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deis-builder 1.10.0 is spitting 'Failed handshake: EOF' once per ~5 seconds #4431

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kalbasit opened this issue Sep 8, 2015 · 14 comments · Fixed by #4935
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deis-builder 1.10.0 is spitting 'Failed handshake: EOF' once per ~5 seconds #4431

kalbasit opened this issue Sep 8, 2015 · 14 comments · Fixed by #4935
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@technosophos
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builder easy-fix
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v1.13 LTS

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@kalbasit
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kalbasit commented Sep 8, 2015

Log as seen in papertrail:

Sep 08 15:07:11 52.22.0.199 logger:  2015-09-08T22:07:11UTC deis-builder[1]: [error] Failed handshake: EOF (&{{0xc82046a2a0}})
Sep 08 15:07:11 52.22.0.199 logger:  2015-09-08T22:07:11UTC deis-builder[1]: [info] Accepted connection.
Sep 08 15:07:11 52.22.0.199 logger:  2015-09-08T22:07:11UTC deis-builder[1]: [info] Checking closer.
Sep 08 15:07:17 52.22.0.199 logger:  2015-09-08T22:07:17UTC deis-builder[1]: [error] Failed handshake: EOF (&{{0xc82017f7a0}})
Sep 08 15:07:21 52.22.0.199 logger:  2015-09-08T22:07:21UTC deis-builder[1]: [info] Accepted connection.
Sep 08 15:07:21 52.22.0.199 logger:  2015-09-08T22:07:21UTC deis-builder[1]: [info] Checking closer.
Sep 08 15:07:24 52.22.0.199 logger:  2015-09-08T22:07:24UTC deis-builder[1]: [error] Failed handshake: EOF (&{{0xc820436770}})
Sep 08 15:07:25 52.22.0.199 logger:  2015-09-08T22:07:25UTC deis-builder[1]: [info] Accepted connection.
Sep 08 15:07:25 52.22.0.199 logger:  2015-09-08T22:07:25UTC deis-builder[1]: [info] Checking closer.
Sep 08 15:07:29 52.22.0.199 logger:  2015-09-08T22:07:29UTC deis-builder[1]: [info] Checking closer.
Sep 08 15:07:29 52.22.0.199 logger:  2015-09-08T22:07:29UTC deis-builder[1]: [info] Accepted connection.
Sep 08 15:07:29 52.22.0.199 logger:  2015-09-08T22:07:29UTC deis-builder[1]: [error] Failed handshake: EOF (&{{0xc820048fc0}})
Sep 08 15:07:32 52.22.0.199 logger:  2015-09-08T22:07:32UTC deis-builder[1]: [error] Failed handshake: EOF (&{{0xc8202682a0}})
Sep 08 15:07:33 52.22.0.199 logger:  2015-09-08T22:07:33UTC deis-builder[1]: [info] Checking closer.
Sep 08 15:07:33 52.22.0.199 logger:  2015-09-08T22:07:33UTC deis-builder[1]: [info] Accepted connection.
Sep 08 15:07:40 52.22.0.199 logger:  2015-09-08T22:07:40UTC deis-builder[1]: [error] Failed handshake: EOF (&{{0xc8201bc7e0}})
@krancour
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krancour commented Sep 8, 2015

I haven't seen this so frequently as every five seconds, but I've at least noticed it toward the end of the trace every time I start builder. AFAICT, it's not causing any issue, but the word "error" is sufficiently alarming that I think we need to either get to the bottom of this or else silence it if it is benign.

@sgoings
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sgoings commented Sep 8, 2015

Could @technosophos chime in? I remember he had an answer to why this might be happening...

@mboersma
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Ping @technosophos--any idea why this would show up so often?

@mboersma
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A customer has also reported this issue in a production cluster. Need to figure out what the conditions are that provokes this, since it isn't happening on new provisions we've tested.

@technosophos
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Missed this one. I would guess that this is happening because something is opening an SSH connection and then immediately closing it again. Probably this is a health check.

@technosophos
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Here is the line emitting the error:

https://github.com/deis/deis/blob/master/builder/sshd/server.go#L137

We could downgrade that to a warning if you'd like. It is, after all, not really a cause for concern if we're dealing with TCP probes that check that the port is listening, but have no intention of actually initializing an SSH session.

