SUNScholar/Disaster Recovery/System Monitor/Server

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Introduction

• This wiki help page assumes that you have used the three system setup procedures to install an Ubuntu server with DSpace software.
• It is assumed that you will be using the same server for monitoring and backup. To setup munin to gather client statistics, follow the procedure below.

Add a firewall rule to allow the server to get the stats:

ufw allow 4949

To install munin, type the following:

apt-get install munin

To enable Munin on the Apache2 web server, type the following

Please note: This is only when using Ubuntu 14.04 and higher.

a2enconf munin

service apache2 restart

Add the clients to the /etc/munin/munin.conf file as follows.

• Open the file for editing

sudo mcedit /etc/munin/munin.conf

• Add one of the following for each client to be monitored:

 [%hostname-of-client%]
    use_node_name yes
    address %ip-address-of-client%

---

NANO Editor Help

CTL+O	= Save the file and then press Enter
CTL+X	= Exit "nano"
CTL+K	= Delete line
CTL+U	= Undelete line
CTL+W	= Search for %%string%%
CTL+\	= Search for %%string%% and replace with $$string$$
CTL+C	= Show line numbers

More info = http://en.wikipedia.org/wiki/Nano_(text_editor)

---

Example Config

# a simple host tree
[archive.bib.sun.ac.za]
    address 127.0.0.1
    use_node_name yes

[bib.sun.ac.za]
    address 146.232.128.182
    use_node_name yes

[ark.bib.sun.ac.za]
    address 146.232.125.93
    use_node_name yes

[neo.bib.sun.ac.za]
    address 146.232.72.143
    use_node_name yes

[dev.bib.sun.ac.za]
    address 146.232.125.194
    use_node_name yes

[lib.sun.ac.za]
    address 146.232.128.184
    use_node_name yes

[web.lib.sun.ac.za]
    address 146.232.129.132
    use_node_name yes

[etd.sun.ac.za]
    address 146.232.128.164
    use_node_name yes

[ez.sun.ac.za]
    address 146.232.129.75
    use_node_name yes

[ir.sun.ac.za]
    address 146.232.128.173
    use_node_name yes

[ir1.sun.ac.za]
    address 146.232.66.15
    use_node_name yes

[ir2.sun.ac.za]
   address 146.232.128.171
   use_node_name yes

Setup the munin server

sudo munin-check

Wait for about 5 to 10 minutes for munin to gather data and then check out the stats as follows.

Open a web browser and type the following in the address bar:

http://%hostname-of-monitoring-server%/munin

You should get a page like this:

Troubleshooting

• http://munin-monitoring.org/wiki/MuninTroubleshooting

References

• http://www.ubuntugeek.com/install-munin-monitoring-tool-on-ubuntu-14-04-server.html