# OPC UA alternatives (aka Kepserver)? **URL:** \ **Category:** General Discussion\ **Created:** [February 13, 2018, 4:23am UTC](https://forum.inductiveautomation.com/t/opc-ua-alternatives-aka-kepserver/16962 "2018-02-13T04:23:31Z")\ **Posts on this page:** 1\ **Showing post:** 14
**Author:** ![R.Alamsha](https://avatars.discourse-cdn.com/v4/letter/r/e5b9ba/32.png) [@R.Alamsha](https://forum.inductiveautomation.com/u/R.Alamsha)\ **Post date:** [February 16, 2018, 7:09am UTC](https://forum.inductiveautomation.com/t/opc-ua-alternatives-aka-kepserver/16962/14 "2018-02-16T07:09:50Z")
**How to quickly test MQTT with Ignition?:** _Note: To learn and setup MQTT on ubuntu or RPi, please watch the above 2 MQTT tutorials. Thanks._ 1. Install cirruslink MQTT Engine module and activate it. 2. Click the MQTT Engine/settings link on the Ignition web configuration page and add any numer of MQTT servers as shown below. In this case, i have added 2 servers, local ubuntu and cloudmqtt servers. Make sure, you enter your cloudmqtt port number, user name and password as shown in details tab. ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/6/6864893a58af7c4b931e9e9a38c446870c06a99c.png) 3.Click namespace/custom and enter everything for name and # to subscribe for all servers as shown below. 4.RESTART MQTT Engine MODULE. 5.Enter the Ubuntu shell command: mosquitto\_pub -h 192.168.1.109 -p 1883 -t test -m “hello ignition” 6.login to your cloudmqtt page and test it. All topics will automatically come up under “All Providers/MQTT Engine” in your tag browser. ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/9/9f6f1d7b2ece14266dd8ba6c48ee891ff37dd2ba.png) ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/6/63e2df964f5f938987f9e91b45e7ee7d32a6db33.png) ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/7/75bdc1086fd10a4150b4c06026d07dd63d3fd87e.png) I am amazed and speechless to see the power of MQTT. This will push Kepserver out of business very soon. --- _[View the full topic](https://forum.inductiveautomation.com/t/opc-ua-alternatives-aka-kepserver/16962)._