ProxyTimeout honored, but not ProxyPassMatch ... "timeout=n"

[pseudonomous]

I'm running Apache as a reverse proxy, potentially for a few different services I want to proxy. One of them is finicky, and I want a fast timeout if it's not working. Another service occasionally has legitimate reasons to be slow. So I'm doing something like this:

ProxyPassMatch "^/a(.*)" http://bounce.math.uic.edu/a$1 connectiontimeout=1 timeout=1
ProxyPassMatch "^/b(.*)" http://bounce.math.uic.edu/b$1 connectiontimeout=60 timeout=60

But the timeout parameters seem to be ignored for both "ProxyPassMatch" directives.

I *can* modify behavior globally with

ProxyTimeout 1

Unfortunately, this does not work for my purpose because I need different proxy timeouts in the same VirtualHost.

I do wonder if this bug is related to:

https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1509083

though that bug seems to be filed against a different version of Apache shipped in a previous Ubuntu release.

ProblemType: Bug
Apache2ConfdDirListing: False
Apache2Modules: httpd (pid 30649) already running
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
Date: Sat Apr 20 01:42:08 2019
Dependencies:
 adduser 3.116ubuntu1
 apache2-bin 2.4.29-1ubuntu4.6
 apache2-data 2.4.29-1ubuntu4.6
 apache2-utils 2.4.29-1ubuntu4.6
 apt 1.6.10
 apt-utils 1.6.10
 bzip2 1.0.6-8.1
 ca-certificates 20180409
 debconf 1.5.66
 debconf-i18n 1.5.66
 dpkg 1.19.0.5ubuntu2.1
 file 1:5.32-2ubuntu0.2
 gcc-8-base 8.2.0-1ubuntu2~18.04
 gpgv 2.2.4-1ubuntu1.2
 init-system-helpers 1.51
 libacl1 2.2.52-3build1
 libapr1 1.6.3-2
 libaprutil1 1.6.1-2
 libaprutil1-dbd-sqlite3 1.6.1-2
 libaprutil1-ldap 1.6.1-2
 libapt-inst2.0 1.6.10
 libapt-pkg5.0 1.6.10
 libasn1-8-heimdal 7.5.0+dfsg-1
 libattr1 1:2.4.47-2build1
 libaudit-common 1:2.8.2-1ubuntu1
 libaudit1 1:2.8.2-1ubuntu1
 libbz2-1.0 1.0.6-8.1
 libc6 2.27-3ubuntu1
 libcap-ng0 0.7.7-3.1
 libdb5.3 5.3.28-13.1ubuntu1
 libexpat1 2.2.5-3
 libffi6 3.2.1-8
 libgcc1 1:8.2.0-1ubuntu2~18.04
 libgcrypt20 1.8.1-4ubuntu1.1
 libgdbm-compat4 1.14.1-6
 libgdbm5 1.14.1-6
 libgmp10 2:6.1.2+dfsg-2
 libgnutls30 3.5.18-1ubuntu1
 libgpg-error0 1.27-6
 libgpm2 1.20.7-5
 libgssapi3-heimdal 7.5.0+dfsg-1
 libhcrypto4-heimdal 7.5.0+dfsg-1
 libheimbase1-heimdal 7.5.0+dfsg-1
 libheimntlm0-heimdal 7.5.0+dfsg-1
 libhogweed4 3.4-1
 libhx509-5-heimdal 7.5.0+dfsg-1
 libicu60 60.2-3ubuntu3
 libidn2-0 2.0.4-1.1build2
 libkrb5-26-heimdal 7.5.0+dfsg-1
 libldap-2.4-2 2.4.45+dfsg-1ubuntu1.1
 libldap-common 2.4.45+dfsg-1ubuntu1.1
 liblocale-gettext-perl 1.07-3build2
 liblua5.2-0 5.2.4-1.1build1
 liblz4-1 0.0~r131-2ubuntu3
 liblzma5 5.2.2-1.3
 libmagic-mgc 1:5.32-2ubuntu0.2
 libmagic1 1:5.32-2ubuntu0.2
 libncurses5 6.1-1ubuntu1.18.04
 libncursesw5 6.1-1ubuntu1.18.04
 libnettle6 3.4-1
 libnghttp2-14 1.30.0-1ubuntu1
 libp11-kit0 0.23.9-2
 libpam-modules 1.1.8-3.6ubuntu2.18.04.1
 libpam-modules-bin 1.1.8-3.6ubuntu2.18.04.1
 libpam0g 1.1.8-3.6ubuntu2.18.04.1
 libpcre3 2:8.39-9
 libperl5.26 5.26.1-6ubuntu0.3
 libprocps6 2:3.3.12-3ubuntu1.1
 libroken18-heimdal 7.5.0+dfsg-1
 libsasl2-2 2.1.27~101-g0780600+dfsg-3ubuntu2
 libsasl2-modules 2.1.27~101-g0780600+dfsg-3ubuntu2
 libsasl2-modules-db 2.1.27~101-g0780600+dfsg-3ubuntu2
 libseccomp2 2.3.1-2.1ubuntu4.1
 libselinux1 2.7-2build2
 libsemanage-common 2.7-2build2
 libsemanage1 2.7-2build2
