Migrated FOG, Clients Not Happy

[Scott B]

Here is the output when using wget from the server console.

root@fogserver:~/fogproject/bin# wget http://fogserver/fog/management/other/ssl/srvpublic.crt
--2019-12-18 20:23:57--  http://fogserver/fog/management/other/ssl/srvpublic.crt
Resolving fogserver (fogserver)... 127.0.1.1
Connecting to fogserver (fogserver)|127.0.1.1|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1757 (1.7K) [application/x-x509-ca-cert]
Saving to: ‘srvpublic.crt’

srvpublic.crt                           100%[============================================================================>]   1.72K  --.-KB/s    in 0s

2019-12-18 20:23:57 (189 MB/s) - ‘srvpublic.crt’ saved [1757/1757]

I can try from a different computer if you need me to. Looking at the cert store on the windows device I have both the FOG Server CA which is valid as well as the FOG Project cert.

[Sebastian Roth]

@Scott-B said in Migrated FOG, Clients Not Happy:

Looking at the cert store on the windows device I have both the FOG Server CA which is valid as well as the FOG Project cert.

Did you compare the thumbprint as described below? Sorry I edited the post a few minutes after initially sending it so you might not have seen this.

[Scott B]

@Sebastian-Roth said in Migrated FOG, Clients Not Happy:

openssl x509 -in /opt/fog/snapins/ssl/CA/.fogCA.pem -fingerprint -noout

Comparing the FOG Server CA on the workstation and the server shows two different thumbprints.

Server:
E5:D3:32:A3:5F:8D:A4:B8:BD:3C:6B:CC:76:A6:A5:F0:85:3C:9B:B8

Client:
6B:9D:5B:3F:BC:23:7B:9D:1E:69:46:80:C2:90:CB:9A:BC:97:DD:70

[Sebastian Roth]

@Scott-B said in Migrated FOG, Clients Not Happy:

I migrated out FOG install over to a new server.

Ohhhhhh my… ! Sorry, I totally missed that in your initial post. I was too scared it had something to do with the 0.11.17 fog-client release…

You need to copy the certificates from your old server to the new one: https://wiki.fogproject.org/wiki/index.php?title=Migrate_FOG#If_old_server_was_FOG_1.3.0.2B

[Scott B]

@Sebastian-Roth

I did copy them over and ran the installer again. Is it only files in /opt/fog/snapins/ssl/ or do I have to worry about the certs in /var/www/fog/management/other/ as well?

[Sebastian Roth]

@Scott-B said in Migrated FOG, Clients Not Happy:

I did copy them over and ran the installer again. Is it only files in /opt/fog/snapins/ssl/ or do I have to worry about the certs in /var/www/fog/management/other/ as well?

The installer should take care of the rest (/var/www/fog/management/other/…). Please see if the client’s are happy reconnecting now.

[Scott B]

@Sebastian-Roth

They are still not happy.

------------------------------------------------------------------------------
----------------------------------UserTracker---------------------------------
------------------------------------------------------------------------------
 12/19/2019 12:14 PM Client-Info Client Version: 0.11.17
 12/19/2019 12:14 PM Client-Info Client OS:      Windows
 12/19/2019 12:14 PM Client-Info Server Version: 1.5.7.86
 12/19/2019 12:14 PM Middleware::Response ERROR: Unable to get subsection
 12/19/2019 12:14 PM Middleware::Response ERROR: Object reference not set to an instance of an object.
 12/19/2019 12:14 PM Service Sleeping for 84 seconds
 12/19/2019 12:15 PM Middleware::Communication URL: http://fogserver/fog/management/index.php?sub=requestClientInfo&configure&newService&json
 12/19/2019 12:15 PM Middleware::Response Success
 12/19/2019 12:15 PM Middleware::Communication URL: http://fogserver/fog/management/index.php?sub=requestClientInfo&mac=2C:41:38:8F:55:FF&newService&json
 12/19/2019 12:15 PM Middleware::Authentication Waiting for authentication timeout to pass
 12/19/2019 12:15 PM Middleware::Communication Download: http://fogserver/fog/management/other/ssl/srvpublic.crt
 12/19/2019 12:16 PM Data::RSA FOG Server CA cert found
 12/19/2019 12:16 PM Data::RSA ERROR: Certificate validation failed
 12/19/2019 12:16 PM Data::RSA ERROR: Trust chain did not complete to the known authority anchor. Errors: The signature of the certificate cannot be verified. (NotSignatureValid)
 12/19/2019 12:16 PM Middleware::Authentication ERROR: Could not authenticate
 12/19/2019 12:16 PM Middleware::Authentication ERROR: Certificate is not from FOG CA
 12/19/2019 12:16 PM Middleware::Response Success
 12/19/2019 12:16 PM Middleware::Communication URL: http://fogserver/fog/service/getversion.php?clientver&newService&json
 12/19/2019 12:16 PM Middleware::Communication URL: http://fogserver/fog/service/getversion.php?newService&json

