Error writing log file apache

The Apache access log records data for every request processed by the Apache server. The Apache access file helps you become a better web admin, and some of the scenarios it can come through for you are:. Scala Hosting users can quickly find their Apache access file in their SPanel home directory or logging in to their remote server via SSH access.

Please input your email address or username and password to log in. Scroll through your home directory till you get to the access. To find your Apache access log via this option, connect to your remote server via SSH and run the command below.

Making sense of the access log requires knowing how Apache logs the file. The Custom log directive or module lets you define within your Apache config file where you want to store the log and the format you want Apache to log the access entries. Understanding the Apache access log format demystifies reading the log. The log format returns Apache access log entries that are similar to the one below:. The Apache error log records data for all issues encountered by the Apache server.

Most of the errors in Apache logs are minor issues, such as missing files. However, it also uses the error file to record diagnostic information about the server or warnings indicating potential problems with a particular event or configuration. The location of your error log may vary depending on your Linux distribution, but you can run the grep command to find its exact location —.

I am on Ubuntu Improve this question. GhotiPhud GhotiPhud 1 1 gold badge 15 15 silver badges 18 18 bronze badges. What I mean to say is that, my "application debug 3" didn't make it to the error. Where is that line in your code? That line is in my. Everything in that file seems to be executed when I restart apache. Maybe I'm mistaken? See ' code. Add a comment. Active Oldest Votes. It is possible to have multiple Apache access logs at the same time without any additional effort.

We may want a limited set of information available in some files for quick scanning and the full log using the Combined Log Format if we need the complete information.

For example, we could have three access log files — one that includes time, user agent, and the status code, the second that includes the time, IP address, and referrer used, and the third — the Common Log Format. To do that we need to include multiple CustomLog sections in our configuration file:. This is also possible and very convenient when the formatting of the log lines is used only in that given file.

There are cases when you would like to write logs only when a certain condition is met. This is what Apache Server calls conditional logging. It is done by using the CustomLog directive and environment variables. For example, if you would like to log all requests accessing your PNG files in a separate file you can do that the following way:. Depending on the logging configuration and the traffic that your Apache servers are handling, logging can be extensive. All the logs that you keep on the machine take space and if you are not using a log centralization solution like Sematext Logs, you will have to deal with space and management of logs.

Log rotation is a process of creating a new log file that the Apache HTTP server will start writing to and renaming the old log file, so it is no longer updated. The log rotation happens when you gracefully restart the server. That means that without any kind of client requests processing interruption a new log file is created.

In production environments, you would like to restart the Apache servers though. Instead of writing the log events to a file, you use the piped logs to send the log events to a different application that will handle the log processing — for example to rotatelogs :.

The rotatelogs application comes with Apache server and is capable of rotating logs without the need of restarting the server. Apache server access logs are just simple text files. They can be easily opened by any tool that can read such files. On Linux-based systems, this can be the cat command-line tool or tail if you want to monitor the log lines as they go. There are two caveats, though.

The first is access policies. You may not have access to the machines running Apache HTTP server and even if you do, you may not have read access to the appropriate log directories. The second is distribution. It is not uncommon to have multiple Apache servers distributed across multiple data centers.

We can see that the real problem with my web server is no favicon and my browser is very upset about it. You can change the format of log messages too. You specify the message composition with the ErrorLogFormat setting. The setting is a format string with parameters corresponding to fields in a logging event. It omits them. You can specify different formats for new connections and new requests.

A connection is when a new client connects to the server. A request is a message asking for a resource, such as a page or an image. Apache uses connection and request formats when a new client connects or makes a web request. It logs a message indicating that a client has connected or registered a new request.

You can specify more than one connection or request log entry if you want to print information in separate listings. You can take logging messages for new connections and requests one step further. The Apache error log will generate a unique identifier for every new request or connection. You can use this value to collate log entries. Finally, we add the IDs to each standard log entry.