[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
I'm sorry if this comment isn't helpful but I'm only seeing this on a
new noble installation but never on another installation which was
upgraded from mantic some time but early on during the noble development
period.
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Warning: The unit file, source configuration file or drop-ins of {apt-
news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
It looks like the global need-reload state that Christian investigated
that is being set by a snapd operation was added recently in systemd.
https://github.com/systemd/systemd/commit/a82b8b3dc80619c3275ad8180069289b411206d0
That is likely why we're only seeing this issue in noble.
From reading the commit message there, it sounds like the right thing to
do is for snapd to issue a daemon-reload after it sets up all its units.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Happened to me after clearing out games,then apt purge hexchat.
my cli error is:
sudo apt update
[sudo] password for xx:
Sorry, try again.
[sudo] password for xx:
Warning: The unit file, source configuration file or drop-ins of
apt-news.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Warning: The unit file, source configuration file or drop-ins of
esm-cache.service changed on disk. Run 'systemctl daemon-reload' to reload
units.
Hit:1 http://security.ubuntu.com/ubuntu noble-security InRelease
Hit:2 http://ca.archive.ubuntu.com/ubuntu noble InRelease
Get:3 http://ca.archive.ubuntu.com/ubuntu noble-updates InRelease [89.7 kB]
Hit:4 http://ca.archive.ubuntu.com/ubuntu noble-backports InRelease
Fetched 89.7 kB in 1s (113 kB/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Hello. I'm also running into this problem:
sudo apt update && sudo apt upgrade
Warning: The unit file, source configuration file or drop-ins of
apt-news.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Warning: The unit file, source configuration file or drop-ins of
esm-cache.service changed on disk. Run 'systemctl daemon-reload' to reload
units.
Hit:1 http://us.archive.ubuntu.com/ubuntu noble InRelease
Hit:2 http://us.archive.ubuntu.com/ubuntu noble-updates InRelease
Hit:3 http://security.ubuntu.com/ubuntu noble-security InRelease
Hit:4 http://us.archive.ubuntu.com/ubuntu noble-backports InRelease
Hit:5 https://linux.teamviewer.com/deb stable InRelease
Hit:6 https://esm.ubuntu.com/apps/ubuntu noble-apps-security InRelease
Hit:7 https://esm.ubuntu.com/infra/ubuntu noble-infra-security InRelease
Ign:8 https://repository.mullvad.net/deb/stable noble InRelease
Hit:9 https://ppa.launchpadcontent.net/unit193/encryption/ubuntu noble InRelease
Err:10 https://repository.mullvad.net/deb/stable noble Release
404 Not Found [IP: 45.149.104.1 443]
Reading package lists... Done
W:
https://ppa.launchpadcontent.net/unit193/encryption/ubuntu/dists/noble/InRelease:
Signature by key 3BFB8E06536B8753AC58A4A303647209B58A653A uses weak algorithm
(rsa1024)
E: The repository 'https://repository.mullvad.net/deb/stable noble Release'
does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore
disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration
details.
I have no idea what it even means. Any suggestions? Should I even be concerned
about this?
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
TL;DR:
As many I've gone deeper, but none of the times in `stat` nor the
checksums of /usr/lib/systemd/system/hello.service did change.
Turns out this wasn't even about their file states.
And additionally my understanding was wrong, and potentially yours as well.
The state if this is outdated is not only per service via `struct
UnitStatusInfo`,
but also globally across all services via `struct Manager`.
Snapd's way to enable its mount unit sets that global state and
therefore either needs to change how it enables units or run
a daemon-reload afterwards just like most .deb package installs do.
Details:
First we need to be careful, there are two ambiguous paths here that
can trigger the same message:
a) on service start
start_unit_one
-> if (need_daemon_reload(bus, name) > 0)
-> warn_unit_file_changed(name);
This is a function:
int need_daemon_reload(sd_bus *bus, const char *unit)
It will call out via dbus asking for the attribute NeedDaemonReload
b) on service status
print_status_info
-> if (i->need_daemon_reload)
-> warn_unit_file_changed(i->id);
Also for storage, there are two:
c) `struct Manager` containing `unit_file_state_outdated` which is a global
state for all units in that manager
d) Each `struct UnitStatusInfo` has a field `need_daemon_reload` (yes just
named like the function above) that can flag this per unit.
And (a) isn't even per service.
