[Platformone] AWS Access Slowdowns

[Dean Lystra]

I had Dino change "useDNS" to no in /etc/ssh/sshd_config, restarted the
service, then ssh, but it didn't seem to help.

On Mon, Dec 9, 2019, 4:24 PM Taylor Biggs <taylor at redhat.com> wrote:

> Often I'll see this because SSH likes to reverse-DNS lookup people before
> they get all the way logged in.  So you might have a DNS lookup issue going
> on (just look at the output of "w" command).
>
> Thanks,
> Taylor
>
> ----
> Taylor Biggs
> taylor at redhat.com
> 850-449-2220
>
>
>
> On Mon, Dec 9, 2019 at 5:15 PM Dean Lystra <dlystra at redhat.com> wrote:
>
>> This behavior only occurs when they are not in the same subnet. We
>> attempted connections from another EC2 in 10.10.0.0/20 and they were
>> connecting instantly.
>>
>> On Mon, Dec 9, 2019, 4:13 PM Adrian Nunez <adrian.nunez at bylight.com>
>> wrote:
>>
>>> Ok. I'm in the Blue Jeans channel. Slow EC2 SSH is usually from a
>>> service running on the EC2
>>>
>>> Get Outlook for Android <https://aka.ms/ghei36>
>>>
>>> ------------------------------
>>> *From:* Dean Lystra <dlystra at redhat.com>
>>> *Sent:* Monday, December 9, 2019 5:12:04 PM
>>> *To:* Adrian Nunez <adrian.nunez at bylight.com>
>>> *Cc:* Mark Nissley <mnissley at redhat.com>; Jonathan Rickard <
>>> jrickard at redhat.com>; platformONE at redhat.com <platformONE at redhat.com>
>>> *Subject:* Re: [Platformone] AWS Access Slowdowns
>>>
>>>
>>> [EXTERNAL EMAIL]
>>> Connections between instances in the staging VPC are slow when they are
>>> in different subnets. Any instance in 10.10.0.0/20 hangs for a minute
>>> when a ping or SSH is attempted to a server in 10.10.96.0/20.
>>>
>>> On Mon, Dec 9, 2019, 4:06 PM Adrian Nunez <adrian.nunez at bylight.com>
>>> wrote:
>>>
>>> Call me. What EC2's?
>>>
>>> Get Outlook for Android <https://aka.ms/ghei36>
>>>
>>> ------------------------------
>>> *From:* Mark Nissley <mnissley at redhat.com>
>>> *Sent:* Monday, December 9, 2019 5:04:15 PM
>>> *To:* Jonathan Rickard <jrickard at redhat.com>
>>> *Cc:* Adrian Nunez <adrian.nunez at bylight.com>; Goss, Andrew [Semper
>>> Valens Solutions (SVS)] <andrew.goss at accenturefederal.com>;
>>> platformONE at redhat.com <platformONE at redhat.com>
>>> *Subject:* Re: [Platformone] AWS Access Slowdowns
>>>
>>>
>>> [EXTERNAL EMAIL]
>>> Just wanted to add that we are blocked on this right now. We continue to
>>> work it, but could use a call from Andrew or Adrian to Dino at 848-203-1809
>>> at your early convenience!
>>>
>>>
>>> Mark NISSLEY, PMP, CSM, LEAN
>>>
>>> PROGRAM MaNAGER & SR technical Project Manager
>>>
>>> North American Consulting, Public Sector
>>> <https://www.redhat.com/>
>>>
>>> M: 850-530-3234
>>>
>>> <https://www.redhat.com/>
>>>
>>> *Scheduled Training: October 14-18*
>>>
>>>
>>> On Mon, Dec 9, 2019 at 3:42 PM Jonathan Rickard <jrickard at redhat.com>
>>> wrote:
>>>
>>> Adrian / Andrew,
>>>
>>> It was reported that there's some significant slowness while sshing into
>>> the EC2's - would either of you be able to take a look?
>>>
>>> Dino Arachchi and Dean Lystra are running point on this.
>>>
>>> Thanks!
>>> jonny
>>>
>>> Jonathan Rickard, RHCE, RHCA
>>>
>>> Consulting Architect
>>>
>>> Red Hat Public Sector <https://www.redhat.com/>
>>>
>>> jonny at redhat.com
>>> M: 210.862.9739
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