 libsepol1 2.7-1
 libsmartcols1 2.31.1-0.4ubuntu3.3
 libsqlite3-0 3.22.0-1
 libssl1.1 1.1.0g-2ubuntu4.3
 libstdc++6 8.2.0-1ubuntu2~18.04
 libsystemd0 237-3ubuntu10.20
 libtasn1-6 4.13-2
 libtext-charwidth-perl 0.04-7.1
 libtext-iconv-perl 1.7-5build6
 libtext-wrapi18n-perl 0.06-7.1
 libtinfo5 6.1-1ubuntu1.18.04
 libudev1 237-3ubuntu10.20
 libunistring2 0.9.9-0ubuntu2
 libuuid1 2.31.1-0.4ubuntu3.3
 libwind0-heimdal 7.5.0+dfsg-1
 libxml2 2.9.4+dfsg1-6.1ubuntu1.2
 libzstd1 1.3.3+dfsg-2ubuntu1
 lsb-base 9.20170808ubuntu1
 mime-support 3.60ubuntu1
 netbase 5.4
 openssl 1.1.0g-2ubuntu4.3
 passwd 1:4.5-1ubuntu1
 perl 5.26.1-6ubuntu0.3 [modified: usr/bin/shasum]
 perl-base 5.26.1-6ubuntu0.3
 perl-modules-5.26 5.26.1-6ubuntu0.3
 procps 2:3.3.12-3ubuntu1.1
 psmisc 23.1-1ubuntu0.1
 ssl-cert 1.0.39
 tar 1.29b-2ubuntu0.1
 ubuntu-keyring 2018.09.18.1~18.04.0
 uuid-runtime 2.31.1-0.4ubuntu3.3
 xz-utils 5.2.2-1.3
 zlib1g 1:1.2.11.dfsg-0ubuntu2
DistroRelease: Ubuntu 18.04
NonfreeKernelModules: openafs
Package: apache2 2.4.29-1ubuntu4.6
PackageArchitecture: amd64
ProcCpuinfoMinimal:
 processor : 0
 vendor_id : AuthenticAMD
 cpu family : 21
 model : 2
 model name : AMD FX(tm)-9590 Eight-Core Processor
 stepping : 0
 microcode : 0x6000626
 cpu MHz : 4294.964
 cache size : 2048 KB
 physical id : 0
 siblings : 1
 core id : 0
 cpu cores : 1
 apicid : 0
 initial apicid : 0
 fpu : yes
 fpu_exception : yes
 cpuid level : 13
 wp : yes
 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 x2apic popcnt aes xsave avx hypervisor lahf_lm cr8_legacy abm sse4a misalignsse 3dnowprefetch ssbd vmmcall arat
 bugs : fxsave_leak sysret_ss_attrs null_seg spectre_v1 spectre_v2 spec_store_bypass
 bogomips : 8589.92
 TLB size : 1536 4K pages
 clflush size : 64
 cache_alignment : 64
 address sizes : 48 bits physical, 48 bits virtual
 power management:
ProcEnviron:
 TERM=screen
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 4.15.0-47.50-generic 4.15.18
SourcePackage: apache2
Tags: bionic
Uname: Linux 4.15.0-47-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
_MarkForUpload: True
error.log:
 [Fri Apr 19 06:25:02.503979 2019] [mpm_prefork:notice] [pid 28921] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Fri Apr 19 06:25:02.504017 2019] [core:notice] [pid 28921] AH00094: Command line: '/usr/sbin/apache2'
 [Fri Apr 19 06:29:18.271189 2019] [mpm_prefork:notice] [pid 28921] AH00169: caught SIGTERM, shutting down
 [Fri Apr 19 06:29:18.522424 2019] [mpm_prefork:notice] [pid 29351] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Fri Apr 19 06:29:18.526795 2019] [core:notice] [pid 29351] AH00094: Command line: '/usr/sbin/apache2'
 [Fri Apr 19 06:34:18.620767 2019] [proxy_http:error] [pid 29361] (70007)The timeout specified has expired: [client 131.193.178.108:34732] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Fri Apr 19 06:34:18.620854 2019] [proxy:error] [pid 29361] [client 131.193.178.108:34732] AH00898: Error reading from remote server returned by /afs/
 [Fri Apr 19 06:34:22.047413 2019] [proxy_http:error] [pid 29360] (70007)The timeout specified has expired: [client 131.193.178.108:34734] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Fri Apr 19 06:34:22.047496 2019] [proxy:error] [pid 29360] [client 131.193.178.108:34734] AH00898: Error reading from remote server returned by /afs/
