On 12/14/2021 12:51 PM, Kendrick Hernandez (kendrick.hernan...@umbc.edu)
wrote:
>
> On Fri, Dec 10, 2021 at 6:25 PM Jeffrey E Altman
> wrote:
>
> Do you know what the issued DNS queries were for?
>
> We believe they were triggered by requests for /afs/.htaccess, as
> these web servers have it
On Fri, Dec 10, 2021 at 6:25 PM Jeffrey E Altman
wrote:
> On 11/29/2021 1:11 PM, Kendrick Hernandez (kendrick.hernan...@umbc.edu)
> wrote:
>
> We were able to narrow the problem down to DNS timeouts from an internal
> DNS server that had reached its limit for NF connection tracking. Once that
> l
On 11/29/2021 1:11 PM, Kendrick Hernandez (kendrick.hernan...@umbc.edu)
wrote:
> We were able to narrow the problem down to DNS timeouts from an
> internal DNS server that had reached its limit for NF connection
> tracking. Once that limit was increased, the issue went away.
> Along with some forwa
Hi all,
Thanks for all the replies and info!
We were able to narrow the problem down to DNS timeouts from an internal
DNS server that had reached its limit for NF connection tracking. Once that
limit was increased, the issue went away.
Along with some forwarded insights from the folks at CMU and
On 11/10/2021 3:27 PM, Kendrick Hernandez (kendrick.hernan...@umbc.edu)
wrote:
> Hi all,
>
> We host around 240 departmental and campus web sites (individual afs
> volumes) across 6 virtual web servers on AFS storage. The web servers
> are 4 core, 16G VMs, and the 4 file servers are 4 core 32G VMs.
Hi Kendrick,
While I don't have specific advice for you, I'll make a few high-level
points:
- most of the community knowledge about tuning, both for fileservers and
cache managers, has been recorded in various workshop presentations over
the years. That should include what parameters to tune
Hi all,
We host around 240 departmental and campus web sites (individual afs
volumes) across 6 virtual web servers on AFS storage. The web servers are 4
core, 16G VMs, and the 4 file servers are 4 core 32G VMs. All CentOS 7
systems.
In the past week or so, we've encountered high-load on the web s
