On Tue, Oct 25, 2016 at 12:48 PM, Matt Garman <matthew.garman at gmail.com> wrote: > On Mon, Oct 24, 2016 at 6:09 PM, Larry Martell <larry.martell at gmail.com> wrote: >> The machines are on a local network. I access them with putty from a >> windows machine, but I have to be at the site to do that. > > So that means when you are offsite there is no way to access either > machine? Does anyone have a means to access these machines from > offsite? > >> Yes, the C6 instance is running on the C7 machine. What could be >> mis-configured? What would I check to find out? > > OK, so these two machines are actually the same physical hardware, correct? Yes. > > Do you know, is the networking between the two machines "soft", as in > done locally on the machine (typically through NAT or briding)? Or is > it "hard", in that you have a dedicated NIC for the host and a > separate dedicated NIC for the guest, and actual cables going out of > each interface and connected to a switch/hub/router? I would expect > the former... I don't know, but would also guess the former. > If it truly is a "soft" network between the machines, then that is > more evidence of a configuration error. Now, unfortunately, with what > to look for: I have virtually no experience setting up C6 guests on a > C7 host; at least not enough to help you troubleshoot the issue. But > in general, you should be able to hit up a web search and look for > howtos and other documents on setting up networking between a C7 host > and its guests. That will allow you to (1) understand how it's > currently setup, (2) verify if there is any misconfig, and (3) correct > or change if needed. > >> Yes, that is potential solution I had not thought of. The issue with >> this is that we have the same system installed at many, many sites, >> and they all work fine. It is only this site that is having an issue. >> We really do not want to have different SW running at just this one >> site. Running the script on the C7 host is a change, but at least it >> will be the same software as every place else. > > IIRC, you said this is the only C7 instance? That would mean it is > already not the same as every other site. It may be conceptually the > same, but "under the hood", there are a tremendous number of changes > between C6 and C7. Effectively every single package is different, > from the kernel all the way to trivial userspace tools. Yes, of course it's different at that level. But I was talking about our application software and set up. It is that that I want to keep consistent across deployments. >> netperf is not installed. > > Again, if you can use putty (which is ssh) to access these systems, > you implicitly have the ability to upload files (i.e. packages) to the > systems. A simple tool like netperf should have few (if any) > dependencies, so you don't have to mess with mirroring the whole > centos repo. Just grab the netperf rpm file from wherever, then use > scp (I believe it's called pscp when part of the Putty package) to > copy to your servers, yum install and start testing. Again, no machine on the internal network that my 2 CentOS hosts are on are connected to the internet. I have no way to download anything., There is an onerous and protracted process to get files into the internal network and I will see if I can get netperf in.