# Stretch to Buster Upgrade

Notes so far:

• Upgrade needsrestart first and set NEEDRESTART_SUSPEND=1 to avoid be prompted to restart services (they will all be restarted on reboot)
• `dpkg: error processing archive /var/cache/apt/archives/needrestart_3.4-5_all.deb (--unpack): unable to create '/etc/apt/disabled.apt.conf.d/99needrestart.dpkg-new' (while processing './etc/apt/apt.conf.d/99needrestart'): No such file or directory. I think I got this message because I set the environment variable NEEDRESTART_SUSPEND=1`.

  mkdir -p /etc/apt/disabled.apt.conf.d/
  

• php 7.1 and 7.2 packages seem to be removed on upgrade, we want to keep them
• doveconf: Warning: Obsolete setting in /etc/dovecot/conf.d/99-mfpl.conf:27: ssl_protocols has been replaced by ssl_min_protocol (fixed via puppet)
• doveconf: Fatal: Error in configuration file /etc/dovecot/conf.d/10-ssl.conf line 13: ssl_key: Can't open file /etc/dovecot/private/dovecot.key: No such file or directory (see ​debian bug - fix with ln -s /etc/dovecot/private/dovecot.pem /etc/dovecot/private/dovecot.key

Prompted config files

• /etc/logrotate.d/apache2
• /etc/systemd/journald.conf
• /etc/systemd/timesyncd.conf