Front-facing conditionsUse the Publish subscription feature of SQL Server for read-write separation and create multiple read libraries.Load balancing in this article is for multiple read libraries.Test environmentVMware 10 64-bitWindows Server R2SQL Server 2008CentOS 6.6Haproxy 1.5Virtual machine configuration(1) Virtual machine 1: Install CentOS and install Haproxy. IP is: 172.16.1.1. As a load balancer.(2) Virtual Machine 2: Install Windows Server R
Haproxy provides high availability, load balancing, and proxies based on TCP and HTTP applications to support virtual hosts, a free, fast, and reliable solution. Haproxy is especially useful for Web sites that are heavily loaded, which typically require session maintenance or seven-tier processing. Haproxy is running on the current hardware and can support tens o
Recently, the company had a project where users worried that a single machine could not afford the most users, and they required to use the application cluster. We designed the application cluster architecture based on the application situation.
The architecture diagram is as follows:
650) this. width = 650; "style =" border-bottom: 0px; border-left: 0px; margin: 0px; border-top: 0px; border-right: 0px "title =" logical architecture "border =" 0 "alt =" logical architecture "src =" http://www.bk
Next blog Address http://lee90.blog.51cto.com/10414478/1825478In the previous blog post, we used only one slave node.in the actual production environment, we must have multiple slave The node is responsible for reading the database. Let's say we have a well-configured slave , IP to be 192.168.2.15 . So now the situation is:Master1 : 192.168.2.13Master2 : 192.168.2.14VIP : 192.168.2.100Slave1 : 192.168.2.11Slave2 : 192.168.2.15Web Server: 192.168.2.11Haproxy the installation configurationdemo us
HAProxy performance in high concurrency
After the xunqi message gateway server is migrated from Beijing to the Wuxi data center, after a text message is sent, only about 60% of the text message status reports are received.
After understanding the business logic, you can view the statistical status on the stats page of haproxy as follows:
In the red circle, we can see that the maximum number of sessions
GlobalLog127.0.0.1local0 chroot/var/lib/haproxy #chroot运行路径 pidfile/var/run/haproxy.pid #haproxy Process pid file Maxconn65535#默认最大连接数, you need to consider ulimit-N Limit user haproxy group Haproxy daemon #以后台形式运行harpoxy tune.s SL. default-dh-param 2048 SSL-server- Verify none stats socket/var/lib/
This is my entire process of log analysis for haproxy in the unit.We have been in the maintenance ES cluster configuration, and did not put a set of processes including the collection end of the code, all their own once, and the online collection of logs when we generally use the logstash, but the industry many people say logstash whether it is performance and stability is not very good, The advantage of Logstash is the simple configuration, this time
The configuration of HAProxy is divided into five parts. Of course, these components are not mandatory and can be selected as needed. Global: The parameter is process-level, usually related to the Operating System (OS. These parameters are generally set only once. If the configuration is correct, you do not need to modify defaults again: to configure the default parameter, which
HAProxy Configuration
The
I. haproxy
HaproxyProvides high availability, Server Load balancer, and proxy Based on TCP and HTTP applications, and supports Virtual Hosts. It is a free, fast, and reliable solution.Haproxy is especially suitable for websites with extremely high loads, which usually require session persistence or layer-7 processing. Haproxy runs on the current hardware and supports tens of thousands of concurrent connecti
the content of the specified container ip,-v refers to the local configuration of the Config.ini file, and then map it into the NDB_MGMD container Config.ini configuration content is as follows [NDBD DEFAULT]noofreplicas=2datamemory=80mindexmemory=18mDatadir=/usr/local/mysql/data [NDB_MGMD DEFAULT]Datadir=/var/lib/mysql-cluster [NDB_MGMD]Nodeid=1hostname=192.166.0.2 [NDBD]nodeid=10hostname=192.166.0.10 [NDBD]nodeid=11hostname=192.166.0.11 [MYSQLD]nodeid=100hostname=192.166.0.100 [MYSQLD]Nodeid=
, often problems, rather than simple and stable. In the enterprise, more than 90% of the failure, from the demand change. It could be a bug, a human error, a schema design problem, and so on. Front-end load balancing equipment is the most important, in the software selection must be fully considered, to meet the premise of business, as far as possible to reduce complexity, improve serviceability.Project four: Implement a high-availability architecture based on
we typically run into a business scenario like this:b host and C database in the same intranet, a host cannot directly access the C database, we can build the agent on the B host let a access C database, we use Haproxy to do this thingCENTOS7 EnvironmentMySQL Self-installingHaproxy installation Configuration yum install-y haproxy Configuration haproxy:Vim/etc/haproxy
Today, a colleague came to me and said that their new website ulinux.img.bkjia.com.cn could not be accessed. The Code returned from the page was a test machine. My first response was a DNS resolution problem and dig was normal, no request for the header ulinux.img.bkjia.com.cn is sent when you log on to the backend web packet capture service. I caught a lot of results on the testing machine that my colleagues said.
At this time, the haproxy rule shou
"Install Haproxy under CentOS"sudo yum install HaproxyEditing a configuration file vim/etc/haproxy/haproxy.cfg#---------------------------------------------------------------------# Example configuration for a possible web Application. See the# full configuration options online.## http://haproxy.1wt.eu/download/1.4/doc/configuration.txt##------------ -----------
from:http://www.oschina.net/news/53070/haproxy-1-5-0After 4 years of unremitting efforts,HAProxy 1.5.0 finally released!Compared to version 1.4, the 1.5 version includes many new features and performance improvements:
Native SSL support for SNI/NPN/ALPN and OCSP stapling;
Support IPV6 and UNIX sockets;
Full HTTP keep-alive to better support of NTLM and improved efficiency in static farms;
http/1.1
This was done before Percona XtraDB Cluster (Configuration See linkhttp://hans925.blog.51cto.com/542170/1607157)Now with Haproxy to Percona XtraDB cluster do load balancing, machine or those two machines, (originally do load balancing three machines, but personal notebook run two virtual machine on a bit card, so it used two). The haproxy was installed on the first Percona.HaproxyOs:ubuntu 14.04 Server ip:1
: This article mainly introduces [nginx] the most comprehensive nginx tutorial on the Internet (nearly 100 articles). If you are interested in PHP tutorials, refer to it. Nginx basics
1. nginx installation
2. nginx compilation parameters
3.
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