cellular failover

Redis SentinelThe module has been integrated into the redis2.4+ version, although it is not release at the moment, but it can be attempted to use and understand, in fact Sentinel is still a bit complicated. The main function of the Sentinel is to provide the Redis m-s (master,slaves) cluster with 1 master Survival Detection 2) cluster M-S Service monitoring 3) automatic failover, m-s role conversion and other capabilities, in one respect, improve the

How to Create a SQLServer2000 failover Cluster How to Create a SQL Server 2000 failover Cluster Before creating an SQL Server 2000 failover cluster, you must Configure Microsoft cluster service (MSC) and use the Cluster Administrator in Microsoft Windows NT4.0 or Windows 2000 to create at least one cluster disk resource. Before running the SQL Server installer,

Load balancing and failover 1, mission objectivesThis task is to solve the server load balancing and failover, this load balancing is to achieve a true sense of load balancing, the actual use, according to the server's various performance indicators for task allocation, in order to achieve fast response, experience high effect. Second, failover is a complement to

The failover of Oracle Data Guard was described in both previous articles, but there was no systematic explanation, so in this paper, DG's failover is described in a systematic note. The processing of failover redo under physical data Guard http://www.cndba.cn/Dave/article/883 Oracle Data Guard Linux Platform Physical Standby Build example http://www.cndba.cn/D

Tags: SQL Server 2012 failover Clustering Best PracticesOne, the installation configuration of the Windows Server 2012 system primary DomainFeature Description:SQL Server A failover cluster appears on the network as a single instance of SQL Server on a computer. Within a cluster, only one node at a time has a cluster resource group that satisfies all client requests for that

DHCP failover in Windows Server 2012 allows administrators to deploy DHCP services with native high availability, the main objectives of this feature are as follows:DHCP failover in Windows Server 2012 allows administrators to deploy DHCP services with native high availability, the main objectives of this feature are as follows:Always provide DHCP service availability on the corporate network.If a DHCP serv

Misunderstanding #1: After server failover, ongoing transactions continue to be executed Of course this is wrong! Each failover is accompanied by some form of recovery. However, if the transaction being executed does not have a Commit, the connection is disconnected because the server or instance crashes, SQL Server cannot re-establish the transaction context on the Server after the

this, we have been ignoring the azure of a unique secret, currently I have not found other public cloud to provide DSR support!Below we create two virtual machines using CentOS 6.7 Images and configure a Linux server failover cluster on the Azure China edition.Pre-preparation work:1. Place two virtual machines in the same cloud service and must use standard type virtual machines.2. Assign a fixed network IP address (DIP) and public IP address (Reserv

Javaoraclethin and oci Connection Methods for multi-database failover I. thin method is simple and easy to use. The URL is jdbc: oracle: thin: @ (DESCRIPTION (LOAD_BALANCEon) (ADDRESS (PROTOCOLTCP) (HOST127.0.0.1) (PORT1521) (ADDRESS (PROTOCOLTCP) (HOST10.132. Java oracle thin and oci Connection Methods for multi-database failover I. thin is a simple and easy to use method. The URL is jdbc: oracle: thin: @

OverviewIn the RAC environment to configure Ogg, in order to achieve the RAC node failure, Ogg can automatically failover to the normal node, to ensure that two points:1. ogg's CHECKPOINT,TRAIL,BR file is placed on the shared cluster file system, and the RAC nodes can access the2. Cluster software is required to monitor the Ogg process and automatically restart Ogg (failover) on the normal node in the event

can find that the master server and the replica server have exactly the same time, while the replica server also has a WIN7-01 of this virtual machine. 650) This. width = 650; "Title =" clip_image016 "style =" border-top: 0px; border-Right: 0px; border-bottom: 0px; border-left: 0px; display: inline "border =" 0 "alt =" clip_image016 "src =" http://img1.51cto.com/attachment/201407/10/8946015_1404969866PzS4.png "" 644 "Height =" 409 "/> 650) This. width = 650; "Title =" clip_image017 "style ="

15.3 Accessing an AlwaysOn failover cluster15.3.1 Configuring SQL Server InstancesSimilar to instances where the local computer is installed independently, instances of AlwaysOn failover clusters also need to be configured with SQL Server Configuration Manager.In this example, an AlwaysOn failover cluster is installed as a named instance, so you need to configure

Javaoraclethin and oci Connection Methods for multi-database failover I. thin mode where URL is jdbc: oracle: thin: @ (DESCRIPTION (LOAD_BALANCEon) (ADDRESS (PROTOCOLTCP) (HOST127.0.0.1) (PORT1521) (ADDRESS (PROTOCOLTCP) (HOST10.132.111.14) (PORT1521) (CON Java oracle thin and oci Connection Methods for multi-database failover I. thin mode where URL is jdbc: oracle: thin: @ (DESCRIPTION = (LOAD_BALANCE = on

Reference and: "Think Twice" this book The failover of physical standby Note Some points: After 1 failover, the original primary database is no longer part of the data guard configuration by default. 2 in most cases, other logical/physical standby databases are not directly involved in the failover process, so these databases do not require any action. 3 in som