configuration steps to implement this feature:1) configure two WAN interfaces as Ethernet links. In this case, the Ethernet direct connection is used as an example;2) Configure static routes and set the same priority;3) configure a policy route to evenly distribute traffic to two links.
2. Notes
The two routes have the same priority.Configure the rule that the route address is an even number and the address is an odd number.The priority of a policy r
as early as possible before it enters the process user address space from the kernel buffer. And because the scheduler can be used under the application layer, these load-balancing systems can support more network service protocols, such as Ftp,smtp,dns, as well as applications such as streaming media and VoIP.DNAT: Reverse NAT, place the actual server in the internal network, and the NAT server as the gat
LAN environment, the performance test is carried out for 2 kinds of picture server and not using Picture server. The hardware configuration is as follows: A Web server, a database server, configured to Cpu:intel Xeon four 2.2 GHz, Memory 4 GB, network bandwidth MB/s. Client machine 5 for Cpu:pentium 3.0 GHz, Memory 2 GB, network bandwidth MB/s. Picture server 3, for ordinary PC: Cpu:intel Dual-core P2.0 GHz, Memory 1 GB, network bandwidth 100mb/s. Th
server Load balancer Technology for network applications. It is completely isolated from switches and servers and becomes an independent technical device. This is the object we will discuss now. Generally, Server Load balancer is divided into seven layers based on different network layers. The second layer of Server Load balancer refers to the use of multiple ph
used as MySQL, mail or other non-web load balancing, we often use it as a MySQL (read) load balancing;Four, with a strong monitoring server status of the page, the actual environment we combine Nagios Mail or SMS alarm, this is also I like it one of the reasons;Five, Haproxy support virtual host.
When doing a
from:http://yuhongchun.blog.51cto.com/1604432/697466
Now the trend of Web site development on the use of Network Load balancing with the increase of site size according to different stages to use different technologies:One is the hardware to carry out, the common hardware has more expensive NetScaler, F5, Radware and array and other commercial load balancer, it
iptables, Linux kernel operations, performance compared with the reverse proxy server does not have a qualitative leap; IP load balancing still needs to forward requests to the actual server, at the same time, the response from the actual server needs to be forwarded to the user. Therefore, the performance bottleneck of the server comes from the performance and network bandwidth of the NAT server;3: Direct
LVS introduction:
The LVS cluster has three configuration modes: DR, Tun, and Nat. You can perform Load Balancing for WWW Service, FTP service, and mail service. below, you can build a load balancing instance for WWW Service, DRDs-based LVS cluster configuration
Director-server: core server of LVS, which is similar t
: #ipvsadm -a -t 172.16 .100 .1 : 80 -r 192.168 .10 .9 -m 5. View-L|l[options]-n:数字格式显示主机地址和port号--stats:统计信息--rate:速率--timeout:显示tcp、tcpfin和udp会话的超时时间值--daemon--sort:跟协议、地址、port进行排序,默觉得升序-c:显示当前ipvs连接状况6. Remove all cluster Services: -C:清空ipvs规则7. Save the Rules-S:(用输出重定向进行保存)格式:`#ipvsadm -s >/path/to/somefile`8. Load the previous rule:-R格式:`#ipvsadm -R View Original
Original works, agreed to reprint, please be sure to use hyperl
The LVS (Linuxvirtualserver) Cluster type is usually described by LVSDirector's request to relay to the cluster node. Currently, there are three available methods: the number of nodes that can be owned when the network address translation (LVS-NAT) different network 10 ~ 20 direct routing (LVS-DR) (Scheduler) same network high (100) ip tunneling (LVS-TUN) Support WAN high (100) Basic LoadBalancer structure: Level 3
The LVS (Linux virtual server) Clust
Ii. lb
Loadbalance distributes load balancing to all nodes in the cluster to improve the overall throughput. Oracle 10gRAC provides two methods to achieve load. One is to allocate users to different nodes by using connection balancing, and the other is to distribute data on the application layer through services.
Conne
server, port ing is required on both public lines to serve the Internet user groups on different lines.
Iii. Solution
1. Add a link load balancing device in the solution, connect the network cables connected to the WAN port and WAN1 port of the VPN device to the link Load Balancin
I. Cluster Technology Overview
1. Cluster type
Both clusters have at least two node servers. In addition, they provide only one access portal, which is equivalent to a large computer. According to the target differences of the cluster, there are three types.
Server Load balancer cluster: To improve the application system's response capability, process as many access requests as possible, reduce latency, and achieve full-day performance with high concu
Network Network Load Balancing enables organizations to cluster up to 32 computers running Windows Advanced Server to balance the flow of incoming traffic while maintaining the health of the monitoring server and NIC. The dual benefits of a simplified and enhanced scalability combined with high availability enable Network Loa
virtual machine technology, respectively, 1 logical firewalls and 1 logical switches, and dual main mode, in case of export load balancing at any time business switching. Scheduling algorithmConsidering that most of the domestic products based on open source software for two of development, it is decided to trace from the open-source product LVS scheduling algor
of security, reliability, and load balancing capabilities. Cisco's innovative DHCP address allocation scheme CNR (Cisco Network Register) it can effectively solve the above problems and support other services such as TFTP and DNS 。
1) distributed design of DHCP Server Cisco D
Two Cisco dhcp cnr servers are deployed on the two core Switches of the network. The two DHCP servers are connected through
Second, LB
LoadBalance is the allocation of load balance to the nodes of the cluster, thus improving the overall throughput capacity. Oracle 10g RAC provides two means to implement the payload, one of which is to assign the user to a different node according to an algorithm by connection balancing, and the other is to spread the application level by service.
Connection
, DNS server, video server, and each real Servers are connected to each other over a high-speed LAN or across a WAN. In a real-world application, Director server can also be the role of real server concurrently.hared storage layer: is a storage area that provides shared storage space and content consistency for all real servers, typically consisting of disk array devices. , in order to provide consistency of content, it is generally possible to share
standby database can share the read load of the production database in peacetime.3. MAAMAA (Maximum availability Architecture) is not an independent third, but a combination of the previous two, to provide the highest availability. RAC clusters are deployed in each room, and data guard is used to synchronize between multiple rooms.High-availability solutions for Oracle+fusionio+dataguardTraditional Oracle's high-availability scenarios must be based o
Let's start with a brief introduction about LVS load balancingLVS (Linux Virtual server) Linux server cluster systemFor high-scalability, high-availability services, load-balanced scheduling solutions for IP tiers and content request distribution, implemented in the Linux kernel, and a set of servers that make up a virtual server for scalable, highly available network servicesLoad
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