One of the deployments I have is a cluster of Raspberry Pis. I am trying to cache apt content. The cluster has one node running (only) squid 3.5.23 with an external HDD. All the nodes have an entry in apt.conf.d pointing to the squid node: Acquire::http::Proxy "http://localhost:3128"; (this is on the squid machine) I find that the fetching of the release and index files is painfully slow. Squid seems to be caching the .deb and .udeb files and providing them once they've been downloaded but the apt update command seems particularly slow. All the Pi's are running the stretch release with some also using (Debian's) stretch-backports Thoughts that spring to mind: 1. The Raspberry Pi foundation machines/network are overloaded. 2. IPv6 timing out and then trying IPv4 (both are enabled on the Pi) 3. Maybe APT is using HTTPS and I need to define a port for it to listen on. Has anyone on the list tried using apt-cacher-ng with squid? Below is my squid.conf and some output from apt taken from the Pi3 running squid. MarkJ sudo apt update Get:1 http://archive.raspberrypi.org/debian stretch InRelease [25.3 kB] Get:2 http://mirrordirector.raspbian.org/raspbian stretch InRelease [15.0 kB] Fetched 40.2 kB in 1min 2s (639 B/s) Reading package lists... Done Building dependency tree Reading state information... Done All packages are up to date. ping archive.raspberrypi.org PING lb.raspberrypi.org (93.93.130.39) 56(84) bytes of data. 64 bytes from 93.93.130.39 (93.93.130.39): icmp_seq=1 ttl=52 time=301 ms 64 bytes from 93.93.130.39 (93.93.130.39): icmp_seq=2 ttl=52 time=301 ms PING mirrordirector.raspbian.org (93.93.128.193) 56(84) bytes of data. 64 bytes from 93.93.128.193 (93.93.128.193): icmp_seq=1 ttl=52 time=300 ms 64 bytes from 93.93.128.193 (93.93.128.193): icmp_seq=2 ttl=52 time=301 ms Squid.conf acl localnet src 192.168.1.0/24 # internal network acl localnet src fc00::/7 # RFC 4193 local private network range acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines acl aptop src 192.168.*.** # lappie (redacted) 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 acl ads dstdomain .doubleclick.net acl phishing dstdomain .flashtalking.com # # Recommended minimum Access Permission configuration: # # Deny requests to certain unsafe ports http_access deny !Safe_ports # Deny CONNECT to other than secure SSL ports http_access deny CONNECT !SSL_ports # Deny adverts and phishing http_access deny ads http_access deny phishing # Only allow cachemgr access from laptop http_access allow laptop manager http_access deny manager # # INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS # # Example rule allowing access from your local networks. # Adapt localnet in the ACL section to list your (internal) IP networks # from where browsing should be allowed http_access allow localnet http_access allow localhost # And finally deny all other access to this proxy http_access deny all # Squid normally listens to port 3128 http_port 3128 # Memory to use (default 8Mb) cache_mem 500 MB # Max object to cache (default 4Mb) maximum_object_size 256 MB # replacement_policy (default lru) memory_replacement_policy lru cache_replacement_policy heap LFUDA # disk cache aufs, directory, 18Gb, 32x256 directories cache_dir aufs /var/spool/squid 18432 32 256 # Dont abort downloads cache them quick_abort_min -1 KB # client_request_buffer_max_size (default 512 KB) used for uploads client_request_buffer_max_size 128 KB # Coredumps coredump_dir /var/spool/squid # Access logging access_log /var/log/squid/access.log squid # Cache log cache_log /var/log/squid/cache.log # number of logfiles to keep logfile_rotate 5 # NetDB log disabled netdb_filename none # debian refresh pattern refresh_pattern (\.deb|\.udeb)$ 1440 80% 10080 # # Add any of your own refresh_pattern entries above these. # refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 refresh_pattern . 0 20% 4320 # iinet DNS name servers dns_nameservers 203.0.178.191 203.215.29.191 # verify dest servers (default off) host_verify_strict on # max number of open files max_filedescriptors 1024 # try IPv4 before IPv6 dns_v4_first on # disable pinger (default on) pinger_enable off # shutdown delay (default 30 secs) shutdown_lifetime 5 seconds _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users