How to resolve Apache error log by directory?

August 25, 2020 by Charles Avitia

 

You should read these troubleshooting ideas when you get the Apache error log from a directory error message.

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The Apache error log records information about any errors or anomalies found. Most of the Apache registration "errors" are usually minor, for example: B. A visitor asks for a file that does not exist.

 

 

Access And Error Logs

The Apache Log is a record of events that have occurred on your Apache web server. Apache stores two types of logs:

Contains information about requests sent to the web server. This information may include which pages users visit, how successful the requests were, and how long it took to respond to the request. It looks like this:


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Contains information about errors encountered by the web server while processing requests, for example: B. if files are missing. It looks like this:



Access and error log files are stored on separate web servers. The exact location of the Apache logs depends on your operating system:

General Configuration

Note for a specific level. The levels are listed in descending order of importance. When triggered, the configured log level logs all events of that level or higher.

Apache offers a lot of flexibility in what you can save. For a complete description of the Apache protocol fields listed here, see the Apache protocol documentation.

[quote]% a - RemoteIPOrHost% A - LocalIPOrHost% b or% B - size% D - RequestTimeUs (microseconds)% h RemoteIPOrHost% k - KeepAliveRequests% l - RemoteLogname% r - Request%> s - HttpStatusCode% t - eventTime% T - RequestTimeSeconds% u - RemoteUser% U - UrlPath% v VirtualHost% X - ConnectionStatus% {Referer} i - Referer% {User-Agent} i - UserAgent% {UNIQUE_ID} e - UniqueId% {X-Forwarded- For} i - XForwardedFor% {Host} i - Host [ / quote]

You can customize your own template in the Apache configuration file and then define where these logs should be written. Here is an example of the magazine format you can choose from. See mod_log_config documentation for more information.


How do I find the server error log?

Enabling Error Logs

Find the STATISTICS & REPORTS menu. Then click Report Options & Logs. To enable error logs, click the Enabled button. This will allow your server to start logging errors.


These are some of the most valuable log fields for monitoring server health or troubleshooting problems. You should consider including them in the Apache log format.

These standard directives can be thought of as a formatting recipe that is assigned an alias and is used with the CustomLog directive. A format string is a series of identifiers, preceded by "%" and an identifier.

The identifier displayed in the form% {Referrer} i means the value of a variable of type "i", which in this case means the content of the "Referrer" request header. "I" indicates the content of the headerrequest.

The
apache error log per directory

"vhost_combined" specified after the format string in the following example is simply the name assigned to the format. Apache calls these "nicknames". Its use with the CustomLog directive looks like this: CustomLog . This will save the format represented by the alias to the specified location in the log.

Most log management solutions can automatically scan any field in the Apache log line. If your format doesn't support it or doesn't support the format you want, you can also hook up to JSON. It is a more flexible format that allows you to define your own fields. This is also self-documenting because key names describe data. The main disadvantage is that when you add key names to each message, your logs take up more space. Here is an example of a possible format. You add it to your Apache config file as described in the section above.



The vhost combined access protocol default configuration allows combined access protocol for these virtual hostsgoods without specific site configuration. Change this configuration if you want a new location.

The logging configuration for overwriting a virtual host (vhost) is shown in the corresponding allocation tables below. If you duplicate these default files for a specific vhost configuration, change the default protocol specification to vhost specific protocols if necessary. If you leave the default specification, all virtual host access and error log entries will be logged to Apache by default.

Debian / Ubuntu / Linux Mint Configuration

The following standard configuration guidelines are provided when there is no specific host virtual container configuration for the Linux distributions listed.


What are some of the logs maintained by Apache?

Apache server has two logs: error log and access log.


 

 

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