Mirror

We currently run a public mirror (mirror.csclub.uwaterloo.ca) on sodium-benzoate. We are listed on the ResNet "don't count" list so downloading from our mirror will not count against one's ResNet quota. Requests to mirror a particular distribution or archive should be made to syscom@csclub.uwaterloo.ca.

Archives Mirrored

Total Size: 1.36 TiB

Archive	Upstream/Listing	Size	Notes
Apache	rsync://rsync.us.apache.org/apache-dist/ http://www.apache.org/mirrors/	17 GiB	-
Blastwave	rsync://www.ibiblio.org/sun-packages/csw/ http://www.blastwave.org/mirrors.php	15 GiB	Submitted a request to be added to the mirror list.
CPAN	rsync://rsync.nic.funet.fi/CPAN/ http://mirror.cpan.org/	5 GiB	-
CRAN	-	20 GiB	-
CTAN	rsync://carroll.aset.psu.edu/ctan/ http://www.dante.de/cgi-bin/ctan/list.cgi http://www.dante.de/mirmon/	10 GiB	-
Cygwin	rsync://cygwin.com/cygwin-ftp/ http://www.cygwin.com/mirrors.html	5 GiB	-
Debian	rsync://gulus.usherbrooke.ca/debian/ http://www.debian.org/mirror/list http://www.de.debian.org/dmc/today/	316 GiB	Requested to be added to the ftp.ca.debian.org rotation; will be added if the need arises..
Debian-backports	rsync://www.backports.org/backports.org/ http://www.backports.org/debian/README.mirrors.html	36 GiB	Submitted a request to be added to the mirror list.
Debian-multimedia	rsync://www.debian-multimedia.org/debian/ http://www.debian-multimedia.org/debian-m.php	2 GiB	-
Debian-security	rsync://security.debian.org/debian-security/	46 GiB	Debian does not currently list debian-security mirrors, and encourages users to use security.debian.org exclusively.
Debian-unofficial	rsync://ftp.debian-unofficial.org/debian/ http://www.debian-unofficial.org/mirrors.html	1 GiB	-
Debian-volatile	rsync://volatile.debian.org/debian-volatile/ http://www.debian.org/volatile/volatile-mirrors	4 GiB	-
Eclipse	rsync://download.eclipse.org/eclipseMirror http://www.eclipse.org/downloads/download.php?file=/	138 GiB	-
Emdebian	rsync://www.emdebian.org/emdebian/	3 GiB	Emdebian does not currently list mirrors.
Gentoo (portage)	rsync://rsync1.us.gentoo.org/gentoo-portage/	1 GiB	We are rsync4.ca.gentoo.org.
Gentoo (sources)	rsync://masterdistfiles.gentoo.org/gentoo/ http://www.gentoo.org/main/en/mirrors.xml http://mirrorstats.gentoo.org/	92 GiB	See ~sysadmin/passwords/gentoo for rsync password.
GNU	rsync://ftp.ibiblio.org/pub/gnu/ftp/gnu/ http://www.gnu.org/order/ftp.html	14 GiB	-
Gobuntu-releases	rsync://cdimage.ubuntu.com/cdimage/gobuntu/releases/	7 GiB	Canonical does not currently list mirrors.
KDE	rsync://master.kde.org/kdeftp/ http://www.kde.org/mirrors/	65 GiB	-
kernel.org	rsync://kernel.org/pub/linux/ rsync://kernel.org/pub/software/ http://kernel.org/mirrors/countries/html/CA.html	82 GiB	-
mozdev	rsync://rsync.mozdev.org/mozdev/ http://mirrors.mozdev.org/index.html	5 GiB	Currently in the North American rotation, but could request to be added to the global rotation.
mozilla.org	rsync://releases-rsync.mozilla.org/mozilla-releases/ http://www.mozilla.org/mirrors.html	95 GiB	-
MySQL	rsync://mysql.mirrors.pair.com/mysql/ http://dev.mysql.com/downloads/mirrors.html	76 GiB	-
non-GNU	rsync://dl.sv.gnu.org/releases/ http://dl.sv.gnu.org/releases/00_MIRRORS.html	8 GiB	-
Openoffice (main set)	rsync://ftp.ussg.iu.edu/openoffice/ http://distribution.openoffice.org/mirrors/#mirrors http://ftp.stardiv.de/mirmon/mirror-state.html#ca	41 GiB	-
Ubuntu	rsync://archives.ubuntu.com/ubuntu/ https://launchpad.net/ubuntu/+archivemirrors	261 GiB	Are the official Canadian mirror (i.e., ca.archive.ubuntu.com)
Ubuntu-releases	rsync://releases.ubuntu.com/releases/ https://launchpad.net/ubuntu/+cdmirrors http://www.ubuntu.com/getubuntu/download http://www.kubuntu.org/download.php http://www.edubuntu.org/Download	37 GiB	Are the official Canadian mirror (i.e., ca.archive.ubuntu.com); ubuntu-releases includes Ubuntu, Kubuntu, and Edubuntu.
Xubuntu-releases	rsync://cdimage.ubuntu.com/cdimage/xubuntu/releases/ http://www.xubuntu.org/get	20 GiB	-