@kalbasit
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Here's my SSH config:

Host *
  ControlMaster auto
  ControlPath /tmp/ssh-%r@%h:%p
  ControlPersist yes
  ServerAliveInterval 20
  SendEnv yes
  Protocol 2
  TCPKeepAlive yes
  ServerAliveCountMax 6
  Compression yes

So perhaps it's the ServerAliveInterval ?

@laurrentt
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+1 I'm starting to have there midway during a build. Not over and over though. Any workaround yet ?

@olalonde
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Having same error message after stopping/starting deis-builder. Also, git push deis hangs at Waiting for git-receive to run. Waiting for deploy..

@sstarcher
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Nov 25th I created a new test Deis cluster and everything was good. This morning I started up a new Deis cluster using the same scripts as previously and I'm running into this issue.

I first noticed it via what @olalonde mentioned. After the cluster was up git push deis was hanging. I noticed the Deis builder box was at near peak CPU. I have destroyed the cluster 3 times now and am getting the same issue each time.
AWS
Stateless
Deis 1.12.1

My existing cluster is a 1.12.1 that I stood up a few weeks back and did not have this issue.

Nov 30 18:54:39 ip-10-0-40-118.ec2.internal sh[2041]: [info] Finished pushing deis/slugrunner:latest to 10.0.30.143:5000.
Nov 30 18:54:39 ip-10-0-40-118.ec2.internal sh[2041]: [debug] Name: EXTERNAL_PORT, Val: 2223
Nov 30 18:54:39 ip-10-0-40-118.ec2.internal sh[2041]: [info] Added hostkey.
Nov 30 18:54:39 ip-10-0-40-118.ec2.internal sh[2041]: [info] Added hostkey.
Nov 30 18:54:39 ip-10-0-40-118.ec2.internal sh[2041]: [info] Added hostkey.
Nov 30 18:54:39 ip-10-0-40-118.ec2.internal sh[2041]: [info] Listening on 0.0.0.0:2223
Nov 30 18:54:39 ip-10-0-40-118.ec2.internal sh[2041]: [info] Accepting new connections.
Nov 30 18:54:39 ip-10-0-40-118.ec2.internal sh[2041]: [info] Checking closer.
Nov 30 18:54:39 ip-10-0-40-118.ec2.internal sh[2041]: [info] Builder is running.
Nov 30 18:54:39 ip-10-0-40-118.ec2.internal sh[2041]: [info] Checking closer.
Nov 30 18:54:39 ip-10-0-40-118.ec2.internal sh[2041]: [info] Accepted connection.
Nov 30 18:54:39 ip-10-0-40-118.ec2.internal systemd[1]: Started deis-builder.
Nov 30 18:54:39 ip-10-0-40-118.ec2.internal sh[2041]: [error] Failed handshake: EOF (&{{0xc8201b83f0}})
Nov 30 18:54:41 ip-10-0-40-118.ec2.internal sh[2041]: [info] Checking closer.
Nov 30 18:54:41 ip-10-0-40-118.ec2.internal sh[2041]: [info] Accepted connection.
Nov 30 18:54:41 ip-10-0-40-118.ec2.internal sh[2041]: [error] Failed handshake: EOF (&{{0xc8201b8460}})
Nov 30 18:54:41 ip-10-0-40-118.ec2.internal sh[2041]: [info] Checking closer.
Nov 30 18:54:41 ip-10-0-40-118.ec2.internal sh[2041]: [info] Accepted connection.
Nov 30 18:54:41 ip-10-0-40-118.ec2.internal sh[2041]: [error] Failed handshake: EOF (&{{0xc820151880}})
Nov 30 18:54:41 ip-10-0-40-118.ec2.internal sh[2041]: [info] Checking closer.
Nov 30 18:54:41 ip-10-0-40-118.ec2.internal sh[2041]: [info] Accepted connection.

@sstarcher
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My issue was related to changing the AWS ELB. Port 2222 was TCP->TCP and I changed it to HTTP->HTTP when I removed proxyProtocol. This was a mistake on my part and should of been left as TCP->TCP as this is used for SSH and is unrelated to any setting of proxyProtocol.

@olalonde
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olalonde commented Dec 1, 2015

I did an in place upgrade to 1.21.1 and had some problem with the registry so re-installed 1.11.2 which solved the issue I was having with the builder.

