Tags: haproxy mariadb pacemaker CorosyncThe highly available solution keepalived just provides the simplest high-availability features, and the truly advanced features keepalived difficult to complete. Openais specifications provide a complete solution, but a lot of the weight of many features considered comprehensive, very detailed, to understand these we can be more in-depth understanding of the complete system of high availability, when encounterin
Shell practice: use shell to automatically receive and load the haproxy configuration file, so that the configuration takes effect. haproxy automatically receives the configuration and loads 002. Introduction to the background receiving configuration process: 0031. It is a while 1 background process 0042. Currently, it is a 30 s check. Is there any new configuration? If yes, continue. If not, rest for 30 s.
Tags: mysql cluster haproxyFirst, prepare1. Prepare the serverBuild a MySQL cluster system with 2 nodes and build haproxy+mysql cluster (MySQL cluster) system using 6 servers
node Configuration Instructions
Node
The corresponding IP and port
Haproxy Load Balancer (1) CentOS 6.3
1.1.1.11
Management node (1) CentOS 6.3
1.1.1.30
SQ
I. Preparation 1. prepare the server to establish the MySQLCLuster system with two nodes, and use six servers to establish Haproxy43; mysqlcluster (MySQL Cluster) system node configuration description the IP address and port of the node Haproxy server load balancer (1) centos I. preparations
1. prepare the server
Establish a MySQL CLuster system with two nodes and build a Haproxy + mysql cluster (MySQL CLu
Haproxy + mysqlcluster (MySQL cluster) Configuration
I. Preparation
1. Prepare the server
Establish a MySQL CLuster system with two nodes and build a Haproxy + mysql cluster (MySQL CLuster) system with six servers
Node configuration instructions
Node
Corresponding IP address and port
Haproxy Server Load balancer (1) centos 6.3
1.1.1
Redis Redundancy Scheme (keepalived, HAProxy, Redis Sentinel)
If you're looking for a redis redundancy solution, I've found the following scenario, and I think I can try this out.
"highly Available Redis Cluster | Simplicity is the keynote of all true elegance"
Initially, it was considered to be built using pacemaker, because the Redis author launched Sentinel's scenario, so this article uses the Sentinel scenario.
Software list and
Implementation requirements:Using Haproxy To do load balancing, manually add or remove node server information in the configuration file, it is more troublesome. Collect the information that needs to be registered to Consul as the Haproxy node server through Registrator, and then register to Consul Key/value . Consul-template go to Consul key/value to read the information and then automatically modify the
################### #全局配置信息 ############################## #参数是进程级的, usually associated with the operating system (OS) #########GlobalMaxconn 20480 #默认最大连接数Log 127.0.0.1 local3 #[err warning Info Debug]Chroot/var/haproxy #chroot运行的路径UID #所属运行的用户uidGID #所属运行的用户组Daemon #以后台形式运行haproxyNbproc 1 #进程数量 (multiple processes can be set to improve performance)Pidfile/var/run/haproxy.pid #haproxy的pid存放路径, the user who
Web schemaDescribe the purpose of each server:1, Haproxy to achieve the back-end Web server load Balancing2, keepalived to achieve the high availability of haproxy3, Apache static page access to implement4. Dynamic page access for Aoache dynamicsWhat is keepalived?Keepalived is a routing software written in C. The main goal of this project are to provide simple and robust facilities (capability) for loadbalancing and high-availability to Li Nux system
Recently the company's IIS server is always down, their knowledge of operation and maintenance is very short, listen to some of the introduction decided to bite the bullet, set up a haproxy load to the back end of two IIS. Here's a summary of experience!First install haproxy with yum command This is very simple, say the process! Install the GCC compiler first# yum Install gcc# wget http://
Haproxy Proxy to build a highly available Web clusterStatus code for HTTP protocol response:200:ok301: Redirect404:not found403:forbidden501:internal ErrorHAProxy:1, it's working principle is proxy agent. After the client sends the request to Haproxy, Haproxy sends the request to the Web server for the user, the Web server responds to the
In order to compare the effects of hproxy and nginx load Balancing, respectively on the test machine (the following experiments are tested on a single machine, that is, the load machine and the back end of the machine are on a computer) do the two load balancing environment, and their respective capture packet analysis.The following are the results of the packet capture analysis under these two load balancing environments:1) haproxy experimental recor
Document directory
About SSL certificates
Others
Install haproxy by the way:
Some practical problems and solutions
Recently, Stunnel is used as a transparent proxy, and haproxy is used as an SSL solution. Stunnel is added between the user and the original reverse proxy, so that the user and Stunnel can use SSL, the real Web after Stunnel does not need to bear the HTTPS overhead.
Record the configu
Comparison of haproxy lvs nginx Load Balancing
For the software that implements load balancing, let's take a look at it in detail. In terms of performance and stability, LVS is the best, basically reaching 60% of the performance of F5 hardware equipment, and other 10% are a little difficult.
However, the configuration is also the most troublesome because of LVS, and the Health Check requires configuring Ldirector. Other
participate in the loadThe larger the weight defaults to 1.weight, the greater the weight of the load.Max_fails: The number of allowed requests failed defaults to 1. Returns the error Proxy_next_upstream module definition when the maximum number of times is exceededFail_timeout:max_fails after a failure, the time of the pause.Backup: All other non-backup machines request backup machines when down or busy. So this machine will be the lightest pressure.
Third,
Haproxy is a free and open code software written in C that provides high availability, load balancing, and TCP and HTTP-based application proxies that can run on most major Linux operating systems.This experiment with three servers, one server installation haproxy implementation scheduling, another two servers to build Nginx to provide Web services, a client test access.The server needs to change the networ
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