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(Latest | Earliest) View (newer 50 | older 50) (20 | 50 | 100 | 250 | 500)- 21:19, 25 March 2009 Cron (hist) [1,809 bytes] Ckennelly@ugcs.caltech.edu (Talk | contribs) (Start of technical documentation.)
- 20:03, 24 December 2008 Mail (hist) [3,858 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: Mail is one of the most important (and most complex) systems on UGCS. Our current mailserver is Hermes, with Kabta as a backup. ==Overview of incoming system== * Incoming mail go...)
- 07:25, 18 December 2008 Email Virtualhost (hist) [219 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: It would be wonderful if we could virtual-host email domains just like we do for websites. This will require careful modification of postfix's main.cf, as well as probably some custom lda...)
- 18:52, 17 December 2008 Someone Cant Login (hist) [767 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: If someone complains that they "can't sign on", here is the list of things to check: # Do they need to migrate their password? Check hermes:/root/migration_auth.log and grep for their us...)
- 20:47, 16 December 2008 AFS Backups (hist) [2,452 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: AFS backups are done through the AFS backup daemon. See the AFS administrator's guide for details on how this works. We usually run a butc through a root screen session on persephone. T...)
- 20:08, 16 December 2008 Wishlist Groups (hist) [284 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: It'd be nice to set something up so that people can make their own groups, kinda like dropgroup. Also, we would like a way to mark an account as a "club" account so PW resets can be done ...)
- 20:05, 16 December 2008 Wishlist PGP (hist) [166 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: We kinda have a PGP thing in the account creator, but it's not tied to anything else. It'd be nice to make PGP more integrated in our cluster. Category:Wishlist)
- 23:01, 13 December 2008 Kerberos (hist) [3,460 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: UGCS uses Kerberos for all of our authentication needs. See [http://www.cs.ru.ac.za/courses/Honours/mmcourse/security/Kerberos/The%20Moron%27s%20Guide%20to%20Kerberos,%20Version%201_2_2.h...)
- 07:22, 13 December 2008 Virtual IPs (hist) [1,105 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: UGCS uses "virtual ip's" for a variety of reasons. A virtual IP is an IP that doesn't necessarily always correspond to the same computer, so it can be used for services that move between ...)
- 07:10, 13 December 2008 Account Creator (hist) [2,175 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: This page describes both sides of the account creator (user interface and administrator part) ==Login for newacct@to== The login shell for newacct is set to /afs/ugcs/public/newacct/accou...)
- 01:57, 5 October 2008 New misc policies (hist) [51 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: =New policies= Here are some proposed new policies:)
- 19:49, 3 October 2008 2008-2009 Budget (hist) [3,522 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: We have $5000 to spend. Here are some possible budget items: ==LCD Monitors== We need some. Badly. I hate the )%^* CRT's. * 5x $200 22in [http://www.newegg.com/Product/Product.aspx?Ite...)
- 03:35, 22 September 2008 Logging (hist) [513 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: All syslog messages from UGCS are sent to charon through syslog-ng. They are then placed in charon:/var/log/<hostname>/<logname> Splunk tail's the log files and gets its input from there...)
- 22:31, 21 September 2008 Apache (hist) [3,881 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: UGCS uses Apache2 to do our webserving. However, we have a number of customizations to make it work nicely with AFS etc. =Basic info= * Currently www.ugcs.caltech.edu is a CNAME for pose...)
- 17:29, 23 August 2008 End of summer discussions (hist) [1,512 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: We have a few issues that we need to start thinking about to plan for the next year. ==Athena== Problem: The machine that once was athena is dead. We have a few options: * Fix athena us...)
- 07:23, 23 August 2008 Documentation:Index (hist) [35 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: =Documentation= Under Construction!)
- 04:15, 7 August 2008 DNS (hist) [2,137 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: DNS is provided through bind on demeter. We control the zones for ugcs.caltech.edu, and the reverse zones for 131.215.176.64-127. We also have control of ugcs.net and ugcs.org, although ...)
