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选题: 20190109 GoAccess – A Real-Time Web Server Log Analyzer And Interactive Viewer
sources/tech/20190109 GoAccess - A Real-Time Web Server Log Analyzer And Interactive Viewer.md
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[#]: collector: (lujun9972)
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[#]: translator: ( )
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[#]: reviewer: ( )
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[#]: publisher: ( )
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[#]: url: ( )
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[#]: subject: (GoAccess – A Real-Time Web Server Log Analyzer And Interactive Viewer)
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[#]: via: (https://www.2daygeek.com/goaccess-a-real-time-web-server-log-analyzer-and-interactive-viewer/)
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[#]: author: (Vinoth Kumar https://www.2daygeek.com/author/vinoth/)
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GoAccess – A Real-Time Web Server Log Analyzer And Interactive Viewer
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======
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Analyzing a log file is a big headache for Linux administrators as it’s capturing a lot of things.
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Most of the newbies and L1 administrators doesn’t know how to analyze this.
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If you have good knowledge to analyze a logs then you will be a legend for NIX system.
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There are many tools available in Linux to analyze the logs easily.
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GoAccess is one of the tool which allow users to analyze web server logs easily.
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We will be going to discuss in details about GoAccess tool in this article.
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### What is GoAccess?
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GoAccess is a real-time web log analyzer and interactive viewer that runs in a terminal in *nix systems or through your browser.
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GoAccess has minimal requirements, it’s written in C and requires only ncurses.
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It will support Apache, Nginx and Lighttpd logs. It provides fast and valuable HTTP statistics for system administrators that require a visual server report on the fly.
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GoAccess parses the specified web log file and outputs the data to the X terminal and browser.
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GoAccess was designed to be a fast, terminal-based log analyzer. Its core idea is to quickly analyze and view web server statistics in real time without needing to use your browser.
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Terminal output is the default output, it has the capability to generate a complete, self-contained, real-time HTML report, as well as a JSON, and CSV report.
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GoAccess allows any custom log format and the following (Combined Log Format (XLF/ELF) Apache | Nginx & Common Log Format (CLF) Apache) predefined log format options are included, but not limited to.
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### GoAccess Features
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* **`Completely Real Time:`** All the metrics are updated every 200 ms on the terminal and every second on the HTML output.
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* **`Track Application Response Time:`** Track the time taken to serve the request. Extremely useful if you want to track pages that are slowing down your site.
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* **`Visitors:`** Determine the amount of hits, visitors, bandwidth, and metrics for slowest running requests by the hour, or date.
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* **`Metrics per Virtual Host:`** Have multiple Virtual Hosts (Server Blocks)? It features a panel that displays which virtual host is consuming most of the web server resources.
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### How to Install GoAccess?
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I would advise users to install GoAccess from distribution official repository with help of Package Manager. It is available in most of the distributions official repository.
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As we know, we will be getting bit outdated package for standard release distribution and rolling release distributions always include latest package.
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If you are running the OS with standard release distributions, i would suggest you to check the alternative options such as PPA or Official GoAccess maintainer repository, etc, to get a latest package.
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For **`Debian/Ubuntu`** systems, use **[APT-GET Command][1]** or **[APT Command][2]** to install GoAccess on your systems.
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```
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# apt install goaccess
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```
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To get a latest GoAccess package, use the below GoAccess official repository.
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```
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$ echo "deb https://deb.goaccess.io/ $(lsb_release -cs) main" | sudo tee -a /etc/apt/sources.list.d/goaccess.list
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$ wget -O - https://deb.goaccess.io/gnugpg.key | sudo apt-key add -
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$ sudo apt-get update
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$ sudo apt-get install goaccess
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```
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For **`RHEL/CentOS`** systems, use **[YUM Package Manager][3]** to install GoAccess on your systems.
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```
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# yum install goaccess
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```
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For **`Fedora`** system, use **[DNF Package Manager][4]** to install GoAccess on your system.
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```
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# dnf install goaccess
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```
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For **`ArchLinux/Manjaro`** based systems, use **[Pacman Package Manager][5]** to install GoAccess on your systems.
