that is based on a hot standby on the Windows Cluster service. While the cluster is running, the Windows Cluster service periodically detects the resource health state of the node and, if a failure occurs, switches the SQL Server service from the failed node to the available node based on a pre-defined