Greetings,
I have one centos server for network monitoring.
there are remote devices which are connected through ADSL lines and hence Dynamic IPs
Q1. Is there any tool which is capable of handling this type of situation? Q2. Is there a workaround for this problem
Regards
Rajagopal
Rajagopal Swaminathan wrote:
Greetings,
I have one centos server for network monitoring.
there are remote devices which are connected through ADSL lines and hence Dynamic IPs
Q1. Is there any tool which is capable of handling this type of situation? Q2. Is there a workaround for this problem
One approach would be to establish a VPN network to the locations using private static addresses with monitoring (and perhaps administration) traffic routed through it, but the details would depend on the hardware available. Most snmp monitoring tools will be confused by frequently changing IPs anyway, though.
Or maybe implementing dyndns if you can
Regards,
Juan Carlos
El 21 de dic de 2009, 3:09 p.m., "Les Mikesell" lesmikesell@gmail.com escribió:
Rajagopal Swaminathan wrote: > Greetings, > > I have one centos server for network monitoring. > >... One approach would be to establish a VPN network to the locations using private static addresses with monitoring (and perhaps administration) traffic routed through it, but the details would depend on the hardware available. Most snmp monitoring tools will be confused by frequently changing IPs anyway, though.
-- Les Mikesell lesmikesell@gmail.com
_______________________________________________ CentOS mailing list CentOS@centos.org http://lists...
Thanks for the reply
2009/12/21 Juan Carlos Díaz Fernández juan.carlos.diaz@ign-solutions.com:
Or maybe implementing dyndns if you can
This sounds very interesting and it seems GNUDIP is one such. but it seems too dated.
it is possible for me to run a dyndns service on a static IP. but can you provide a bit more of gory details about where is it available for centos, and the such.
Yes I am using our friend goole while I am typing this for finding some answer
Alternatively, it there a possibility of installing some agent and getting the MAC address of one of the server behind the router. First a diagram
central location (main monitoring -- Centos box0+monitoring server) | | (Internet) | | +--link1adsl-- Remote1 (dynamic IP) | | +--link2adsl-- Remote2 (dynamic IP) | (and so on...)
In each remote I have a centos box behind the router serving a bunch of desktops.
Is there a possibility that I can install an agent which will contact the central montoring server? (No $$$ here please, as free as in free beer/bread applies in addition to freedom)
BTW it seems there are two type of monitoring tools: Type-1. uses snmp only Type-2. user agents
Is it possible to monitor a link based on the MAC of the centos server sitting behind?
Zabbix seems to be priced
Honestly I am absolutely confused as to which I should choose as it will be maintained by people who may not know what command line is (Sorry!!)
Apologies for too many questions.
I think somebody mentioned NMS to be complex beasts .. I being a vegetarian am finding it all the more daunting
Thanks in advance
Rajagopal
Hello,
2009/12/22 Rajagopal Swaminathan raju.rajsand@gmail.com
Thanks for the reply
2009/12/21 Juan Carlos Díaz Fernández <juan.carlos.diaz@ign-solutions.com
: Or maybe implementing dyndns if you can
This sounds very interesting and it seems GNUDIP is one such. but it seems too dated.
In the past I had a dyndns mounted using bind + dhcpd. You can see an example here:
http://www.howtoforge.com/fedora_dynamic_dns
Also, you can use an external dyndns service like dyndns.org and ddclient to update info.
Regards,
Juan Carlos
Greetings,
2009/12/22 Rajagopal Swaminathan raju.rajsand@gmail.com
again,
Thanks for the reply
In the past I had a dyndns mounted using bind + dhcpd. You can see an example here:
The dhcp server is not under my control, far from it is from different ISPs
Also, you can use an external dyndns service like dyndns.org and ddclient to update info.
Is is possibile to run on'e own dyndns service?
BTW does GNUDIP does the same? assuming it is hosted on a public IP and all the remote location point to this IP as DNS server?
Please pardon my ignorance... I know about OS, HA and the bits, but well this networking beast... I need some more handholding perhaps
Thanks again for prompt reply
Regards,
Rajagopal
Hello,
The dhcp server is not under my control, far from it is from different ISPs
Uh! Sorry, I was not thinking about it.
Also, you can use an external dyndns service like dyndns.org and ddclient
to
update info.
Is is possibile to run on'e own dyndns service?
Yes, I see the tool you mention, GNUDIP can do the job. The development is stopped, but if it works, you can try it!
Yes, you must install GNUDIP server on your fixed public IP machine and clients on the other machines.
Regards,
Juan Carlos
Rajagopal Swaminathan wrote:
Alternatively, it there a possibility of installing some agent and getting the MAC address of one of the server behind the router. First a diagram
central location (main monitoring -- Centos box0+monitoring server) | | (Internet) | | +--link1adsl-- Remote1 (dynamic IP) | | +--link2adsl-- Remote2 (dynamic IP) | (and so on...)
In each remote I have a centos box behind the router serving a bunch of desktops.
Is there a possibility that I can install an agent which will contact the central montoring server? (No $$$ here please, as free as in free beer/bread applies in addition to freedom)
Why not run Openvpn on the remote and central centos boxes to create a big private network, using unique IP ranges for each remote? This can be used for other management purposes or could be firewalled to just permit snmp. For what you describe, all you need is a route to the routers, and this would give you a route to the 'inside' interface. If you want to allow it, it will also allow remote access to everything behind the router.
