kemp load balancer support

LVS is a short name for Linux virtual server, the Linux web, is a free software project initiated by Dr. Zhangwensong and is now part of the Linux standard kernel. Prior to the Linux2.4 kernel, the LVS had to be recompiled to support the LVS function module, but since the Linux2.4 kernel, the various functions of LVS have been built-in, without any patching of the kernel, and the functions provided by LVS can be used directly. The goal of using LVS te

exceeds the normal packet forwarding speed. However, because it is implemented by hardware, it is not flexible enough to handle load balancing of several of the most standard application protocols, such as HTTP. Currently, Server Load balancer is mainly used to solve the problem of insufficient server processing capability. Therefore, the advantages of high netw

, redundancy is also necessary. This involves the design of efficient dB, which will not be repeated here. 2.1.2 why data splitting What is data splitting? A brief description and explanation are provided. Readers may wonder why data splitting is required? A mature and stable database like Oracle is enough to support the storage and query of massive data? Why do we still need data slicing? Indeed, Oracle databases are mature and stable, but the high c

configurationApache can meet the above two requirements. Let's first discuss how to implement load balancing. Assume that the domain name of an Apache server is www.a.com. You must first enable several modules of Apache:Httpd. conf code Loadmodule proxy_module modules/mod_proxy.so Loadmodule proxy_balancer_module modules/mod_proxy_balancer.so Loadmodule proxy_http_module modules/mod_proxy_http.so Mod_proxy provides the proxy server function. mod

First, load Balancing introduction Main open source software LVs, keepalived, Haproxy, Nginx and so on; The LVS belongs to 4 layer (network OSI 7 layer model), Nginx belongs to 7 layer, Haproxy can be considered as 4 layer, can be used as 7 layer; Keepalived load balancing function is in fact LVS; LVS This 4-layer load

, you can also consider suchTechnology: Use a proxy server to evenly forward requests to multiple servers to achieve load balancing. 3. address translation gateway Server Load balancer supports the address translation gateway of Server Load balancer. You can map an external

16 CPU to calculate, if you enter 5, that means that cpu0 and CPU2 are involved in.You'll also notice that there's a smp_affinity_list in the catalogue, and he's a decimal expression.Two configurations are interlinked, Smp_affinity_list uses the decimal, compared to the smp_affinity hexadecimal, more readable.echo 3,8 >/proc/irq/31/smp_affinity_listecho 0-4 >/proc/irq/31/smp_affinity_listUse Watch to view the effect after switching[Email protected] ~]# watch-n 2 "cat/proc/interrupts |grep ETH"W

disadvantage of Nginx.2. backend server health check only supports Port detection, but does not support url detection. Direct Session persistence is not supported, but can be solved through ip_hash. LVS: implements a high-performance and high-availability server load balancer using Linux kernel clusters. it has good Scalability, Reliability, and Manageability ).

log cannot be written to the problem that eventually causes the entire application to crash.3. Logging to logging server you can use a logging software, such as a syslog, to write all the logs to a central server. Although this method requires more configuration, he also provides the most robust solution. PHP Load Balancer Instance If you want to use load balanc

run multiple operating systems such as Linux,unix,mac/os and Windows nt/2000. Support for the vast majority of TCP and UDP protocolsFlexibility: No modifications to the client and server are requiredPerformance: supports millions of concurrent connections with maximum throughput of the system close to 10GBITS/SReliability: Already used in many large, critical sitesSoftware License: Based on GPL license releaseLVS Cluster system has been formally used

certificate verification probably failed due to a problem with the certificate (it might be expired, or the name might not match the domain name in the URL).If you‘d like to turn off curl‘s verification of the certificate, use the -k (or --insecure) option.Explanation: This issue was flagged as untrusted because the certificate was issued by us, but was actually successfully configured.7. Access using the browserFirst in the Windows system to add the hosts to resolve the aming.com, if you can n

the virtual IP, the backend server gateway does not point to the load balancer, and Lvs-tun requires the backend service to support IPIP unpacking.　　Some operating systems are not supported.　　2) from the throughput point of view, lvs-dr highest, Lvs-nat lowest.　　3) In terms of ease of configuration, Lvs-nat is minimal, lvs-dr and Lvs-tun are more complex. It is

the same server, which further improves the efficiency of the backend cache server. Nginx does not support url_hash. To use this scheduling algorithm, you must install the nginx hash package. In the HTTP upstream module, you can use the server command to specify the IP address and port of the backend server, and set the status of each backend server in the Server Load