Troubleshoot FTP

FTP's roles in FOG

FTP is only used for two things in FOG. The primary purpose is moving & renaming image files in the /images/dev folder to the /images folder. FTP is not used for image upload or download because NFS is faster. FTP is also used to download kernels.

FTP should be able to read and delete from /images/dev and should be able to write to /images.

Testing FTP

Try to get a file with Linux:

These commands are NOT done on your FOG server, they are done on another Linux machine (this example uses Fedora).

To explain what's happening below in the code box,

• Create a test file with some data in it to send later.

• Start ftp (may need installed first).

• Open connection to FOG server.

• Provide username.

• Provide password.

• Change to /images directory.

• List directory contents.

• Upload file.

• List directory contents to verify.

• Download the file.

• Delete the file.

• Exit ftp.

[administrator@D620 ~]$ echo 'some text here to send later' > test.txt
[administrator@D620 ~]$ ftp
ftp> open 10.0.0.3
Connected to 10.0.0.3 (10.0.0.3).
220 (vsFTPd 3.0.2)
Name (10.0.0.3:administrator): fog
331 Please specify the password.
Password:
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> cd /images
250 Directory successfully changed.
ftp> ls
227 Entering Passive Mode (10,0,0,3,204,176).
150 Here comes the directory listing.
drwxrwxrwx    2 0        0            4096 Apr 10 03:38 Optiplex745WinXPconfiguredApril2015
drwxrwxrwx    2 0        0            4096 Apr 10 03:39 dev
drwxrwxrwx    2 0        0           16384 Apr 07 01:58 lost+found
drwxrwxrwx    2 0        0            4096 Apr 08 00:59 postdownloadscripts
226 Directory send OK.
ftp> put test.txt
local: test.txt remote: test.txt
227 Entering Passive Mode (10,0,0,3,132,59).
150 Ok to send data.
226 Transfer complete.
29 bytes sent in 0.000114 secs (254.39 Kbytes/sec)
ftp> ls
227 Entering Passive Mode (10,0,0,3,118,48).
150 Here comes the directory listing.
drwxrwxrwx    2 0        0            4096 Apr 10 03:38 Optiplex745WinXPconfiguredApril2015
drwxrwxrwx    2 0        0            4096 Apr 10 03:39 dev
drwxrwxrwx    2 0        0           16384 Apr 07 01:58 lost+found
drwxrwxrwx    2 0        0            4096 Apr 08 00:59 postdownloadscripts
-rw-r--r--    1 1000     1000           29 Apr 30 00:29 test.txt
226 Directory send OK.
ftp> get test.txt
local: test.txt remote: test.txt
227 Entering Passive Mode (10,0,0,3,190,81).
150 Opening BINARY mode data connection for test.txt (29 bytes).
226 Transfer complete.
29 bytes received in 0.000529 secs (54.82 Kbytes/sec)
ftp> delete test.txt
250 Delete operation successful.
ftp> exit
421 Timeout.
[administrator@D620 ~]$ 

Try to get a file with Windows:

Explanation of the code below:

• Create a file with some data

• Start FTP

• Open connection to FOG server

• Enter username

• Enter password

• Upload file

• List directory to verify

• Download file

• Close connection

• Close FTP.

c:\SomeFolder>echo This is a bit of text to throw into a file > text.txt

c:\SomeFolder>ftp
ftp> open 10.0.0.3
Connected to 10.0.0.3.
220 (vsFTPd 3.0.2)
User (10.0.0.3:(none)): fog
331 Please specify the password.
Password:
230 Login successful.
ftp> put text.txt
200 PORT command successful. Consider using PASV.
150 Ok to send data.
226 Transfer complete.
ftp: 45 bytes sent in 0.00Seconds 22.50Kbytes/sec.
ftp> ls
200 PORT command successful. Consider using PASV.
150 Here comes the directory listing.
text.txt
226 Directory send OK.
ftp: 10 bytes received in 0.00Seconds 10.00Kbytes/sec.
ftp> get text.txt
200 PORT command successful. Consider using PASV.
150 Opening BINARY mode data connection for text.txt (45 bytes).
226 Transfer complete.
ftp: 45 bytes received in 0.00Seconds 45000.00Kbytes/sec.
ftp> close
221 Goodbye.
ftp> quit

c:\SomeFolder>

FTP Service

Fedora 20/21

• Check the status of FTP with

systemctl status vsftpd.service

(should be on and green, no errors, and enabled)

• stop, start, disable and enable FTP service.

systemctl stop vsftpd.service
systemctl start vsftpd.service
systemctl disable vsftpd.service
systemctl enable vsftpd.service

• Test that it’s functioning by using the testing instructions at the top of this article

additionally, if you open a web browser and go to

ftp://x.x.x.x

• Use fog / your-fog-account-Password for the credentials
• You should see “Index of /”

Ubuntu

• Check the status of FTP with

service vsftpd status

(should be on and green, no errors, and enabled)

• stop and start FTP service.

service vsftpd stop
service vsftpd start

• Enable and disable are not available due to this service being in the Upstart scripts.

