cellular failover

Tags: Database sql ServerDetermine the quorum modeWhen configuring a failover cluster, if the cluster nodes are odd, use the majority node, and if the cluster nodes are even, use the majority node and file share (Configure a shared folder where each node can access the shared folder)Because they are even nodes (SQL01 and SQL02), select Majority node and file share mode2. Install failover cluster, both SQL01

Tags: open roc sha execution with BIND complete after rest organizationSQL Server Failover cluster+ ALwaysOn (three)We introduced the configuration of SQL Server Failover cluster in the previous two articles, and described the previous conditions for configuring the new AlwaysOn node, and today we mainly describe the detailed configuration of always. As we mentioned earlier, if you want to implement SQL Ser

Today our topic is a new feature in Windows Server 2012, DHCP failover, DHCP is not too much to introduce this is a very basic knowledge, DHCP in Windows Server 2012 In fact there are three major new features, namely:DHCP Fail-OverPolicy-based allocationPowerShell for DHCPIn Windows server R2, two high-availability options are available for DHCP server deployment. Each of these options is related to a number of questions.DHCP in Windows

After Node 1 is reboot, why is the resource of Node 1 not failover to node 2? Symptom: the customer asked a question, that is, during the reboot process of Node 1, through monitoring, there was no After Node 1 is reboot, why is the resource of Node 1 not failover to node 2? Symptom: the customer asked a question, that is, during the reboot process of Node 1, through monitoring, there was no After Node

The failover processing process bitsCN.com after the master database of db0101 is down in 48 nodes groups online Failover processing after 48 nodes in the online group and db0101 master database are down When a call is received, db0101 is Down and an error is reported: (1) Error 500,503,504 Error on the application page (2) email alert db0201 is down now! 1. Initial Determination of symptoms Ping ipv222

11g Dataguard standby cut into the main library and restored to the original standby environment after the test is completed#######################Overview:11204 single machine to implement DG, because the local requirements (read-write mode) to open standby, and then the original production environment can not have any impact, still external services;The idea is that: Standby direct failover to primary db, then the original DG relationship is destroy

1. Switch: User actively switch;2. Failover: Main Library failure, forced to switch; Switchover: General switchover switch are planned to switch, characterized by switching, will not lose any data, and this process is reversible, the entire dataguard environment will not be destroyed, All physical and logical standby in the original Dataguard environment can continue to work.Before you make a physical standby switch for Dataguard, you need to be awar

Before you create a SQL Server 2000 failover cluster, you must configure Microsoft Cluster Service (MSCS) and use the Cluster Administrator in Microsoft Windows NT4.0 or Windows 2000 to create at least one cluster disk resource. Before running SQL Server Setup, note the location of the cluster drive in the Cluster Administrator because this information is required to create a new failover cluster. Only SQL

A failover cluster must meet certain requirements of the hardware, software, and network infrastructure, and it requires an administrative account with the appropriate domain permissions. Specifically as follows: (i) Hardware requirements for failover clusters In a failover cluster, the following hardware is required: (1) Server: It is recommended that you use

This topic explains how to use the Failover Cluster Management tool or Cluster.exe to evict a node from a Windows Server 2008 failover cluster. After a node is exited from the cluster, the node cannot host the clustered mailbox server. If, for any reason, you attempt to evict a node from a failover cluster, you can use the last procedure in this topic to force t

Problem Database mirroring has become a popular feature in SQL Server 2005. With the following simple steps, using the SQL Server Management suite or running some T-SQL commands, you can easily create database mirroring in one or more of your databases. One of the configuration options for database mirroring is high availability mode. With this option, the principal, mirror, and witness three servers are placed in the appropriate location. This is the only option that allows automatic troublesh

We've written a lot of SQL Server-related articles in the near future, in order to improve the usability of the service, we think of the deployment AlwaysOn, the previous environment just deployed SQL Server Failover Cluster, so decided to put the cloud in a SQL Server to configure AlwaysOn, the idea is to add a node to the local SQL Server Failover cluster, then place the new home node in the Azure cloud a

= "Wkiol1tdjkisrhltaahrywrz6cy384.jpg"/>go to one of the file servers and link the shared disk. Configure the iSCSI initiator on the server , link the shared disk, enter the host name of the emulated virtual disk in the target, two file servers to link the shared disk, and then enter two servers respectively, install the required roles such as file services; After the role is added, The failover cluster feature is then added for two servers respective

I haven't written a blog for a long time. We have recently studied storm, flume, and Kafka. Today, I will write down the scenarios and conclusions for testing flume failover and load balance; The test environment contains five configuration files, that is, five agents. A main configuration file, that is, the configuration file (flume-sink.properties) for configuring the Failover and load balance relationshi

Dataguard is an important solution officially recommended by Oracle for the MongoDB architecture. Currently, RAC + Local federation uard + Remote Federation uard has become a common HA architecture in the industry. Switchover and failover are the most common operation scenarios for RAC and replica uard.Failover is an unplanned switchover action. Generally, the Primary database Primary has a hardware and software fault. If you cannot continue to provid

How can I use the flashback database feature to restore the replicasuard environment after a failover ?, FailoverdataguardThe 11g slave uard standby is cut into the master database. After the test is completed, it is restored to the original standby environment.#######################Overview:11204 if a single machine implements dg on a single machine, standby needs to be enabled because of the local requirement (read/write mode). In this case, the or

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, log on to the Cluster Administrator to locate the cluster drive, because this information is required to create a Failover cluster. Only SQL S

Oracle 11g introduces scan ip. However, in the absence of DNS, the client connection to RAC is still using oracle 10 Gb. Configure failover in tnsname. ora of the client.ORCL =(DESCRIPTION =(ADDRESS_LIST =(LOAD_BALANCE = yes)(ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.3.203) (PORT = 1521 ))(ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.3.204) (PORT = 1521 ))(ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.3.205) (PORT = 1521 )))(CONNECT_DATA =(SERVICE_NAME =

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, log on to the Cluster Administrator to locate the cluster drive, because this information is required to create a Failover cluster. Only SQL S

File Server failover Cluster U Case Requirements How do I configure a failover cluster for a file server? U Knowledge Tips DHCP servers need to use DHCP relay to assign IP addresses across network segments. Because DHCP relies on broadcasts to communicate, and different segments of traffic need to be routed, and routers are isolated broadcasts by default, all of the IP addresses to be assigned across networ