{tech}.Ben Buckman.net

ssh webserver
 
## backup the webroot
cp -R /var/www /var/www-backup
# and/or
tar -czf ~/mysite-backup.tar.gz /var/www
 
# copy the site outside the live webroot (into home dir)
# (rsync parameters preserve links and permissions; see 'man rsync' for details)
mkdir ~/mysite-copy/
sudo rsync -rlpogt /var/www/ ~/mysite-copy/
 
# should be the same size
du -sh ~/mysite-copy; du -sh /var/www
 
# make svn space
svn mkdir http://svn/repo/mysite -m"creating import space for mysite"
svn mkdir http://svn/repo/mysite/tags -m"creating tags dir"
 
## import the folders that should be fully versioned from the copy
## don't import the folders that should be svn:ignore'd
## (here I'm making a date-stamped static "tag" copy and then copying to trunk for the future)
cd ~/mysite-copy
svn import somedir http://svn/repo/mysite/tags/mysite-webserver-MMDDYY/somedir -m"importing mysite somedir"
# ... repeat for other directories
 
  # check what's worth versioning in the root
  du -hc --max-depth 1
 
    ## (might need to fix ownership and permissions for import to work, e.g.
      sudo chgrp -R webgroup .
      sudo chmod -R g+rwx .
    ## or just sudo the whole import
    ## if import fails, restart it (server seems to handle, no partial imports)
 
 
## checkout the [partially imported] site
mkdir ~/mysite-checkout
cd ~/mysite-checkout/
svn co http://svn/repo/mysite/tags/mysite-webserver-MMDDYY/ ~/mysite-checkout/
 
# copy everything over checkout
rsync -rlpogt ~/mysite-copy/ ~/mysite-checkout/ --progress
 
## put other folders in svn:ignore
## (can be done several ways, this requires manual editing but is simple)
## find folders in mysite-copy root, pipe thru sort, save to .svnignore
for D in `find . -type d -mindepth 1 -maxdepth 1`; do 
  echo ${D##./}
done | sort > .svnignore
 
## then remove the imported files/folders imported, remove .svn
nano .svnignore
 
# once .svnignore is good,
svn propset svn:ignore . -F .svnignore
# (remember to keep those in sync, so the file is always a reference for propset'ing)
 
# confirm ignores, no changes
svn status
# or to see everything,
svn status --no-ignore
# DO NOT DO 'svn add *' !!! -- that will add the ignored dirs!
 
# add root files 
# (this only adds what appears in the status report; I'm borrowing this from someone else)
svn status | sed -ne "/^?/ {s/^? *//;s/ /\\\ /g;p;}" | xargs svn add
 
# commit
svn commit ~/mysite/checkout -m"A VERY DESCRIPTIVE MESSAGE"
 
## (I ran into conflicts here with case-sensitive duplicates; 
## in that case, identify and delete the extras, svn cleanup, commit again)
 
## make sure /trunk doesn't exist already (otherwise it'll go into a subfolder)
svn ls http://svn/repo/mysite/trunk
svn cp http://svn/repo/mysite/tags/mysite-webserver-MMDDYY http://svn/repo/mysite/trunk -m"copying mysite-webserver tag to trunk"
 
## make sure all subsequent commits go to the trunk
svn switch http://svn/repo/mysite/trunk
 
## checkout again into a directory parallel to the webroot
sudo mkdir /var/www-WC
cd /var/www-WC/
# (using sudo here, then fixing the permissions; might not be necessary in all cases)
sudo svn co http://svn/repo/mysite/trunk/ /var/www-WC/
sudo chgrp -R webgroup /var/www-WC
sudo chmod -R g+rw /var/www-WC/
 
## copy everything else (and recently updated files)
sudo rsync -rlpogt /var/www/ /var/www-WC/ --progress
## (run twice, 2nd time should have little/no output)
 
# check size & differences (excluding SVN data)
du -sh --exclude .svn /var/www/; du -sh --exclude .svn /var/www-WC/
diff --recursive --exclude .svn /var/www /var/www-WC
# (assuming it's identical or close enough...)
 
## commit anything newer...
 
## at this point it's worth checking with your sysadmin (if you're not a sysadmin yourself) that any load-balancer exports or the like are shut off
 
## MAKE SURE ALL RELEVANT STAKEHOLDERS ARE OK WITH THIS BEFORE DOING
## flip the webroot
sudo mv /var/www /var/www-OLD; sudo mv /var/www-WC /var/www;
 
## test it, du and diff again
## keep the -OLD directory for a while just in case, or tarball it and put it somewhere else