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Differences between revisions 2 and 148 (spanning 146 versions)
⇤ ← Revision 2 as of 2006-11-21 21:56:06 →
Size: 4330
Editor: ri02-128
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← Revision 148 as of 2010-03-29 12:06:32 → ⇥
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Editor: DavorOcelic
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Deletions are marked like this. Additions are marked like this.
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= Deleuze = #pragma section-numbers off
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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. = Admin Area =
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== Tasks done == Links to detailed policies, procedures and information specific to HCoop. The resources here should allow HCoop admin team members to share information about every part of the complete system, and to allow easier training of future team members.
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 * 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 works.		 From my experience, I would recommend longer pages, instead of dividing a topic into lots of subpages. When there are too many subpages, I've found that some will be updated, and some will fall out of date. (Of course, use your judgment here.)
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== TODO == Admins: it is recommended that you watch the changes [[http://wiki.hcoop.net/RecentChanges?action=rss_rc&diffs=1&ddiffs=1|RSS feed]] to keep informed of what everyone is up to. Then, please document all of your work on here somewhere - that way we will not only have a record, but everyone gets notified about what is going on. Alternatively, you can create a wiki account and subscribe to the page regex `.*` (all pages).
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In order of implementation (soonest first):

 * LDAP working with kerberos. Documentation on this is lacking. -- DavorOcelic
 * 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.
 * 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) -- DavorOcelic
 * Install BIND -- DavorOcelic
 * Review kernel configuration and install testnet. -- DavorOcelic
 * See why db4.2 recover takes a long time on LDAP restart if anything is modified in the directory -- DavorOcelic
 * Install and configure Apache, to serve static web content only.
 * Get domtool2 working (this to be done concurrent with mire).

== Problems ==

 * When executing '''kinit; ldapsearch -H ldaps:/// -I -b "" -s base -LLL supportedSASLMechanisms''', instead of the correct answer, LDAP server dumps "Cannot open /etc/sasldb2" in error logs. This is a Berkeley DB file used when SASL assumes plain text identification, but here this is not the case (we want Kerberos authentication). I think the problem is in the lack of "{KERBEROS}" password type in userPassword LDAP field. I need to see if the problem simply consists of adding this option in the schema, or its unavailability suggests that LDAP can't do that. -- DavorOcelic
 * With ''debsums'', once you break md5sum of a config file, the file keeps being reported as mismatching even if you completely regenerate md5sums for a package!! -- DavorOcelic
 * The logical volume for /dev/sdb is supposed to be a 4-drive raid array, each drive ~73GB. Right now it seems to be configured as RAID1 mirroring the two drives, for a capacity of ~146G (see dmesg, for instance). This would be faster and the volume would be 73G bigger if it was set up as RAID5. I might need to do this from console, and I need to talk to Justin about it, since he set up the logical volumes and I thought he said that sdb was RAID5. --NathanKennedy

= Custom software =

 * DomtoolTwo
 * Vmail tools
 * Web portal
 * Watchdog process to kill resource hogs

These are my responsibility. Right now, I'm waiting for the more traditional stuff to be set up and stable before beginning. --AdamChlipala		 <<TableOfContents>>
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= Global TODO =
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 * Make ca@hcoop.net e-mail address working. It's the address used in the certificate files. == To be an admin ==
Sections you should read if you are interested in being an admin.
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= Global Notes =  * TipsAndTricks
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 * 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@69.90.123.51''', and then connect to ''localhost:389'' in ''gq''.		 === Admins and Admin Responsibilities ===
 * TaskDistribution: What each sysadmin is responsible for.
 * VolunteerResponsePolicy: Guidelines for responding to requests and email.
 * AdminArea/ListOfVolunteers who can help us do stuff...
 * AdminGroup: Listing of people who can delete pages and despam pages on the wiki.

=== Introductory material ===

Refer to documentation of each of the listed components. The information in our Wiki pages covers only the most basic principles, and quickly focuses on HCoop-specific setup, assuming skillset with the technology.

