How to monitor Real Time System Statistics using Web-Vmstat

Real Time System Statistics Monitoring By Using Web-Vmstat

Web-VMstat is a very simple web application program that provides a real time system information usage from CPU to RAM, Swap and input/output information in HTML format. Web vmstat application is written in Java and HTML.

To Download the web-vmstat package

Download the web-vmstat package by using the following command.

[root@linuxhelp Desktop]# wget https://github.com/joewalnes/web-vmstats/archive/master.zip
--2016-05-04 22:07:54--  https://github.com/joewalnes/web-vmstats/archive/master.zip
Resolving github.com... 192.30.252.130
Connecting to github.com|192.30.252.130|:443... connected.
HTTP request sent, awaiting response... 302 Found
.
.
.
Saving to: “ master.zip” 

    [    < =>                                                              ] 135,179     71.7K/s   in 1.8s    

2016-05-04 22:07:59 (71.7 KB/s) - “ master.zip”  saved [135179]

Now Extract the Downloaded package by using the unzip command.

[root@linuxhelp Desktop]# unzip master.zip 
Archive:  master.zip
a9646c6f6837f02404251fed067160e4ac504a2a
   creating: web-vmstats-master/
 extracting: web-vmstats-master/.gitignore  
.
.
.
  inflating: web-vmstats-master/web/js/sugar-1.4.1.min.js  
  inflating: web-vmstats-master/web/stats.css  
  inflating: web-vmstats-master/web/stats.js

[root@linuxhelp Desktop]# cd web-vmstats-master/
[root@linuxhelp web-vmstats-master]# ls
LICENSE  README.md  run  screenshot.png  web

To Create the directory in /opt location

Create the directory in /opt location and move the web directory into that directory.

[root@linuxhelp web-vmstats-master]# mkdir /opt/web-stat
[root@linuxhelp web-vmstats-master]# cp -r web/* /opt/web-stat/

To Download and install the websocketd streaming program

Execute the following command to download and install the websocketd streaming program.

[root@linuxhelp ~]# wget https://github.com/joewalnes/websocketd/releases/download/v0.2.9/websocketd-0.2.9-linux_amd64.zip
--2016-05-04 22:17:15--  https://github.com/joewalnes/websocketd/releases/download/v0.2.9/websocketd-0.2.9-linux_amd64.zip
Resolving github.com... 192.30.252.121
.
.
.
Length: 2211144 (2.1M) [application/octet-stream]
Saving to: “ websocketd-0.2.9-linux_amd64.zip” 

100%[=================================================> ] 2,211,144    279K/s   in 21s     

2016-05-04 22:17:40 (102 KB/s) - “ websocketd-0.2.9-linux_amd64.zip”  saved [2211144/2211144]

Now Extract the downloaded package by using unzip command.

[root@linuxhelp ~]# unzip websocketd-0.2.9-linux_amd64.zip
Archive:  websocketd-0.2.9-linux_amd64.zip
 extracting: .built                  
  inflating: websocketd              
  inflating: INSTALL                 
  inflating: README.md               
  inflating: LICENSE

Now copy the websocketd file into following location.

[root@linuxhelp ~]# cp -r websocketd /usr/local/bin/

Now run the websocketd program by using the following command

[root@linuxhelp ~]# websocketd --port=8080 --staticdir=/opt/web-stat/ /usr/bin/vmstat -n 1
Wed, 04 May 2016 22:31:03 +0530 | INFO   | server     |  | Serving using application   : /usr/bin/vmstat -n 1
Wed, 04 May 2016 22:31:03 +0530 | INFO   | server     |  | Serving static content from : /opt/web-stat/
Wed, 04 May 2016 22:31:03 +0530 | INFO   | server     |  | Starting WebSocket server   : ws://:8080/
Wed, 04 May 2016 22:31:03 +0530 | INFO   | server     |  | Serving CGI or static files : http://:8080/

--port To connect HTTP protocol

--staticdir path for all Web-Vmstat web files are hosted.

/usr/bin/vmstat -n Linux Vmstat command which updates its status every second.

Manage WebSocket process as a system daemon create a init service file on /etc/init.d/ path with the following content

[root@linuxhelp ~]# vim /etc/init.d/web-stat

To Give the execute permission

[root@linuxhelp ~]# chmod +x /etc/init.d/web-stat

Now run the websocket process by executing below command.

[root@linuxhelp ~]# /etc/init.d/web-stat start
Starting webvmstats process...
Wed, 04 May 2016 22:48:02 +0530 | INFO   | server     |  | Serving using application   : /usr/bin/vmstat -n 1
Wed, 04 May 2016 22:48:02 +0530 | INFO   | server     |  | Serving static content from : /opt/web-stat/
Wed, 04 May 2016 22:48:02 +0530 | INFO   | server     |  | Starting WebSocket server   : ws://:8080/
Wed, 04 May 2016 22:48:02 +0530 | INFO   | server     |  | Serving CGI or static files : http://:8080/
Wed, 04 May 2016 22:48:02 +0530 | FATAL  | server     |  | Can' t start server: listen tcp :8080: bind: address

Now assign port 8080 to access the web-stat and also add this to firewall configuration.

[root@linuxhelp ~]# iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPT

Now restart the iptables service and web-stat service

[root@linuxhelp ~]# service
iptables restart iptables: Setting chains to policy ACCEPT: filter mangle na[ OK ]
iptables: Flushing firewall rules: [ OK ]
iptables: Unloading modules: [ OK ]
iptables: Applying firewall rules: [ OK ]

[root@linuxhelp ~]# service web-stat restart

Finally open the browser use the following URL to display web-Vmstat system statistics.

http://your-server-ip:8080