round robin load balancing algorithm

62, Load Balancing cluster introduction, LVS Introduction, LVS scheduling algorithm, LVS NAT mode constructionFirst, load Balancing cluster introductionMain open source software LVs, keepalived, Haproxy, Nginx, etc.The LVS belongs to 4 layer (network OSI 7 layer model), Ngin

balancing algorithm, detection mode and ability of network system condition.1. Load Balancing algorithm1) Round robin (Round Robin): Each request from the network is assigned to the internal server in turn, starting from 1 to N a

Load Balancing algorithm typesRandom--random distributionPolling (Round Robin) --distributes the request sequentially to the server in sequence, starting from 1 to N and then restarting. This equalization algorithm is suitable for all servers in the server group with the sam

...........$IPVSADM -C$IPVSADM -A -t 192.168.147.144:80 -s wlc............. Browser access to 192.168.147.144, multiple visits several times to view the results of differences [[emailprotected] ~]# ipvsadm -lnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 192.168.147.144:80 wlc -> 192.168.0.132:80 Masq 1 0 0 -> 192.168.0.133:80

Introduction to load Balancing clusters? Mainstream open source software LVs, keepalived, Haproxy, Nginx, etc.? where LVs belongs to Layer 4 (Network OSI 7 layer model), Nginx belongs to 7 layer, Haproxy can be considered as 4 layer, also can be used as 7 layerThe Keepalived load balancing function is actually LVS.? LV

: Ensure the same request is distributed to the same RS)#因为添加-p option will affect the test effect, so this parameter is not added here (note: The time cannot be set to 0)$IPVSADM-T 192.168.75.128:80-r 192.168.8.134:80-m-W 1$IPVSADM-T 192.168.75.128:80-r 192.168.8.135:80-m-W 1#-a:=add, adding Rs;-r in NAT Schema: Specify IP;-M for RS: Specify the LVS mode as NAT (Masquerade)#-w:=weight, assigning weightsExecute the script:[Email protected] ~]# sh/usr/local/sbin/lvs_nat.sh#注: There is no error ou

-Xiptables -t nat -A POSTROUTING -s 192.168.133.0/24 -j MASQUERADE#director设置ipvsadmIPVSADM=‘/usr/sbin/ipvsadm‘$IPVSADM -C$IPVSADM -A -t 192.168.147.144:80 -s wlc -p 3$IPVSADM -a -t 192.168.147.144:80 -r 192.168.133.132:80 -m -w 1$IPVSADM -a -t 192.168.147.144:80 -r 192.168.133.133:80 -m -w 1Nat Mode effect testInstallation of Nginx on both RSSet two RS homepage, make a distinction, that is to say, directly curl two RS IP, get different resultsBrowser access 192.168.142.147, multiple visits se

balancing needs to investigate the processing ability of the processing node, and its basic basis is to predict the future processing speed according to the previous processing speed of the processing node. Load Balancing algorithm A load-

Introduction to load Balancing clustersMain open source software LVs, keepalived, Haproxy, Nginx, etc.The LVS belong to 4 layer (network OSI 7 layer model), Nginx belongs to 7 layer, Haproxy can be considered as 4 layer, can also be used as 7 layerKeepalived Load balancer is actually the LVS LVS this 4-layer load balan

The design of the balance algorithm directly determines the performance of the cluster in load balancing, the design of the poor algorithm, will lead to the load imbalance of the cluster. The main task of the general balancing

Title Index Reason for traceability Export structure Scheduling algorithm Problem handling Reason for traceabilityAccording to colleague feedback: education Cloud Platform Server external service request imbalance, one server external service volume is much larger than other servers, the problem of locking occurs in the export Load Balancer Scheduler scheduling

server list is not changed.4. Weighted round-robin methodDifferent back-end servers may not have the same machine configuration and current system load, so they have varying compression capabilities. Configure a high, low-load machine with higher weights to handle more requests, and configure low, high-load machines,

Random allocation, hash consistency distribution, minimum number of connections, primary and standby allocationRandom, rotation, consistent hash, master standby, 51547416Minimum number of links allocated, similar to (third-party load policy, fair, based on short response time priority allocation, 51702900)51702900↑Nginx Load balancer is implemented through the upstream module, with built-in implementation o

The Spring Cloud Gateway integrates Zuul and fuses, so gateways are inherently load-balanced and fused. Therefore, the load balancing algorithm of Spring cloud is the load balancing algorithm