- 07:17, 10 June 2008 DRBD (hist) [1,962 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: DRBD handles the disk stuff. It's kinda like raid1 but over a network. Sometimes the nodes may refuse to connect. If this happens, check 'dmesg' for the message drbd1: Split-Brain det...)
- 00:12, 8 June 2008 Heartbeat (hist) [3,710 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: Heartbeat is a daemon that handles all the failover in the cluster. For starters, see http://linux-ha.org/ . We are running Heartbeat V2. ==crm_resource== crm_resource is a command that...)
- 05:09, 6 June 2008 Kabta (hist) [1,262 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: Kabta (a Sumerian god) is an off-site secondary server. It will sit in the Ruddock computer lab (we should buy a UPS for it sometime). =Services= * Backup mail * Monitoring)
- 07:43, 31 May 2008 June 2008 Downtime Plan (hist) [2,646 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: We need to start planning for our downtime in late June.)
- 20:13, 17 May 2008 Lab Improvements (hist) [190 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: It'd be nice if we could make the lab neater, more friendly, and more comfortable. * New couch $600+ * New tables * New chairs * LCD monitors * Stuff on the walls * Working LEDNET [[Ca...)
- 07:21, 9 May 2008 Failover (hist) [3,132 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: We currently only have redundancy in kerberos and ldap. We really should make our other critical services (mail and web) redundant. We should also set up a failover NFS server for shell...)
- 07:11, 9 May 2008 Gale (hist) [330 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: Gale is a instant-messenging protocol that UGCS used to support. It would be really nice to have it again. ==Status== Packages are currently mostly done- see ~elizabeth/build/gale She s...)
- 06:59, 9 May 2008 Website wishlist (hist) [449 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: It'd be nice if we had a slicker website, and more documentation. ==Comments on the current website== * The visual layout is kinda bland * Documentation can be kinda hard to find. I th...)
- 06:57, 9 May 2008 User cron (hist) [793 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: Users can currently run crontabs on individual shellservers, but if the machine gets rebooted, the crontab is lost. It would be nice to have an integrated system so that users can specify...)
- 06:54, 9 May 2008 Quota notices (hist) [283 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: We don't have any system of automatically letting users know they are low on quota. Perhaps an email reminder or login message would be appropriate? Priority: Medium [[Category:Wishlist...)
- 06:51, 9 May 2008 Apt Repository (hist) [2,096 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: It would be really nice to have our own apt repository to distribute our own packages. For example, we have customized versions of bacula that need to get to all of the servers. We coul...)
- 06:45, 9 May 2008 Software Updater (hist) [1,143 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: Currently, we have to run updates on each machine manually. It would be nice to do this all at once, from one place. Cfengine has "package support", but it's pretty rudimentary and doesn...)
- 22:02, 30 April 2008 Ldap (hist) [2,656 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: Our IANA PEN is 1.3.6.1.4.1.8186.12. We were given this number by Caltech. See http://www.openldap.org/doc/admin22/schema.html for help on editing schemas. =Attribute Types= Attribute t...)
- 21:28, 28 April 2008 Partitioning Best Practice (hist) [1,940 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: =Partitioning Best Practice= Unless noted otherwise, please follow these best practices in partitioning disks for servers in UGCS. *You should always set up your disks as RAID-1, even if...)
- 21:00, 21 April 2008 Bacula (hist) [1,524 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: =Bacula= Bacula is an advanced backup daemon. See http://www.bacula.org/en/ for complete docs. On UGCS, persephone runs the bacula director and storage daemons, and every coreserver r...)
- 20:51, 21 April 2008 Database Backups (hist) [2,429 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: ==Mysql== Unfortunately, you need to pay for online backup tools for mysql. Instead of that, you can use the following procedure: # Run the SQL command "flush tables with read lock" # C...)
- 20:39, 21 April 2008 Bacula Setup (hist) [1,878 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: =How to set up Bacula= These instructions are for adding a new machine to bacula. # Add it to /etc/bacula/bacula-dir.conf on persephone. This makes it so that the Bacula Director knows ...)
