On Thu, 6 Apr 2017 11:10:12 +0100 Martin Read <zen75...@zen.co.uk> wrote:
> On 06/04/17 10:58, Joe wrote: > > I understood that an upgrade from Wheezy to Jessie would switch to > > systemd as init. Even if that could be fixed afterwards, then there > > will be server downtime and a manual procedure involved which will > > not be part of the upgrade procedure and therefore will not have > > been tested by the upgrade designers. > > > > Is that not the case? > > *By default*, an upgrade from Wheezy to Jessie will switch to systemd > as init. However, per section 5.6 of the official published release > notes for Debian 8 "jessie", APT pinning can be used to prevent this > changeover: > > https://www.debian.org/releases/jessie/amd64/release-notes/ch-information.en.html#systemd-upgrade-default-init-system > > Quoted here for convenience: > > ==== BEGIN QUOTE ==== > As an example, to prevent systemd-sysv from being installed during > the upgrade, you can create a file called > /etc/apt/preferences.d/local-pin-init with the following contents: > > Package: systemd-sysv > Pin: release o=Debian > Pin-Priority: -1 > ==== END QUOTE ==== > Thanks, I haven't gone through this yet, I've only got one server to do, but it hasn't yet reached the top of the priorities list... -- Joe