The value of that can be fetched per service via dbus like:
$ dbus-send --system --print-reply --dest="org.freedesktop.systemd1"
"/org/freedesktop/systemd1/unit/hello_2eservice"
"org.freedesktop.DBus.Properties.Get" "string:org.freedesktop.systemd1.Unit"
"string:NeedDaemonReload"
method return time=1713787033.411485 sender=:1.3 -> destination=:1.19
serial=3833 reply_serial=2
variant boolean false
And the same can be fetched via `systemctl show` as well:
root@test:~# systemctl show hello | grep '^NeedDaemonReload'
NeedDaemonReload=yes
With the above in mind we can see that installing snapd renders ALL of them
as outdated. It was spotted with pro, reproduced with a simple example
and if you check the system it is all of them.
root@test:~# for u in $(systemctl list-units --output json | jq '.[].unit' | tr
-d '"'); do systemctl show $u | grep '^NeedDaemonReload'; done 2>/dev/null |
uniq -c
143 NeedDaemonReload=no
root@test:~# snap install snapd
2024-04-22T12:44:50Z INFO Waiting for automatic snapd restart...
snapd 2.62 from Canonical✓ installed
root@test:~# for u in $(systemctl list-units --output json | jq '.[].unit' | tr
-d '"'); do systemctl show $u | grep '^NeedDaemonReload'; done 2>/dev/null |
uniq -c
144 NeedDaemonReload=yes
Still the question is, which of the two data points is it switching?
It could be the global setting, but as well iterating and setting it per
service.
I found that the global state could get changed in src/core/dbus-manager.c
in very similarly named methods:
- method_add_dependency_unit_files
- method_preset_all_unit_files
- method_revert_unit_files
- method_disable_unit_files_generic
- method_preset_unit_files_with_mode
- method_enable_unit_files_generic
All of them do eventually the same:
m->unit_file_state_outdated = m->unit_file_state_outdated || n_changes > 0;
So it keeps the state or has n_changes applied and then sets it to true.
With GDB I found it happening in `method_enable_unit_files_generic`
of "snap-snapd-21465.mount":
2523r = call(m->runtime_scope, flags, NULL, l, ,
_changes);
2524m->unit_file_state_outdated = m->unit_file_state_outdated ||
n_changes > 0; /* See comments for this variable in manager.h */
(gdb) p m->unit_file_state_outdated
$1 = false
(gdb) n
2525if (r < 0)
(gdb) p m->unit_file_state_outdated
$2 = true
(gdb) p n_changes
$3 = 2
(gdb) p *l
$4 = 0x562ccfe389a0 "snap-snapd-21465.mount"
That "call" reference is in this case:
$1 = {int (RuntimeScope, UnitFileFlags, const char *, char **,
InstallChange **, size_t *)}
0x7e2b6d34dd00
So the way snapd enabled its unit sets the global "out of date" state
for all things. I'm not challenging that, but like package postinst
it means snapd should run the implied daemon-reload to get back to
a stable state- WDYT?
I had a hard time tracking that down, to enter gdb in a somewhat helpful
state you might want to start with these saved breakpoints
root@test:~# cat sd.brk
break ../src/core/dbus-manager.c:2524
commands
printf "Path %s nchanges %ld\n", *l, n_changes
cont
end
break ../src/core/dbus-manager.c:2597
commands
printf "Path %s nchanges %ld\n", *l, n_changes
cont
end
break ../src/core/dbus-manager.c:2651
commands
printf "Path %s nchanges %ld\n", *l, n_changes
cont
end
break ../src/core/dbus-manager.c:2694
commands
printf "Path %s nchanges %ld\n", *l, n_changes
cont
end
break ../src/core/dbus-manager.c:2767
commands
printf "Path %s nchanges %ld\n", *l, n_changes
[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Same thing on 24.04 and rebooting doesn't fix it.
Seems those unit files belongs to: ubuntu-pro-client
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Warning: The unit file, source configuration file or drop-ins of {apt-
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
I am seeing this message on Ubuntu 24.04 Beta x64. I did an apt update
and apt upgrade yesterday without any issues, and got this message out
of the blue today.
Sorry, I might not have been able to follow this entire discussion, but
if you need any logs/info from me and can guide me on providing them,
I'll happily oblige.
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Warning: The unit file, source configuration file or drop-ins of {apt-
news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
to reload units.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Today I saw the warning on an riscv64 Ubuntu 24.04 system booted from
https://cdimage.ubuntu.com/ubuntu-server/daily-
preinstalled/pending/noble-preinstalled-server-riscv64+icicle.img.xz
after executing apt-get update.
