[Platformone] AWS Access Slowdowns

Mon Dec 9 23:26:17 UTC 2019

Ticket opened. Odd that the EC2 is running at 84% utilization and it's empty.

V/R
Adrian

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________________________________
From: Dean Lystra <dlystra at redhat.com>
Sent: Monday, December 9, 2019 6:19:46 PM
To: Taylor Biggs <taylor at redhat.com>
Cc: Adrian Nunez <adrian.nunez at bylight.com>; platformONE at redhat.com <platformONE at redhat.com>
Subject: Re: [Platformone] AWS Access Slowdowns

[EXTERNAL EMAIL]

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<mailto: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

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On Mon, Dec 9, 2019 at 5:15 PM Dean Lystra <dlystra at redhat.com<mailto: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<http://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<mailto: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

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From: Dean Lystra <dlystra at redhat.com<mailto:dlystra at redhat.com>>
Sent: Monday, December 9, 2019 5:12:04 PM
To: Adrian Nunez <adrian.nunez at bylight.com<mailto:adrian.nunez at bylight.com>>
Cc: Mark Nissley <mnissley at redhat.com<mailto:mnissley at redhat.com>>; Jonathan Rickard <jrickard at redhat.com<mailto:jrickard at redhat.com>>; platformONE at redhat.com<mailto:platformONE at redhat.com> <platformONE at redhat.com<mailto: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<http://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<http://10.10.96.0/20>.

On Mon, Dec 9, 2019, 4:06 PM Adrian Nunez <adrian.nunez at bylight.com<mailto:adrian.nunez at bylight.com>> wrote:
Call me. What EC2's?

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From: Mark Nissley <mnissley at redhat.com<mailto:mnissley at redhat.com>>
Sent: Monday, December 9, 2019 5:04:15 PM
To: Jonathan Rickard <jrickard at redhat.com<mailto:jrickard at redhat.com>>
Cc: Adrian Nunez <adrian.nunez at bylight.com<mailto:adrian.nunez at bylight.com>>; Goss, Andrew [Semper Valens Solutions (SVS)] <andrew.goss at accenturefederal.com<mailto:andrew.goss at accenturefederal.com>>; platformONE at redhat.com<mailto:platformONE at redhat.com> <platformONE at redhat.com<mailto: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

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On Mon, Dec 9, 2019 at 3:42 PM Jonathan Rickard <jrickard at redhat.com<mailto: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

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