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The best places to check for Plesk problems are:
[http://kb.parallels.com/en/111283 Service logs and configuration files for Linux]
[http://kb.parallels.com/en/111289 Service logs and configuration files for Windows]
== [[Plesk_Fatal_Exception | Plesk Fatal Exception]] ==
If you get Plesk diagnostics on Plesk 9, restart sw-cp-server via [[SSH]].
== [http://kb.parallels.com/8665 Plesk Spider Tool] ==
* Enable the following options in PRODUCT_ROOT_D/admin/conf/php.ini and restart psa: 'display_errors = On', 'log_errors = On'. Then check error messages in the log file /var/log/sw-cp-server/error_log
* Plesk's default root directory is /usr/local/psa/
* The file that declares the paths to be used by services and utilities is /etc/psa/psa.conf
* To change the default TCP port used to access Plesk change the value in /etc/sw-cp-server/applications.d/plesk.conf
* The directory containing the application packages used in Plesk Panel is $PRODUCT_ROOT_D/var/apspackages/
* The general psa database structure is in $PRODUCT_ROOT_D/etc/db/
* The DNS zone files for domains are stored in $NAMED_RUN_ROOT_D/var/
* You can restore the configuration of mail server and mail accounts via $PRODUCT_ROOT_D/admin/sbin/mchk
* To prevent users from running tasks on behalf of root, create one of the following files: $PRODUCT_ROOT_D/var/root.crontab.lock , $PRODUCT_ROOT_D/var/crontab.lock , $PRODUCT_ROOT_D/var/root.event_handler.lock , $PRODUCT_ROOT_D/var/event_handler.lock or $PRODUCT_ROOT_D/etc/root.psa_db.sql.lock
* GUI engine configuration file is in etc/sw-cp-server/applications.d/
== [[Plesk 11]] ==
Removing a domain/subscription shows Internal Server Error. Within /var/log/sw-cp-server/error_log it may show something like:
2012-07-05 09:39:09: (mod_fastcgi.c.2613) unexpected end-of-file (perhaps the fastcgi process died): pid: 10809 socket: unix:/usr/local/psa/tmp/sw-engine.sock-0
2012-07-05 09:39:09: (mod_fastcgi.c.3400) response not received, request sent: 2001 on socket: unix:/usr/local/psa/tmp/sw-engine.sock-0 for /admin/index.php?redirect=/subscription/list/, closing connection
This normally happens when you remove Hosting from a domain. Go into the domain, Websites & Domains tab, click Add next to the domain, select Website hosting, re-add a FTP user/password and click OK.
== The validity period of client account... ==
If you get this message in Plesk 9:
"''The validity period of client account '' (Contact Name '') is about to expire. The client account and all of related domains will be deactivated by unless the validity period is prolonged.''"
Check via [[SSH]] with /usr/local/psa/bin/domain_pref -i domain.com | grep -i expir
To alter this, go into Plesk and go to:
* Clients
* Tick the client you have been warned about
* Modify
* Scroll to the bottom
* Set the Expiration date to Unlimited in the drop down box
* Click OK
If this doesn't work, do:
== PMM Folder ==
'''PMM stands for Plesk Migration Manager.''' It can use quite a bit of disk space. If a backup or restoration has been successfully completed and now all works (or is older than a few days) you can remove this data in /opt/psa/PMM ( /usr/local/psa/pmm/tmp ).
== Creating folder ==
If you go into Plesk's file manager and try to create a directory within:
You will get the error ''''Unable to create directory //test: filemng: Error occurred during /bin/mkdir command''''. This is because unless you go in via command line/RDC and create the folder manually or create a domain with the folder as it's document root '''it will not allow it'''.
== IP Pool Empty ==
When trying to add a subscription and it comes back with the error "'''The IP Pool is empty'''" this means the IP/s under Tools & Settings > IP Address is/are set to Dedicated. It/they need to be switched to Shared.
Get the owner name from within:
* Main Menu - Clients
* Click the client under Client's name
* Account - Personal Data
* The owner is the entry in the Login* field.
