Introduction

TableOfContents

Final preparations

See page NewServersSetup/FinalPreparations.

Special topic pages about migration and new set-up

• AndrewFileSystem: Using our new shared filesystem

• DaemonAdmin: Daemon-specific pages aimed at admins

• DomTool: Administering and using the new domtool

• NewSystemHardware: Information on the new hardware

• TaskDistribution: What each sysadmin is responsible for

• SoftwareArchitecturePlans: Plans for software installation

• SystemArchitecturePlans: Plans regarding our hardware

• OneTimeCosts2007: Costs associated with the new servers through April 2007

The following are outdated:

• ColocationNextSteps: Listing of things to do after getting the hardware.

To-do list

Before beginning to migrate members

• Megacz
  • Make /afs/hcoop.net/common/etc/scripts/apache-sync-logs work
• mwolson
  • Upgrade deleuze to debian etch
  • Install denyhosts on both deleuze and mire, needs debian etch
  • Switch ssh on deleuze to listen to port 22, needs denyhosts
  • Perform testing on procmail and exim filter on deleuze.
  • Migrate site-specific (read: non-AFS) changes to apache 1.X on mire (read: check to see if this has already been done).

During migration

• Unclaimed
  • Watchdog process to kill resource hogs

  • Make ca@hcoop.net e-mail address working. It's the address that will be used in the certificate files.

  • Make sure somebody is reading mail sent to abuse@hcoop.net so we don't wind up on lame DNSBLs

  • Fix resolv.conf on both servers to have multiple good DNS servers for now, set it to use localhost once BIND is running and configured.
  • Figure out how to use Dell OMSA or other tools to monitor RAID and other hardware.
  • Migrate ejabberd mnesia db just before the dns switchover.

  • Set up back-up regime, possibly using [http://rsync.net/ rsync.net].

  • Get miscellaneous web stuff ported, like membership application, vmail password change, publicly-viewable statistics on membership, bandwidth usage stats, ....
  • Do performance testing on the new configuration, by having admins or other users monitor performance on mire (using vmstat, top, mytop, etc) and having one or more (perhaps multi-threaded) scripts requesting web pages from somewhere off of the Peer 1 network.
• mwolson
  • Run simple tests on cron to see if it works.
  • Mailman
    • The exim side of things has been mostly set up.
    • I think I migrated the non-exim stuff as well, but will need to double-check.
    • Need to think of a way to test this, perhaps with help from a migrated user.

Global Notes

• To edit LDAP database from a GUI tool, use gq program

• To connect to hcoop's ldap server using gq, create a SSH tunnel: ssh -p 2222 -f -N -L 389:localhost:389 USERNAME@69.90.123.67, and then connect to localhost:389 in gq.

• For the description of the actual authentication scheme, see AuthenticationScheme.

Tasks done

Deleuze

This machine donated by Justin Leitgeb seems real nice. Buffered disk throughput is about 1.5 GB/s. Raw disk reads are 60 MB/s for the two 36 GB disks and 120 MB/s for the 4-disk array. Not bad at all.

• Removed excessive packages, cleaned up the system

• Installed changetrack to monitor all config file changes. The program uses rcs and automatically keeps previous revisions. It is ran from cron on a daily basis.

• Installed debsums to monitor file md5sums

• Installed Courier IMAP and IMAP-SSL

• Installed LDAP for user authentication. The system is currently configured to use LDAP and fallback to the usual /etc/ files. Admin users will be added locally on all machines and will be able to log in even when LDAP is not operational.

• Installed MIT Kerberos 5

• Fixed date/time on the system. Installed ntpd

• Installed TLS support for LDAP. Certificate file is /etc/ldap/server.pem, and ldap/ldaps ports are 389/636.

• Installed Linux 2.6.18.3-grsec with 2.6.18-mm3 patches (2) for megaraid.

  • The patches and source tree installed, along with the .deb generated, is under /usr/src/ntk2. I set up sockets groups as on fyodor (7070-7072). SMP, with hyperthreading enhancements, is enabled. I also installed a bunch of packages that someone were uninstalled while I was gone (e.g., gcc). I also fixed the sudoers, wheel group, and admin home directories. --NathanKennedy

• Kerberos + LDAP works.

• Compiled requisite kernel modules, compiled and installed new OpenIPMI package, and installed dellomsa. Dell OMSA is now working. --NathanKennedy

• Install SSH.
• Permit new admins to log in by copying their SSH keys to their newly-created (empty) home directories.

• Install AFS (need to repeat the reading on AFS and how it really works. Also it will influence the decision how to format /dev/sdb in the system) -- DavorOcelic

• Install MySQL and PostgreSQL (input from AFS step and admin discussion needed to see how to exactly configure this).
• Install BIND.

• Install and configure Apache, to serve static web content only. --MichaelOlson

• Review kernel configuration and install testnet. -- DavorOcelic

• Configure exim4. --MichaelOlson

• Configure Courier IMAP daemons, reviewing fyodor's config. --MichaelOlson

• Migrate squirrelmail configuration settings from fyodor.

• Configure SquirrelMail to use imapproxyd, which should give speed improvements once we migrate to deleuze. --MichaelOlson

• Exim filters

  • (a method has been set up by MichaelOlson, but it needs testing).

• DNS server

  • Works on deleuze, although I will test once more domains have been migrated for reasonable domain defaults --JustinLeitgeb

• nscd process for name caching

  • Currently this processes is set to do hostname caching on deleuze, so bind will not be set up as a caching name server --JustinLeitgeb

• Get exim working on mire --MichaelOlson

Mire

• Installed new second SCSI hard drive, reinstalled debian, and configured the drives with software RAID-1. --NathanKennedy

• Configured Mire to work as a proper krb/ldap/afs client machine. --DavorOcelic

Custom software

• DomtoolTwo

• Vmail tools
• Web portal