Propsed Archives to Mirror

We currently lack the disk space to mirror additional large archives.

• openSUSE (306 GiB)
• Mandriva (774 GiB)
• Fedora (906 GiB)
• Debian-cd (364 GiB)
• Slackware (31 GiB)
• ArchLinux (23 GiB)
• OpenBSD (54 GiB)
• FreeBSD (500 GiB)
• NetBSD (340 GiB)

Implementation Details

The mirroring is done by one of two scripts. Both are based on anonftpsync. Various cronjobs are scheduled to call one of these scripts.

csc-sync-debian

This is used to sync debian-style repositories. It's usage is:

csc-sync-debian local_dir rsync_host rsync_dir [trace_host [trace_dir]]

If trace_host is specified, then $rsync_dir/project/trace/$trace_host is checked to see if it has changed. If it has, a normal debian-style (two-pass) rsync is done.

csc-sync-standard

This is used to sync a tree in a general way. Like anonftpsync, it supports locking and logging. It's usage is:

csc-sync-standard local_dir rsync_host rsync_dir

Crontab

All cronjobs are listed in mirror's crontab. If csc-sync-debian is used, the cronjob is typically run bi-hourly. When using csc-sync-standard, the frequency of the cronjob is typically 12 hours. The crontab currently looks like this:

# m  h     dom mon dow command

#
# bi-hourly
#
  5  */2   *   *   *   ~/bin/csc-sync-debian debian gulus.usherbrooke.ca debian ftp-master.debian.org
  5  */2   *   *   *   ~/bin/csc-sync-debian debian-multimedia www.debian-multimedia.org debian marillat.net
  5  */2   *   *   *   ~/bin/csc-sync-debian debian-backports www.backports.org backports.org www.backports.org
  5  */2   *   *   *   ~/bin/csc-sync-debian debian-volatile volatile.debian.org debian-volatile volatile-master.debian.net
  5  */2   *   *   *   ~/bin/csc-sync-debian debian-security security.debian.org debian-security security-master.debian.org
  5  */2   *   *   *   ~/bin/csc-sync-debian debian-unofficial ftp.debian-unofficial.org debian ftp-master.debian-unofficial.org
  5  */2   *   *   *   ~/bin/csc-sync-debian ubuntu archive.ubuntu.com ubuntu drescher.canonical.com
  5  */2   *   *   *   ~/bin/csc-sync-standard ubuntu-releases releases.ubuntu.com releases
  5  */2   *   *   *   ~/bin/csc-sync-standard xubuntu-releases cdimage.ubuntu.com cdimage/xubuntu/releases/
  5  */2   *   *   *   ~/bin/csc-sync-standard kubuntu-kde4 cdimage.ubuntu.com cdimage/kubuntu-kde4/releases/