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Warning: The unit file, source configuration file or drop-ins of {apt-
news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Yes, I think we may be enumerating a directory / statting files. I don't
believe we open anything unless we want to have a look but I _could_ be
wrong and I'm still investigating things (with interruptions to attend
calls).
I don't believe it is related to ubuntu-pro-client, the only reason it
is in the report is that "apt update" hook calls into systemctl so the
warning is printed there.
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Warning: The unit file, source configuration file or drop-ins of {apt-
news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
to reload units.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Thanks for all the investigation and discussion!
Just to close out the ubuntu-pro-client related questions:
ubuntu-pro-client does run daemon-reload in postinst.
and here is a reproducer that doesn't involve ubuntu-pro-client services
```
lxc launch ubuntu-daily:noble test
lxc shell test
# now in the noble container
cat > /usr/lib/systemd/system/hello.service << EOF
[Unit]
Description=Hello
[Service]
Type=oneshot
ExecStart=echo hello
EOF
systemctl start hello
systemctl status hello
snap install snapd
systemctl start hello # this will show the warning
systemctl cat hello.service # no noticeable change
```
So I'll mark this invalid for u-a-t.
This also demonstrates that a totally new systemd service is affected.
Does snapd iterate over all systemd units to check something? Then maybe
it is accidentally updating mtime even though it doesn't change
contents?
** Changed in: ubuntu-advantage-tools (Ubuntu)
Status: Incomplete => Invalid
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Both before and after daemon-reload the units have the same definition:
$ systemctl cat apt-news.service esm-cache.service
# /usr/lib/systemd/system/apt-news.service
# APT News is hosted at https://motd.ubuntu.com/aptnews.json and can include
# timely information related to apt updates available to your system.
# This service runs in the background during an `apt update` to download the
# latest news and set it to appear in the output of the next `apt upgrade`.
# The script won't do anything if you've run: `pro config set apt_news=false`.
# The script will limit network requests to at most once per 24 hours.
# You can also host your own aptnews.json and configure your system to use it
# with the command:
# `pro config set apt_news_url=https://yourhostname/path/to/aptnews.json`
[Unit]
Description=Update APT News
[Service]
