Procedure A.2. Removing OpenStack specific application data and packages

• Copy the following script into a file and then run it.

  # Warning! Dangerous step! Destroys VMs
  for x in $(virsh list --all | grep instance- | awk '{print $2}') ; do
      virsh destroy $x ;
      virsh undefine $x ;
  done ;
  
  yum remove -y "*openstack*" "*nova*" "*keystone*" "*glance*" "*cinder*" "*swift*" "*rdo-release*";
  
  # Optional - makes database cleanup cleaner.
  # If you do this bit, the database cleanup stuff below is superfluous.
  # yum remove -y "*mysql*"
  
  ps -ef | grep -i repli | grep swift | awk '{print $2}' | xargs kill ;
  
  rm -rf  /etc/yum.repos.d/packstack_* /var/lib/glance /var/lib/nova /etc/nova /etc/swift \
  /srv/node/device*/* /var/lib/cinder/ /etc/rsync.d/frag* \
  /var/cache/swift /var/log/keystone /tmp/keystone-signing-nova ;
  
  # Ensure there is a root user and that we know the password
  service mysql stop
  cat > /tmp/set_mysql_root_pwd << EOF
  UPDATE mysql.user SET Password=PASSWORD('MyNewPass') WHERE User='root';
  FLUSH PRIVILEGES;
  EOF
  
  # mysql cleanup
  /usr/bin/mysqld_safe --init-file=/tmp/set_mysql_root_pwd &
  rm /tmp/set_mysql_root_pwd
  mysql -uroot -pMyNewPass -e "drop database nova; drop database cinder; drop database keystone; drop database glance;"
  
  umount /srv/node/device* ;
  vgremove -f cinder-volumes ;
  losetup -a | sed -e 's/:.*//g' | xargs losetup -d ;
  find /etc/pki/tls -name "ssl_ps*" | xargs rm -rf ;
  for x in $(df | grep "/lib/" | sed -e 's/.* //g') ; do
      umount $x ;
  done