Segmentation fault on MacOS

[ylianst]

Segmentation fault on MacOS

[luckydonald]

Edit: "Unable to open database" might be related to #9?

[krayon007]

The other thread, he got unable to open databsase because he tried to run another instance of the agent from the same folder, while the service was still running...

Did you copy the executable into a .bak file? The agent appends .db to the end of the executable path, and uses that for the db location, so I'm not sure why it would say unable to open database. I just tried that on my system, and it just says there is no .msh file.

On a side note, I'll look at the uninstall script to make sure it actually stops the service. If you want to manually stop the service, use the command: launchctl stop meshagent

Either way, I'll see what happens on MacOS, when I run two overlapping instances (which will force the db error), and see if I can get it to crash, because it's not supposed to crash when that happens, it's supposed to just give up and exit.

[luckydonald]

Can I somehow send you a crash report to help?

I duplicated it to .bak so I'd still have it after the the uninstall script ran.
Yeah, the uninstall script stopped the original service (/bin/launchctl unload /Library/LaunchDaemons/meshagent_osx64_LaunchDaemon.plist, and deleted a bunch of files.

So what I did after a normal install:

$ cp /usr/local/mesh_services/meshagent/meshagent_osx64 /usr/local/mesh_services/meshagent/meshagent_osx64.bak
$ ~/Downloads/MeshAgent.mpkg/Uninstall.command
# now the above

[luckydonald]

Tried running that command now, the uninstaller seem to have been thorough enough:

mac:~ luckydonald$ launchctl stop meshagent
launchctl stop error: No such process
mac:~ luckydonald$ sudo launchctl stop meshagent
Password:
launchctl stop error: No such process
mac:~ luckydonald$

[luckydonald]

Turns out I needed to run sudo as apparently the .db file is not accessable otherwise.

mac:~ luckydonald$ sudo mv /usr/local/mesh_services/meshagent/meshagent_osx64.bak /usr/local/mesh_services/meshagent/meshagent_osx64
mac:~ luckydonald$ /usr/local/mesh_services/meshagent/meshagent_osx64
MeshCentral2 Agent
Unable to open database (1/10)...
Segmentation fault: 11
mac:~ luckydonald$ sudo /usr/local/mesh_services/meshagent/meshagent_osx64
MeshCentral2 Agent
Connecting to: ws://meshcentral.example.com:80/agent.ashx
Protocol Error encountered...
Protocol Error encountered...
Mesh Server Connection Error
AutoRetry Connect in 1925 milliseconds
Connecting to: ws://meshcentral.example.com:80/agent.ashx
Protocol Error encountered...
Protocol Error encountered...
Mesh Server Connection Error
AutoRetry Connect in 2675 milliseconds

The Websocket stuff might be related to a misconfiguration of my nginx reverse proxy, and is out of scope of this issue, I'll open another one if I get problems with resolving that.

However, I keep the ticket open because of the segmentation fault. If that is solved, a permission check on the required files would help users what is going wrong.

[luckydonald]

I had to also do

sudo nano /usr/local/mesh_services/meshagent/meshagent_osx64.msh

and change

- ws://example.com:80/agent.ashx
+ wss://example.com:443/agent.ashx

for it to finally work.