Type=oneshot
ExecStart=/usr/bin/python3 /usr/lib/ubuntu-advantage/apt_news.py
AppArmorProfile=ubuntu_pro_apt_news
CapabilityBoundingSet=~CAP_SYS_ADMIN
CapabilityBoundingSet=~CAP_NET_ADMIN
CapabilityBoundingSet=~CAP_NET_BIND_SERVICE
CapabilityBoundingSet=~CAP_SYS_PTRACE
CapabilityBoundingSet=~CAP_NET_RAW
PrivateTmp=true
RestrictAddressFamilies=~AF_NETLINK
RestrictAddressFamilies=~AF_PACKET
# These may break some tests, and should be enabled carefully
#NoNewPrivileges=true
#PrivateDevices=true
#ProtectControlGroups=true
# ProtectHome=true seems to reliably break the GH integration test with a lunar
lxd on jammy host
#ProtectHome=true
#ProtectKernelModules=true
#ProtectKernelTunables=true
#ProtectSystem=full
#RestrictSUIDSGID=true
# Unsupported in bionic
# Suggestion from systemd.exec(5) manpage on SystemCallFilter
#SystemCallFilter=@system-service
#SystemCallFilter=~@mount
#SystemCallErrorNumber=EPERM
#ProtectClock=true
#ProtectKernelLogs=true
# /usr/lib/systemd/system/esm-cache.service
# The ESM apt cache will maintain information about what ESM updates are
# available to a system. This information will be presented to users in the apt
# output, or when running pro security-status. These caches are maintained
# entirely outside the system apt configuration to avoid interference with user
# definitions. This service updates those caches. This will only have effect
# on releases where ESM is applicable, starting from Xenial: esm-apps for
# every LTS, and esm-infra for systems in expanded support period after the LTS
# expires.
[Unit]
Description=Update the local ESM caches
[Service]
Type=oneshot
ExecStart=/usr/bin/python3 /usr/lib/ubuntu-advantage/esm_cache.py
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
With a closer look I ended up running this loop while looking at systemd
debug logs:
sudo snap remove --purge snapd && sudo systemctl daemon-reload && sudo
systemctl restart snapd && snap version && sudo apt update && echo
"ALOHA: installing snapd" | systemd-cat && sudo snap install snapd &&
echo "ALOHA: done installing snapd" | systemd-cat
This causes the following log file to show up:
mar 13 13:02:52 ciri systemd[1]: Looking for unit files in (higher priority
first):
mar 13 13:02:52 ciri systemd[1]: /etc/systemd/system.control
mar 13 13:02:52 ciri systemd[1]: /run/systemd/system.control
mar 13 13:02:52 ciri systemd[1]: /run/systemd/transient
mar 13 13:02:52 ciri systemd[1]: /run/systemd/generator.early
mar 13 13:02:52 ciri systemd[1]: /etc/systemd/system
mar 13 13:02:52 ciri systemd[1]: /etc/systemd/system.attached
mar 13 13:02:52 ciri systemd[1]: /run/systemd/system
mar 13 13:02:52 ciri systemd[1]: /run/systemd/system.attached
mar 13 13:02:52 ciri systemd[1]: /run/systemd/generator
mar 13 13:02:52 ciri systemd[1]: /usr/local/lib/systemd/system
mar 13 13:02:52 ciri systemd[1]: /usr/lib/systemd/system
mar 13 13:02:52 ciri systemd[1]: /run/systemd/generator.late
mar 13 13:02:52 ciri systemd[1]: Modification times have changed, need to
update cache.
The message at the bottom of the log comes from systemd's
src/basic/unit-file.c
bool lookup_paths_timestamp_hash_same(const LookupPaths *lp, uint64_t
timestamp_hash, uint64_t *ret_new) {
struct siphash state;
siphash24_init(, HASH_KEY.bytes);
STRV_FOREACH(dir, lp->search_path) {
struct stat st;
if (lookup_paths_mtime_exclude(lp, *dir))
continue;
/* Determine the latest lookup path modification time */
if (stat(*dir, ) < 0) {
if (errno == ENOENT)
continue;
log_debug_errno(errno, "Failed to stat %s, ignoring:
%m", *dir);
continue;
}
siphash24_compress_usec_t(timespec_load(_mtim), );
}
uint64_t updated = siphash24_finalize();
if (ret_new)
*ret_new = updated;
if (updated != timestamp_hash)
log_debug("Modification times have changed, need to update
cache.");
return updated == timestamp_hash;
}
Modification of mtime of any of the directories above is sufficient to
cause this to differ.
I've patched systemd to tell us why systemd thinks it needs to be
reloaded (additional printfs) to get an idea what might be the trigger
that is left stale.
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Warning: The unit file, source configuration file or drop-ins of {apt-
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
> It's not the apt-news nor esm-cache service that was modified.
> It looks like systemd warns about daemon-reload in any cases if any of the
> systemd unit files are
> modified and daemon-reload wasn't called after that.
I understand, but in comment #14 the warning is very specific about the
unit files that changed: apt-news.service and esm-cache.service
Could it be that something else installed an override config for those
units elsewhere (/run, or /etc), and then didn't issue the daemon-
reload?
Could we get an "systemctl cat apt-news.service esm-cache.service"
output after this warning? It will say which files exactly are being
considered, if it's just /lib/systemd/system/{apt-news,esm-
cache}.service or other config snippets.
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Warning: The unit file, source configuration file or drop-ins of {apt-
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
It's not the apt-news nor esm-cache service that was modified.
It looks like systemd warns about daemon-reload in any cases if any of the
systemd unit files are modified and daemon-reload wasn't called after that.
https://bugs.launchpad.net/ubuntu/+source/ubuntu-advantage-tools/+bug/2055239/comments/12
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Warning: The unit file, source configuration file or drop-ins of {apt-
news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Check the postinst script of the binary packages produced by src:ubuntu-
advantage-tools. The binary packages that install systemd units must
call daemon-reload at some point after the new unit file was installed.
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Title:
Warning: The unit file, source configuration file or drop-ins of {apt-
news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
to reload units.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Removing ubuntu-pro-client silences this, so that installation of snapd
snap no longer causes any side-effects. While I can see that
installation of snapd has some impact on ubuntu-pro-client, I cannot yet
understand how.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Snapd touches neither apt-news.service nor esm-cache.service.
On my system the only mention of esm-cache.service is in
uaclient/actions.py:
zyga@ciri:/$ grep -FR esm-cache.service usr/ 2>/dev/null
usr/lib/python3/dist-packages/uaclient/actions.py:"esm-cache.service",
I've increased systemd logging to debug to see what is replacing the
service but I cannot find any evidence of that in the logs.