@kenaniah
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kenaniah commented Dec 6, 2015

I can verify that deis-builder throws the Failed handshake: EOF errors on a new 1.12.1 cluster (on AWS) as well. Restarting the deis-builder service produces the following log:

Dec 06 23:12:06 deis-1 systemd[1]: Starting deis-builder...
Dec 06 23:12:07 deis-1 sh[31278]: deis-builder
Dec 06 23:12:07 deis-1 sh[31291]: /dev/loop0
Dec 06 23:12:07 deis-1 sh[31295]: Waiting for builder on 2223/tcp...
Dec 06 23:12:07 deis-1 sh[31294]: [debug] Name: HOST, Val: 10.0.20.77
Dec 06 23:12:07 deis-1 sh[31294]: [debug] Name: ETCD_PORT, Val: 4001
Dec 06 23:12:07 deis-1 sh[31294]: [debug] Name: ETCD_PATH, Val: /deis/builder
Dec 06 23:12:07 deis-1 sh[31294]: [debug] Name: ETCD_TTL, Val: 20
Dec 06 23:12:07 deis-1 sh[31294]: [debug] Name: ETCD, Val: 10.0.20.77:4001
Dec 06 23:12:07 deis-1 sh[31294]: [info] Starting docker with -d --bip=172.19.42.1/16 --insecure-registry 10.0.0.0/8 --insecure-registry 172.16.0.0/12 --insecure-registry 192.168.0.0/16 --insecure-registry 100.64.0.0/10 --storage-driver=overlay
Dec 06 23:12:08 deis-1 sh[31294]: [info] Docker is running.
Dec 06 23:12:08 deis-1 sh[31294]: [info] Starting build for /usr/local/src/slugbuilder/ (tag: deis/slugbuilder)
Dec 06 23:12:08 deis-1 sh[31294]: [110B blob data]
Dec 06 23:12:08 deis-1 sh[31294]: Step 0 : FROM heroku/cedar:14
Dec 06 23:12:08 deis-1 sh[31294]: ---> 56b31ddc05ad
Dec 06 23:12:08 deis-1 sh[31294]: Step 1 : RUN mkdir /app
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> b3c2ec6ee57d
Dec 06 23:12:08 deis-1 sh[31294]: Step 2 : RUN addgroup --quiet --gid 2000 slug &&   useradd slug --uid=2000 --gid=2000 --home-dir /app --no-create-home
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> 70347c5fae1b
Dec 06 23:12:08 deis-1 sh[31294]: Step 3 : RUN chown -R slug:slug /app
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> 0f9699f40329
Dec 06 23:12:08 deis-1 sh[31294]: Step 4 : USER slug
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> 54f240ece931
Dec 06 23:12:08 deis-1 sh[31294]: Step 5 : ENV HOME /app
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> a926734b6a31
Dec 06 23:12:08 deis-1 sh[31294]: Step 6 : ADD ./builder/ /tmp/builder
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> 5d05196fde04
Dec 06 23:12:08 deis-1 sh[31294]: Step 7 : RUN /tmp/builder/install-buildpacks
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> 4e68764e3976
Dec 06 23:12:08 deis-1 sh[31294]: Step 8 : ENTRYPOINT /tmp/builder/build.sh
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> b8a74e1191c8
Dec 06 23:12:08 deis-1 sh[31294]: Step 9 : ENV DEIS_RELEASE 1.12.1
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> d85e2481e7b4
Dec 06 23:12:08 deis-1 sh[31294]: Successfully built d85e2481e7b4
Dec 06 23:12:08 deis-1 sh[31294]: [info] Starting build for /usr/local/src/slugrunner/ (tag: deis/slugrunner)
Dec 06 23:12:08 deis-1 sh[31294]: [info] Sleeping
Dec 06 23:12:08 deis-1 sh[31294]: [110B blob data]
Dec 06 23:12:08 deis-1 sh[31294]: Step 0 : FROM heroku/cedar:14
Dec 06 23:12:08 deis-1 sh[31294]: ---> 56b31ddc05ad
Dec 06 23:12:08 deis-1 sh[31294]: Step 1 : RUN mkdir /app
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> b3c2ec6ee57d
Dec 06 23:12:08 deis-1 sh[31294]: Step 2 : RUN addgroup --quiet --gid 2000 slug &&     useradd slug --uid=2000 --gid=2000 --home-dir /app --no-create-home         --shell /bin/bash
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> 132d20c9eef1
Dec 06 23:12:08 deis-1 sh[31294]: Step 3 : RUN chown slug:slug /app
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> f4f8ded5157a
Dec 06 23:12:08 deis-1 sh[31294]: Step 4 : WORKDIR /app
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> f45057a5ea1d
Dec 06 23:12:08 deis-1 sh[31294]: Step 5 : ENV PORT 5000
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> d68fdf4939eb
Dec 06 23:12:08 deis-1 sh[31294]: Step 6 : EXPOSE 5000
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> 417e631877df
Dec 06 23:12:08 deis-1 sh[31294]: Step 7 : ADD ./runner /runner
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> cbf5d14deae1
Dec 06 23:12:08 deis-1 sh[31294]: Step 8 : RUN chown slug:slug /runner/init
