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--- litespeed_wiki:php:503-errors [2019/02/27 16:29]
Jackson Zhang [Plesk 503 error]
+++ litespeed_wiki:php:503-errors [2019/03/19 20:30]
Jackson Zhang [Plesk 503 error]
@@ Line 378: / Line 378: @@
 ==== Plesk 503 error ====
-Some version of Plesk PHP, such as php71 and PHP56's buggy apcu module may cause 503 error on LSWS. Generally, only one object cache or value cache should be enabled, instead of two or more. It may cause conflicts between modules.  Disabling apcu module should fix the problem.
+Some versions of Plesk PHP, such as php71 and php56, have a buggy APCu module that may cause a 503 error on LSWS. Generally, only one object cache or value cache should be enabled. Enabling two or more may cause conflicts between modules.  Disabling the APCu module should fix the problem.
-Plesk Admin -> Tools and configuration -> PHP configuration -> 7.1.x FastCGI application -> Unselect "apcu" and " To ACCEPT"
+Navigate to **Plesk Admin > Tools and configuration > PHP configuration > 7.1.x FastCGI application**. Unselect ''apcu'' and press the **TO ACCEPT** button.
 {{ :litespeed_wiki:php:plesk-503-disable-apcu.png?800 |}}
+==== CPanel webdisk 503 errors ====
+You might see some errors like the following:
+-03-12 12:14:00.324041 [INFO] [51.68.79.11:54920:proxy] connection to [127.0.0.1:2077] on request #1, confirmed, 0, associated process: 0, running: 0, error: Connection refused!
+-03-12 12:14:00.324165 [INFO] [51.68.79.11:54920:proxy] connection to [127.0.0.1:2077] on request #1, confirmed, 0, associated process: 0, running: 0, error: Connection refused!
+-03-12 12:14:00.324194 [NOTICE] [51.68.79.11:54920:proxy] Max retries has been reached, 503!
+-03-12 12:14:00.324206 [INFO] [http://127.0.0.1:2077] request force stop: too many 503 errors
+when checking /etc/apache2/conf/httpd.conf
+   ProxyPass "/___proxy_subdomain_webdisk" "http://127.0.0.1:2077" max=1 retry=0
+It is cpanel webdisk service. If this webdisk service generated too many 503 errors, you might consider to disable it. To disable cpanel WebDisk, you can login WHM and disable ''cPanel DAV Daemon'' in Service Manager.
 ===== Advanced Troubleshooting Guide =====