A mail warning for web test.

Stone_ll · Post by **Stone_ll** » Sun Dec 07, 2008 8:20 pm

Now I want to monitor the web URL content by HM.
Such as:It can sent a mail if the URL return 404 or some other erorrs when the HM test a URL http://www.xx.com/index.html.
to be important we have a CDN for the web.and there are two or more nodes.
I want to know which node is error when the URL test's status is bad for the web URL test.such as the mail include the ip address of the node.

hope for your reply.thanks....

KS-Soft · Post by **KS-Soft** » Mon Dec 08, 2008 9:49 am

You need to setup URL test for each node using IP address instead of hostname

Regards
Alex

Stone_ll · Post by **Stone_ll** » Tue Dec 09, 2008 2:07 am

sorry,so many nodes are not allowed to visited by ip address instead of hostname.
I think there is a record for every visit .
It means that the IIS of windows is not set for us to visit hostame by administrator
But it can not sent by HM ?
thanks for your reply !

KS-Soft · Post by **KS-Soft** » Wed Dec 10, 2008 3:14 pm

Not sure I undersatand...
If you cannot request web server using IP address and you can only use hostname and there are several nodes respond to the same hostname, then its impossible to check what node is down by using HTTP/TCP requests.
Te only way I see - use some protcol to request management core (e.g. using WMI requests)...
What exactly Network Load Balancing software do you use? Does it supports WMI or Performance Counter technology? SNMP?

Regards
Alex

Stone_ll · Post by **Stone_ll** » Sun Dec 14, 2008 10:34 pm

KS-Soft wrote:Not sure I undersatand...
If you cannot request web server using IP address and you can only use hostname and there are several nodes respond to the same hostname, then its impossible to check what node is down by using HTTP/TCP requests.

yes,that is right.

Te only way I see - use some protcol to request management core (e.g. using WMI requests)...
What exactly Network Load Balancing software do you use? Does it supports WMI or Performance Counter technology? SNMP?

Network load balancing software?Oh I do not understand what you are say about...Please say it more clearly ? ^_^
Thanks for your reply and supports.

KS-Soft Europe · Post by **KS-Soft Europe** » Mon Dec 15, 2008 3:53 am

Stone_ll wrote:Network load balancing software?Oh I do not understand what you are say about...Please say it more clearly ? ^_^

You mentioned you use CDN for the web. As we understand, CDN is Content delivery network, right? One of the features provided by CDN is load balancing technique, that allows to spread work between two or more computers (IISs in your case). That's why we ask about software/hardware involved in your CDN. We need this information in order to provide you solution you asked about.

In generals case, you may create particular site on each IIS, and create a "URL" test for each IIS, but it requires a lot of work, I think...

Regards,
Max

Stone_ll · Post by **Stone_ll** » Thu Dec 18, 2008 2:38 am

I understand now.
But CDN is provided by CDN company who we pay to .
and I could try to ask them .
otherwise , Can I use a method to find out the load balance technology they use ?

Stone_ll · Post by **Stone_ll** » Thu Dec 18, 2008 2:57 am

additionally　can HM do the http test　and the ping　test all together ?
My means is at the same time ,exactly the second.
So I can find the the domain and　the node ip address .
And the http test 's status is bad ,　HM can send a mail including the　URL and the node ip address .
But I do not know whether it can do according to　my idea.

KS-Soft Europe · Post by **KS-Soft Europe** » Thu Dec 18, 2008 3:59 am

Stone_ll wrote:Can I use a method to find out the load balance technology they use ?

Not sure they allow you to monitor their network from outside. I assume any protocol except HTTP is forbidden by their firewall.

Stone_ll wrote:additionally　can HM do the http test　and the ping　test all together ?

You can try to play with master/dependant relations: http://www.ks-soft.net/hostmon.eng/mfra ... htm#Master

Stone_ll wrote:So I can find the the domain and　the node ip address .
And the http test 's status is bad ,　HM can send a mail including the　URL and the node ip address.

Not sure I understand you. It looks too complicated and not much reliable. I think, you should ask your CDN company how to monitor particular nodes using HTTP protocol only.

Regards,
Max

Stone_ll · Post by **Stone_ll** » Thu Dec 18, 2008 6:24 am

My meaning is two tests.
Take a example,One is the ping test for www.xxx.com or the DNS test,the other is the http get test for www.xxx.com.
I want the two tests to test synchronistically every time ,just as at the same time.
although I may creat single two tests I said former,but they will been not in step . So the two tests must have some relationship ,it is not the relationship of the master and salve test that you said.

Afterward,the two tests work in step . Ping test or DNS test take charge of changing the domain name to IP address ,and http test take charge of checking the web's status.
When the http test's status is bad HM send a mail including the ip address that get by ping or DNS test .

I do not know you understand or not .Sorry for my poor English .
thanks

KS-Soft · Post by **KS-Soft** » Thu Dec 18, 2008 12:37 pm

But CDN is provided by CDN company who we pay to .

Then why you should worry about their nodes, CDN, IP addresses, network traffic balancing??
1) You pay money, they provide service. You check URL using URL or HTTP test, if service does not work, you may complain. Its problem of the company to monitor and maintenance their servers and routers.
2) You would not be able to fix the problem anyway. Am I right?
3) Also monitoring tool should be installed in their network, in such case it will have access to all servers and protocols.
4) Probably they already have monitoring solution. I think they know much more about their servers and how system works. Am I wrong?
5) If "CDN company" does not have monitoring solution yet (I really wonder why?), ask them to join the forum. They can provide information about CDN system, we can provide information about HostMonitor.

additionally　can HM do the http test　and the ping　test all together ?
My means is at the same time ,exactly the second.
So I can find the the domain and　the node ip address .

I don't think this can work. Even if you send 2 requests at the same time, its still 2 different requests, 2 different protocols.
Network Load Balancing software may send ping request to one node and TCP (HTTP) request to another node. Also, are you sure they allow you to ping internal servers?

Regards
Alex

Stone_ll · Post by **Stone_ll** » Sun Dec 21, 2008 1:28 am

Yes，you are right ! They should maintain their own nodes.
But to be more safely we also monitor.
in another word , I cann't monitor the CDN nodes by HM in order to get the ip address when the http test error?

KS-Soft · Post by **KS-Soft** » Sun Dec 21, 2008 12:56 pm

Well, we do not have any idea how that network works, what protocols allowed by firewall, what services are running on the servers.
You should ask administrator of that network.

Regards
Alex

Stone_ll · Post by **Stone_ll** » Mon Dec 22, 2008 8:50 pm

But the software Fiddler2 --- a package analyzer can do this .
can HM do this according to this idea？

KS-Soft · Post by **KS-Soft** » Mon Dec 22, 2008 8:55 pm

can HM do this according to this idea

What exactly idea? Intercept network traffic? No, HostMonitor does not and should not do this.

Regards
Alex