1 / 16

Quattor-for-Castor

Quattor-for-Castor. Jan van Eldik Sept 7, 2005. Outline. Overview of Quattor @ CERN Central bits CDB template structure SWREP Local bits Updating profiles SPMA NCM Exercises Browsing CDB templates Changing RPMs with the SPMA Updating Lemon monitoring configuration

glenna-herring
Télécharger la présentation

Quattor-for-Castor

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Quattor-for-Castor Jan van Eldik Sept 7, 2005

  2. Outline • Overview of Quattor @ CERN • Central bits • CDB • template structure • SWREP • Local bits • Updating profiles • SPMA • NCM • Exercises • Browsing CDB templates • Changing RPMs with the SPMA • Updating Lemon monitoring configuration • Later: giving root access, adding new RPMs to the repository, configuring castor 

  3. Disclaimer(s) • This is very incomplete! • Focus is on “standard operations” • I am Just Another Quattor user tip of the day: Monkey see, monkey do

  4. CDB configuration database • “Global schema” to describe node • Written in homegrown PAN language (declarative and procedural bits) • Host templates profile_<hostname>.tpl, including more general templates pro_*.tpl • Compiled into XML files • Every node has a local copy of its configuration information • Very node-centric (by design)

  5. CDB - 2 • CDB updates can be (very) slow… • Most information also available in CDBSQL • i.e. in an Oracle database • asynchronous updates, can be very slow too…

  6. Example: profile_tpsrv901.tpl • From node specific to site specific • Overwriting of certain values • If-then-else, functions • Include-files make it hard to find where information comes from  • Software packages • Configuration info • Hardware description • Administrative information • serial console, info derived from landb, …

  7. Modify templates with cdbop • Useful commands: • help • list profile_tpsrv* • get profile_tpsrv901.tpl pro_system_tapeserver.tpl • !sh # drops you to a shell • !emacs profile_tpsrv901.tpl pro_system_tapeserver.tpl • update *.tpl • commit • Versioning available • Run on lxplus, NICE authentication

  8. Software repository SWREP • If you want to provide new RPMs…swrep-client put i386_slc3 myfile.rpm /cern/cc • Separate repositories • per architecture {i386,ia64,x86_64}_slc3 • OS i386_{slc3,rhes3} • On lxplus, uses ssh authentication

  9. On the nodes… • Synchronization between CDB and local profile is crucial!!! • But automagic: • Hosts are notified of profile changes • Hourly cron job, just in case… • You can /usr/bin/ccm-fetch by hand • List local cache, as rootncm-query –dump / | less

  10. Invoking SPMA to change RPM-set • PAN functions pkg_add() ,pkg_del(), pkg_repl() • SPMA can be configured to not touch packages it does not know about"/software/components/spma/userpkgs" = "yes"; "/software/components/spma/userprio" = "yes"; • SPMA can be forcefully disabled echo ‘disabling SPMA – JvE’ > /etc/nospma • Run (as root): spma_wrapper.sh[--noaction] [INFO] The following package operations are required: replace- SINDES 0.9 11 noarch with http://swrep/swrep/i386_slc3/ SINDES 0.9 12 noarch install http://swrep/swrep/i386_slc3/ stk-ssi-devel 2.3 0.cern i386 [INFO] Please be patient... 2 operation(s) to verify/execute. [OK] SPMA finished successfully.

  11. Configuring the node • NCM components configure servicesafs, sendmail, tapeserver, fmonagent, spma, … • All components on the nodencm-ncd –list • Configure access control and grubncm-ncd –configure access_control grub All-in-one: spma_ncm_wrapper.sh

  12. some hints ‘n tips… • Use wassh to run commands on multiple hostswassh –s slc3 root@castoradm uptime wassh root@lxfs60\[01-04] shutdown –r now • Quick check to see if Lemon is happy check-this-host • Disable alarm sendingecho ‘JvE did this’ > /home/operator/nomorealarms • Use serial console connect2console.sh l3006d # and pray :)

  13. #1 – use cdbop • Log on to lxplus, start cdbop, get the node profile of a tapeserver of my choice  • Log on as root to that tapeserver, and runncm-query –dump /hardware | less • Locate the serial number of the machine in both sessions • Locate the serial numbers of the harddisks in both sessions

  14. #2 – adding an RPM • Add to your tapeserver profile"/software/packages"= pkg_add("CERN-CC-PrepareInstall","2.3-0","noarch"); • Commit the change • Use ncm-query –dump /software/packages | lessand try to find the new package • Run spma_wrapper.sh to install the package • Run rpm –e CERN-CC-PrepareInstallto remove it • Re-run spma_wrapper.sh

  15. #3 – change Lemon alarm • Disable alarm sending on your tapeserver • Check the Sure alarms • Stop atd daemon with service atd stop • Check the Sure alarms again • Locate the “atd” monitoring configuration, starting at the Lemon website • De-activate it in the tapeserver profile“/system/monitoring/….…./active” = false; • Reconfigure fmonagent • The Sure alarm should be gone… • Reactive atd monitoring, start the daemon, re-enable alarm sending

  16. Follow-up • Adding new RPMs to SWREP,and deploying them on a cluster • Giving (root) access

More Related