'dnf update' (using the tracer plugin) often tells me to restart certain services via systemctl, which is fine. However on occasion it tells me to restart something manually. I can usually figure out how to do this, but the one I can't figure out is systemd itself:
... You should restart: * These applications manually: systemd # systemctl daemon-reexec # tracer You should restart: * These applications manually: systemd
Sending HUP, TERM etc. to systemd doesn't make any difference.
Is there a way to do this without rebooting?
For extra credit, why is the output of tracer different when running via sudo or su within a GUI, compared with running directly as root logged into a text console? The above commands were run using the latter. When using the former, tracer gave no output.
poc
On Sun, Mar 5, 2017 at 6:15 AM, Patrick O'Callaghan pocallaghan@gmail.com wrote:
'dnf update' (using the tracer plugin) often tells me to restart certain services via systemctl, which is fine. However on occasion it tells me to restart something manually. I can usually figure out how to do this, but the one I can't figure out is systemd itself:
... You should restart:
- These applications manually:
systemd # systemctl daemon-reexec # tracer You should restart:
- These applications manually:
systemd
Sending HUP, TERM etc. to systemd doesn't make any difference.
Is there a way to do this without rebooting?
systemctl daemon-reload or systemctl daemon-reexec
(Is rebooting that big a burden?!)
On Sun, 2017-03-05 at 11:15 +0000, Patrick O'Callaghan wrote:
'dnf update' (using the tracer plugin) often tells me to restart certain services via systemctl, which is fine. However on occasion it tells me to restart something manually. I can usually figure out how to do this, but the one I can't figure out is systemd itself:
... You should restart:
- These applications manually: systemd
# systemctl daemon-reexec # tracer You should restart:
- These applications manually: systemd
Sending HUP, TERM etc. to systemd doesn't make any difference.
Is there a way to do this without rebooting?
From googling restart systemd without rebooting, I saw an example that says do:
systemctl daemon-reexec
I'll leave it to you to test out.
On Sun, 2017-03-05 at 08:32 -0500, Tom H wrote:
On Sun, Mar 5, 2017 at 6:15 AM, Patrick O'Callaghan pocallaghan@gmail.com wrote:
'dnf update' (using the tracer plugin) often tells me to restart certain services via systemctl, which is fine. However on occasion it tells me to restart something manually. I can usually figure out how to do this, but the one I can't figure out is systemd itself:
... You should restart:
- These applications manually:
systemd # systemctl daemon-reexec # tracer You should restart:
- These applications manually:
systemd
Sending HUP, TERM etc. to systemd doesn't make any difference.
Is there a way to do this without rebooting?
systemctl daemon-reload or systemctl daemon-reexec
As I said above, that doesn't work. Or maybe it does work, but tracer doesn't think so and I don't know any other way to tell. Maybe the problem is in tracer (see the second part of my post).
(Is rebooting that big a burden?!)
That would depend on other factors. Restarting systemd shouldn't mean killing any long-running processes.
poc
On Sun, Mar 5, 2017 at 9:44 AM, Patrick O'Callaghan pocallaghan@gmail.com wrote:
On Sun, 2017-03-05 at 08:32 -0500, Tom H wrote:
On Sun, Mar 5, 2017 at 6:15 AM, Patrick O'Callaghan pocallaghan@gmail.com wrote:
'dnf update' (using the tracer plugin) often tells me to restart certain services via systemctl, which is fine. However on occasion it tells me to restart something manually. I can usually figure out how to do this, but the one I can't figure out is systemd itself:
... You should restart:
- These applications manually:
systemd # systemctl daemon-reexec # tracer You should restart:
- These applications manually:
systemd
Sending HUP, TERM etc. to systemd doesn't make any difference.
Is there a way to do this without rebooting?
systemctl daemon-reload or systemctl daemon-reexec
As I said above, that doesn't work.
I'm sorry. I (somehow!) didn't see your "systemctl daemon-reexec". Amazing and embarrassing.