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Warning: The unit file, source configuration file or drop-ins of {apt-
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
I've reproduced this and collected forkstat logs from installation of
snapd snap on an otherwise pristine "noble" system. I think what is
going on is that systemd stays in a mode where it knows that units on
disk have changed vs units in memory and will print the warning until
re-loaded. The fact that apt hooks fiddle with systemd units is
sufficient for printing the warning:
apt update causes this thing to execute:
10:37:56 exec 3523 sh -c -- [ ! -e
/run/systemd/system ] || [ $(id -u) -ne 0 ] || systemctl start --no-
block apt-news.service esm-cache.service || true
This is enough for the warning.
The remaining question is where in the installation of snapd do we
modify units after last daemon-reload. I'm focusing on that aspect now.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
** Changed in: snapd
Assignee: (unassigned) => Zygmunt Krynicki (zyga)
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
I get the same warnings after editing 3 files /etc/apt/sources.list.d/
Warning: The unit file, source configuration file or drop-ins of
apt-news.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Warning: The unit file, source configuration file or drop-ins of
esm-cache.service changed on disk. Run 'systemctl daemon-reload' to reload
units.
OK:1 http://security.ubuntu.com/ubuntu noble-security InRelease
Holen:2 https://cli.github.com/packages stable InRelease [3.917 B]
OK:3 https://dl.google.com/linux/chrome/deb stable InRelease
OK:4 https://dl.winehq.org/wine-builds/ubuntu jammy InRelease
OK:5 http://archive.ubuntu.com/ubuntu noble InRelease
OK:6 https://ppa.launchpadcontent.net/oibaf/graphics-drivers/ubuntu noble
InRelease
OK:7 https://download.vscodium.com/debs vscodium InRelease
OK:8 https://repo.steampowered.com/steam stable InRelease
Holen:9 https://ppa.launchpadcontent.net/savoury1/gimp/ubuntu jammy InRelease
[18,1 kB]
OK:10 http://archive.ubuntu.com/ubuntu noble-updates InRelease
OK:11 http://archive.ubuntu.com/ubuntu noble-backports InRelease
OK:12 https://esm.ubuntu.com/apps/ubuntu noble-apps-security InRelease
OK:13 https://esm.ubuntu.com/apps/ubuntu noble-apps-updates InRelease
OK:14 https://esm.ubuntu.com/infra/ubuntu noble-infra-security InRelease
OK:15 https://esm.ubuntu.com/infra/ubuntu noble-infra-updates InRelease
Holen:16 https://ppa.launchpadcontent.net/savoury1/gimp/ubuntu jammy/main amd64
Packages [26,6 kB]
Holen:17 https://ppa.launchpadcontent.net/savoury1/gimp/ubuntu jammy/main i386
Packages [14,9 kB]
Holen:18 https://ppa.launchpadcontent.net/savoury1/gimp/ubuntu jammy/main
Translation-en [14,4 kB]
Es wurden 77,8 kB in 2 s geholt (38,7 kB/s).
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Seeing this myself:
| $ sudo apt-get update
| Warning: The unit file, source configuration file or drop-ins of
apt-news.service changed on disk. Run 'systemctl daemon-reload' to reload units.
| Warning: The unit file, source configuration file or drop-ins of
esm-cache.service changed on disk. Run 'systemctl daemon-reload' to reload
units.
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Warning: The unit file, source configuration file or drop-ins of {apt-
news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
to reload units.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Thank you nobuto! With that I was able to reproduce the issue.
lxc launch ubuntu-daily:noble test
lxc exec test -- apt update # this one works as expected
lxc exec test -- snap install snapd
lxc exec test -- apt update # this one has the warnings in the bug report
assigning this bug to snapd
** Also affects: snapd
Importance: Undecided
Status: New
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Hmm, it happened again between those two `apt update`. It might be snapd
related.
2024-03-05T10:49:54.513356+09:00 t14 sudo: nobuto : TTY=pts/0 ;
PWD=/home/nobuto ; USER=root ; COMMAND=/usr/bin/apt update
2024-03-05T11:00:47.422897+09:00 t14 sudo: nobuto : TTY=pts/0 ;
PWD=/home/nobuto ; USER=root ; COMMAND=/usr/bin/apt update
$ uptime
11:01:51 up 14 min, 1 user, load average: 0.91, 0.90, 0.75
$ find /etc/systemd /lib/systemd -mmin -15
/etc/systemd/system
/etc/systemd/system/snap-go-10535.mount
/etc/systemd/system/multi-user.target.wants
/etc/systemd/system/multi-user.target.wants/snap-go-10535.mount
/etc/systemd/system/snapd.mounts.target.wants
/etc/systemd/system/snapd.mounts.target.wants/snap-go-10535.mount
$ snap refresh --time
timer: 00:00~24:00/4
last: today at 10:53 JST
next: today at 17:07 JST
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
The list of files modified in the last two hours (if I increase the
range to the last 2 days, it lists almost everything).
