Package: squid
Version: 3.5.23-5
Severity: normal
The squid service takes significantly longer to restart than other
network services. I think it's doing some kind of unnecessary
30-second wait. Here's a demonstration:
0 root@host:~# time systemctl restart ssh
real0m0.039s
user0m0.013s
sys 0m0.005s
0 root@host:~# time systemctl restart squid
real0m32.192s
user0m0.011s
sys 0m0.005s
0 root@host:~# journalctl -u squid --since '2 minutes ago'
-- Logs begin at Sat 2014-10-11 10:16:57 EDT, end at Mon 2017-10-23 15:13:51
EDT. --
Oct 23 15:12:31 host systemd[1]: Stopping LSB: Squid HTTP Proxy version 3.x...
Oct 23 15:13:03 host squid[13538]: Squid Parent: (squid-1) process 13540 exited
with status 0
Oct 23 15:13:03 host squid[13657]: Stopping Squid HTTP Proxy: squid
Waiting.done.
Oct 23 15:13:03 host squid[13657]: .
Oct 23 15:13:03 host systemd[1]: squid.service: Killing process 13540 (n/a)
with signal SIGKILL.
Oct 23 15:13:03 host systemd[1]: squid.service: Killing process 13540 (n/a)
with signal SIGKILL.
Oct 23 15:13:03 host systemd[1]: Stopped LSB: Squid HTTP Proxy version 3.x.
Oct 23 15:13:03 host systemd[1]: Starting LSB: Squid HTTP Proxy version 3.x...
Oct 23 15:13:03 host squid[13723]: Squid Parent: will start 1 kids
Oct 23 15:13:03 host squid[13723]: Squid Parent: (squid-1) process 13725 started
Oct 23 15:13:03 host squid[13685]: Starting Squid HTTP Proxy: squid.
Oct 23 15:13:03 host systemd[1]: squid.service: PID file /var/run/squid.pid not
readable (yet?) after start: No such file or directory
Oct 23 15:13:03 host systemd[1]: squid.service: Supervising process 13725 which
is not our child. We'll most likely not notice when it exits.
Oct 23 15:13:03 host systemd[1]: Started LSB: Squid HTTP Proxy version 3.x.
0 root@host:~# grep '^[^#]' /etc/squid/squid.conf
acl SSL_ports port 443
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl CONNECT method CONNECT
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost manager
http_access deny manager
http_access allow localhost
http_access deny all
http_port 3128
coredump_dir /var/spool/squid
refresh_pattern ^ftp: 144020% 10080
refresh_pattern ^gopher:14400% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern . 0 20% 4320
0 root@host:~# df -h /var/spool/squid/
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_host0-var 5.4G 4.1G 1009M 81% /var
0 root@host:~#
There is no additional CPU or disk or network activity during the
shutdown that i can see. So this looks like a deliberate 30 second
delay, and systemd is issuing a SIGKILL. This doesn't seem
like a good idea.
If there is any debugging information you want from me, i'm happy to
try to provide it.
Thanks for maintaining squid in debian!
--dkg
-- System Information:
Debian Release: buster/sid
APT prefers testing-debug
APT policy: (500, 'testing-debug'), (500, 'testing'), (500, 'oldstable'),
(200, 'unstable-debug'), (200, 'unstable'), (1, 'experimental-debug'), (1,
'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.13.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages squid depends on:
ii adduser 3.116
ii libc62.24-17
ii libcap2 1:2.25-1.1
ii libcomerr2 1.43.7-1
ii libdb5.3 5.3.28-13.1
ii libdbi-perl 1.637-1
ii libecap3 1.0.1-3.2
ii libexpat12.2.3-1
ii libgcc1 1:7.2.0-11
ii libgssapi-krb5-2 1.15.1-2
ii libkrb5-31.15.1-2
ii libldap-2.4-22.4.45+dfsg-1
ii libltdl7 2.4.6-2
ii libnetfilter-conntrack3 1.0.6-2
ii libnettle6 3.3-2
ii libpam0g 1.1.8-3.6
ii libsasl2-2 2.1.27~101-g0780600+dfsg-3
ii libstdc++6 7.2.0-11
ii libxml2 2.9.4+dfsg1-5
ii logrotate3.11.0-0.1
ii lsb-base 9.20170808
ii netbase 5.4
ii squid-common 3.5.23-5
Versions of packages squid recommends:
ii libcap2-bin 1:2.25-1.1
Versions of packages squid suggests:
pn resolvconf
ii smbclient2:4.6.7+dfsg-2
pn squid-cgi
pn squid-purge
pn squidclient
pn ufw
pn winbindd
