Once the changes have been made, save the file & restart the haproxy service to implement the changes, $ sudo systemctl restart haproxy Lastly we have mentioned the server addresses for both SMTP servers. Other load balancing methods that can be used are Weighted round robin, Dynamic round robin algorithm, Least connection algorithm, Source. back_smtp & mode for the transmission will be tcp load balancing method to be used is ‘ roundrobin‘.
In this section, we have established a name for backend i.e. front_smtp & have asked to take all the request from port 25 with bind parameter, laslty we have mentioned the backend section with the name ‘back_smtp’ where all the requests will be distributed. Here we have defined a name for frontend i.e. Here most of the options have been set by default, main things to change here are ‘ frontend‘ & ‘ backend‘ sections. Now the make the changes, add the following frontend‘ & ‘ backend‘ section at the end of the file. $ sudo cp /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg-org ‘/etc/haproxy/haproxy.cfg’ and then make the configuration changes for load balancing the two SMTP servers,īefore making the changes, take backup of its configuration file using cp command. We will now make the changes to main HAProxy configuration file i.e. The IP address for haproxy server is 192.168.1.100. Load balancing a Mail server with HAProxyįor this example, we will be using two SMTP servers with the IP adresse 192.168.1.10 & 192.168.1.20 respectively.
For purpose of this guide, we will configure HAProxy to load balance the requests from a mail server & a web server. To validate the haproxy service status, run following $ sudo systemctl status haproxy
#XNCONVERT UBUNTU 20.04 INSTALL#
Haproxy service starts automatically when we install haproxy package. To verify the haproxy version, run $ haproxy -v' $ sudo apt update$ sudo apt install haproxy -y Note: At the time of writing this article, HAProxy 2.6 is available via PPA. Now, run following apt command to install haproxy $ sudo add-apt-repository ppa:vbernat/haproxy-2.6 -y So to install latest version, enable HAProxy PPA, run $ sudo apt install software-properties-common HAProxy package is available in the default package repositories but it is not the latest and stable version. $ sudo reboot Step 2) Install latest HAProxy Once all the updates are installed, reboot the system once.
#XNCONVERT UBUNTU 20.04 UPDATE#
Login to Ubuntu 20.04 system and install all the available updated using beneath apt command, $ sudo apt update But Waterfox should be able to run properly JS in config.js.Without any further delay, let’s deep dive into HAProxy installation steps.
#XNCONVERT UBUNTU 20.04 CODE#
This code is in config.js in installation folder (example of using config.js: )īut in Waterfox G5 this code doesn't work from config.js: "ReferenceError: Cc is not defined" error in Browser Console appears.Īs workaround, I wrote and installed tiny bootstrapped addon that run code on startup. So that chrome.manifest is applied, following code must be run on browser startup: let cmanifest = Ci.nsIFile) Ĭ(Ci.nsIComponentRegistrar).autoRegister(cmanifest) I override some css in omni.ja by directive "override" in chrome.manifest (in chrome folder). Pref("_enabled", false) Īre needed (including third line) in /defaults/pref/config-prefs.js.
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