$ find /etc/systemd /lib/systemd/ -mmin -7200
/etc/systemd/system
/etc/systemd/system/snap-chromium-2768.mount
/etc/systemd/system/snap-hugo-18726.mount
/etc/systemd/system/snap-juju-26548.mount
/etc/systemd/system/sshd-keygen@.service.d
/etc/systemd/system/snap-zoom\x2dclient-225.mount
/etc/systemd/system/snap-hugo-18753.mount
/etc/systemd/system/snap-juju-25751.mount
/etc/systemd/system/graphical.target.wants
/etc/systemd/system/multi-user.target.wants
/etc/systemd/system/multi-user.target.wants/snap-chromium-2768.mount
/etc/systemd/system/multi-user.target.wants/snap-hugo-18726.mount
/etc/systemd/system/multi-user.target.wants/snap-juju-26548.mount
/etc/systemd/system/multi-user.target.wants/snap-zoom\x2dclient-225.mount
/etc/systemd/system/multi-user.target.wants/snap-hugo-18753.mount
/etc/systemd/system/multi-user.target.wants/snap-juju-25751.mount
/etc/systemd/system/multi-user.target.wants/snap-hugo-18706.mount
/etc/systemd/system/snap.juju.fetch-oci.service
/etc/systemd/system/snap-hugo-18706.mount
/etc/systemd/system/snapd.mounts.target.wants
/etc/systemd/system/snapd.mounts.target.wants/snap-chromium-2768.mount
/etc/systemd/system/snapd.mounts.target.wants/snap-hugo-18726.mount
/etc/systemd/system/snapd.mounts.target.wants/snap-juju-26548.mount
/etc/systemd/system/snapd.mounts.target.wants/snap-zoom\x2dclient-225.mount
/etc/systemd/system/snapd.mounts.target.wants/snap-hugo-18753.mount
/etc/systemd/system/snapd.mounts.target.wants/snap-juju-25751.mount
/etc/systemd/system/snapd.mounts.target.wants/snap-hugo-18706.mount
/lib/systemd/system
/lib/systemd/system/tailscaled.service
/lib/systemd/system-generators
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Just for completeness.
$ sudo apt update
Warning: The unit file, source configuration file or drop-ins of
apt-news.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Warning: The unit file, source configuration file or drop-ins of
esm-cache.service changed on disk. Run 'systemctl daemon-reload' to reload
units.
Hit:1 http://ftp.riken.jp/Linux/ubuntu noble InRelease
Hit:2 http://ftp.riken.jp/Linux/ubuntu noble-updates InRelease
Hit:3 http://ftp.riken.jp/Linux/ubuntu noble-backports InRelease
Hit:4 http://ftp.riken.jp/Linux/ubuntu noble-proposed InRelease
Hit:5 https://repo.steampowered.com/steam stable InRelease
Hit:6 https://packages.microsoft.com/repos/code stable InRelease
Hit:7 http://security.ubuntu.com/ubuntu noble-security InRelease
Get:8 https://pkgs.tailscale.com/stable/ubuntu noble InRelease
Fetched 6,563 B in 1s (6,699 B/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
67 packages can be upgraded. Run 'apt list --upgradable' to see them.
$ dpkg --verify ubuntu-advantage-tools; echo $?
0
$ apt policy ubuntu-advantage-tools
ubuntu-advantage-tools:
Installed: 31.1
Candidate: 31.1
Version table:
