dns round robin load balancing

monitoring. For example: miimon=100, then the system every 100MS monitoring link connection status, if there is a line that does not pass to anotherA line; The value of mode indicates the mode of operation, he has a total of 0,1,2,3 four modes, commonly used for 0, 12 kinds.mode=0 indicates that the load balancing (round-robin) is balanced, and both NICs are wor

Bind two network cards, share one IP, realize the redundancy effect. In fact, there are 7 types of bindings for Linux dual NICs: The mode=0 indicates that load balancing (round-robin) is balanced, and both NICs work. mode=1 says Fault-tolerance (active-backup) provides redundancy, working in a master-slave way, which means that only one NIC works by

not respond, and the DNS cache time is longer, even if the removal of DNS server resolution does not take effect immediately, another problem load imbalance, because it does not reflect the health and performance of the individual servers, At the same time, the DNS cache causes the parsing to be on the same server. 2.

General scenarios and application scenarios of load balancing in summaryPolling schedulingTo request scheduling different servers in order of polling; When implemented, the server is generally weighted; this has two benefits: Performance differences for servers can be assigned different loads; When a node needs to be removed, it is only necessary to set its weight to 0; Advantages: Simple

# cd/usr/local/nginx/sbin/ #/nginx. View Port 1433: #lsof: 1433 Four, test # telnet 10.0.1.201 1433 V. Using the SQL Server Client tool test VI. implementation principle of TCP load Balancingwhen Nginx receives a new client link from the listening port, it immediately executes the routing algorithm, obtains the service IP that specifies the connection required, and then creates a new upstream connection

Use Apache as Web Proxy The apusic application server can integrate with Apache in the following two ways:4.9.1. HTTP Proxy The mod_proxy_http module provided by Apache can be used to integrate with the apusic application server, and the apusic application server does not require any settings. Mod_proxy_http provides the proxy HTTP Request function. Supports HTTP/0.9, HTTP/1.0, and HTTP/1.1 standards. Configuration in standalone EnvironmentPerform the following configuration in % apache_home

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), Nginx belongs to 7 layer, Haproxy can be consider

sending of certain requests.(4) Create the workers. properties file under % Apache %/CONF.The content is:# Define list of workers that will be used# For mapping requestsWorker. List = loadbalancer, node1, node2# Define node1# Modify the host as your host IP or DNS name.Worker. node1.port = 8009Worker. node1.host = 192.168.80.13Worker. node1.type = ajp13Worker. node1.lbfactor = 1Worker. node1.redirect = node2# Define node2# Modify the host as your hos

In the Internet Distributed system, many services are data storage-related, mass access, direct access to storage media is not resistant, need to use Cache,cache cluster load balancing algorithm becomes an important topic, here to the existing load balancing algorithm to some summary.BTW: Although the cache

client, which greatly reduces the data size. generally, the value of gzip_comp_level does not differ much in terms of performance. Set it to 4-5. simply increasing it is meaningless, just a waste of CPU cycles.You can also reduce the file size by using some JavaScript and CSS reduction tools, but these are not very relevant to nginx, so I believe you can get more information through Google.Category: nginx tags: nginx Server Load balancer July 17, 201

I. lb-Server Load balancer A distributor is needed in a server Load balancer cluster. It is called Director, which is located on the middle layer of multiple servers, select a server group from the following server group based on internal locking rules or scheduling methods to respond to requests. The distribution method is based on an algorithm. Ii. Ha-High Availability High Availability, as its name impli

advantages can still be retained, and the advantages of its syntax, as well as the rapid development of efficiency, will still be a place for it. But is it not possible to implement these large distributed systems under the Windows platform? I believe this question has been widely discussed, but at least I don't see a clearer, complete case. With these questions, I decided to upgrade my machine and build a highly scalable distributed Web site from start to finish under the Windows platform. My

# Modify the host as your host IP or DNS name.worker.node1.port=8009worker.node1.host=172.18.49.183Worker.node1.type=ajp13Worker.node1.lbfactor=1worker.node1.connection_pool_timeout=600#worker. node1.connection_pool_size=500#worker. node1.connection_pool_minsize=250Worker.node1.socket_timeout=5# Define Node2# Modify the host as your host IP or DNS name.worker.node2.port=8009worker.node2.host=172.18.49.184Wo

1, the Linux cluster is divided into three main categories (high-availability cluster, load-balanced cluster, scientific computing cluster) (only load Balancing cluster is described below)Load Balancer cluster (load Balance Cluster)Load