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> 2ba0676b1ea8
Dec 06 23:12:08 deis-1 sh[31294]: Step 9 : USER slug
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> 4bcd9b1dfd70
Dec 06 23:12:08 deis-1 sh[31294]: Step 10 : ENV HOME /app
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> b83f633cb5f1
Dec 06 23:12:08 deis-1 sh[31294]: Step 11 : ENTRYPOINT /runner/init
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> 4f6d01e34609
Dec 06 23:12:08 deis-1 sh[31294]: Step 12 : ENV DEIS_RELEASE 1.12.1
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> fd64afe9a73c
Dec 06 23:12:08 deis-1 sh[31294]: Step 13 : ONBUILD run mkdir -p /app
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> 46e05c9b3cf5
Dec 06 23:12:08 deis-1 sh[31294]: Step 14 : ONBUILD workdir /app
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> 90db5c12611b
Dec 06 23:12:08 deis-1 sh[31294]: Step 15 : ONBUILD add slug.tgz /app
Dec 06 23:12:08 deis-1 sh[31294]: ---> Using cache
Dec 06 23:12:08 deis-1 sh[31294]: ---> a1b65596f340
Dec 06 23:12:08 deis-1 sh[31294]: Successfully built a1b65596f340
Dec 06 23:12:29 deis-1 sh[31294]: [info] Woke up.
Dec 06 23:12:29 deis-1 sh[31294]: warnContinuing after Recoverable Error on route boot: 105: Key already exists (/deis/builder/users) [3155182]
Dec 06 23:12:29 deis-1 sh[31294]: [info] Parsed host key /etc/ssh/ssh_host_rsa_key.
Dec 06 23:12:29 deis-1 sh[31294]: [info] Parsed host key /etc/ssh/ssh_host_dsa_key.
Dec 06 23:12:29 deis-1 sh[31294]: [info] Parsed host key /etc/ssh/ssh_host_ecdsa_key.
Dec 06 23:12:29 deis-1 sh[31294]: [info] Building confd templates. This may take a moment.
Dec 06 23:12:29 deis-1 sh[31294]: [info] Templates generated for 10.0.20.77:4001 on run 0
Dec 06 23:12:29 deis-1 sh[31294]: [info] Watching confd.
Dec 06 23:12:29 deis-1 sh[31294]: [info] Downloading Docker images. This may take a long time. https://xkcd.com/303/
Dec 06 23:12:29 deis-1 sh[31294]: [info] Images downloaded
Dec 06 23:12:29 deis-1 sh[31294]: [info] Pushing deis/slugrunner:latest to 10.0.20.77:5000. This may take some time.
Dec 06 23:12:36 deis-1 sh[31294]: [info] Finished pushing deis/slugrunner:latest to 10.0.20.77:5000.
Dec 06 23:12:36 deis-1 sh[31294]: [debug] Name: EXTERNAL_PORT, Val: 2223
Dec 06 23:12:36 deis-1 sh[31294]: [info] Added hostkey.
Dec 06 23:12:36 deis-1 sh[31294]: [info] Added hostkey.
Dec 06 23:12:36 deis-1 sh[31294]: [info] Added hostkey.
Dec 06 23:12:36 deis-1 sh[31294]: [info] Listening on 0.0.0.0:2223
Dec 06 23:12:36 deis-1 sh[31294]: [info] Accepting new connections.
Dec 06 23:12:36 deis-1 sh[31294]: [info] Checking closer.
Dec 06 23:12:36 deis-1 sh[31294]: [info] Builder is running.
Dec 06 23:12:36 deis-1 sh[31294]: [info] Checking closer.
Dec 06 23:12:36 deis-1 sh[31294]: [info] Accepted connection.
Dec 06 23:12:36 deis-1 sh[31294]: [error] Failed handshake: EOF (&{{0xc8201c0bd0}})
Dec 06 23:12:36 deis-1 systemd[1]: Started deis-builder.
Dec 06 23:12:57 deis-1 sh[31294]: [info] Checking closer.
Dec 06 23:12:57 deis-1 sh[31294]: [info] Accepted connection.
Dec 06 23:14:03 deis-1 sh[31294]: [info] Checking closer.
Dec 06 23:14:03 deis-1 sh[31294]: [info] Accepted connection.
Dec 06 23:14:04 deis-1 sh[31294]: [error] Failed handshake: EOF (&{{0xc8201cda40}})
Dec 06 23:14:05 deis-1 sh[31294]: [error] Failed handshake: EOF (&{{0xc820243960}})
Dec 06 23:14:05 deis-1 sh[31294]: [info] Checking closer.
Dec 06 23:14:05 deis-1 sh[31294]: [info] Accepted connection.
Dec 06 23:14:07 deis-1 sh[31294]: [error] Failed handshake: EOF (&{{0xc820380bd0}})
Dec 06 23:14:56 deis-1 sh[31294]: [info] Checking closer.
Dec 06 23:14:56 deis-1 sh[31294]: [info] Accepted connection.
Dec 06 23:14:58 deis-1 sh[31294]: [error] Failed handshake: EOF (&{{0xc8201cc930}})
Dec 06 23:15:22 deis-1 sh[31294]: [info] Checking closer.
Dec 06 23:15:22 deis-1 sh[31294]: [info] Accepted connection.
Dec 06 23:15:24 deis-1 sh[31294]: [error] Failed handshake: EOF (&{{0xc8204fb3b0}})
Dec 06 23:15:24 deis-1 sh[31294]: [info] Checking closer.
Dec 06 23:15:24 deis-1 sh[31294]: [info] Accepted connection.
Dec 06 23:15:26 deis-1 sh[31294]: [error] Failed handshake: EOF (&{{0xc8202ba070}})
Dec 06 23:22:06 deis-1 sh[31294]: [info] Checking closer.
Dec 06 23:22:06 deis-1 sh[31294]: [info] Accepted connection.