31.2 100
100 http://ftp.riken.jp/Linux/ubuntu noble-proposed/main amd64 Packages
100 http://ftp.riken.jp/Linux/ubuntu noble-proposed/main i386 Packages
*** 31.1 500
500 http://ftp.riken.jp/Linux/ubuntu noble/main amd64 Packages
500 http://ftp.riken.jp/Linux/ubuntu noble/main i386 Packages
100 /var/lib/dpkg/status
$ systemctl cat apt-news.service
# /usr/lib/systemd/system/apt-news.service
# APT News is hosted at https://motd.ubuntu.com/aptnews.json and can include
# timely information related to apt updates available to your system.
# This service runs in the background during an `apt update` to download the
# latest news and set it to appear in the output of the next `apt upgrade`.
# The script won't do anything if you've run: `pro config set apt_news=false`.
# The script will limit network requests to at most once per 24 hours.
# You can also host your own aptnews.json and configure your system to use it
# with the command:
# `pro config set apt_news_url=https://yourhostname/path/to/aptnews.json`
[Unit]
Description=Update APT News
[Service]
Type=oneshot
ExecStart=/usr/bin/python3 /usr/lib/ubuntu-advantage/apt_news.py
AppArmorProfile=ubuntu_pro_apt_news
CapabilityBoundingSet=~CAP_SYS_ADMIN
CapabilityBoundingSet=~CAP_NET_ADMIN
CapabilityBoundingSet=~CAP_NET_BIND_SERVICE
CapabilityBoundingSet=~CAP_SYS_PTRACE
CapabilityBoundingSet=~CAP_NET_RAW
PrivateTmp=true
RestrictAddressFamilies=~AF_NETLINK
RestrictAddressFamilies=~AF_PACKET
# These may break some tests, and should be enabled carefully
#NoNewPrivileges=true
#PrivateDevices=true
#ProtectControlGroups=true
# ProtectHome=true seems to reliably break the GH integration test with a lunar
lxd on jammy host
#ProtectHome=true
#ProtectKernelModules=true
#ProtectKernelTunables=true
#ProtectSystem=full
#RestrictSUIDSGID=true
# Unsupported in bionic
# Suggestion from systemd.exec(5) manpage on SystemCallFilter
#SystemCallFilter=@system-service
#SystemCallFilter=~@mount
#SystemCallErrorNumber=EPERM
#ProtectClock=true
#ProtectKernelLogs=true
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Warning: The unit file, source configuration file or drop-ins of {apt-
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
> @nobotu - was yours really an empty file or did you not copy more than
one?
Are you referring to the `systemctl cat apt-news.service` in the bug
description? If so, my apologies. I just pasted the file line of the
content on purpose just for confirming the full path of the service. The
flie wasn't empty at all and I didn't touch the file manually at all
either.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
** Description changed:
I recently started seeing the following warning messages when I run `apt
update`.
$ sudo apt update
Warning: The unit file, source configuration file or drop-ins of
apt-news.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Warning: The unit file, source configuration file or drop-ins of
esm-cache.service changed on disk. Run 'systemctl daemon-reload' to reload
units.
...
apt-news.service for example is in /lib/systemd/system/apt-news.service
and it's a static file managed by the package. Does the package
maintenance script call systemd related hooks to reload the config
whenever the package gets updated?
$ systemctl cat apt-news.service
# /usr/lib/systemd/system/apt-news.service
+ # APT News is hosted at https://motd.ubuntu.com/aptnews.json and can include
+ # timely information related to apt updates available to your system.
+ ...
$ dpkg -S /lib/systemd/system/apt-news.service
ubuntu-pro-client: /lib/systemd/system/apt-news.service
- ProblemType: Bug
- DistroRelease: Ubuntu 24.04
+ ProblemType: BugDistroRelease: Ubuntu 24.04
Package: ubuntu-pro-client 31.1
ProcVersionSignature: Ubuntu 6.6.0-14.14-generic 6.6.3
Uname: Linux 6.6.0-14-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.28.0-0ubuntu1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Feb 28 13:06:35 2024
InstallationDate: Installed on 2024-01-08 (51 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Daily amd64 (20240104)
ProcEnviron:
- LANG=en_US.UTF-8
- PATH=(custom, no user)
- SHELL=/bin/bash
- TERM=xterm-256color
- XDG_RUNTIME_DIR=
- SourcePackage: ubuntu-advantage-tools
+ LANG=en_US.UTF-8
+ PATH=(custom, no user)
+ SHELL=/bin/bash
+ TERM=xterm-256color
+ XDG_RUNTIME_DIR=SourcePackage: ubuntu-advantage-tools
UpgradeStatus: No upgrade log present (probably fresh install)
apparmor_logs.txt:
-
+
cloud-id.txt-error:
- Failed running command 'cloud-id' [exit(2)]. Message: REDACTED config part
/etc/cloud/cloud.cfg.d/99-installer.cfg, insufficient permissions
- REDACTED config part /etc/cloud/cloud.cfg.d/90-installer-network.cfg,
insufficient permissions
- REDACTED config part /etc/cloud/cloud.cfg.d/99-installer.cfg, insufficient
permissions
- REDACTED config part /etc/cloud/cloud.cfg.d/90-installer-network.cfg,
insufficient permissions
+ Failed running command 'cloud-id' [exit(2)]. Message: REDACTED config part
/etc/cloud/cloud.cfg.d/99-installer.cfg, insufficient permissions
+ REDACTED config part /etc/cloud/cloud.cfg.d/90-installer-network.cfg,
insufficient permissions
+ REDACTED config part /etc/cloud/cloud.cfg.d/99-installer.cfg, insufficient
permissions
+ REDACTED config part /etc/cloud/cloud.cfg.d/90-installer-network.cfg,
insufficient permissions
livepatch-status.txt-error: Invalid command specified
'/snap/bin/canonical-livepatch status'.
