Re: [systemd-devel] How to exclusively toggle between two systemd instances of a single daemon?
On Wed, Oct 08, 2014 at 06:30:51AM -0700, terrygalant.li...@fastest.cc wrote: Hi I have 2 installed instances of a single daemon. 1 is from distro-installed packages, installed into standard default OS locations with unit files in /usr/lib/systemd/system/. The other is installed under /opt, with unit files currently in /opt/mydaemon/systemd/system/, which can be (un)symlinked as needed into /etc/systemd/system/multi-user.target.wants/ to disable or enable. I want to be able to occasionally toggle between use of the 2. Is the right systemd way to do manage this toggle to just name the 2 instances' unit files differently, put a Conflicts= in each for the other, and just use 'enable' for whichever I want active? That would work. You can also make a symlink from /etc/systemd/system/xxx.service to either of the two files and manage it by hand, calling systemctl daemon-reload afterwards. I think this should work. If other systemd units have a Requires= dependency on this daemon, how do I deal with the toggle? Is there a Require=this-instance-OR-that-instance equivalent? No. Zbyszek ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] How to exclusively toggle between two systemd instances of a single daemon?
Hi Zbigniew On Wed, Oct 8, 2014, at 06:39 AM, Zbigniew Jędrzejewski-Szmek wrote: You can also make a symlink from /etc/systemd/system/xxx.service to either of the two files and manage it by hand, calling systemctl daemon-reload afterwards. I think this should work. If other systemd units have a Requires= dependency on this daemon, how do I deal with the toggle? Is there a Require=this-instance-OR-that-instance equivalent? No. I think then this is the right, or only?, way to deal with the toggle AND handle the Requires=. Set the other units' dependency to the **symlink**'s name Requires=xxx.service then manually change the symlink source AND daemon-reload to effect the toggle. Did I understand correctly? TerryG ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] How to exclusively toggle between two systemd instances of a single daemon?
On Wed, Oct 08, 2014 at 06:45:48AM -0700, terrygalant.li...@fastest.cc wrote: Hi Zbigniew On Wed, Oct 8, 2014, at 06:39 AM, Zbigniew Jędrzejewski-Szmek wrote: You can also make a symlink from /etc/systemd/system/xxx.service to either of the two files and manage it by hand, calling systemctl daemon-reload afterwards. I think this should work. If other systemd units have a Requires= dependency on this daemon, how do I deal with the toggle? Is there a Require=this-instance-OR-that-instance equivalent? No. I think then this is the right, or only?, way to deal with the toggle AND handle the Requires=. Set the other units' dependency to the **symlink**'s name The symlink is supposed to have the same name as the symlink target. Requires=xxx.service then manually change the symlink source AND daemon-reload to effect the toggle. Yes. Zbyszek ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] How to exclusively toggle between two systemd instances of a single daemon?
On Wed, Oct 8, 2014 at 4:39 PM, Zbigniew Jędrzejewski-Szmek zbys...@in.waw.pl wrote: On Wed, Oct 08, 2014 at 06:30:51AM -0700, terrygalant.li...@fastest.cc wrote: Hi I have 2 installed instances of a single daemon. 1 is from distro-installed packages, installed into standard default OS locations with unit files in /usr/lib/systemd/system/. The other is installed under /opt, with unit files currently in /opt/mydaemon/systemd/system/, which can be (un)symlinked as needed into /etc/systemd/system/multi-user.target.wants/ to disable or enable. I want to be able to occasionally toggle between use of the 2. Is the right systemd way to do manage this toggle to just name the 2 instances' unit files differently, put a Conflicts= in each for the other, and just use 'enable' for whichever I want active? That would work. You can also make a symlink from /etc/systemd/system/xxx.service to either of the two files and manage it by hand, calling systemctl daemon-reload afterwards. I think this should work. Hmm, isn't this basically the same as adding identical [Install] Alias= entries, and using `systemctl enable -f` to manage them? -- Mantas Mikulėnas graw...@gmail.com ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] How to exclusively toggle between two systemd instances of a single daemon?
On Thu, Oct 09, 2014 at 07:51:32AM +0300, Mantas Mikulėnas wrote: On Wed, Oct 8, 2014 at 4:39 PM, Zbigniew Jędrzejewski-Szmek zbys...@in.waw.pl wrote: On Wed, Oct 08, 2014 at 06:30:51AM -0700, terrygalant.li...@fastest.cc wrote: Hi I have 2 installed instances of a single daemon. 1 is from distro-installed packages, installed into standard default OS locations with unit files in /usr/lib/systemd/system/. The other is installed under /opt, with unit files currently in /opt/mydaemon/systemd/system/, which can be (un)symlinked as needed into /etc/systemd/system/multi-user.target.wants/ to disable or enable. I want to be able to occasionally toggle between use of the 2. Is the right systemd way to do manage this toggle to just name the 2 instances' unit files differently, put a Conflicts= in each for the other, and just use 'enable' for whichever I want active? That would work. You can also make a symlink from /etc/systemd/system/xxx.service to either of the two files and manage it by hand, calling systemctl daemon-reload afterwards. I think this should work. Hmm, isn't this basically the same as adding identical [Install] Alias= entries, and using `systemctl enable -f` to manage them? In some cases yes, but his unit files are outside of the normal search paths, so I don't this would work. Zbyszek ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