 [Fri Apr 19 22:50:43.095148 2019] [mpm_prefork:notice] [pid 29351] AH00169: caught SIGTERM, shutting down
 [Fri Apr 19 22:50:43.394000 2019] [mpm_prefork:notice] [pid 25032] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Fri Apr 19 22:50:43.396164 2019] [core:notice] [pid 25032] AH00094: Command line: '/usr/sbin/apache2'
 [Fri Apr 19 22:54:00.602955 2019] [proxy:error] [pid 25037] (110)Connection timed out: AH00957: HTTP: attempt to connect to 131.193.178.72:80 (*) failed
 [Fri Apr 19 22:54:00.603033 2019] [proxy_http:error] [pid 25037] [client 131.193.178.108:47422] AH01114: HTTP: failed to make connection to backend: bounce.math.uic.edu
 [Fri Apr 19 22:54:04.700691 2019] [proxy:error] [pid 25035] (110)Connection timed out: AH00957: HTTP: attempt to connect to 131.193.178.72:80 (*) failed
 [Fri Apr 19 22:54:04.700762 2019] [proxy_http:error] [pid 25035] [client 131.193.178.108:47424] AH01114: HTTP: failed to make connection to backend: bounce.math.uic.edu
 [Fri Apr 19 22:56:15.453272 2019] [mpm_prefork:notice] [pid 25032] AH00169: caught SIGTERM, shutting down
 [Fri Apr 19 22:56:15.691288 2019] [mpm_prefork:notice] [pid 25562] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Fri Apr 19 22:56:15.692630 2019] [core:notice] [pid 25562] AH00094: Command line: '/usr/sbin/apache2'
 [Fri Apr 19 23:03:35.005885 2019] [mpm_prefork:notice] [pid 25562] AH00169: caught SIGTERM, shutting down
 [Fri Apr 19 23:03:35.248195 2019] [mpm_prefork:notice] [pid 25730] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Fri Apr 19 23:03:35.250713 2019] [core:notice] [pid 25730] AH00094: Command line: '/usr/sbin/apache2'
 [Fri Apr 19 23:04:42.079876 2019] [mpm_prefork:notice] [pid 25730] AH00169: caught SIGTERM, shutting down
 [Fri Apr 19 23:04:42.296005 2019] [mpm_prefork:notice] [pid 25797] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Fri Apr 19 23:04:42.297266 2019] [core:notice] [pid 25797] AH00094: Command line: '/usr/sbin/apache2'
 [Fri Apr 19 23:10:58.385032 2019] [proxy_http:error] [pid 25803] (70007)The timeout specified has expired: [client 131.193.178.108:47720] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Fri Apr 19 23:10:58.385117 2019] [proxy:error] [pid 25803] [client 131.193.178.108:47720] AH00898: Error reading from remote server returned by /afs/
 [Fri Apr 19 23:11:23.961083 2019] [proxy_http:error] [pid 25800] (70007)The timeout specified has expired: [client 131.193.178.108:47738] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Fri Apr 19 23:11:23.961177 2019] [proxy:error] [pid 25800] [client 131.193.178.108:47738] AH00898: Error reading from remote server returned by /afs/
 [Sat Apr 20 00:54:13.595774 2019] [proxy_http:error] [pid 25828] (70007)The timeout specified has expired: [client 131.193.178.108:48520] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Sat Apr 20 00:54:13.595878 2019] [proxy:error] [pid 25828] [client 131.193.178.108:48520] AH00898: Error reading from remote server returned by /afs/
 [Sat Apr 20 00:54:17.989888 2019] [proxy_http:error] [pid 25829] (70007)The timeout specified has expired: [client 131.193.178.108:48518] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Sat Apr 20 00:54:17.989964 2019] [proxy:error] [pid 25829] [client 131.193.178.108:48518] AH00898: Error reading from remote server returned by /afs/
