Now update your packages:-

# apt-get update
To verify your newly added debian.unofficial.org repository do the following (taken from http://debian-unofficial.org/faq.html):-

apt-get install debian-unofficial-archive-keyring

or

aptitude install debian-unofficial-archive-keyring

gpg --keyserver subkeys.pgp.net --recv-keys 0xFDB8D39A
gpg --armor --export 0xFDB8D39A | apt-key add -

or

wget http://ftp-master.debian-unofficial.org/other/openpgp/archive-key-2008.asc -O - | apt-key add -

To verify your newly added backports.org repository do the following (taken from http://www.backports.org/dokuwiki/doku.php?id=instructions):-

apt-get install debian-backports-keyring

or

gpg --keyserver hkp://subkeys.pgp.net --recv-keys 16BA136C
gpg --export | apt-key add -

or

wget -O - http://backports.org/debian/archive.key | apt-key add -

You will need to install Java and SNMP to get full functionality, to do this:-

# apt-get install sun-java6-jre
# apt-get install snmp snmpd openipmi lsb-base

SAS/5iR RAID Controllers

If you are running a machine with an SAS/5iR or similar RAID controller (like a PE860) you will need to take the following steps:-

Install mpt-status:-

# apt-get install mpt-status

Now make sure it loads correctly, this can be easily done via:-

# mpt-status --autoload

The Dell OMSA should now be able to query the RAID controller.

Installation

Now install the package:-

# apt-get install dellomsa

The following packages will also get installed (if they are not already):-

gcc-3.3-base libbeecrypt6 libglib1.2 libglib2.0-0 libneon25
libopenipmi0 librpm4 libsensors3 libsnmp-base libsnmp9 libsqlite3-0
libstdc++5 libsysfs2 libxml2 openipmi rpm

You will get the following warning:-

WARNING: The following packages cannot be authenticated!
dellomsa
Install these packages without verification [y/N]?

Just type y, hit return and trust that nothing nasty is gonna happen

You may encounter this error while installing (well, I did anyway):-

Unpacking dellomsa (from .../dellomsa_5.4.0-1_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/dellomsa_5.4.0-1_i386.deb (--unpack):
failed in buffer_write(fd) (9, ret=-1): backend dpkg-deb during `./opt/dell/srvadmin/jre/lib/charsets.jar': No space left on device
dpkg-deb: subprocess paste killed by signal (Broken pipe)
rm: cannot remove `/etc/ld.so.conf.d/dell-omsa.conf': No such file or directory
Errors were encountered while processing:
/var/cache/apt/archives/dellomsa_5.4.0-1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

It is basically moaning about not having enough space, the package attempts to write to /opt so all I did to resolve this was to move /opt to a partition with more space and symlink it back like so:-

# cd /
# mv opt /home/
# ln -s /home/opt opt

Now just re-run the install command:-

# apt-get install dellomsa

Configuration

Web Management Interface:-

To install the Web Management interface follow these instructions (taken directly from https://subtrac.sara.nl/oss/omsa_2_deb/wiki/FAQ):-

The IWS webserver enables you to read the same information that the omreport command supplies in a nice web interface. You can start IWS from the /etc/init.d directory, currently we don't support automatic startup.

Manually start the webserver:

/etc/init.d/dsm_om_connsvc start

To automatically start the webserver on boot:

/usr/sbin/update-rc.d dsm_om_connsvc start 20 2 3 4 5 . stop 19 0 1 6 . >/dev/null

You can login to the webserver using a local account on port 1311, for example:

https://your-machine.net:1311

Before you can log in to the WMI you need to edit /opt/dell/srvadmin/iws/config/iws.ini and make some changes:-

# vim /opt/dell/srvadmin/iws/config/iws.ini

Change username and password to something other than admin/admin.  Now you will be able to login to the interface using your system root username and password (I know its all a bit odd but if/when I find an explanation I will update this section).

SNMP:-

First you need to configure /etc/snmp/snmpd.conf.  The easiest way to do this is by running snmpconf from command line:-

# snmpconf

Make sure that you set a read/write community from your local network.  When it has been written out you should get something like this (bear in mind I have removed all comments to keep it simple):-

syslocation  Yourserverlocation

syscontact  user@yourdomain.com rwcommunity  yourcommunityname 192.168.0.0/24

com2sec readonly  default         yourcommunityname
com2sec readwrite default         yourcommunityname
group MyROSystem v1        paranoid
group MyROSystem v2c       paranoid
group MyROSystem usm       paranoid
group MyROGroup v1         readonly
group MyROGroup v2c        readonly
group MyROGroup usm        readonly
group MyRWGroup v1         readwrite
group MyRWGroup v2c        readwrite
group MyRWGroup usm        readwrite
view all    included  .1                               80
view system included  .iso.org.dod.internet.mgmt.mib-2.system
access MyROSystem ""     any       noauth    exact  system none   none
access MyROGroup ""      any       noauth    exact  all    none   none
access MyRWGroup ""      any       noauth    exact  all    all    none
smuxpeer .1.3.6.1.4.1.674.10892.1

To ensure that the OMSA SMUX works ok I found that I had to edit /etc/default/snmpd:-

# vim /etc/default/snmpd

And change SNMPDOPTS  to look like this (thanks to the guys on this list http://ubuntuforums.org/archive/index.php/t-473880.html):-

SNMPDOPTS='-Lsd -Lf /dev/null -u snmp -p /var/run/snmpd.pid'

Now restart the snmpd service:-

# /etc/init.d/snmpd restart

Now enable SNMP in OMSA:-

# /etc/init.d/dataeng enablesnmp

Restart OMSA

# /etc/init.d/dataeng restart

Testing:-

The easiest way to test this is to use snmpwalk:-

# snmpwalk -v 1 -OS -c yourcommunityname youripaddress .1.3.6.1.4.1.674.10892.1

The .1.3.6.1.4.1.674.10892.1 OID refers to the Dell Openmanage MIBs.

Firewall

If you are running an iptables firewall on your Linux Debian box (which, lets face it, is usually a good idea), then you will need to open the following ports:-

SNMP: 161 TCP/UDP
OMSA Web interface: 1311 TCP

So using IPTABLES you can just add these entries into your firewall config file (which may or may not be /etc/rc.local), change 192.168.0.0/24 to reflect your network address range:-

#Allow incoming port 161 (tcp/udp) SNMP
/sbin/iptables -A INPUT -p tcp -s 10.100.0.0/24 --dport 161 -m state --state NEW -j ACCEPT
/sbin/iptables -A INPUT -p udp -s 10.100.0.0/24 --dport 161 -m state --state NEW -j ACCEPT