upgrade venvs on compute

osa-ubuntu-post-distro-upgrade.sh

#!/usr/bin/env bash

# When upgrading from 16.04 to 18.04 a lot of new packages get installed and a lot of old packages get removed.
# The upgrade process can break things we rely on within the virtual environments we run openstack services within. 
# This script will correct issues in the venvs by fixing broken symlinks to system libraries we require.

for venv in $(find /openstack/venvs/* -maxdepth 0 -type d); do
  # Update the venvs in place with the new system python
  virtualenv --no-wheel --no-pip --no-setuptools --always-copy --python=/usr/bin/python "${venv}"

  # Correct SSL links
  ln -sf /usr/lib/python2.7/lib-dynload/_ssl.x86_64-linux-gnu.so "${venv}/local/lib/python2.7/lib-dynload/_ssl.x86_64-linux-gnu.so"
  ln -sf /usr/lib/python2.7/lib-dynload/_ssl.x86_64-linux-gnu.so "${venv}/lib/python2.7/lib-dynload/_ssl.x86_64-linux-gnu.so"

  # Find broken links
  for broken_link in $(find "${venv}" -type l ! -exec test -e {} \; -print); do
    LOCAL_LIB=$(find /usr -name "$(basename -s .so ${broken_link}).x86_64-linux-gnu.so" -print -quit)
    if [[ -z "${LOCAL_LIB}" ]]; then
      echo "a broken link has been found within a venv and can not be automatically fixed"
      echo "BROKEN LINK: ${broken_link}"
    else
      ln -sf "${LOCAL_LIB}" "${broken_link}"
    fi
  done
done

When you change the line 22 this script works very well else it would overwrite the files in /usr with a symbolic link to a broken symbolic link in the venv.

ln -sf "${LOCAL_LIB}" "${broken_link}"

When you change the line 22 this script works very well else it would overwrite the files in /usr with a symbolic link to a broken symbolic link in the venv.

ln -sf "${LOCAL_LIB}" "${broken_link}"

👍 fixed