 * DaemonFileSecurity
 * DomTool
 * AuthenticationScheme
 * [[OpenLDAP]]
 * MitKerberos
 * AndrewFileSystem
 * EtcKeeper
 * [[Code]] - Details of HCoop-specific code kept in git.hcoop.net

== Planning and Records ==

 * ToDo: Both short term and longer term meta-planning.
 * [[Migration2009]]
   * [[Migration2009/SoftwareSetup]]
   * Migration2010Notes: Notes about the new server setup and way to transfer over old data

=== Technical Records ===
 * IpAddresses: Listing of IPs that we use.
 * [[Hardware]]: Information on HCoop hardware.
 * HcoopAddresses: Physical addresses relevant to us.
 * OnSiteVisits: Records of visits by HCoop volunteers to our colocation facilities


=== Views ===

 * Fritz.hcoop.net - [[http://fritz.hcoop.net/munin/|Munin reports]]


== Specific Machines ==
This documents machine-specific (hardware) things, or specific configuration necessary for ''that machine''.

 * [[Hardware]]
 * SetupNewMachines: How to install a machine that adheres to our policies
 * KvmAccess: How to use the remove KVM and avoid going on site.
 * deleuze
   * PowerEdge2850 is about '''deleuze'''
   * RebootingDeleuze: Steps to take after rebooting deleuze.
 * mire
   * RebootingMireSp: How to reboot mire using its SP interface.
 * hopper
   * HopperServiceProcessor
 * fritz
   * FritzInfo
 * outpost


== Services ==
This documents all software things that are not machine specific.

=== General Sysadmin ===

 * BackupInfo: Information on how to recover deleted files from our off-site backups.
 * DebianPackaging: How to make custom HCoop Debian packages.
 * ResourceLimits
 * InstalledSoftware lists non-debian installed software.
 * SystemAuthentication lists authentication
 * UsingResourceLimits If this is still accurate, we should move it to MemberManual area.
 * Member Management
   * UserManagement only talks about adduser/deluser right now.
   * MemberFreezing: How to freeze and unfreeze members who get behind on dues
   * AdminUserSetup lists steps to create (blank), delete, and change passwords of admin users.
   * ChangingAdminPassword: How admins can change their UNIX passwords.

=== Specific Services ===
 
 * DaemonAdmin: How to set up various daemons (NOTE: many of the services below are linked from here. We should migrate the contents of this page onto the outline below.).
 * AFS / Kerberos
   * SetupNewAfsServer: How to set up a new AFS server.
   * PrincipalsForNonHumans talks about kerberos for automated tasks.
 * Mail
   * MailMan contains no information...
   * SpamAssassinAdmin
 * DomTool
 * Web
 * DNS
   * ZoneTransfers is also mostly blank.
 * Databases
 * Backups
 * Version Control
 * wiki.hcoop.net
 * jabber
 * Other
   * CertificateAuthority: How to sign user SSL certificates and the like.


== Historical ==

Pages no longer considered relevant:

 * SoftwareArchitecturePlans: Plans for software installation.
 * SystemArchitecturePlans: Plans regarding our hardware.
 * InstallationLog contains ancient (~2005) records of installation of software and hardware
 * KrunkInfoz (Krunk is out of service)

Admin Area

Links to detailed policies, procedures and information specific to HCoop. The resources here should allow HCoop admin team members to share information about every part of the complete system, and to allow easier training of future team members.

From my experience, I would recommend longer pages, instead of dividing a topic into lots of subpages. When there are too many subpages, I've found that some will be updated, and some will fall out of date. (Of course, use your judgment here.)

Admins: it is recommended that you watch the changes RSS feed to keep informed of what everyone is up to. Then, please document all of your work on here somewhere - that way we will not only have a record, but everyone gets notified about what is going on. Alternatively, you can create a wiki account and subscribe to the page regex .* (all pages).

Contents

  1. Admin Area
    1. To be an admin
      1. Admins and Admin Responsibilities
      2. Introductory material
    2. Planning and Records
      1. Technical Records
      2. Views
    3. Specific Machines
    4. Services
      1. General Sysadmin
      2. Specific Services
    5. Historical

To be an admin

Sections you should read if you are interested in being an admin.

Admins and Admin Responsibilities

Introductory material

Refer to documentation of each of the listed components. The information in our Wiki pages covers only the most basic principles, and quickly focuses on HCoop-specific setup, assuming skillset with the technology.

Planning and Records

Technical Records

Views

Specific Machines

This documents machine-specific (hardware) things, or specific configuration necessary for that machine.

Services

This documents all software things that are not machine specific.

General Sysadmin

Specific Services

Historical

Pages no longer considered relevant:

AdminArea (last edited 2020-08-23 22:16:03 by ClintonEbadi)