I'm getting duplicate HAProxy log messages from my LUA script and don't understand why.
haproxy.cfg
global
log /dev/log local0 warning
chroot /var/lib/haproxy
stats socket /run/haproxy/admin.sock mode 660 level admin expose-fd listeners
stats timeout 30s
user haproxy
group haproxy
daemon
# Default SSL material locations
ca-base /etc/ssl/certs
crt-base /etc/ssl/private
# See: https://ssl-config.mozilla.org/#server=haproxy&server-version=2.0.3&config=intermediate
ssl-default-bind-ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
ssl-default-bind-ciphersuites TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256
ssl-default-bind-options ssl-min-ver TLSv1.2 no-tls-tickets
lua-load /home/tester/hello.lua
defaults
log global
mode http
option httplog
option dontlognull
timeout connect 5000
timeout client 50000
timeout server 50000
errorfile 400 /etc/haproxy/errors/400.http
errorfile 403 /etc/haproxy/errors/403.http
errorfile 408 /etc/haproxy/errors/408.http
errorfile 500 /etc/haproxy/errors/500.http
errorfile 502 /etc/haproxy/errors/502.http
errorfile 503 /etc/haproxy/errors/503.http
errorfile 504 /etc/haproxy/errors/504.http
frontend test_endpoint
bind *:9202
http-request lua.tester
hello.lua
function tester(txn)
core.log(core.debug, "debug message!
")
core.log(core.info, "info message!
")
core.log(core.warning, "warning message!
")
core.log(core.err, "error message!
")
end
core.register_action('tester', {'http-req'}, tester)
HAProxy was installed as a package and therefore writes to /var/log/haproxy.log by default on my ubuntu system. This is what I see in the log:
Jan 25 05:47:23 ubuntu haproxy[65622]: warning message!.
Jan 25 05:47:23 ubuntu haproxy[65622]: error message!.
Jan 25 05:47:23 ubuntu haproxy[65615]: [info] 024/054723 (65622) : info message!.
Jan 25 05:47:23 ubuntu haproxy[65615]: [warning] 024/054723 (65622) : warning message!.
Jan 25 05:47:23 ubuntu haproxy[65615]: [err] 024/054723 (65622) : error message!.
I expected only the top 2 lines. Can anyone explain why the other lines appear in the log and how I can configure them out?
Thanks in advance!
for info:
# haproxy -v
HA-Proxy version 2.2.8-1ppa1~bionic 2021/01/14 - https://haproxy.org/
Status: long-term supported branch - will stop receiving fixes around Q2 2025.
Known bugs: http://www.haproxy.org/bugs/bugs-2.2.8.html
Running on: Linux 4.15.0-134-generic #138-Ubuntu SMP Fri Jan 15 10:52:18 UTC 2021 x86_64
UPDATE:
Looking at the hlua.c source code, I can see the extra 3 lines are stderr - the logging is sent to the log (green box) and also to stderr (red box):
question from:
https://stackoverflow.com/questions/65879666/haproxy-lua-logging 与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…