BTW it seems there are two type of monitoring tools: Type-1. uses snmp only Type-2. user agents
Your router is probably only going to have snmp, and accessing it from the inside interface will work to report the interface usage of all interfaces.
Is it possible to monitor a link based on the MAC of the centos server sitting behind?
Probably not, but you can vpn-tunnel through it, and openvpn will work fine through NAT and with one end having a dynamic address.
Zabbix seems to be priced
Honestly I am absolutely confused as to which I should choose as it will be maintained by people who may not know what command line is (Sorry!!)
Apologies for too many questions.
I think somebody mentioned NMS to be complex beasts .. I being a vegetarian am finding it all the more daunting
I'm partial to opennms - and have used it in somewhat similar circumstances (generally static IP's, but using a central monitor from the private side through tunnels). The one thing you need for this to work is unique IP addresses throughout, though. Most monitor tools will be tied to IP addressing and will be confused if each location NATs to the same range.
Greetings,
On Tue, Dec 22, 2009 at 7:07 PM, Les Mikesell lesmikesell@gmail.com wrote:
Rajagopal Swaminathan wrote:
Why not run Openvpn on the remote and central centos boxes to create a big private network, using unique IP ranges for each remote? This can be used for other management purposes or could be firewalled to just permit snmp. For what you describe, all you need is a route to the routers, and this would give you a route to the 'inside' interface. If you want to allow it, it will also allow remote access to everything behind the router.
Well taken
Your router is probably only going to have snmp, and accessing it from the inside interface will work to report the interface usage of all interfaces.
Well taken
Probably not, but you can vpn-tunnel through it, and openvpn will work fine through NAT and with one end having a dynamic address.
Well taken and am working towards that (With you know what ... see below)
I'm partial to opennms - and have used it in somewhat similar circumstances (generally static IP's, but using a central monitor from the private side through tunnels). The one thing you need for this to work is unique IP addresses throughout, though. Most monitor tools will be tied to IP addressing and will be confused if each location NATs to the same range.
Apologies. But Zabbix is settled for time being as it eventually be a government property and they have more or less standardised on LAMP. And Zabix seems to be a very promising tool.
But Zabbix 1.8 does not seem to do a simple ping test on an IP. Maybe I am facing the wrong end of it....
Anybody with experience on Zabbix???
Thanks again and Regards with best of season's greetings,
Rajagopal
On Mon, Dec 21, 2009 at 8:50 AM, Rajagopal Swaminathan < raju.rajsand@gmail.com> wrote:
Greetings,
I have one centos server for network monitoring.
there are remote devices which are connected through ADSL lines and hence Dynamic IPs
Q1. Is there any tool which is capable of handling this type of situation? Q2. Is there a workaround for this problem
I think it really depends on the type of monitoring you'd like to do and the type of tool you're trying to use now. For example, we use Nagios to monitor our systems. With Nagios, you could use passive checks. This is where the programs that monitor your server run locally on the server and submit results to the central monitoring server. The central Nagios server can alert based on the results it receives or based on the fact that it hasn't received results for a period of time.
Greetings,
On Mon, Dec 21, 2009 at 8:27 PM, Jake jakepaulus@gmail.com wrote:
I think it really depends on the type of monitoring you'd like to do and the type of tool you're trying to use now. For example, we use Nagios to monitor our systems. With Nagios, you could use passive checks. This is where the programs that monitor your server run locally on the server and submit results to the central monitoring server. The central Nagios server can alert based on the results it receives or based on the fact that it hasn't received results for a period of time. --
Thanks, This is one path I intend to investigate further..
Regards
Rajagopal
Greetings,
Perhaps ntop?
Gosh! answer for a person handling hundreds of servers and PB of data!!! I am blessed indeed. :)
Yes I am right now trying to get my claws into it just few minutes back I yum-med it in to my system. saw some graphs...
The key issue here is dynamic IP addresses
Initial requirements are just to show whether the ADSL is up and the avereage transfer /hour /day etc. and some minor details inside.
Thanks and regards
Rajagopal
I personal use zabbix ... On all the servers ( Windows, Linux ) with dynamic IP I use dyndns ...
Gabe
www.techshrinks.com
-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Rajagopal Swaminathan Sent: Monday, December 21, 2009 8:50 AM To: CentOS mailing list Subject: [CentOS] Monitoring Dynamic IPs using Some network monitoring tool
Greetings,
I have one centos server for network monitoring.
there are remote devices which are connected through ADSL lines and hence Dynamic IPs
Q1. Is there any tool which is capable of handling this type of situation? Q2. Is there a workaround for this problem
Regards
Rajagopal _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Greetings,
On Mon, Dec 21, 2009 at 8:48 PM, Gabriel Rosca missnebun@gmail.com wrote:
I personal use zabbix ... On all the servers ( Windows, Linux ) with dynamic IP I use dyndns ...
I just tried to configure, make install zabbix server and agent on a centos box
But I seem to miss the front end URL mentioned anywhere
There are no directory entries under /var/www/html for zabbix...
The index.php seems to by under frontend/ph in the unzipped directory...
no go yet...
any help appreciated
Regards
Rajagopal
-
Gabriel Rosca -
Jake -
Juan Carlos Díaz Fernández -
Les Mikesell -
nate -
Rajagopal Swaminathan