RE: Bind9 stops responding for some clients

2019-06-05 Thread Browne, Stuart via bind-users
Congratulations on finding the cause. Sometimes, it's the simplest of things. Stuart From: bind-users [mailto:bind-users-boun...@lists.isc.org] On Behalf Of Gregory Sloop Sent: Thursday, 6 June 2019 12:37 PM To: bind-users@lists.isc.org Subject: Re: Bind9 stops responding for some cl

Re: Bind9 stops responding for some clients

2019-06-05 Thread Gregory Sloop
Thanks for the idea. I did resolve this a day or two ago. The story is; This server was a fairly recent replacement for an older Ubuntu setup. The new server as well as the old one are/were VM's - yet on different VM platforms. The old VM was turned off, and was marked never to start except unl

Re: Bind9 stops responding for some clients

2019-06-05 Thread Gordon Lang
I just randomly spotted this post, and thought I would toss in 2ยข How many nics and how many it's are on the servers? Are the failing clients on the same subnet as the server? -- Gordon A. Lang On Thu, May 30, 2019, 8:10 PM Gregory Sloop wrote: > So, this is a very odd situation and I'm kind

Re: Bind9 stops responding for some clients

2019-05-30 Thread Warren Kumari
On Thu, May 30, 2019 at 8:10 PM Gregory Sloop wrote: > > So, this is a very odd situation and I'm kind of grasping at straws here. > So, I've come to see if any of you have any good straws! > > The setup. > --- > Ubuntu 18.04 LTS is the distro we're running on. > All software is packaged [from the

Re: Bind9 stops responding for some clients

2019-05-30 Thread Gregory Sloop
es are like and whether there's any rate limiting configured in the distributed BIND configuration. Stuart From: bind-users [mailto:bind-users-boun...@lists.isc.org] On Behalf Of John W. Blue Sent: Friday, 31 May 2019 11:47 AM To: bind-users@lists.isc.org Subject: Re: Bind9 stops respondin

RE: Bind9 stops responding for some clients

2019-05-30 Thread Browne, Stuart via bind-users
nfiguration. Stuart From: bind-users [mailto:bind-users-boun...@lists.isc.org] On Behalf Of John W. Blue Sent: Friday, 31 May 2019 11:47 AM To: bind-users@lists.isc.org Subject: Re: Bind9 stops responding for some clients Good job on the amount of troubleshooting work done so far. Next steps should

Re: Bind9 stops responding for some clients

2019-05-30 Thread John W. Blue
Good job on the amount of troubleshooting work done so far. Next steps should be to run tcpdump on the interface for port 53 to see what is happening when an outage is in progress. What you will be looking for specifically is the query packet in and the response packet out. Use the following c