 [Sat Apr 20 01:01:08.071138 2019] [mpm_prefork:notice] [pid 25797] AH00169: caught SIGTERM, shutting down
 [Sat Apr 20 01:01:08.361567 2019] [mpm_prefork:notice] [pid 29577] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Sat Apr 20 01:01:08.362940 2019] [core:notice] [pid 29577] AH00094: Command line: '/usr/sbin/apache2'
 [Sat Apr 20 01:06:12.515174 2019] [proxy_http:error] [pid 29582] (70007)The timeout specified has expired: [client 131.193.178.108:49134] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Sat Apr 20 01:06:12.515291 2019] [proxy:error] [pid 29582] [client 131.193.178.108:49134] AH00898: Error reading from remote server returned by /afs/
 [Sat Apr 20 01:06:22.748755 2019] [proxy_http:error] [pid 29583] (70007)The timeout specified has expired: [client 131.193.178.108:49132] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Sat Apr 20 01:06:22.748840 2019] [proxy:error] [pid 29583] [client 131.193.178.108:49132] AH00898: Error reading from remote server returned by /afs/
 [Sat Apr 20 01:06:27.131868 2019] [proxy_http:error] [pid 29581] (70007)The timeout specified has expired: [client 131.193.178.108:49142] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Sat Apr 20 01:06:27.131948 2019] [proxy:error] [pid 29581] [client 131.193.178.108:49142] AH00898: Error reading from remote server returned by /afs/
 [Sat Apr 20 01:08:43.285394 2019] [mpm_prefork:notice] [pid 29577] AH00169: caught SIGTERM, shutting down
 [Sat Apr 20 01:08:43.516945 2019] [mpm_prefork:notice] [pid 30267] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Sat Apr 20 01:08:43.520504 2019] [core:notice] [pid 30267] AH00094: Command line: '/usr/sbin/apache2'
 [Sat Apr 20 01:09:10.644447 2019] [mpm_prefork:notice] [pid 30267] AH00169: caught SIGTERM, shutting down
 [Sat Apr 20 01:09:10.873433 2019] [mpm_prefork:notice] [pid 30316] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Sat Apr 20 01:09:10.874698 2019] [core:notice] [pid 30316] AH00094: Command line: '/usr/sbin/apache2'
 [Sat Apr 20 01:09:44.487841 2019] [mpm_prefork:notice] [pid 30316] AH00169: caught SIGTERM, shutting down
 [Sat Apr 20 01:09:44.721359 2019] [mpm_prefork:notice] [pid 30374] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Sat Apr 20 01:09:44.723045 2019] [core:notice] [pid 30374] AH00094: Command line: '/usr/sbin/apache2'
 [Sat Apr 20 01:11:02.771749 2019] [mpm_prefork:notice] [pid 30374] AH00169: caught SIGTERM, shutting down
 [Sat Apr 20 01:11:03.006362 2019] [mpm_prefork:notice] [pid 30431] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Sat Apr 20 01:11:03.008236 2019] [core:notice] [pid 30431] AH00094: Command line: '/usr/sbin/apache2'
 [Sat Apr 20 01:11:09.335273 2019] [proxy_http:error] [pid 30439] (70007)The timeout specified has expired: [client 131.193.178.108:49348] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Sat Apr 20 01:11:09.338639 2019] [proxy:error] [pid 30439] [client 131.193.178.108:49348] AH00898: Error reading from remote server returned by /afs/
 [Sat Apr 20 01:11:23.154969 2019] [mpm_prefork:notice] [pid 30431] AH00169: caught SIGTERM, shutting down
 [Sat Apr 20 01:11:23.382299 2019] [mpm_prefork:notice] [pid 30476] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Sat Apr 20 01:11:23.384157 2019] [core:notice] [pid 30476] AH00094: Command line: '/usr/sbin/apache2'