- 04:42, 20 April 2008 Meeting Minutes April 6 2008 (hist) [126 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: =Meeting Minutes for April 6, 2008= * Present: Alex, Joshua, Matt * Vote to approve Chris and Edmond as new sysadmins: 3-0-0)
- 00:46, 20 April 2008 Hera (hist) [1,102 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: =Hardware= * Dell Poweredge 2U Rackmount server (it sits below above persephone) * Located in the right rack * Acquired from CS department (free) in 1Q 2008 * Dual PIII Xeon * 1GB ram * 2...)
- 01:29, 15 April 2008 Remctl (hist) [3,556 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: =Remctl= Here is a list of all the remctl commands that are running on various UGCS servers:)
- 04:03, 3 March 2008 Backup schedule (hist) [1,631 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: =On-site dumps= * /quarter: Dumped Feb. 28, 2008 ** /quarter/month1: Feb 28- March 29, 2008 *** /quarter/month1/week1: Feb 28- Feb 29, 2008 *** /quarter/month1/week2: Sunday, March 1, 2008...)
- 08:08, 28 February 2008 Persephone (hist) [2,007 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: Persephone is our current backup server. =Tape drive= The tape drive is a Certance LTO-2 tape drive. You can find downloads from Quantum's site [http://www.quantum.com/ServiceandSupport...)
- 19:28, 20 February 2008 Hermes upgrade (hist) [1,441 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: Plan to upgrade Hermes by adding 3 new 146gb disks: ==Pre-downtime== * Create a mail server that only softbounces mail (probably on hephaestus) ** Add this server as a MX record for our d...)
- 09:35, 19 February 2008 February 2008 email (hist) [1,919 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: Dear UGCS users, The past few weeks have been busy for us in UGCS. We received an MHF grant to purchase some new server equipment. UGCS now has a full tape backup system with off-sit...)
- 02:19, 8 February 2008 Backup tape rotation (hist) [877 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: Now that we (will) have a tape backup system, we need to make a tape rotation system. ==Data to back up== * Home directories: Currently 200GB * Mail: Currently 17GB * Server backups: Pr...)
- 19:35, 2 February 2008 Setup gale (hist) [144 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: * Current stuff is in ~elizabeth/build/gale * See http://gale.org for source, documentation)
- 06:23, 14 January 2008 Sysadmin Survey (hist) [6,745 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (Old sysadmin survey (2001))
- 02:38, 14 January 2008 Meeting Minutes Jan 27 2008 (hist) [32 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: ==Agenda== * Jr Sysadmin Program)
- 04:00, 10 January 2008 Meeting Minutes Jan 9 2008 (hist) [634 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: ==Minutes== * ==Agenda== * MHF grant * Impact Statement * Jr. Sysadmin Program * Goals for the term)
- 11:19, 18 December 2007 MHF Impact Dec 07 (hist) [7,124 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: =MHF Impact Statement= ==Overview== Since February 2007, UGCS has ==Finances== ==Advertising== ==The Future==)
- 01:18, 16 December 2007 Hephaestus (hist) [619 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: =Hardware= * Dell Poweredge 860 1U Rackmount server (it sits below poseidon, and above demeter. It is 3rd from the bottom) * Express Service Tag HVR9MD1 * Service Code * Located in the r...)
- 09:31, 7 December 2007 Poseidon (hist) [1,094 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: =Hardware= * Dell Poweredge 860 1U Rackmount server (it sits on top of hephaestus) * Express Service Tag 36748767349 * Service Code GVR9MD1 * Located in the right rack, second from the bo...)
- 01:49, 7 December 2007 Meeting Minutes Dec 9 2007 (hist) [1,791 bytes] Jdhutchin@ugcs.caltech.edu (Talk | contribs) (New page: ==Agenda== * Lab improvements ** Audio server system ** Physical security * Junior Sysadmin Program ** Recruitment ** Sysadmin survey * Helper system for breaks ** Anyone know someone who ...)
