================================================================
``ngxtop`` - **real-time** metrics for nginx server (and others)
================================================================

**ngxtop** parses your nginx access log and outputs useful, ``top``-like, metrics of your nginx server.
So you can tell what is happening with your server in real-time.

Can be used also with Apache log files (experimental). In this case, if not log format is specified, 'combined' will be
used. If the script doesn't detect redirections properly you can force it by using the '-s' option.

Installation
------------

::

    pip install ngxtop


Note: ``ngxtop`` is primarily developed and tested with python2 but also supports python3.

Usage
-----

::

    Usage:
        ngxtop [options]
        ngxtop [options] (print|top|avg|sum) <var>
        ngxtop info
        tail -f /var/log/apache2/access.log | ngxtop [-s]

    Options:
        -l <file>, --access-log <file>  access log file to parse.
        -f <format>, --log-format <format>  log format as specify in log_format directive.
        --no-follow  ngxtop default behavior is to ignore current lines in log
                         and only watch for new lines as they are written to the access log.
                         Use this flag to tell ngxtop to process the current content of the access log instead.
        -t <seconds>, --interval <seconds>  report interval when running in follow mode [default: 2.0]

        -g <var>, --group-by <var>  group by variable [default: request_path]
        -w <var>, --having <expr>  having clause [default: 1]
        -o <var>, --order-by <var>  order of output for default query [default: count]
        -n <number>, --limit <number>  limit the number of records included in report for top command [default: 10]
        -a <exp> ..., --a <exp> ...  add exp (must be aggregation exp: sum, avg, min, max, etc.) into output

        -v, --verbose  more verbose output
        -d, --debug  print every line and parsed record
        -h, --help  print this help message.
        --version  print version information.

        Advanced / experimental options:
        -c <file>, --config <file>  allow ngxtop to parse nginx config file for log format and location.
        -i <filter-expression>, --filter <filter-expression>  filter in, records satisfied given expression are processed.
        -p <filter-expression>, --pre-filter <filter-expression> in-filter expression to check in pre-parsing phase.
        -s, --from-stdin  read lines from stdin.
        -b, --db-dump  dump database to disk when finished

Samples
-------

Default output
~~~~~~~~~~~~~~

::

    $ ngxtop
    running for 411 seconds, 64332 records processed: 156.60 req/sec

    Summary:
    |   count |   avg_bytes_sent |   2xx |   3xx |   4xx |   5xx |
    |---------+------------------+-------+-------+-------+-------|
    |   64332 |         2775.251 | 61262 |  2994 |    71 |     5 |

    Detailed:
    | request_path                             |   count |   avg_bytes_sent |   2xx |   3xx |   4xx |   5xx |
    |------------------------------------------+---------+------------------+-------+-------+-------+-------|
    | /abc/xyz/xxxx                            |   20946 |          434.693 | 20935 |     0 |    11 |     0 |
    | /xxxxx.json                              |    5633 |         1483.723 |  5633 |     0 |     0 |     0 |
    | /xxxxx/xxx/xxxxxxxxxxxxx                 |    3629 |         6835.499 |  3626 |     0 |     3 |     0 |
    | /xxxxx/xxx/xxxxxxxx                      |    3627 |        15971.885 |  3623 |     0 |     4 |     0 |
    | /xxxxx/xxx/xxxxxxx                       |    3624 |         7830.236 |  3621 |     0 |     3 |     0 |
    | /static/js/minified/utils.min.js         |    3031 |         1781.155 |  2104 |   927 |     0 |     0 |
    | /static/js/minified/xxxxxxx.min.v1.js    |    2889 |         2210.235 |  2068 |   821 |     0 |     0 |
    | /static/tracking/js/xxxxxxxx.js          |    2594 |         1325.681 |  1927 |   667 |     0 |     0 |
    | /xxxxx/xxx.html                          |    2521 |          573.597 |  2520 |     0 |     1 |     0 |
    | /xxxxx/xxxx.json                         |    1840 |          800.542 |  1839 |     0 |     1 |     0 |

View top source IPs of clients
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

::

    $ ngxtop top remote_addr
    running for 20 seconds, 3215 records processed: 159.62 req/sec

    top remote_addr
    | remote_addr     |   count |
    |-----------------+---------|
    | 118.173.177.161 |      20 |
    | 110.78.145.3    |      16 |
    | 171.7.153.7     |      16 |
    | 180.183.67.155  |      16 |
    | 183.89.65.9     |      16 |
    | 202.28.182.5    |      16 |
    | 1.47.170.12     |      15 |
    | 119.46.184.2    |      15 |
    | 125.26.135.219  |      15 |
    | 125.26.213.203  |      15 |

List 4xx or 5xx responses together with HTTP referer
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

::

    $ ngxtop -i 'status >= 400' print request status http_referer
    running for 2 seconds, 28 records processed: 13.95 req/sec

    request, status, http_referer:
    | request   |   status | http_referer   |
    |-----------+----------+----------------|
    | -         |      400 | -              |