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Error Log
This is a collection of errors produced by the Apache HTTP Server and written to the error log. When you receive an error in your browser, always check the error log for more details on the problem. If you can't find your error log, try consulting DistrosDefaultLayout.
A comprehensive database of all 3000+ error messages (and, in many cases, how to fix them) is at httpd.rcbowen.com/errors.
Click on each link for more information about each of these error messages
A | AcceptEx Failed | AcceptExFailed | ||
Attempt to invoke directory as script | DirectoryAsScript | |||
C | Client denied by server configuration | ClientDeniedByServerConfiguration | ||
Could not determine the server's fully qualified domain name... | CouldNotDetermineServerName | |||
Could not bind to address 0.0.0.0:80 | CouldNotBindToAddress | |||
E | (8)Exec format error: exec of '...' failed | ExecFormatError | ||
F | File does not exist: /usr/local/apache/htdocs/favicon.ico | |||
(38)Function not implemented: core_output_filter: writing data to the network | SendfileNotImplemented | |||
I | Invalid argument: core_output_filter: writing data to the network | InvalidArgumentCoreOutputFilter | ||
Invalid command 'AuthDigestFile', perhaps misspelled... | InvalidCommandAuthDigestFile | |||
Invalid method in request \x80j\x01\x0\ | ||||
M | Mixing ports (* and non-* ports) | VirtualHostsMixingPorts | ||
N | (28)No space left on device: Cannot create SSLMutex | |||
(2)No such file or directory: Failed to enable the ‘httpready’ Accept Filter | HttpreadyAcceptFilter | |||
P | (13)Permission denied | |||
(13)Permission denied: /.../.htaccess pcfg_openfile: unable to check htaccess file, ensure it is readable | PcfgOpenfile | |||
Premature End of Script Headers | PrematureEndOfScriptHeaders | |||
proxy: ap_get_scoreboard_lb(1) failed... | ApGetScoreboardLb | |||
proxy: No protocol handler was valid for the URL... | ||||
S | Session Cache is not configured |
Access Log
Some things you may see in your access log, linked to their explanations:
- Requests for sites other than your own: ProxyAbuse
- Requests from the server to itself: InternalDummyConnection
- Response sizes don't equal bytes sent: ResponseSize
- What does the status code mean? CommonHTTPStatusCodes
Startup Failure
Be aware that if httpd cannot access its log directory (perhaps /var/log/httpd or a symlink in /etc/httpd/logs) it will not start up or even log a message.