Label:Oracle 11G RAC cluster installation (vii)
Overview: write down the original intent and motivation of this document, derived from the Oracle Basic operating Manual of the previous article. The Oracle Basic Operations Manual is a summary of the author's vacation on Oracle's foundational knowledge learning. Then form a summary of the system, a review review, the other is easy to use. This document is also derived from this text. Before rea
Tags: mysql cluster ndb storageOne, NDB Cluster (distributed storage engine) storage Engine Brief IntroductionNDB storage Engine is also called NDB Cluster storage engine, mainly used for MySQL Cluster distributed cluster environment,Clu
Label:About MySQL cluster (Cluster) A MySQL cluster requires a set of computers, and the roles of each computer may be different. There are three types of nodes in the MySQL cluster: management nodes, data nodes, and SQL nodes. A computer in a cluster may be a node or a coll
MySQL Cluster in a MySQL Cluster1. References
2. Introduction
MySQL-Cluster is a technology that allows you to deploy "in memory" database clusters in a non-shared system. Without a shared architecture, the system can use cheap hardware without special requirements for hardware and software. In addition, each component has its own memory and disk, so there is no single point of failure.
The MySQL
Installing the HA SoftwareFirst, install the softwareThe most stable version is 5.4.0, priority installation stable version 5.4Install depends on package base.data, cluster man pack installation failure reason is missing Base.data packageInstall all cluster. Packages that begin with, you can not install the Cluster.man packageSecond, hit the HA patchExecute the instructions before patching: Inutoc generate
Environment4 nodes of the Hyper-V clusterFailure phenomena
Hyper -V Manager cannot remotely manage all
some VM Unable to successfully migrate
Cause of failureCluster node Time inconsistencyDetailed description and troubleshooting proceduresHyper - V Manager cannot remotely administer all of the clusters in the cluster Hyper-V,650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M00/78/35/wKioL1Z35YPRooJ-AAF1pV8iTc
Join:map End Join//Big table + Small table, only need mapReduce end Join//Big table + Big table, need map and reduce//Design combination key and flag//Group Contrast deviceJson:fastjson Technical Json.parseobject (str)//turn a string into JsonobjectJo.get (Key)//gets the value,string form that corresponds to the key specified by the JSON stringJo.getjsonarray//gets the value of the key specified by the JSON string, the array formin MR1 generation and MR2
3.6. Cluster Management Command 3.6.1. Startup and shutdown of RAC
Oracle RAC is powered on by default and can be used with the following commands if maintenance is required:
Shut down:crsctl Stop cluster Stopping this node Cluster servicecrsctl Stop Cluster–all all node servicesOpen:crsctl
Redis cluster useRedis Cluster scheme1, client fragmentation. such as: take surplus and so on2, Agent (proxy) fragmentation. By proxy absolute data access, such as: Twemproxy.3,redis cluster. No Center mode,4, Codis (Solution for pea pod development)Redis Cluster reference Documentation: http://redisdoc.com/topic/
command to synchronize and start the NTP service manually from the server:
# ntpdate 0.cn.pool.ntp.org
# hwclock-w #
Systemctl enable Ntpd.service
# Systemctl Start Ntpd.service
Install SSH service:
# yum Install Openssh-server
The second step, the preparation is done, now began to deploy the Ceph cluster.
Note: The following operations are performed at the Admin-node node, in this article, because Admin-node is shared with e1093, so it can be perf
Percona XtraDB Cluster how to install two Cluster nodes on one server
I think it makes no sense to run two or more Percona XtraDB Cluster (PXC) nodes on a single physical server, except for educational and testing purposes, however, this method is still useful in this case. The most popular implementation method seems to be server virtualization, such as using st
In what scenarios are cluster file systems applicable, I will summarize them in one sentence. When multiple nodes need to read and write the same file system, they need to use the cluster file system, it can pass the lock information held by the file system to each node.
Experiment 1: Create a gfs2 File System Using the disk shared by iSCSI. multiple nodes can be mounted to the same file system to ensure d
Tags: mysql high-availability scenario cluster1. Experimental environmentI built the MySQL cluster environment with three servers, the SQL node and the data node are on the same server, and the management node is a separate one.Cluster node1:192.168.1.102 Data node1:192.168.1.102Cluster node2:192.168.1.104 Data node2:192.168.1.104Manager node:192.168.1.19Os:centos 6.4 64-bit2. Install MySQL cluster on SQL n
Why use a cluster? There are two main reasons: first, for some core systems require long-term non-disruptive services, in order to provide high availability we need a cluster of multiple machines, on the other hand, as the traffic becomes more and more complex business logic, single machine processing capacity is not enough to deal with so many and complex logic, A number of additional machines are required
applications have a limit on the number of CPUs that can be used.
The server acts as a separate entity, which is a single point of failure in the solution. If only one server is responsible for passing the functionality of the component within the application, its failure can cause the application to fail.
Adding servers increases the complexity of managing and monitoring server hardware and its associated software.
Solution SolutionsInstall services or applications on more than on
1. Silent Installation (refer to previous articles)2. Silent domain, cluster, managed, computer, and add managed to clusterWrite a response file that includes the Supervisor port, the SSL port, the cluster name, the managed name, the computer name, and the cluster to which the managed is added and the supervisor password set[email protected] ~]$ cat CREAT.RSPRead
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.