[http://download1.parallels.com/Plesk/PP11/11.0/Doc/en-US/online/plesk-unix-cli/index.htm?fileName=60260.htm IP Pool Guide]
[http://kb.parallels.com/en/9658 Plesk 10 instructions/prevention]
You can try the following. Sometimes it breaks the IP addresses (setting it back will fix it if it breaks), sometimes it will work.
Then pick the entry you want to change from exclusive/dedicated to shared.
If you get the message "''There are no resources of this type (domains) available from your Service Provider. Requested: 1; available: 0. The notification has been sent to your Service Provider.''" when trying to add a domain in bullet points above field, go to:
* Main Menu - Settings
* General - License Management
* ''Maximum number of domains'' will likely be a low number and you have a domain limit you are trying to exceed.
* Therefore you need to buy a new license key for Plesk.
== Changing subscriber fails ==
If when you go to Hosting Services - Subscriptions > tick a domain > Change Subscriber > select the circular radio button next to the customer > click Next >> you get the below:
Remember the value in string '00'. This can happen due to No web hosting [add] in Websites & Domains. Then do:
If the entry does not exist, you need to remove the subscription in Plesk. '''Make a note of the FTP username first and any Databases and their usernames'''. You can back the websites databases up by doing this in MySQL:
Re-add the Subscription however you may get the error below:
If not carry on. If you do get the error, do the following:
And then try re-add the Subscription and assign it to the Customer/Subscriber you want to.
== [http://kb.parallels.com/en/112887 Domains area is blank] ==
== Websites & Domains tab is blank ==
Or it will show the below error:
''Internal error: Unable to execute serverconf: terminate called after throwing an instance of 'plesk::Exc
' what(): '''Execution of hostname -f failed''' with return code 1. Stderr is hostname: Unknown host''
Hostname -f or --'''fqdn''', --long means long host name '''(FQDN)''' , from using hostname --help
Plesk will try to use your hostname to load parts of Plesk using a '''Fully Qualified Domain Name (FQDN)''' at domain.com:8880 over http, this in turn will try to redirect to IP:8443 or domain.com:8443 and will fail. In [[SSH]] if you do hostname -f and then ping the result, if this does not resolve you will get the error above.
To resolve this, go to either:
* Server Management > Tools & settings > General Settings > Server Settings > set Full hostname to a domain name
* Server tab > General Settings > Server Settings > set Full hostname to a domain name
== Default IP Address ==
If you are on Plesk 9 and within Settings > General - IP Addresses the IP Address is set to Exclusive or Shared and cannot be changed, [[SSH]] into the server and do:
== Migration Fails ==
This can be caused because on the old VPS the Migration Agent is not running, this can be downloaded onto the server via RDP on Windows/cmd or using wget on Linux at:
- http://www.parallels.com/uk/download/plesk10.3/ (Check Notes for log
- Allow in Tools > Internet Options > Security > Trusted Sites (add parallels.com and *.parallels.com) for Windows
- Scroll to bottom of page
- Download the MSI (for Windows) or the TAR (for Linux)
- Ensure Firewall is off on old and new VPS
- Install
- Do not log off, just X the RDP session after Migration Agent is running.
http://kb.parallels.com/807
NOTE: You can partly migrate from Linux to Windows but migration from Parallels Plesk Panel Windows to Parallels Plesk Panel UNIX is not supported.
Migration Manager uses SSH protocol for uploading of migration agents to source server and dump files retrieving. Make sure that:
1) SSH server is running and SSH (22) port is opened on the source server (you are performing the migration from),
2) SSH server on the source server allows connecting it with SSH version 2 protocol,
3) you are able to login from destination server to the source one via SSH under the user you specified during the migration. Also check that you can transfer a file from the source server to the destination Parallels Plesk Panel server with scp command.