#
# daily
#
  5  3,15  *  *   *   ~/bin/csc-sync-debian emdebian www.emdebian.org emdebian
  5  3,15  *  *   *   ~/bin/csc-sync-standard nexenta nexenta.org repository
  5  3,15  *  *   *   ~/bin/csc-sync-standard nexenta-releases nexenta.org releases
  5  3,15  *  *   *   ~/bin/csc-sync-standard CPAN rsync.nic.funet.fi CPAN
  5  3,15  *  *   *   ~/bin/csc-sync-standard CRAN cran.r-project.org CRAN
  5  3,15  *  *   *   ~/bin/csc-sync-standard CTAN carroll.aset.psu.edu ctan
  5  3,15  *  *   *   ~/bin/csc-sync-standard openoffice ftp.ussg.iu.edu openoffice
  5  4,16  *  *   *   ~/bin/csc-sync-standard cygwin cygwin.com cygwin-ftp
  5  4,16  *  *   *   ~/bin/csc-sync-standard gnu ftp.ibiblio.org pub/gnu/ftp/gnu/
  5  4,16  *  *   *   ~/bin/csc-sync-standard nongnu dl.sv.gnu.org releases
  5  4,16  *  *   *   ~/bin/csc-sync-standard kernel.org/linux kernel.org all/linux/
  5  4,16  *  *   *   ~/bin/csc-sync-standard kernel.org/software kernel.org all/software/
  5  4,16  *  *   *   ~/bin/csc-sync-standard apache rsync.us.apache.org apache-dist
  5  4.16  *  *   *   ~/bin/csc-sync-standard eclipse download.eclipse.org eclipseMirror
  5  5,17  *  *   *   ~/bin/csc-sync-standard mysql mysql.he.net mysql
  5  5,17  *  *   *   ~/bin/csc-sync-standard kde master.kde.org kdeftp
  5  5,17  *  *   *   ~/bin/csc-sync-standard mozdev rsync.mozdev.org mozdev
  5  5,17  *  *   *   ~/bin/csc-sync-standard blastwave www.ibiblio.org sun-packages/csw/
  5  5,17  *  *   *   ~/bin/csc-sync-standard archlinux mirror.rit.edu archlinux
  5  5,17  *  *   *   ~/bin/csc-sync-standard debian-ports ftp.debian-ports.org debian
  5  5,17  *  *   *   ~/bin/csc-sync-debian-cd

#
# other
#
  29 */4   *  *   *   RSYNC_USER=gentoo RSYNC_PASSWORD=******** ~/bin/csc-sync-standard gentoo-distfiles masterdistfiles.gentoo.org gentoo
  15,45 *  *  *   *   ~/bin/csc-sync-standard gentoo-portage rsync1.us.gentoo.org gentoo-portage
  5,35  *  *  *   *   ~/bin/csc-sync-standard mozilla.org releases-rsync.mozilla.org mozilla-releases

HTTP

We use Apache as our web server. For now, we're redirecting requests for Ubuntu 7.10 ISO's to citric-acid. Here's a snippet of the worker configuration:

<IfModule mpm_worker_module>
    ServerLimit          16
    ThreadLimit          64
    StartServers          2
    MaxClients         1024
    MinSpareThreads      32
    MaxSpareThreads      96
    ThreadsPerChild      64
    MaxRequestsPerChild   0
</IfModule>

We use the bwbar application to display current bandwidth in the footer of mirror pages.

FTP

We use proftpd (standalone daemon) as our ftp server. To increase performance we disable DNS lookups in proftpd.conf:

UseReverseDNS           off
IdentLookups            off

We also limit the amount of CPU/memory resources used (e.g. to minimize Globbing resources):

RLimitCPU               session 10
RLimitMemory            session 4096K

We allow a maximum of 200 concurrent ftp sessions:

MaxInstances            200
MaxClients              200

Rsync

We use rsyncd (standalone daemon). We disable compression and checksumming in rsyncd.conf:

dont compress = *
refuse options = c delete

For ftp and rsync, the contents of /mirror/root/include/motd.msg are displayed when users connect.