 12/19/2019 12:16 PM Service Creating user agent cache
 12/19/2019 12:16 PM Middleware::Response ERROR: Unable to get subsection
 12/19/2019 12:16 PM Middleware::Response ERROR: Object reference not set to an instance of an object.
 12/19/2019 12:16 PM Middleware::Response ERROR: Unable to get subsection
 12/19/2019 12:16 PM Middleware::Response ERROR: Object reference not set to an instance of an object.
 12/19/2019 12:16 PM Middleware::Response ERROR: Unable to get subsection
 12/19/2019 12:16 PM Middleware::Response ERROR: Object reference not set to an instance of an object.

[Sebastian Roth]

@Scott-B Still the same error. Sounds a bit like it still sends out the old certificate. Re-running the installer should have restarted the Apache webserver. But you might manually restart it (systemctl restart apache2 or systemctl restart httpd) or the whole server.

Then do a comparison of the thumbprints again. Sorry again, I think I have messed up

openssl x509 -in /opt/fog/snapins/ssl/CA/.fogCA.pem -fingerprint -noout
openssl x509 -in /var/www/html/management/other/ssl/ca.cert.pem -fingerprint -noout

Compare those to the thumbprint you find in the certificate management in Windows from the “FOG Server CA”.

[Scott B]

@Sebastian-Roth said in Migrated FOG, Clients Not Happy:

systemctl restart apache2

Restarted apache and rechecked the thumbprints. They are still different. Same thumbprints as before.

[Sebastian Roth]

@Scott-B Funny I just got time to look into this again. It’s very strange you still get the “wrong” thumbprint. Are you sure you copied the right files?

[Sebastian Roth]

@Scott-B Can you get the thumbprints on the old server?

[Scott B]

@Sebastian-Roth said in Migrated FOG, Clients Not Happy:

@Scott-B Can you get the thumbprints on the old server?

The tumbprint from srvpublic.crt in /var/fog/management/other/ssl on the older server is
88901133f4640b294ec5f4538e3f098eccadca45

[Sebastian Roth]

@Scott-B said in Migrated FOG, Clients Not Happy:

The tumbprint from srvpublic.crt in /var/fog/management/other/ssl on the older server is
88901133f4640b294ec5f4538e3f098eccadca45

Watch out! You don’t want to compare apples with pears! What you need is the same CA certificate (same thumbprint) that you had on the old server to be used on the new server as well. The CA cert is originally generated in /opt/fog/snapins/ssl/CA/.fogCA.pem and then copied over to /var/www/html/management/other/ssl/ca.cert.pem - those two files should have the exact same thumbprint. The later one is used by the fog-client installer to “pin” itself to this exact FOG server. So the certificate you see as “FOG Server CA” on the client should essentially be the exact same as the two mentioned above.

[Sebastian Roth]

@Scott-B Did you find what was causing this?

[Scott B]

@Sebastian-Roth said in Migrated FOG, Clients Not Happy:

@Scott-B Did you find what was causing this?

No, I have not. My backup, clients, and current running server all have different thumbprints. I have no idea how that’s happened. Is it possible to take the cert from a client and add it to the server?

[Sebastian Roth]

@Scott-B Do you still have a backup copy of your old server?

Is it possible to take the cert from a client and add it to the server?

Sorry, no. The key needed is only on your server and never transferred to the clients.

[Sebastian Roth]

@Scott-B Do you still struggle to get this to work?

[Scott B]

@Sebastian-Roth

We were not able to bring his setup back online and reconnect the client. I ended up building a new fresh FOG install and we will reimport the machines as we go around. It’s not to big a deal as we needed an excuse to clean up the database anyway.

[Sebastian Roth]

@Scott-B But you’ll need to reinstall the fog-client software on all your machines too.

Other than that you might try to use GPO powershell scripting to exchange the certificates on all the machines as well.

[Scott B]

@Sebastian-Roth

I’ll have to brush up on the commands for replacing the certs on the clients. Been a long time.