Migrating from earlier versions of Plesk Panel, refer to: http://download1.parallels.com/Plesk/PPP9/Doc/en-US/plesk-9.2-migration-guide/index.htm?fileName=63282.htm
Manual Migration: http://kb.parallels.com/1152
== mod_fcgid: read data timeout ==
mod_fcgid: read data timeout in 45 seconds, referer: https://www.website.com/file.php
FcgidIOTimeout 45
http://www.moe.co.uk/2009/08/17/php-running-under-mod_fcgid-read-data-timeout-in-40-seconds-on-plesk
http://rickchristie.com/blog/2011/note/apache-mod_fcgid-read-data-timeout-error
== SSO (Single Sign On) ==
If a Plesk login URL redirects to a relay or unusual URL, this is caused by the '''[http://kb.parallels.com/en/5978 SSO service]''' and configuration files which can be caused when the Customer Billing section is installed. To re/enable SSO use --enable in place of --disable below. To disable SSO use:
http://en.wikipedia.org/wiki/Single_sign-on
http://forum.parallels.com/printthread.php?t=87460
Also try using the command to check encrypted/decrypted plesk password. It is advised NOT to manually configure hosts files as this can also cause conflicts, as within etc/hosts there is the relay to the URL it was taking you to. If you would like to ensure this does not cause issues simply change the URL within there to your VPS hostname. The SSO service has been disabled and now allows you to login to Plesk for your server at it's IP address.
== Panel Missing and Applications ==
Check these locations to check, start it or patch/update it:
netstat -nap | grep 8443 (to check for network activity on Plesk's port). If it is not there, rebuild the VPS.
The error "''Update operation was locked by another update process''" means you need to ps aux | grep auto and kill the processes and then run autoinstaller again. If the Applications are missing from the Applications tab, go to Tools and Settings > Application Vault > Clear Cache
When upgrading Plesk from 10.2 to 10.4.4 you may get: "There are customized DNS records with host equal host of existing subdomain, they will lost after upgrade to Plesk version above 10.4.4. Check http://kb.parallels.com/en/113310 for more details."
[http://www.martinglover.co.uk/plesk-error-nightmare-failed-to-run-the-pleskctl-utility/ Failed to run the pleskctl utility]
== Unable update mailbox mailmng failed ==
This can happen on both Windows and Unix:
[http://forum.parallels.com/showthread.php?t=260790 Unix], [http://www.userdel.org/?p=26 Details], also try /usr/local/psa/admin/sbin/mchk
[http://kb.parallels.com/en/977 Windows], [http://24x7servermanagement.com/blog/?p=237 A different fix]
This is a unfixable bug as of 12/12/12 for Debian based x86_64, with a fix presumed next week: http://forum.parallels.com/showpost.php?p=659020&postcount=66
== MainDBException ==
The below error normally affects Windows servers, and you should look in the following file to see if port=8306 and is referencing the right file paths:
Check Windows Firewall is not causing the issue by turning each one (or all) off and try Plesk, check if the Plesk SQL Service service can start/restart via Services.msc
Also check the third tab along to see if Plesk MySQL Server is ticked (under venet0).
http://forum.parallels.com/pda/index.php/t-113419.html
If you get:
ERROR: PleskMainDBException
MySQL query failed: Table 'psa.skins' doesn't exist
Check the directive in the my.cnf file on the server
lower_case_table_names = 1
The Plesk PSA database uses table names that start with a capital letter. With the above directive set to 1 (enabled) any queries are converted to lower case. As MySQL is case sensitive, this causes Plesk to look for a table called skins not Skins. Hence the failure. Disable the directive in the my.cnf file, restart the server and check the Plesk panel is up and running normally now. Ensure you do not change the directive or it will break again.
'''If you see the below error, look''' [http://kb.parallels.com/en/112521 here]:
'''The error below needs a fix:'''
ERROR: PleskMainDBExceptionUp LevelMySQL query failed: Table 'psa.lockout' doesn't exist
0: common_func.php3:206db_query(string 'delete from lockout where (UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(last_wrong)) > (30 * 60)')1: cmd_loginup.php:82createSession(string 'admin', string '*********')2: login_up.php3:22
ERROR: PleskMainDBException
An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full.
'''If you see this error, to be fixed:'''
0: common_func.php3:637
reconnect()
1: common_func.php3:600
db_connect()
2: auth.php3:129
ERROR: PleskMainDBException
An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full.
0: common_func.php3:637
reconnect()
1: common_func.php3:600
db_connect()
2: auth.php3:129
== PleskDBException ==
Hosting Services > Domains > Manage Hosting
http://kb.parallels.com/en/113826
Updating Plesk will '''NOT''' solve this problem.
