Haproxy for windows (it is very easier to transfer others server) QuickStart(use quiet mode) haproxy.exe -f config.json -q These 3 files is required for running haproxy.exe cyggccs-1.dll cygwin1.dll. Installing HAProxy CentOS 8 As a fast-developing open-source application HAProxy available for install in the CentOS default repositories might not be the latest release. To find out what version number is being offered through the official channels enter the following command. Sudo yum info haproxy. In Ubuntu 14.04 installing haproxy through apt-get install haproxy installs haproxy 1.4, while 1.5 is in the repository. How can I install haproxy 1.5 (or the newest) without resorting to specific.
Installation¶
First of all, you have to install the HAProxy plugin (os-haproxy) from theplugins view.
First Step: Configure Backend Servers¶
On the “Servers” page, click + to open a dialog to create a new server.A server consist of a name, IP and port.Create an entry for every Server you want to load balance.
For a HTTP Backend, configure like this:
Name | Name of this server |
Description | Keep it empty |
FQDN or IP | Enter the IP of your Server |
Port | Port of the Server |
SSL | Keep the default (disabled) |
Verify SSL Certificate | Keep the default (checked) |
SSL Verify CA | Keep the default (empty) |
Second Step: Configure a Backend¶
Now, as we have the backend services,we can build a backend by combining them to groups ofservers, which will serve the same service.For example if you are hosting a Webservice and want toscale horizontally, every server in the cluster will bea “Server”, but they will be combined to a so called“Backend”, so HAProxy can load balance between them.
To create a new Backend, click the +.
And fill out the form:
Note
The “Balancing Algorithm” field is important to care about as manyweb applications depend on a state.For example, if your web application stores session data on a localdisk, you may get some trouble when using an algorithm like RoundRobin. In such a case, the request of the same client always needsto be sent to the same backend servers.For example by default PHP stores session data in files while Rubyon Rails stores session information in a cookie by default.Please look up your web framework documentation for information howthis is handled. Consider writeing files as problematic as well ifthere is no shared storage.
Enabled | Enable the Backend (checked) |
Name | Enter a name for the Backend |
Description | Enter an optional description |
Mode | Select the mode HTTP as this is an HTTP backend |
Balancing Algorithm | Select an load balancing algorithm |
Servers | Select the previously configured servers |
Third Step: Configure Conditions¶
In this step an Condition will has to be created which is later used to decidewhich traffic from a frontend belongs to which backend.
To create a new Condition, you have to go to “Rules & Checks -> Conditions”and create one by clicking the + button:
(Picture is from Previous Version but it still looks as good as the same)
In the open modal dialog, the following form will show up:
Name | Choose a name for this Condition |
Description | Keep it empty or choose one for your information |
Expression | Select “Host contains” |
Negate condition | Keep it unchecked |
Value | Enter the (partial) hostname to compare |
Click “Save changes”.
Fourth Step: Configure an Rule¶
As promised in the previous step, the Conditions will be used.A Rule can use multiple conditions to decide which Rule is going to be used.To create a new Rule, you have to go to “Rules & Checks -> Rules”and create one by clicking the + button:
(Picture is from Previous Version but it still looks as good as the same)
A form dialog opens and we can fill it out like the following:
(Picture is from Previous Version but it still looks as good as the same)
Note
You can map multiple Hostnames to the same Backend by adding multipleACLs and choosing the logical operator “OR”.
Name | Choose a name for this Action |
Description | You can add an optional description |
Test Type | Keep it at the default (“IF”) |
Select ACLs | Select the ACLs to be used |
Logical operator | Keep the default (“AND”) |
Choose action | Choose “Use Backend” |
Use Server | Keep the default (“none”) |
Fifth Step Configure a frontend¶
Now its nearly done. The only thing that needs to be configured for HAProxyis a Public Service.A Public Service is a a group of bound ports which are used for incoming connections.From this Public Service we need to know which backend the request will routed to.For this, the previously configured action is needed.If you got multiple domains on one IP, you differentiate them with rules!Don’t create multiple Public Services.
To create a new Public Service, click the + button:
(Picture is from Previous Version but it still looks as good as the same)
The following modal dialog opens and the frontend can be set up:
Warning
If you configure a port that is already in use, the configuration testwill be successful but the start of HAProxy will fail silently.Please ensure that the used port is free - especially if the numberconflicts with the web configuration of OPNsense.
General Settings¶
Enabled | Checked |
Name | Use any name |
Description | You may keep it empty |
Listen Address | Enter one or more host:port combinations, use 0.0.0.0:80 for HTTP via IPv4 |
Type | Choose HTTP / HTTPS |
Default Backend | Keep the default of “None” |
Advanced settings¶
Enbable the X-Forwarded-For-header so the backend will know the real IP ofthe client.
Actions (ACLs)¶
Here you have to activate the previously configured actions, so HAProxyis going to operate based due the rules/conditions.
All other Options¶
Keep all other options at the default
Sixth step: Enable and start¶
This is the last step - on the General tab, we will enable the serviceafter a config test.
For that, the “Enable HAProxy” checkbox needs to be checked.
On this screen, check “Enable HAProxy” and click “Apply”.If everything went OK HAProxy will start.Now you need to configure firewall rules for accessing your HAProxy instance.
I've been developing an App for most of the summer. It's using a few backend services so in production I use HAProxy in front of them.
The latest service uses socket.io and Node.JS, I couldn't get it going because the local web server runs on a different port than the Node JS server (naturally). Due to the 'Same origin policy' socket.io JS needs to run on the same port (and host). So I installed HAProxy to mimic how everything would run in Prod.
<!-- more -->First thing first - Using the Cygwin setup.exe install GCC and G++
Download HaProxy http://haproxy.1wt.eu/
Next extract the HaProxy archive you downloaded, I was in my home directory (/home/courtney).
Go into the extracted folder
javascriptcd haproxy.x.y.z
Where .x.y.z was the version number. Now compile:
If no error occurred then install
Once installed you need a HaProxy Config file. I'm using 1.4 so docs are here: http://cbonte.github.com/haproxy-dconv/configuration-1.4.html . You should have a look here http://haproxy.1wt.eu/#docs to find your specific version of the docs.
Once you have a HaProxy config file fire up the process using:
javascript/usr/local/sbin/haproxy.exe -f haproxy.cfg
If like me you're using Node or whatever else (WebSockety) with HaProxy then a good place to start is http://stackoverflow.com/questions/4360221/haproxy-websocket-disconnection/4737648#4737648
Haproxy 2.0 Install
This post is short and shody but its more of a reference for me in the future I'll probably have to do it again.