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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 == * 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 == TODO == In order of implementation (soonest first): * Get Kerberos and LDAP working completely. There's just ''some small bit'' to do to get everything working. -- 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 |
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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| = Global TODO = | <<TableOfContents>> |
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| * Make ca@hcoop.net e-mail address working. It's the address used in the certificate files. | |
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| = Global Notes = | == To be an admin == |
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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''. |
Sections you should read if you are interested in being an admin. {{{#!wiki tip 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). }}} === 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. * DaemonDocumentation: manuals for core services with which you should be familiar * SystemArchitecture * DomTool * MitKerberos * AndrewFileSystem * EtcKeeper * [[Code]]: Details of HCoop-specific code kept in git.hcoop.net * [[OpenLDAP]] == Planning and Records == * ToDo: Both short term and longer term meta-planning. * 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 == Hardware / On-Site Infrastructure == * [[Hardware]]: information on the colocation facility and the physical/virtual machines we are using. Tips on using service processors etc. are here. * InstallationProcedure: how to install a machine that adheres to our policies * KernelVirtualMachine: how we are using libvirt * SetupNewMachines: The ''old'' guide to installing a machine that adheres to our policies * KvmAccess: How to use the remove KVM and avoid going on site == Software == This documents all software things that are not specific to the on-site infrastructure. === General Sysadmin === Documentation useful for the daily care and feeding of our systems. * AuthenticationScheme * BackupInfo: Information on how to recover deleted files from our off-site backups. * DebianPackaging: How to make custom HCoop Debian packages, and details on our debian archive * ConfigurationManagement: How we manage system wide configuration * SystemAuthentication lists authentication * UserManagement * MemberFreezing: How to freeze and unfreeze members who get behind on dues * AdminUserSetup, AddingNewAdmins, ChangingAdminPassword: lists steps to create (blank), delete, and change passwords of admin users. === Specific Services === Documentation of interest to people maintaining particular services. <<Include(DaemonAdmin, ,to="^----$")>> * DomTool * Web * CertificateAuthority: How to sign user SSL certificates and the like. * WebServicesAdmin: How to administer hcoop provided web services * VersionControlAdmin * [[BugZilla]] == Historical == Pages no longer considered relevant, but may be of historical interest or otherwise useful as source material for updated documentation. * AFS / Kerberos * SetupNewAfsServer: How to set up a new AFS server. * PrincipalsForNonHumans talks about kerberos for automated tasks. * MailMan contains no information... * SpamAssassinAdmin * UsingResourceLimits * DaemonFileSecurity * ResourceLimits * TipsAndTricks * 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) * [[Migration2009]] (never happened, staying at Peer1 was a better choice after all) * [[Migration2009/SoftwareSetup]] * InstalledSoftware ---- CategorySystemAdministration |
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.
Contents
To be an admin
Sections you should read if you are interested in being an admin.
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).
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.
DaemonDocumentation: manuals for core services with which you should be familiar
Code: Details of HCoop-specific code kept in git.hcoop.net
Planning and Records
ToDo: Both short term and longer term meta-planning.
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
Hardware / On-Site Infrastructure
Hardware: information on the colocation facility and the physical/virtual machines we are using. Tips on using service processors etc. are here.
InstallationProcedure: how to install a machine that adheres to our policies
KernelVirtualMachine: how we are using libvirt
SetupNewMachines: The old guide to installing a machine that adheres to our policies
KvmAccess: How to use the remove KVM and avoid going on site
Software
This documents all software things that are not specific to the on-site infrastructure.
General Sysadmin
Documentation useful for the daily care and feeding of our systems.
BackupInfo: Information on how to recover deleted files from our off-site backups.
DebianPackaging: How to make custom HCoop Debian packages, and details on our debian archive
ConfigurationManagement: How we manage system wide configuration
SystemAuthentication lists authentication
MemberFreezing: How to freeze and unfreeze members who get behind on dues
AdminUserSetup, AddingNewAdmins, ChangingAdminPassword: lists steps to create (blank), delete, and change passwords of admin users.
Specific Services
Documentation of interest to people maintaining particular services.
We've recorded some special instructions, hints, etc., for daemons with non-standard configuration.
- Web
CertificateAuthority: How to sign user SSL certificates and the like.
WebServicesAdmin: How to administer hcoop provided web services
Historical
Pages no longer considered relevant, but may be of historical interest or otherwise useful as source material for updated documentation.
- AFS / Kerberos
SetupNewAfsServer: How to set up a new AFS server.
PrincipalsForNonHumans talks about kerberos for automated tasks.
- Mail
MailMan contains no information...
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)
Migration2009 (never happened, staying at Peer1 was a better choice after all)