User:Sbarnes

From OSGeo
Revision as of 11:44, 31 January 2007 by Wiki-Sbarnes (talk | contribs)
Jump to navigation Jump to search

Sandbox Page for osgeo.org transition docs

Description of current layout and installed software

Notes from Shawn on our PEER1 system:

  • OS Version: Red Hat Enterprise Linux ES release 4 (Nahant Update 4)
  • For most elements of system i tried to stay with the default redhat locations and red hat el 4 rpms installed from peer 1's up2date repository. Reasoning, the servers are updated automatically against this repository and supported by PEER1 - reduce sysadmin load on keeping packages updated by using packages not available through PEER1 repository

Installed software using up2date

  • apache - httpd-2.0.52-28.ent.i386
  • postfix - postfix-2.2.10-1.RHEL4.2.i386
  • php - php-4.3.9-3.22PIDH.i386
  • python - python-2.3.4-14.3.i386
  • mailman - mailman-2.1.5.1-34.rhel4.5.i386

Red Hat EL 4 rpms installed manually (rpm -i)

  • MySQL-client-standard-5.0.27-0.rhel4.i386.rpm
  • MySQL-server-standard-5.0.27-0.rhel4.i386.rpm
  • MySQL-devel-standard-5.0.27-0.rhel4.i386.rpm
  • MySQL-shared-compat-5.0.27-0.rhel4.i386.rpm
  • clearsilver-0.10.1-1.2.el4.rf.i386.rpm
  • sqlite-2.8.16-1.2.el4.rf.i386.rpm
  • python-clearsilver-0.10.1-1.2.el4.rf.i386.rpm
  • python-sqlite-1.0.1-12.el4.rf.i386.rpm
  • subversion-1.4.3-0.1.el4.rf.i386.rpm
  • mod_dav_svn-1.4.3-0.1.el4.rf.i386.rpm

Not specific to Red Hat EL 4 rpms installed manually

  • MySQL-zrm-1.1.2-1.noarch.rpm

Source Install

  • drupal-4.7.4.tar.gz
  • phpldapadmin-0.9.8.3.tar.gz
  • trac-0.10.3.tar.gz

Paths to services directories

Apache root directory 

   /var/www/html/

Subversion parent directory 

   /var/www/svn/repos/

Trac parent directory 

  /var/www/trac/

IP tables custom

All iptables rules must be written in /etc/sysconfig/iptables-custom

Current custom rules are:

/etc/sysconfig/iptables-custom/SSH 

  *filter
  -A OUTPUT -p tcp --dport 22 -j ACCEPT
  COMMIT

/etc/sysconfig/iptables-custom/VERITAS

note: this file was placed here by PEER1 

  *filter
  -A INPUT -s 10.0.48.0/24 -d 0/0 -p tcp -j ACCEPT
  -A OUTPUT -s 0/0 -d 10.0.48.0/24 -p tcp -j ACCEPT
  COMMIT

System login and maintenance procedures

Note: if change root password must let PEER1 know the new password for backup/restore and tickets. i would refer no root ssh login but, PEER1 admins need root access.

Subversion maintanence

Creating a repository

  $ sudo mkdir /var/www/svn/repos/<repo_name>
  $ sudo svnadmin /var/www/svn/repos/<repo_name>
  $ sudo chown -R apache:apache /var/www/svn/repos/<repo_name>

Loading a repository from a dumpfile

  $ sudo svnadmin load /var/www/svn/repos/<repo_name> < /path/to/dumpfile
  $ sudo chown -R apache:apache /var/www/svn/repos/<repo_name>

Dumping a repository

  $ sudo svnadmin dump /var/www/svn/repos/<repo_name> > dumpfile

Recovering / unlocking repository

  • subversion may lock if user ctl-c during checkout or checkout is interupted with an apache restart
  • Need policy on who to contact and who can run 'svnadmin recover' as

priviledged access is needed (may need to stop/start apache to drop requests to repository before recover)

Subversion was upgraded to version 1.4.3 (30 Jan. 2007) to reduce the repository locking problem if ctl-c used to end a checkout.