I haven't had time to look into it, but there was a suspicious line in the log that caught my attention:
Dec 06 23:12:29 deis-1 sh[31294]: warnContinuing after Recoverable Error on route boot: 105: Key already exists (/deis/builder/users) [3155182]

@bacongobbler bacongobbler added this to the v1.13 LTS milestone Jan 21, 2016
@wgrrrr
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wgrrrr commented Jan 22, 2016

I'm also seeing the same behaviour on 1.12.2. It seems this is pretty well documented/understood at this point, but thought I'd add the following log in case it is helpful for anyone.

...
Jan 22 17:45:36 ip-10-0-32-175 sh[28479]: [info] Added hostkey.
Jan 22 17:45:36 ip-10-0-32-175 sh[28479]: [info] Added hostkey.
Jan 22 17:45:36 ip-10-0-32-175 sh[28479]: [info] Added hostkey.
Jan 22 17:45:36 ip-10-0-32-175 sh[28479]: [info] Listening on 0.0.0.0:2223
Jan 22 17:45:36 ip-10-0-32-175 sh[28479]: [info] Accepting new connections.
Jan 22 17:45:36 ip-10-0-32-175 sh[28479]: [info] Checking closer.
Jan 22 17:45:36 ip-10-0-32-175 sh[28479]: [info] Builder is running.
Jan 22 17:45:37 ip-10-0-32-175 sh[28479]: [info] Checking closer.
Jan 22 17:45:37 ip-10-0-32-175 sh[28479]: [info] Accepted connection.
Jan 22 17:45:37 ip-10-0-32-175 sh[28479]: [error] Failed handshake: EOF (&{{0xc8201a75e0}})
Jan 22 17:45:37 ip-10-0-32-175 systemd[1]: Started deis-builder.

The result is intermittent failures to git push to the cluster by various users. Interestingly, it seems some users can push while others can't.

@bacongobbler bacongobbler mentioned this issue Feb 25, 2016
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@kingdonb kingdonb mentioned this issue Aug 18, 2018
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fix(builder): demote handshake failure log to debug bacongobbler/deis