Apache logs provide vital information about the requests the web server is serving out as well as application errors. In order to effectively manage a web server, it is necessary to get feedback about the activity and performance of the server as well as any problems that may be occurring.
With Loom Systems you get deep-level visibility into each of your web server process and running application errors. When problems are detected, the Loom systems anomaly-detection engine correlates between the different services and identifies the root causes.
Just configure Rsyslog to see the all events you need. For Apache, Loom Systems shows you two type of apache server logs files: Error Logs and Access Logs.
Loom will transform your data into insightful information, is not just a aggregation of your Access Logs or Error Logs, Loom lets you:
Monitor across disparate sets of Apache data and uncover hidden business opportunities and issues.
You will be alerted on any abnormal customer sessions and behavior, with correlations across your web servers and other parts of the application tier (for example you data base)
In real time, you will discover and resolve bottlenecks in your application.
Investigate any visitor activity, drill down to the smallest activities in any time frame.
To find issues that may require closer attention, explore the capabilities of a SaaS analytics service like Loom Systems, which uncovers insights that are easily overlooked by the human eye and difficult to find via basic logging.
Loom will automatically extract the following metrics:
Geographic location of users
404 and 500 errors
By using Loom Apache Server integration you will also benefit with:
Real Time Alert of critical or abnormal system activity or user behavior
Automatically Monitor and Detect trends in system events, user activity and more
Interactive visualization of trends and detect anomalies and patterns
Centralize your logs for aggregation and correlation activities
Search across and analyze all logs in your infrastructure stack with robust search and advanced analytics capabilities
Apache logs contain critical data on your users. The right analysis of your Apache logs can help you move from reactive to proactive. Loom Systems detects anomalies (deviations from the established baseline) and flags exceptions in real-time to help you identify real and potential threats.
When you use Loom Systems as an Apache security log analytics, you will automatically receive alerts contains:
Abnormal user activities in the organization assets.
Identify the ports and protocols typically used.
Receive alerts based on behavioral changes.
Loom systems collects metrics and logs from your Apache web server and correlates it with the rest of your applications. Loom is seeing your website as your customers do!
CPU saturation slowing down your database, your services, and your website?
You’ll receive a single notification that addresses the root cause of the problem, not multiple alerts for you to sort through and analyze. Using artificial intelligence, Loom systems detects performance anomalies before they affect customer experience.
Apache HTTP Server, commonly known as “Apache,” has been the world’s most popular web server software for 20 years running. Apache is a critical component in your web architecture that needs to be monitored.With Loom Systems you monitor and visualize Apache logs and metrics in the context of your web services that run on Apache.
Further details about Apache HTTP server logs can be found here.
1. Error Logs
The server error log is the most important log file. This is the place where Apache httpd will send diagnostic information and record any errors that it encounters in processing requests. It is the first place to look when a problem occurs with starting the server or with the operation of the server, since it will often contain details of what went wrong and how to fix it.
The apache log file contains a very wide variety of different messages which loom can easily ingest and provide an actionable insight.
Default error log file location:
RHEL / Red Hat / CentOS / Fedora Linux Apache error file location -/var/log/httpd/error_log
Debian / Ubuntu Linux Apache error log file location - /var/log/apache2/error.log
FreeBSD Apache error log file location - /var/log/httpd-error.log
To find exact apache log file location, you can use grep command:
# grep ErrorLog /usr/local/etc/apache22/httpd.conf
# grep ErrorLog /etc/apache2/apache2.conf
# grep ErrorLog /etc/httpd/conf/httpd.conf
2. Access Logs
Apache access logs provide information about the requests the web server is serving out. These logs are crucial to understand the types of request coming in, based on IP address, referrer, user agent (browser/operating system/device), request path, date/time, etc... Of course, storing the information in the access log is only the start of log management. The next step is to analyze this information to produce proactive insights. The location and content of the access log are controlled by the Custom Log directive.
Each part of this log entry usually contains the following metrics:
Remote Host- IP address of the client (remote host).
UserID- Userid of the person requesting the document as determined by HTTP authentication.
Request- The request line from the client is given in double quotes. The request line contains a great deal of useful information. First, the method used by the client is GET. Second, the client requested the resource /apache_pb.gif, and third, the client used the protocol HTTP/1.0. It is also possible to log one or more parts of the request line independently. For example, the format string "%m %U%q %H" will log the method, path, query-string, and protocol, resulting in exactly the same output as "%r".
Http Response Code- Status code that the server sends back to the client. This information is very valuable, because it reveals whether the request resulted in a successful response (codes beginning in 2), a redirection (codes beginning in 3), an error caused by the client (codes beginning in 4), or an error in the server (codes beginning in 5). The full list of possible status codes can be found Here.
Size- The last entry indicates the size of the object returned to the client. If no content was returned to the client, this value will be "-". To log "0" for no content, use %B instead.
* The format of the access log is configurable.
The location and content of the access log are controlled by the CustomLog directive. Default apache access log file location:
RHEL / Red Hat / CentOS / Fedora Linux Apache access file location -/var/log/httpd/access_log
Debian / Ubuntu Linux Apache access log file location - /var/log/apache2/access.log
FreeBSD Apache access log file location - /var/log/httpd-access.log
To find exact apache log file location, you can use grep command:
# grep CustomLog /usr/local/etc/apache22/httpd.conf
# grep CustomLog /etc/apache2/apache2.conf
# grep CustomLog /etc/httpd/conf/httpd.conf