If the repository locks the following command should be used to recover the repository: 

  $ sudo svnadmin --wait recover /var/www/svn/repos/<repo_name>
  $ sudo chown -R apache:apache /var/www/svn/repos/<repo_name>

In most cases this will work in the odd case that you are waiting a very long time for the command to run then apache may have to be restarted to drop anything accessing the repository and preventing the repository from being recovered 

  $ sudo /sbin/service httpd restart
  $ sudo svnadmin --wait recover /var/www/svn/repos/<repo_name>
  $ sudo chown -R apache:apache /var/www/svn/repos/<repo_name>

Backups

Daily tape backup

  • PEER1 is doing daily tape backup of entire system

Other backups

Mysql

MySQL is being backed up using MySQL-zrm

subversion backups

via svnadmin dump to /home/back/svn_dump/ (every 3 hours)

trac backups

via trac-admin hotcopy to /home/back/trac_copy/ (every 3 hours)

current cron jobs for backups

/etc/cron.d/backup.cron 

  #### Backup cron jobs 
  # min hour day month dayofweek user command
  #
  # Daily rsync to /home/back
  # /etc
  05 10 * * * root /usr/bin/rsync -a --delete /etc/ /home/back/etc/
  # /var/www/html
  08 10 * * * root /usr/bin/rsync -a --delete /var/www/html/ /home/back/html/
  # Every 3 hours 
  # /var/lib/mailman
  20 */3 * * * root /usr/bin/rsync -a --delete /var/lib/mailman/ /home/back/mailman/
  # /etc/mysql-zrm
  33 */3 * * * root /usr/bin/rsync -a --delete /etc/mysql-zrm/ /home/back/etc/mysql-zrm/
  # /var/lib/mysql-zrm
  34 */3 * * * root /usr/bin/rsync -a --delete /var/lib/mysql-zrm/ /home/back/mysql-zrm/
  # call backup_trac_svn.sh to backup 
  # subversion /var/www/svn/repos
  # trac /var/www/trac
  45 */3 * * * root /root/scripts/backup_trac_svn.sh
  # once a day rsync /home/back to osgeo2.osgeo.net
  0 22 * * * root /root/scripts/rsync_back.pl


Implementation of our virtual hosts policy and transition issues

FDO Repository Merge

To merge repositories you need to parse through the dumpfiles.

In the fdo merge all subprojects had the same directory strucuture, /trunk/Providers/ All dumpfiles had to be 'filtered' to just pull the /trunk/Providers/* and drop branches and tags.


SVNDUMPFILTER

$ svndumpfilter include --help 

Filter out nodes without given prefixes from dumpstream

Usage: svndumpfilter include PATH_PREFIX Options: --drop-empty-revs Remove revisions emptied by filtering --renumber-revs Renumbe revisions left after filtering --preserve-revprops Don't filter revision properties --quiet Do not display filtering statistics

$ svndumpfilter exclude --help Filter out nodes with given prefixes from dumpstream Usage: svndumpfilter exclude PATH_PREFIX Options: --drop-empty-revs Remove revisions emptied by filtering --renumber-revs Renumbe revisions left after filtering --preserve-revprops Don't filter revision properties --quiet Do not display filtering statistics


This process followed for all repositories

merge fdogdal trunk 

 $ cat fdogdal.dmp | svndumpfilter include trunk/www/ > fdogdal-merge-trunk.www.dmp
 $ cat fdogdal.dmp | svndumpfilter include trunk/Providers/ > fdogdal-merge-trunk.Providers.GDAL.dmp

edit file and remove lines, 

  Node-path: trunk/
  ....
  Node-action: add
  ....
  PROPS-END

  Node-path: trunk/www/
  ....
  Node-action: add
  ....
  PROPS-END

  Node-path: trunk/Providers/
  ....
  Node-action: add
  ....
  PROPS-END

Rename index.html to fdogdal-index.html 

 $ perl -pi.bak -e 's/^Node-path:\ trunk\/www\/index.html/Node-path:\ trunk\/www\/fdogdal-index.html/g' fdo-merge.trunk.dmp

 $ svnadmin load /var/www/svn/repos/fdocore < fdogdal-merge.trunk.dmp
Retrieved from "http://wiki.osgeo.org/w/index.php?title=User:Sbarnes&oldid=11178"