Hi Willy, Hi All,
the purpose of this email is to solicit feedback on an implementation
of email alerts for haproxy the design of which is based on a discussion
in this forum some months ago.
This patchset allows configuration of mailers. These are like
the existing haproxy concept of peers. But for sending email alerts.
It also allows proxies to configure sending email alerts to mailers.
An example haproxy.cf snippet is as follows:
listen VIP_Name
...
server RIP_Name ...
email-alert mailers some_mailers
email-alert from te...@horms.org
email-alert to te...@horms.org
mailers some_mailers
mailer us 127.0.0.1:25
mailer them 192.168.0.1:587
And an example email alert is as follows:
---- start ----
Date: Wed, 28 Jan 2015 17:23:21 +0900 (JST)
From: te...@horms.org
To: te...@horms.org
Subject: [HAproxy Alert] Server VIP_Name/RIP_Name is DOWN.
Server VIP_Name/RIP_Name is DOWN.
---- end ----
Internally the code makes use of a dummy check using the tcpcheck
code to set up a simple sequence of expect/send rules. This,
along with the notion of mailers, is my interpretation of the
earlier discussion in this forum.
The current code has only been lightly tested and has a number of
limitations including:
* No options to control sending email alerts based on the event
that has occurred. That is, its probably way to noisy for most
people's tastes.
* No options to configure the format of the email alerts
* No options to configure delays associated with the checks
used to send alerts.
* No Documentation
* No support for STLS. This one will be a little tricky.
Again the purpose is to solicit feedback on the code so far,
in particular the design, before delving into further implementation details.
For reference this patchset is available in git
https://github.com/horms/haproxy devel/email-alert
This patchset is based on the current mainline master branch:
the 1.6 development branch. The current head commit there is
32602d2 ("BUG/MINOR: checks: prevent http keep-alive with http-check expect").
Simon Horman (8):
MEDIUM: Remove connect_chk
MEDIUM: Refactor init_check and move to checks.c
MEDIUM: Add free_check() helper
MEDIUM: Move proto and addr fields struct check
MEDIUM: Attach tcpcheck_rules to check
MEDIUM: Add parsing of mailers section
MEDIUM: Allow configuration of email alerts
MEDIUM: Support sending email alerts
Makefile | 2 +-
include/proto/checks.h | 5 +
include/types/checks.h | 3 +
include/types/mailers.h | 65 ++++++++
include/types/proxy.h | 24 +++
include/types/server.h | 5 -
src/cfgparse.c | 290 ++++++++++++++++++++++++++++++++
src/checks.c | 427 ++++++++++++++++++++++++++++++++++++++++++------
src/mailers.c | 17 ++
src/server.c | 60 ++-----
10 files changed, 803 insertions(+), 95 deletions(-)
create mode 100644 include/types/mailers.h
create mode 100644 src/mailers.c
--
2.1.4
