wrr 101

secure networks.#Auth 11 CRC#2 sha1 hi!#3 MD5 hello! Change permission to 600 Chmod 600 authkeys 3. Modify the haresources file and add content in the last line. Node1 ipaddr: 192.168.0.20./ 24/eth0: 0 ldirectord Now, heartbeat configuration is complete. Configure ldirectord Checktimeout = 3Checkinterval = 1# Fallback = 127.0.0.1: 80Autoreload = YesLogfile = "/var/log/ldirectord. log"Logfile = "local0"Emailalert = "liuguan269@163.com"Emailalertfreq= 3600Emailalertstatus = allQuiesc

the configured parameters, search for the virtual node closest to the hash in the hash ring, and the corresponding server serves as the backend machine of the request. Therefore, when the weighted field is equal to 0, the number of virtual nodes and the number of IP addresses are equal. Therefore, you can directly modulo the hash value against the total number of IP addresses. If weighted is not equal to 0, the number of virtual nodes and the number of IP addresses are different. Therefore, the

Round Robin Scheduling; Minimal connection scheduling; Weighted Least connection Scheduling; Based on connections with the least locality; Local least join with replication; Target address hash scheduling; Hash scheduling of source addresses; Round-robin algorithm (RR): requests are scheduled to different servers in a sequential loop. The most specific method of this algorithm is simple implementation, the polling algorithm assumes that all servers have the same processing capability. The sched

Lvs nat and dr modes, lvsnatdr I. nat mode of lvs: Web: 192.168.3.124 is sent to the backend realserver by accessing the reverse proxy 192.168.8.123: 80 of nginx. Lvs end eth0: dip 192.168.3.123 eth0: 0 vip 192.168.8.123 Realserver1 end eth0: 192.168.3.128 echo "hello, 192.168.3.128"> 1.html Realserver2 end eth0: 192.168.3.129 echo "hello, 192.168.3.129"> 1.html Operations on lvs: Ipvsadm-A-t 192.168.8.123: 80-s wrr Ipvsadm-a-t 192.168.8.123: 80-r 1

Http://linux.chinaunix.net/techdoc/net/2009/07/21/1125256.shtml # Modprobe ip_vs LVS + keepalived for high-availability clusters Source: chinaunix blog Date: 2009.07.21 (comments in total) I want to comment Operating System Platform: centos5.2Software: LVS + keepalivedLVS + keepalived IntroductionLVSLVS is short for Linux virtual server, which is a virtual server cluster system. This project was establishe

Theory and configuration instructions: Http://www.cnblogs.com/edisonchou/p/4281978.html LVS: Dr mode WRR load: Topology KA1 lamp-1 PC ------ | Ka2 lamp-2 VIP: 192.168.14.100 KA1: 192.168.14.134 KA1: 192.168.14.135 Lamp-1: 192.168.141 Lamp-2: 192.168.142 Install software: LVS: yum install ipvsadm -yrpm -qa ipvsadm KA: yum install keepalived -y Lamp: Configuration RS binding VIP: ip addr add 192.168.14.100/32 Dev lo label lo: 1 route add-host 192.168

install ipvsadm 3: ipvsadm command complete 1 implement management cluster service: ipvsadm-a-t 192.168.0.10: 80-s RR 2 implements Management Cluster RealServer: Ipvsadm-a-t 192.168.0.10: 80-r 192.168.100.7-m Ipvsadm-a-t 192.168.0.10: 80-r 192.168.100.9-m Step 2Configure RS1 and rs2 take RS1 as an example. 1. Network correctness route add default GW 192.168.100.10. If not, use this command to modify the gateway or setup for network settings. 2. Prepare a web server (such as httpd) and p

51Priority100Advert_int 1Authentication {Auth_type passAuth_pass 1111}Virtual_ipaddress {10.10.10.250}}Virtual_server 10.10.10.250 80 {Delay_loop 6Lb_algo WRRLb_kind DrNat_mask 255.255.255.0Persistence_timeout 50Protocol TCPReal_server 10.10.10.140 80 {Weight 1Http_get {URL {Path/keep.htmlDigest eff5bc1ef8ec9d03e640fc4370f5eacd}}Connect_timeout 3Nb_get_retry 3Delay_before_retry 3}Real_server 10.10.10.150 80 {Weight 1Http_get {URL {Path/keep.htmlDigest eff5bc1ef8ec9d03e640fc4370f5eacd}}Connect_t

load balancer, the load balancer implements the request by modifying the destination IP address of the request, thus enabling the load balancer to be forwarded.Advantages: Better performance.Disadvantage: The bandwidth of the load balancer becomes a bottleneck.5, Data link layer load balancing . After the request arrives at the load balancer, the load balancer does load balancing by modifying the requested MAC address, unlike the IP load balancer, which returns the customer directly after the r

, especially when uploading large files at once.4, theIP layer load Balancing . After the request arrives at the load balancer, the load balancer implements the request by modifying the destination IP address of the request, thus enabling the load balancer to be forwarded.Advantages: Better performance.Disadvantage: The bandwidth of the load balancer becomes a bottleneck.5, Data link layer load balancing . After the request arrives at the load balancer, the load balancer does load balancing by m

performance, especially when uploading large files at once.4. IP layer load Balancing . After the request arrives at the load balancer, the load balancer implements the request by modifying the destination IP address of the request, thus enabling the load balancer to be forwarded.Advantages: Better performance.Disadvantage: The bandwidth of the load balancer becomes a bottleneck.　　　　5. Data Link Layer load balancing . After the request arrives at the load balancer, the load balancer does load b

through the scheduler.)650) this.width=650; "src="/e/u261/themes/default/images/spacer.gif "style=" Background:url ("/e/u261/lang/zh-cn/ Images/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>LVS Scheduling algorithm: Round call scheduling (Round Robin) (abbreviated RR), weighted round call (Weighted Round Robin) (WRR), least link (least connection) (LC), weighted least link (Weighted least Connections) (WLC), etc.;2. Lv

address of the request, so that the load is balanced. Advantages: Better performance. Disadvantage: The bandwidth of the load balancer becomes the bottleneck. 5, Data link layer load balance. After the request arrives at the load balancer, the load balancer achieves load balancing by modifying the requested MAC address, which, unlike IP load balancing, returns directly to the customer after the request has been made to the server. Without the need to go through the load balancer. 2, the second