On Sun, 2017-03-05 at 14:17 -0500, Tom H wrote:
On Sun, Mar 5, 2017 at 9:44 AM, Patrick O'Callaghan pocallaghan@gmail.com wrote:
On Sun, 2017-03-05 at 08:32 -0500, Tom H wrote:
On Sun, Mar 5, 2017 at 6:15 AM, Patrick O'Callaghan pocallaghan@gmail.com wrote:
'dnf update' (using the tracer plugin) often tells me to restart certain services via systemctl, which is fine. However on occasion it tells me to restart something manually. I can usually figure out how to do this, but the one I can't figure out is systemd itself:
... You should restart:
- These applications manually:
systemd # systemctl daemon-reexec # tracer You should restart:
- These applications manually:
systemd
Sending HUP, TERM etc. to systemd doesn't make any difference.
Is there a way to do this without rebooting?
systemctl daemon-reload or systemctl daemon-reexec
As I said above, that doesn't work.
I'm sorry. I (somehow!) didn't see your "systemctl daemon-reexec". Amazing and embarrassing.
Errare uHmanum est.
poc
On Sun, Mar 5, 2017 at 4:04 PM, Patrick O'Callaghan pocallaghan@gmail.com wrote:
On Sun, 2017-03-05 at 14:17 -0500, Tom H wrote:
On Sun, Mar 5, 2017 at 9:44 AM, Patrick O'Callaghan pocallaghan@gmail.com wrote:
On Sun, 2017-03-05 at 08:32 -0500, Tom H wrote:
On Sun, Mar 5, 2017 at 6:15 AM, Patrick O'Callaghan pocallaghan@gmail.com wrote:
'dnf update' (using the tracer plugin) often tells me to restart certain services via systemctl, which is fine. However on occasion it tells me to restart something manually. I can usually figure out how to do this, but the one I can't figure out is systemd itself:
... You should restart:
- These applications manually:
systemd # systemctl daemon-reexec # tracer You should restart:
- These applications manually:
systemd
Sending HUP, TERM etc. to systemd doesn't make any difference.
Is there a way to do this without rebooting?
systemctl daemon-reload or systemctl daemon-reexec
As I said above, that doesn't work.
I'm sorry. I (somehow!) didn't see your "systemctl daemon-reexec". Amazing and embarrassing.
Errare uHmanum est.
Indeed :(
I've just run "systemctl daemon-reexec" in a VM and "journalctl" shows "Reexecuting".
I checked "/proc/1/map_files/" and everything'd definitely been remapped.
You should probably file a bug against "tracer".
On Mon, 2017-03-06 at 06:17 -0500, Tom H wrote:
On Sun, Mar 5, 2017 at 4:04 PM, Patrick O'Callaghan pocallaghan@gmail.com wrote:
On Sun, 2017-03-05 at 14:17 -0500, Tom H wrote:
On Sun, Mar 5, 2017 at 9:44 AM, Patrick O'Callaghan pocallaghan@gmail.com wrote:
On Sun, 2017-03-05 at 08:32 -0500, Tom H wrote:
On Sun, Mar 5, 2017 at 6:15 AM, Patrick O'Callaghan pocallaghan@gmail.com wrote:
'dnf update' (using the tracer plugin) often tells me to restart certain services via systemctl, which is fine. However on occasion it tells me to restart something manually. I can usually figure out how to do this, but the one I can't figure out is systemd itself:
... You should restart:
- These applications manually:
systemd # systemctl daemon-reexec # tracer You should restart:
- These applications manually:
systemd
Sending HUP, TERM etc. to systemd doesn't make any difference.
Is there a way to do this without rebooting?
systemctl daemon-reload or systemctl daemon-reexec
As I said above, that doesn't work.
I'm sorry. I (somehow!) didn't see your "systemctl daemon-reexec". Amazing and embarrassing.
Errare uHmanum est.
Indeed :(
I've just run "systemctl daemon-reexec" in a VM and "journalctl" shows "Reexecuting".
I checked "/proc/1/map_files/" and everything'd definitely been remapped.
You should probably file a bug against "tracer".
OK, I'll check that.
poc
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Patrick O'Callaghan -
Tim -
Tom H