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```
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# pacman -S goaccess
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```
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For **`openSUSE Leap`** system, use **[Zypper Package Manager][6]** to install GoAccess on your system.
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```
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# zypper install goaccess
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# zypper ar -f obs://server:http
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# zypper ref && zypper in goaccess
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```
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### How to Use GoAccess?
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After successful installation of GoAccess. Just enter the goaccess command and followed by the web server log location to view it.
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```
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# goaccess [options] /path/to/Web Server/access.log
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# goaccess /var/log/apache/2daygeek_access.log
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```
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When you execute the above command, it will ask you to select the **Log Format Configuration**.
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![][8]
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I had tested this with Apache access log. The Apache log is splitted in fifteen section. The details are below. The main section shows the summary about the fifteen section.
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The below screenshots included four sessions such as Unique Visitors, Requested files, Static Requests, Not found URLs.
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![][9]
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The below screenshots included four sessions such as Visitor Hostnames and IPs, Operating Systems, Browsers, Time Distribution.
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![][10]
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The below screenshots included four sessions such as Referrers URLs, Referring Sites, Google’s search engine results, HTTP status codes.
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![][11]
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If you would like to generate a html report, use the following format.
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Initially i got an error when i was trying to generate the html report.
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```
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# goaccess 2daygeek_access.log -a > report.html
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GoAccess - version 1.3 - Nov 23 2018 11:28:19
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Config file: No config file used
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Fatal error has occurred
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Error occurred at: src/parser.c - parse_log - 2764
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No time format was found on your conf file.Parsing... [0] [0/s]
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```
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It says “No time format was found on your conf file”. To overcome this issue, add the “COMBINED” log format option on it.
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```
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# goaccess -f 2daygeek_access.log --log-format=COMBINED -o 2daygeek.html
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Parsing...[0,165] [50,165/s]
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```
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![][12]
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GoAccess allows you to access and analyze the real-time log filtering and parsing.
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```
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# tail -f /var/log/apache/2daygeek_access.log | goaccess -
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```
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For more details navigate to man or help page.
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```
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# man goaccess
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or
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# goaccess --help
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```
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--------------------------------------------------------------------------------
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via: https://www.2daygeek.com/goaccess-a-real-time-web-server-log-analyzer-and-interactive-viewer/
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作者：[Vinoth Kumar][a]
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选题：[lujun9972][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.2daygeek.com/author/vinoth/
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[b]: https://github.com/lujun9972
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[1]: https://www.2daygeek.com/apt-get-apt-cache-command-examples-manage-packages-debian-ubuntu-systems/
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[2]: https://www.2daygeek.com/apt-command-examples-manage-packages-debian-ubuntu-systems/
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[3]: https://www.2daygeek.com/yum-command-examples-manage-packages-rhel-centos-systems/
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[4]: https://www.2daygeek.com/dnf-command-examples-manage-packages-fedora-system/
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[5]: https://www.2daygeek.com/pacman-command-examples-manage-packages-arch-linux-system/
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[6]: https://www.2daygeek.com/zypper-command-examples-manage-packages-opensuse-system/
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[7]: data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7
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[8]: https://www.2daygeek.com/wp-content/uploads/2019/01/goaccess-a-real-time-web-server-log-analyzer-and-interactive-viewer-1.png
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[9]: https://www.2daygeek.com/wp-content/uploads/2019/01/goaccess-a-real-time-web-server-log-analyzer-and-interactive-viewer-2.png
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[10]: https://www.2daygeek.com/wp-content/uploads/2019/01/goaccess-a-real-time-web-server-log-analyzer-and-interactive-viewer-3.png
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[11]: https://www.2daygeek.com/wp-content/uploads/2019/01/goaccess-a-real-time-web-server-log-analyzer-and-interactive-viewer-4.png
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[12]: https://www.2daygeek.com/wp-content/uploads/2019/01/goaccess-a-real-time-web-server-log-analyzer-and-interactive-viewer-5.png
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