 [Sat Apr 20 01:11:27.680326 2019] [proxy_http:error] [pid 30483] (70007)The timeout specified has expired: [client 131.193.178.108:49354] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Sat Apr 20 01:11:27.680412 2019] [proxy:error] [pid 30483] [client 131.193.178.108:49354] AH00898: Error reading from remote server returned by /afs/
 [Sat Apr 20 01:11:31.656494 2019] [proxy_http:error] [pid 30483] (70007)The timeout specified has expired: [client 131.193.178.108:49354] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Sat Apr 20 01:11:31.656553 2019] [proxy:error] [pid 30483] [client 131.193.178.108:49354] AH00898: Error reading from remote server returned by /afs/
 [Sat Apr 20 01:11:41.314070 2019] [proxy_http:error] [pid 30482] (70007)The timeout specified has expired: [client 131.193.178.108:49356] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Sat Apr 20 01:11:41.314434 2019] [proxy:error] [pid 30482] [client 131.193.178.108:49356] AH00898: Error reading from remote server returned by /afs/
 [Sat Apr 20 01:12:12.762933 2019] [mpm_prefork:notice] [pid 30476] AH00169: caught SIGTERM, shutting down
 [Sat Apr 20 01:12:12.985931 2019] [mpm_prefork:notice] [pid 30530] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Sat Apr 20 01:12:12.987173 2019] [core:notice] [pid 30530] AH00094: Command line: '/usr/sbin/apache2'
 [Sat Apr 20 01:12:17.380943 2019] [proxy_http:error] [pid 30535] (70007)The timeout specified has expired: [client 131.193.178.108:49362] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Sat Apr 20 01:12:17.381031 2019] [proxy:error] [pid 30535] [client 131.193.178.108:49362] AH00898: Error reading from remote server returned by /afs/
 [Sat Apr 20 01:16:23.488198 2019] [proxy_http:error] [pid 30534] (70007)The timeout specified has expired: [client 131.193.178.108:49370] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Sat Apr 20 01:16:23.488526 2019] [proxy:error] [pid 30534] [client 131.193.178.108:49370] AH00898: Error reading from remote server returned by /afs/
 [Sat Apr 20 01:16:44.084856 2019] [mpm_prefork:notice] [pid 30530] AH00169: caught SIGTERM, shutting down
 [Sat Apr 20 01:16:44.310937 2019] [mpm_prefork:notice] [pid 30649] AH00163: Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g mod_perl/2.0.10 Perl/v5.26.1 configured -- resuming normal operations
 [Sat Apr 20 01:16:44.313799 2019] [core:notice] [pid 30649] AH00094: Command line: '/usr/sbin/apache2'
 [Sat Apr 20 01:16:50.513141 2019] [proxy_http:error] [pid 30657] (70007)The timeout specified has expired: [client 131.193.178.108:49376] AH01102: error reading status line from remote server bounce.math.uic.edu:80
 [Sat Apr 20 01:16:50.513443 2019] [proxy:error] [pid 30657] [client 131.193.178.108:49376] AH00898: Error reading from remote server returned by /afs/
modified.conffile..etc.apache2.apache2.conf: [modified]
modified.conffile..etc.apache2.sites-available.000-default.conf: [modified]
modified.conffile..etc.apache2.sites-available.default-ssl.conf: [modified]
mtime.conffile..etc.apache2.apache2.conf: 2019-03-27T21:40:21.485039
mtime.conffile..etc.apache2.sites-available.000-default.conf: 2019-03-26T13:33:33.545401
mtime.conffile..etc.apache2.sites-available.default-ssl.conf: 2019-03-26T19:49:44.962571