redstorm
May 8, 2023, 5:43pm
1
All my hosts suddenly stopped working (it wont connect) with an error message reading "Abnormal Disconnect".
When I realized I was able to SSH just fine via terminal I started going down the rabit hole. Here is what the log file says:
Equivalent Command: ssh -i "/Users/*****/Library/Group Containers/E78WKS7W4U.io.coressh.ssh/.ssh/privatekey/***** " -vvv -o ServerAliveInterval=15 -o ServerAliveCountMax=3 -o ExitOnForwardFailure=yes -p 22 @
I read on another thread about Core Helper, so I decided to give it a try, installed it and boom, it began working again.
So I am guessing something is broken in the OpenSSH implementation of the app and it happened during the weekend because I was logged in just fine last friday.
Appreciate any direction as I am guessing I shouldn't need to rely on Core Helper to get things running.
1 Like
yang
May 9, 2023, 1:04am
2
Hi Jose,
Could you please run this command in local shell:
ssh -i "/Users/*****/Library/Group Containers/E78WKS7W4U.io.coressh.ssh/.ssh/privatekey/*****" -vvv -o ServerAliveInterval=15 -o ServerAliveCountMax=3 -o ExitOnForwardFailure=yes -p 22 @**
and then send me a copy desensitized copy of terminal output?
Kindly Regards,
Yang
I have had this issue a few times recently - "Abnormal disconnect" with all Linux hosts. To fix, this is what I do:
Disable Core Helper (Preferences>Advanced>Uncheck "Enable Core Helper")
Run the Core Helper Installer.app again (I have not needed to re-download it)
Enable Core Helper again (the opposite of Step 1)
Hope this helps.
Kind regards, keep safe...
Jonathan
yang
July 6, 2023, 12:44am
4
What is the macOS version? And, could you please search for keyword "coressh" in Console.app when you encounter "Abnormal disconnect" issue?
Kindly Regards,
Yang
Ventura 13.4.1 (22F82) on Intel silicon.
Will do – I’ll post back when it happens again.
Kind regards, keep safe.
Jonathan
Hi @yang
It just happened again. No mention of coressh anywhere in Console app.
Ran the Core Helper Installer app again and it worked immediately I started Core Shell again.
I'm sure it's not relevant but I did have VSCode running with two open connections to the same machine I was trying to connect to with Core Shell. But Core Shell connected fine after installing the Core Helper with VSCode still running.
Please let me know if there is anything else I can do to help understand this.
Kind regards, keep safe...
Jonathan
yang
July 13, 2023, 10:17am
7
It seemed Core Helper agent exited accidentally.
When the next time you run into "Abnormal disconnect" issue, please first run
ps aux | grep coressh
in Terminal.app, and you should get output like this:
yang 4010 0.0 0.0 408543520 3360 ?? S 5:31PM 0:00.02 E78WKS7W4U.io.coressh.ShellHelper
yang 4745 0.0 0.0 407962720 48 s014 R+ 6:07PM 0:00.00 grep coressh
yang 4542 0.0 0.1 409509264 15840 ?? S 6:04PM 0:00.05 /Users/yang/Library/Group Containers/E78WKS7W4U.io.coressh/io.coressh.Helper.app/Contents/MacOS/io.coressh.Helper
But if it prints:
yang 4745 0.0 0.0 407962720 48 s014 R+ 6:07PM 0:00.00 grep coressh
It indicates Core Helper agent exited for various reasons (killed or abnormal exit). For this case, instead of reinstall Core Helper, try run this command to load Core Helper agent again:
launchctl load ~/Library/LaunchAgents/E78WKS7W4U.io.coressh.helper.plist
And then execute ps again:
ps aux | grep coressh
You should see three items printed.
Also, could you please Enable logging and paste the desensitized output?
Kindly Regards,
Yang
jonathangroves@Jonathans-MacBook-Pro ~ % ps aux | grep coressh
jonathangroves 43940 0.0 0.0 33591680 76 s000 R+ 5:07pm 0:00.00 grep coressh
jonathangroves 43898 0.0 0.0 34154344 4712 s002 Ss+ 5:06pm 0:00.02 /Users/jonathangroves/Library/Group Containers/E78WKS7W4U.io.coressh/io.coressh.Helper.app/Contents/MacOS/io.coressh.openssh ssh E78WKS7W4U.io.coressh.helper
jonathangroves 43827 0.0 0.0 34172776 6008 s001 Ss+ 5:05pm 0:00.08 /Users/jonathangroves/Library/Group Containers/E78WKS7W4U.io.coressh/io.coressh.Helper.app/Contents/MacOS/io.coressh.openssh ssh E78WKS7W4U.io.coressh.helper
jonathangroves 43543 0.0 0.0 34168864 4348 ?? S 5:00pm 0:00.06 /Users/jonathangroves/Library/Group Containers/E78WKS7W4U.io.coressh/io.coressh.Helper.app/Contents/MacOS/io.coressh.Helper
jonathangroves 43538 0.0 0.0 34159664 3568 ?? S 5:00pm 0:00.02 E78WKS7W4U.io.coressh.ShellHelper
jonathangroves@Jonathans-MacBook-Pro ~ %
Equivalent Command: ssh -4 -vvv -o AddKeysToAgent=yes -o ServerAliveCountMax=3 -o ExitOnForwardFailure=yes -o ServerAliveInterval=15 -p 22 jonathan@192.168.1.197
16:11:06 Connecting…
16:11:06 Using Core Helper 6.6 (r3386)
16:11:06 OpenSSH_8.8p1, OpenSSL 1.1.1l 24 Aug 2021
16:11:06 debug1: Reading configuration data /Users/jonathangroves/.ssh/config
16:11:06 debug1: Reading configuration data /etc/ssh/ssh_config
16:11:06 debug1: /etc/ssh/ssh_config line 21: include /etc/ssh/ssh_config.d/* matched no files
16:11:06 debug1: /etc/ssh/ssh_config line 54: Applying options for *
16:11:06 debug2: resolve_canonicalize: hostname 192.168.1.197 is address
16:11:06 debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' -> '/Users/jonathangroves/.ssh/known_hosts'
16:11:06 debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts2' -> '/Users/jonathangroves/.ssh/known_hosts2'
16:11:06 debug3: ssh_connect_direct: entering
16:11:06 debug1: Connecting to 192.168.1.197 [192.168.1.197] port 22.
16:11:06 debug3: set_sock_tos: set socket 3 IP_TOS 0x48
Tried the launctl...
jonathangroves@Jonathans-MacBook-Pro ~ % launchctl load ~/Library/LaunchAgents/E78WKS7W4U.io.coressh.helper.plist
Load failed: 5: Input/output error
Try running `launchctl bootstrap` as root for richer errors.
jonathangroves@Jonathans-MacBook-Pro ~ %
Oh no - this isn't the same problem. Remove Core Helper and added it again and same problem present.
yang
August 11, 2023, 2:15pm
9
Please try unload and then load again:
launchctl unload ~/Library/LaunchAgents/E78WKS7W4U.io.coressh.helper.plist
launchctl load ~/Library/LaunchAgents/E78WKS7W4U.io.coressh.helper.plist
Yang
tekops
October 1, 2024, 12:03am
10
This fixed it for me. I set up a cronjob to run every 180 days to run this.