uaclient.conf:
- contract_url: https://contracts.canonical.com
- log_level: debug
+ contract_url: https://contracts.canonical.com
+ log_level: debug
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Warning: The unit file, source configuration file or drop-ins of {apt-
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Whoever hits this please help us to spot the difference that happened as
we still lack a reproducer.
# check if it has been changed
dpkg --verify ubuntu-advantage-tools
# check if there are drop ins that got added
systemctl cat apt-news.service
@nobotu - was yours really an empty file or did you not copy more than one?
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Now I remember one relevant thing that happened in the past 48h: I
rebooted the affected system.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Interestingly this is now happening on my Noble system:
$ sudo apt update
Warning: The unit file, source configuration file or drop-ins of
apt-news.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Warning: The unit file, source configuration file or drop-ins of
esm-cache.service changed on disk. Run 'systemctl daemon-reload' to reload
units.
I'm quite sure I didn't manually touch those units.
I first noticed this yesterday 2024-03-03, where apparently nothing
relevant happened wrt the u-a-t package. I have 31.1 installed, from the
release pocket.
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Title:
Warning: The unit file, source configuration file or drop-ins of {apt-
news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
to reload units.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
I tried to minimize the test case but no luck so far. I will report it
back whenever I find something additional.
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Title:
Warning: The unit file, source configuration file or drop-ins of {apt-
news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
to reload units.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Hello Nobutu. Thanks again for reporting this.
I have been trying to reproduce the error with no success. I tried some
combinations of:
- In lxd container with [jammy, noble]
- [pro downgrade / upgrade targeting 31.1]
- pro enable / disable
- [pro downgrade / upgrade targeting 31.1]
- apt updadate
- apt upgrade
Could you please provide more information about it?
Many thanks.
** Changed in: ubuntu-advantage-tools (Ubuntu)
Status: New => Incomplete
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Title:
Warning: The unit file, source configuration file or drop-ins of {apt-
news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
to reload units.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
It was puzzling indeed, but now I have a reproduction step.
$ sudo apt update
-> no warning
$ sudo apt upgrade
-> to install something to invoke the rsyslog trigger.
Processing triggers for rsyslog (8.2312.0-3ubuntu3) ...
Warning: The unit file, source configuration file or drop-ins of
rsyslog.service changed on disk. Run 'systemctl daemon-reload' to reload units.
$ sudo apt update
-> will see the warning.
The warning happens with every systemctl commands so it's not really
ubuntu-pro-tools specific issue. However, systemctl warnings are not
expected with `apt` commands usually so that's why this could be
considered as a surprise. For fixing this properly, the place may not be
in pro-tools itself but somewhere else.
** Attachment added: "apt-terminal.log"
https://bugs.launchpad.net/ubuntu/+source/ubuntu-advantage-tools/+bug/2055239/+attachment/5750457/+files/apt-terminal.log
** Changed in: ubuntu-advantage-tools (Ubuntu)
Status: Incomplete => New
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Title:
Warning: The unit file, source configuration file or drop-ins of {apt-
news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
to reload units.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Hello, Nobuto,
First of all, thanks for reporting this issue.
We did changes to the apt news service file - we added the apparmor
profiles and systemd security config there - and no, we didn't reload it
by default, which may be causing those warnings.
However, I could not reproduce this behavior. Do you have steps to
reproduce it on a fresh system?
I will bring this to the team.
** Changed in: ubuntu-advantage-tools (Ubuntu)
Status: New => Incomplete
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Title:
Warning: The unit file, source configuration file or drop-ins of {apt-
news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
to reload units.
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[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.
** Tags removed: need-amd64-retrace
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Warning: The unit file, source configuration file or drop-ins of {apt-
news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
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