Mqtt--linux installation Deployment (CentOS)

OS Environment: CentOS6.5

1. Installation dependent

Yum-y install gcc gcc-c++ openssl-devel c-ares-devel libuuid-devel wget cmake

2, add websocket support for Mosquitto, install text socket library file , unzip

# tar ZXFV libwebsockets-v1.6-stable.tar.gz

　　

3. Running WebSocket

# CD libwebsockets-v1.6-stable# mkdir bulid# CD bulid# cmake. # Make && make install

　　

4, Installation Mosquitto

Download mqtt---mosquitto-1.4.8.tar.gz, unzip

# tar ZXFV mosquitto-1.4.8.tar.gz

　　

5. Modify the Config.mk file to enable the subsequent compiled Mosquitto file support WebSocket

　　

Config.mk file in the mosquitto-1.4.8 directory, change the with_websockets:=no in the Config.mk file to Yes

After saving, execute

# make && make install# ln-s/usr/local/lib/libwebsockets.so.6/usr/lib64/libwebsockets.so.6# groupadd mosquitto# useradd-g Mosquitto Mosquitto

6. Create mosquitto.conf, pwfile files

# cd/etc/mosquitto/

If the directory does not have mosquitto.conf and Pwfile
Perform

# CP Mosquitto.conf.example mosquitto.conf# CP pwfile.example Pwfile

　　

Then modify the file mosquitto.conf,

511 allow_anonoymous True ... 537 Password_file/etc/mosquitto/pwfile

　　

and add it at the end of the document

Port 1883listener 8080protocol websockets

　　

7. Start Mqtt

# mosquitto-c/etc/mosquitto/mosquitto.conf

　　

8. Testing
Open two additional terminals
Terminal One:
? This is actually a subscription to a message with the topic "MQTT". "Mqtt" is the main title, and if a client publishes a message with the subject "MQTT", the terminal will receive the content of the message.

Mosquitto_sub-t Mqtt

　　

Terminal two:
? Here is a message with the topic "MQTT" with the content "Hello Mqtt".

Mosquitto_pub-h localhost-t mqtt-m "Hello Mqtt"

　　

At this point the terminal will receive:hello mqtt

9. Error resolution

During the installation or during the test, you may encounter errors:

Mosquitto_sub:error while loading shared libraries:libmosquitto.so.1:cannot open Shared object file:no such file or di Rectory

Workaround:

# cat/etc/ld.so.conf# echo "/usr/local/lib" >>/etc/ld.so.conf# ldconfig

　　

Mqtt--linux installation Deployment (CentOS)