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appropriate architecture design: · Amazon EC2 · Amazon EBS · Amazon RDS · Amazon VPC For EC2 instances, the availability of a single instance is not particularly high. If an instance fails, the availability of applications and data supported by the instance will be affected, therefore, the architecture design is required to improve
Ethernet switches are still commonly used, so I studied the high availability of stack 10/100 Ethernet switches. I would like to share with you here, hoping to be useful to you. Catalyst3524-PWRXL Ethernet switches are part of the CiscoSystemsCatalyst3500XL series, which is a series of scalable stack 10/100 and Gigabit Ethernet switches that provide optimal performance, manageability and flexibility, as wel
I talked to you about dns yesterday. I thought about it today. In fact, there are three types of dns used in the production environment: 1. intranet DNS call is generally a group of data centers with a ms structure. The main function is to call resolution between applications in the data center to reduce the dependency on hosts and avoid hard encoding. Generally, the ms structure is enough, and other high-availabi
The HA cluster model is as follows: the external vip address is 192.168.2.1, the active web host name node1 and the backup web host name node2. when the master web is dead, the web page in the backup status changes to the master status immediately. To achieve high availability. (Ignore storage) Node1 Configuration 1. Configure host name and IP address 2. Edit the hosts file so that the master and slave
Small Q: have been trying hard, and occasionally stop to rest, but also cheer up the spirit, continue to work hard,Try my best to realize my desire, dare not hope.We used heartbeat to configure a high-availability cluster, and we configured the load-balancing cluster with LVS, and now we can combine the functions of the two, with the introduction of the high-
?? We talked about our business, often talked about a word, three-tier architecture, which is the separation of our UI layer, the data access layer and the data storage layer, Typically, our high availability of business must meet the full high availability of these three tiers in order to achieve the highest level of
Deploying heartbeat high-availability requirements 1 operating systemsCENTOS-6.8-X86_64 2 Heartbeat Service Host resource preparationPrimary Server A:Host Name: heartbeat-1-130Eth0 Network card Address: 192.168.1.130 (Management IP)ETH1 Network card address: 10.0.10.4 (Heartbeat IP)From Server B:Host Name: heartbeat-1-129Eth0 Network card Address: 192.168.1.129 (Management IP)ETH1 Network card address: 10.0
Tags: heartbeat8.Heartbeat High-availability case for Web Services 8.1 deployment ReadinessFamiliarize yourself with the use of the Heatbeat software using the Web services high Availability case, with the two server machine names above heartbeat-1-130 and heartbeat-1-129 respectively8.2 Installing the Configuration HT
Tags: ha high availability keepalived read/write separation MHAExplore MySQL's high-availability architecture MHA (7)-----build MySQL High-availability series (total 9 articles)The previous article introduced the KeepAlive read-wr
Nginx + Keepalived for High Availability of hot standby Preparation: The two ip addresses of the machine are 192.168.100.128 192.168.100.129 (you can use a virtual machine for testing. The Network Mode of the virtual machine is NET and the static ip address is used) Prepare a virtual ip address to provide external services, that is, access the web application through the ip address. (Keepalive binds the vir
Nginx Server Load balancer dual-host High Availability If the Web server cluster is used as a city pool, the load balancing server is equivalent to the city gate, and its importance is self-evident. If the "City Gate" is closed, the access to the outside world will be broken. If a server is balanced, when the server fails, the whole website will be inaccessible. Therefore, we need more than two servers to a
This chapter describes how to build a mirrored database based on a previous single back-end DatabaseThe Lync Server backend is the SQL Server database, and the back-end high availability differs from the previous high-availability configuration followed by Lync Integration.High ava
Xen-server for single-point failover High Availability (HA)Create a new resource pool (the pool in this place is the server Xen-server pool)650) this.width=650; "height=" src= "http://a3.qpic.cn/psb?/594581eb-e62e-4426-a878-953c87dd5729/* shhfudflmmuj6cyulqkfinqlzgvpdx5erq0qjlcrke!/b/dgybaaaaaaaaek=1kp=1pt=0bo=igfjaaaaaaadae8! su=0202829665tm=1481868000sce=0-12-12rf=2-9 "width=" 289 "style=" margin:0px;padd
This article mainly discusses perforce's * Perforce centralized authorization * Perforce's support for Distributed teams * Server Load balancer and scalability of perforce * Perforce high availability and disaster recovery One perforce centralized authorization Currently, in many large companies, different departments have different p4servers, which leads to the simultaneous existence of m
I have previously written a heartbeat-ldirectord to achieve high availability of LVS. Here, a lightweight program keepalived is introduced based on vrrp protocol, which can also provide high availability for services, this program was originally developed to provide high
Through this article, you will learn about DB2Hadr functions and basic operating principles, you can quickly configure an hadr environment through an instance and perform some simple functional tests. Next we will discuss some technical points of hadr.Discuss in detail and give some suggestions. If you are considering the HA issue, I sincerely hope this article will help you. DB2 hadr Overview High Availab
Keepalived + nginx high-availability environment, keepalivednginx There are actually many high-availability solutions, and the cost is very low and simple. For example, if you have a website, the simplest high availability is nds
Deploy a robust high-availability layer-7 Load Balancing solution based on keepalived + nginx 20151214 High Availability is a common topic. Open-source high availability software has been developed quite well. Previously, it has d
LVS + Keepalived for high-availability Load Balancing I. Principle 1. Summary if you divide TCP/IP into five layers, Keepalived is similar ~ Software with layer-5 switching mechanism, with 3 ~ The layer-5 switching function is mainly used to detect the status of the web server. If a web server fails, Keepalived will detect and remove it from the system, when the web server is working normally, Keepalived au
High Availability Configuration 4. keepalived high-availability column brainFor some reason, the two keepalived high-availability servers cannot detect the heartbeat messages of each other within the specified time, and each of t
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