haproxy -vv

haproxy-2.2-vv.txt

HA-Proxy version 2.3-dev0 2020/07/07 - https://haproxy.org/
Status: development branch - not safe for use in production.
Known bugs: https://github.com/haproxy/haproxy/issues?q=is:issue+is:open
Running on: Linux 5.4.0-40-generic #44-Ubuntu SMP Mon Jun 22 23:59:48 UTC 2020 aarch64
Build options :
  TARGET  = linux-glibc
  CPU     = generic
  CC      = clang-9
  CFLAGS  = -O2 -Wall -Wextra -Wdeclaration-after-statement -fwrapv -Wno-address-of-packed-member -Wno-unused-label -Wno-sign-compare -Wno-unused-parameter -Wno-missing-field-initializers -Wno-string-plus-int -Wtype-limits -Wshift-negative-value -Wnull-dereference -Werror
  OPTIONS = USE_PCRE=1 USE_PCRE_JIT=1 USE_OPENSSL=1 USE_LUA=1 USE_ZLIB=1 USE_DEVICEATLAS=1 USE_51DEGREES=1 USE_WURFL=1 USE_SYSTEMD=1

Feature list : +EPOLL -KQUEUE +NETFILTER +PCRE +PCRE_JIT -PCRE2 -PCRE2_JIT +POLL -PRIVATE_CACHE +THREAD -PTHREAD_PSHARED +BACKTRACE -STATIC_PCRE -STATIC_PCRE2 +TPROXY +LINUX_TPROXY +LINUX_SPLICE +LIBCRYPT +CRYPT_H +GETADDRINFO +OPENSSL +LUA +FUTEX +ACCEPT4 +ZLIB -SLZ +CPU_AFFINITY +TFO +NS +DL +RT +DEVICEATLAS +51DEGREES +WURFL +SYSTEMD -OBSOLETE_LINKER +PRCTL +THREAD_DUMP -EVPORTS

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

Built with multi-threading support (MAX_THREADS=64, default=8).
Built with OpenSSL version : OpenSSL 1.1.1f  31 Mar 2020
Running on OpenSSL version : OpenSSL 1.1.1f  31 Mar 2020
OpenSSL library supports TLS extensions : yes
OpenSSL library supports SNI : yes
OpenSSL library supports : TLSv1.0 TLSv1.1 TLSv1.2 TLSv1.3
Built with Lua version : Lua 5.3.3
Built with DeviceAtlas support (dummy library only).
Built with 51Degrees Pattern support (dummy library).
Built with WURFL support (dummy library version 1.11.2.100)
Built with network namespace support.
Built with zlib version : 1.2.11
Running on zlib version : 1.2.11
Compression algorithms supported : identity("identity"), deflate("deflate"), raw-deflate("deflate"), gzip("gzip")
Built with transparent proxy support using: IP_TRANSPARENT IPV6_TRANSPARENT IP_FREEBIND
Built with PCRE version : 8.39 2016-06-14
Running on PCRE version : 8.39 2016-06-14
PCRE library supports JIT : yes
Encrypted password support via crypt(3): yes
Built with clang compiler version 9.0.1 

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.

Available multiplexer protocols :
(protocols marked as <default> cannot be specified using 'proto' keyword)
            fcgi : mode=HTTP       side=BE        mux=FCGI
       <default> : mode=HTTP       side=FE|BE     mux=H1
              h2 : mode=HTTP       side=FE|BE     mux=H2
       <default> : mode=TCP        side=FE|BE     mux=PASS

Available services : none

Available filters :
	[SPOE] spoe
	[COMP] compression
	[TRACE] trace
	[CACHE] cache
	[FCGI] fcgi-app