Preserve backend uptime after reload

[Maximilian Böhm]

Hello,

I've setup the procedure to store and load the stats file from the socket after a reload in order to retain the uptime of my backends.

But it actually does only retain the uptime of the frontend, backend uptime is starting by 0s. Is it thought this way or am I doing something wrong? The doc says " loading state or load states from a file containing all backends and servers."

I've attached the configuration lines as well as the version of the used haproxy.

Thanks!

Best regards,
Max


global
# https://serverfault.com/questions/880592/preserve-backend-server-status-when-reloading-haproxy
# https://cbonte.github.io/haproxy-dconv/1.7/configuration.html#load-server-state-from-file
server-state-file /var/lib/haproxy/server-state
stats socket /var/lib/haproxy/stats

defaults
# https://serverfault.com/questions/880592/preserve-backend-server-status-when-reloading-haproxy
# https://cbonte.github.io/haproxy-dconv/1.7/configuration.html#load-server-state-from-file
load-server-state-from-file global





HA-Proxy version 1.8.14-1~bpo8+1 2018/09/24
Copyright 2000-2018 Willy Tarreau <***@haproxy.org>

Build options :
TARGET = linux2628
CPU = generic
CC = gcc
CFLAGS = -g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2
OPTIONS = USE_GETADDRINFO=1 USE_ZLIB=1 USE_REGPARM=1 USE_OPENSSL=1 USE_LUA=1 USE_SYSTEMD=1 USE_PCRE=1 USE_PCRE_JIT=1 USE_NS=1

Default settings :
maxconn = 2000, bufsize = 16384, maxrewrite = 1024, maxpollevents = 200

Built with OpenSSL version : OpenSSL 1.0.2l 25 May 2017
Running on OpenSSL version : OpenSSL 1.0.2l 25 May 2017
OpenSSL library supports TLS extensions : yes
OpenSSL library supports SNI : yes
OpenSSL library supports : TLSv1.0 TLSv1.1 TLSv1.2
Built with Lua version : Lua 5.3.3
Built with transparent proxy support using: IP_TRANSPARENT IPV6_TRANSPARENT IP_FREEBIND
Encrypted password support via crypt(3): yes
Built with multi-threading support.
Built with PCRE version : 8.35 2014-04-04
Running on PCRE version : 8.35 2014-04-04
PCRE library supports JIT : yes
Built with zlib version : 1.2.8
Running on zlib version : 1.2.8
Compression algorithms supported : identity("identity"), deflate("deflate"), raw-deflate("deflate"), gzip("gzip")
Built with network namespace support.

Available polling systems :
epoll : pref00, test result OK
poll : pref 0, test result OK
select : pref0, test result OK
Total: 3 (3 usable), will use epoll.

Available filters :
[SPOE] spoe
[COMP] compression
[TRACE] trace