== Zend_Db_Statement_Exception ==
This happens when retrieving the password using /usr/local/psa/bin/admin --show-password . Disk space is full normally. Run df -h to find out or go [Resource_Usage | here].
ERROR: Zend_Db_Statement_Exception
SQLSTATE[HY000]: General error: 1030 Got error 122 from storage engine
== Plesk Application tab empty ==
Check the log file /var/log/sw-cp-server/error_log to see if it contains the following entry:
2011-07-14T15:30:26+01:00 ERR (3): APS Catalog error: Unable to define main IP address
Check if the IP addresses have the true or main attribute in Plesk Panel database:
Identify main IP address on the server:
Mark it as that in IP_Addresses table:
--------------------------------------------------------
-------------------------------------------------------
Alternative solution:
1) Check how many applications there are in 'Application vault' under 'Tools & utilities'.
2) Check how many how are getting in the folder '/usr/local/psa/var/apspackages' eg:
3) Move the packages you got from this folder, /usr/local/psa/var/apspackages, to some other location.
4) Then try to 'clear cache' in 'Application vault' under 'Tools & utilities'.
5) Then you will get error regarding some packages which are missing. eg:
Internal error: Cannot find package cache directory: '/usr/local/psa/var/apspackages/apscatalogSWLhgA.zipf66f54dc-9b23-f4'
6) Move those missing packages only to the folder location '/usr/local/psa/var/apspackages'.
For example 'apscatalogSWLhgA.zipf66f54dc-9b23-f4'
See the error in panel, Internal error: Cannot find package cache directory: '/usr/local/psa/var/apspackages/apscatalogSWLhgA.zipf66f54dc-9b23-f4'
7) After that 'clear cache' in 'Application vault' under 'Tools & utilities'. This will remove the temporary files.
Then the Applications will be available in the domain control panel without any issues.
== [http://kb.parallels.com/en/111985 Unable to modify admin's personal info] ==
== Webmail shows Parallels holding page ==
If this happens ensure mail in Change Settings is on, the webmail and mail DNS records go to the VPS and then attempt to go into Plesk' DNS settings. If it shows:
and then
you need to recreate the subscription.
== Service Unavailable ==
If you get the following message:
See [http://kb.parallels.com/en/6735 this] guide. Restart Plesk via services.msc and ensure the firewalls allow port 8843 through them.
== [http://shaun.net/blog/solving-plesk-10-3-1-cron-issues Cron runs via SSH but not Plesk] ==
Run this if the server is 10.1+:
== Attention, The update of Parallels Panel has failed. ==
It's possible that Plesk may be completely inaccessible via the browser at this stage. The logs are located on the server at /tmp/autoinstaller3.log - it should say what has failed there.
You may wish to try running a repair on Plesk, using the following:
/usr/local/psa/bootstrapper/pp10.13.4-bootstrapper/bootstrapper.sh repair
(the name of the '/pp10.13.4-bootstrapper/' directory may vary depending on the currently installed version).
If that command works then you should find that Plesk is available again - it'll be back to the version prior to the upgrade attempt.
If you then want to run the upgrade manually, you can do this using:
/root/parallels_installer --select-product-id=plesk --select-release-latest
== Failed to connect to sitebuilder ==
Fix: http://kb.parallels.com/en/9491
cd %plesk_dir%\admin\plib\report
Running task: C:\Program Files (x86)\Parallels\Plesk\admin\bin\php.exe -q -dauto_prepend_file="" -c php.ini "C:\Program Files(x86)\Parallels\Plesk\admin\plib\DailyMaintainance\script.php"
Started: Tue Nov 20 05:05:04 2012
The task output is attached to the e-mail Ended successfully: Tue Nov 20 05:06:19 2012
The output file (which I've also attached) states the following error:
! 0 Error: Failed to connect to sitebuilder - missing or incorrect C:\Program Files (x86)\Parallels\Plesk\/sb/include/init.php
2012-11-20T05:06:19+00:00 ERR (3): Failed to connect to sitebuilder - missing or incorrect C:\Program Files(x86)\Parallels\Plesk\/sb/include/init.php