On 18/07/2014 08:33 μμ, Szelcsányi Gábor wrote: > Hi, > > I've been reading the documentation and searching the mail list, but one > thing is not clear for me. I have nbroc 2, 2 frontends pined to a > separate cpu core and 1-1 backend. The bind-process options of these > backends are inherited from their parent frontend. Thus, are both > processes supposed to do healthcheck for backend servers or just the > desired process should do that? > > example: > > nbproc 2 > cpu-map 1 0 > cpu-map 2 1 > ... > > frontend frn1 > bind 10.0.0.10:80 <http://10.0.0.10:80> process 1 name frn1 > bind-process 1 > ... > default_backend bck1 > > frontend frn2 > bind 10.0.0.10:81 <http://10.0.0.10:81> process 2 name frn2 > bind-process 2 > ... > default_backend bck2 > > backend bck1 > option httpchk HEAD /healthcheck HTTP/1.1\r\n > ... > server srv1 10.0.0.1:80 <http://10.0.0.1:80> maxconn 5000 > weight 50 check inter 5s fall 2 rise 1 slowstart 15s > server srv2 10.0.0.2:80 <http://10.0.0.2:80> maxconn 5000 > weight 50 check inter 5s fall 2 rise 1 slowstart 15s > > backend bck2 > option httpchk HEAD /healthcheck HTTP/1.1\r\n > ... > server srv3 10.0.0.3:80 <http://10.0.0.3:80> maxconn 5000 > weight 50 check inter 5s fall 2 rise 1 slowstart 15s > server srv4 10.0.0.4:80 <http://10.0.0.4:80> maxconn 5000 > weight 50 check inter 5s fall 2 rise 1 slowstart 15s > > So the question is should both haproxy processes send health check > queries to srv1 and srv2 or only the first process is designated to do this? > In my setup I see traffic from both processes. If I set 6 or more pinned > frontends with different backends then the health checks can saturate > the backend servers. I tought only the right process should check for > status. The rest could never send traffic to the servers anyway. Am I > wrong or I just missing something? > > I'm using 1.5.2 stable. (released 2014/07/12) > HA-Proxy version 1.5.2 2014/07/12 > Copyright 2000-2014 Willy Tarreau <[email protected] <mailto:[email protected]>> > > Build options : > TARGET = linux26 > CPU = generic > CC = gcc > CFLAGS = -O2 -g -fno-strict-aliasing > OPTIONS = USE_LINUX_SPLICE=1 USE_LINUX_TPROXY=1 USE_LIBCRYPT=1 > USE_GETADDRINFO=1 USE_ZLIB=1 USE_EPOLL=1 USE_CPU_AFFINITY=1 > USE_OPENSSL=1 USE_STATIC_PCRE=1 USE_TFO=1 > > > Regards, > Gabor
I can't reproduce the behavior you describe. Below is the test conf I
used where I set different User-Agent for the healthcheck on backends in
order to make it easier for me to see if process 2 sends checks on
foo-server1.
nbproc 2
cpu-map 1 0
cpu-map 2 1
frontend main
bind *:80
bind-process 1
default_backend foo
backend foo
default-server inter 10s
option httpchk GET / HTTP/1.1\r\nHost:\
foo.example.com\r\nUser-Agent:\ HAProxy
server foo-server1 21.229.28.251:80 check
frontend main2
bind *:81
bind-process 2
default_backend foo2
backend foo2
default-server inter 10s
option httpchk GET / HTTP/1.1\r\nHost:\
foo.example.com\r\nUser-Agent:\ HAProxy2
server foo-server2 20.229.28.252:80 check
# haproxy -vv
HA-Proxy version 1.5.2 2014/07/12
Copyright 2000-2014 Willy Tarreau <[email protected]>
Build options :
TARGET = linux2628
CPU = generic
CC = gcc
CFLAGS =
OPTIONS = USE_LINUX_TPROXY=1 USE_ZLIB=1 USE_REGPARM=1 USE_OPENSSL=1
USE_PCRE=1
Default settings :
maxconn = 2000, bufsize = 16384, maxrewrite = 8192, maxpollevents = 200
Encrypted password support via crypt(3): yes
Built with zlib version : 1.2.3
Compression algorithms supported : identity, deflate, gzip
Built with OpenSSL version : OpenSSL 1.0.0-fips 29 Mar 2010
Running on OpenSSL version : OpenSSL 1.0.0-fips 29 Mar 2010
OpenSSL library supports TLS extensions : yes
OpenSSL library supports SNI : yes
OpenSSL library supports prefer-server-ciphers : yes
Built with PCRE version : 7.8 2008-09-05
PCRE library supports JIT : no (USE_PCRE_JIT not set)
Built with transparent proxy support using: IP_TRANSPARENT
IPV6_TRANSPARENT IP_FREEBIND
Available polling systems :
epoll : pref=300, test result OK
poll : pref=200, test result OK
select : pref=150, test result OK
Total: 3 (3 usable), will use epoll.
Cheers,
Pavlos
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