• Test that it’s functioning by using the testing instructions at the top of this article additionally, if you open a web browser and go to

ftp://x.x.x.x

• Use fog / your-fog-account-Password for the credentials
• You should see “Index of /”

FTP Settings File

Fedora 21:

Location:

/etc/vsftpd/vsftpd.conf

To display file:

cat /etc/vsftpd/vsftpd.conf

It should look a lot like this:

anonymous_enable=NO
local_enable=YES
write_enable=YES
local_umask=022
dirmessage_enable=YES
xferlog_enable=YES
connect_from_port_20=YES
xferlog_std_format=YES
listen=YES
pam_service_name=vsftpd
userlist_enable=NO
tcp_wrappers=YES
seccomp_sandbox=NO

To edit:

vi /etc/vsftpd/vsftpd.conf

Explanation of settings:

man vsftpd.conf

Ubuntu

Location:

/etc/vsftpd.conf

To display file:

cat /etc/vsftpd.conf

It should look a lot like this:

anonymous_enable=NO
local_enable=YES
write_enable=YES
local_umask=022
dirmessage_enable=YES
xferlog_enable=YES
connect_from_port_20=YES
xferlog_std_format=YES
listen=YES
pam_service_name=vsftpd
userlist_enable=NO
tcp_wrappers=YES
seccomp_sandbox=NO

To edit:

vi /etc/vsftpd.conf

Explanation of settings:

man vsftpd

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Instructions on using Vi: Vi

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Disable & Verify Firewall

Fedora 20/21/22/23

Disable/stop Firewall

systemctl disable firewalld.service

systemctl stop firewalld.service

Can be undone with "start" and "enable".

Check Firewall in Fedora 20/21/22/23

systemctl status firewalld.service

Fedora 16

Add /bin/bash to /etc/shells as the vsftpd yum install does not do it correctly causing tftp timeout message

Debian/Ubuntu

sudo iptables -L

If disabled, the output should look like this:

Chain INPUT (policy ACCEPT)
target prot opt source destination 

Chain FORWARD (policy ACCEPT)
target prot opt source destination 

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

Disable Ubuntu Firewall

sudo ufw disable

Disable Debian Firewall

iptables -F
iptables -X
iptables -t nat -F
iptables -t nat -X
iptables -t mangle -F
iptables -t mangle -X
iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
iptables -P FORWARD ACCEPT

Other debian settings:

/etc/hosts.deny

This setting in the above file will deny traffic from any source except locally:

ALL:ALL EXCEPT 127.0.0.1:DENY

Comment out this line like so:

#ALL:ALL EXCEPT 127.0.0.1:DENY

Windows 7

Start -> Control Panel -> View by "Small icons" -> Windows Firewall -> Turn Windows Firewall On or Off -> Turn off all three.

Configuring firewall on Linux

To set the firewall for Linux to only allow what is necessary, please see the FOG security article.

Permissions

The credentials used for this:

Storage Management -> Storage Node -> Management Username / Management Password

Should exactly match the ownership of the /images directory and all of it's contents.

ls -laR /images

(add comparative picture here, with the ownership and username highlighted and linked, with the text "Should be the same")

Common problems and fixes

My problem isn't in the WiKi!

If you have a problem with FOG, or have a solution to a problem with FOG, please visit the forums for help or to report your solution. We try to keep the WiKi updated with things found in the forum. You can visit the forum here: FOG Forums

Images stuck in /images/dev

Images upload and are stored in /images/dev/[mac address of host] and they're never moved to /images

Error messages on client like "FTP move failed", "FTP error" after upload completes.

Solutions:

Ensure that storage node username and password (inside web interface's Storage Management) is configured. Make sure the path is correct. The username and password for the storage node should be identical to a local user on your FOG server.

You can reset a local Linux user's password like this:

sudo passwd <user>

To change the local fog user's password:

sudo passwd fog

Also, if you need to, just change the Fog user's password, and then update the password inside the storage node.

Images won't finish uploading, won't go past "Clearing ntfs flag"

This is permissions related. See forum threads for more details:

stuck-after-clearning-ntfs-flag

imaging-stuck-on-upload-after-finished

List permissions:

ls -laR /images

Fix permissions: Use the correct OS user, and correct storage node password to change ownership and give read/write/execute to everyone. Assumes user is "fog".

chown fog -R /images
chmod -R 777 /images

Changing ownership with user AND group (replace "user" and "group" with actual values):

chown user:group -R /images

Image Upload: Error Checking Mount

Please see Image Capture: Error Checking Mount