Tag：load balancing
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Time：2021-11-9
When testing the HTTP service, if we forget to close the process and try to start a new service process again, we will encounter an error message similar to the following: $ go run main.go listen tcp :8000: bind: address already in use This is because by default, the operating system does not allow us to open sockets with the same source address and port. […]
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Time：2021-11-4
catalogue 1、 LVS load balancing 2、 Basic introduction to load balancing LVS 3、 Architecture of LVS 3.1. Load balancer layer 3.2. Server array layer 3.3 shared storage layer 4、 Implementation principle of LVS 5、 Working principle of LVS 6、 LVS related terms 7、 Nat mode – network address translation 8、 How NAT mode works 9、 […]
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Time：2021-10-27
VIP: 192.168.1.100 Master: 192.168.1.238 Slave: 192.168.1.239 Real IP:RIP1: 192.168.1.235 RIP2: 192.168.1.236 The following are the installation steps Step 1: install haproxydownload http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.18.tar.gz#tar zxvf haproxy-1.4.18.tar.gz #make TARGET=linux26 #make install Step 2: install IPVSAccording to the introduction of the official website of IPVS, different versions of the kernel are applicable to different versions of IPVS. http://www.linuxvirtualserver.org/software/ipvs.html2.6.18 applicable […]
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Time：2021-10-20
Today, we use go to implement a simple load balancing algorithm. Although it is simple, we still need to write it. 1. The first is the server information package balance type Instance struct { host string port int } func NewInstance(host string, port int) *Instance { return &Instance{ host: host, port: port, } } func […]
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Time：2021-3-20
This article mainly introduces a simple understanding of several scheduling algorithms of nginx seven layer load balancing, and introduces them in great detail through the example code, which has a certain reference learning value for everyone’s learning or work, and friends who need it can refer to it Nginx is a lightweight high-performance web server, […]
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Time：2020-12-11
1. Load balancing Ocelot can achieve load balancing among the available downstream services of each route, which enables us to select downstream services to process requests more effectively. Load balancing type: Leastconnection determines which request is to be processed according to the number of new requests being processed by the new service. The algorithm state […]
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Time：2020-11-5
There is no incremental backup mechanism for MySQL database, but it provides a master-slave backup mechanism, which writes all the data of the master database to the backup database at the same time. Realize the hot backup of MySQL database. The following are the specific steps of master-slave hot backup: Suppose that the master server […]
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Time：2020-11-1
This article mainly introduces the nginx forward and reverse proxy and load balancing and other functions to achieve configuration code examples. The article introduces the example code in detail, which has a certain reference learning value for everyone’s study or work, and friends in need can refer to it System environment: VirtualBox Manager Centos6.4 nginx1.10.0 […]
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Time：2020-6-22
1. Node planning: There are two ways: 1 master + many slaves, many to master. The second way shares the master node and is easy to expand and reduce. Container name container IP address mapping port number service operation mode Redis-master1 172.1.50.11 6391->6379,16391->6379 master Redis-master2 172.1.50.12 6392->6379,16392->6379 master Redis-master3 172.1.50.13 6393->6379,16393->6379 master redis-slave1 172.1.30.11 6394->6379,16394->6379 […]
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Time：2020-4-13
In order to improve the high availability of the system, we can bind two or more network cards into a virtual network card, and use the same IP address to ensure that when one link is broken, the other link can be started at any time to improve the stability of the system. Enable dual […]
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Time：2020-2-26
A series of articles briefly describe the five common working modes of LVS, and then mainly describe the working principle of LVS Ipvsadm and IPVS LVS is responsible for four levels of balanced load scheduling. When we want to define the scheduling rules of a cluster, we need to use a management tool, which isipvsadm。 […]
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Time：2020-2-22
Summary This paper mainly shares some technical principles that need to be understood when trying to pressure test oceanbase. These suggestions can help users to do some tuning of oceanbase, and then quickly find the best performance for the business in combination with the test program. Because oceanbase has many parameters and flexible deployment form, […]
