Sébastien Gross 537b9e7f36 MINOR: config: add environment variables for default log format
This patch provides a convenient way to override the default TCP, HTTP
and HTTP log formats. Instead of having a look into the documentation
to figure out what is the appropriate default log format three new
environment variables can be used: HAPROXY_TCP_LOG_FMT,
HAPROXY_HTTP_LOG_FMT and HAPROXY_HTTPS_LOG_FMT. Their content are
substituted verbatim.

These variables are set before parsing the configuration and are unset
just after all configuration files are successful parsed.

Example:

    # Instead of writing this long log-format line...
    log-format "%ci:%cp [%tr] %ft %b/%s %TR/%Tw/%Tc/%Tr/%Ta %ST %B %CC \
                %CS %tsc %ac/%fc/%bc/%sc/%rc %sq/%bq %hr %hs %{+Q}r \
                lr=last_rule_file:last_rule_line"

    # ..the HAPROXY_HTTP_LOG_FMT can be used to provide the default
    # http log-format string
    log-format "${HAPROXY_HTTP_LOG_FMT} lr=last_rule_file:last_rule_line"

Please note that nothing prevents users to unset the variables or
override their content in a global section.

Signed-off-by: Sébastien Gross <sgross@haproxy.com>
2023-01-04 08:23:43 +01:00
..
2006-06-15 21:48:13 +02:00
2022-12-01 15:25:34 +01:00
2006-06-15 21:48:13 +02:00
2022-04-16 12:15:47 +02:00