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summary: Test journal.persistent core config option
details: |
In Ubuntu Core systems journal.persistent core config option can be used to
enable and disable the journal persistence. If persistent journals were previously
enabled by this setting, changing the value to false will delete all saved logs.
This test verifies that when journal.persistent core config is set to true, the
journal logs are written and those are deleted when the config is set to false.
prepare: |
systemctl status snapd > before.txt
restore: |
# disable persistent journal
rm -rf /var/log/journal
systemctl kill --signal=SIGUSR1 systemd-journald
debug: |
"$TESTSTOOLS"/journal-state get-log -u snapd
echo "snapd status before the test:"
cat before.txt || true
echo "snapd status after the test:"
systemctl status snapd || true
execute: |
echo "Wait for first boot to be done"
snap wait system seed.loaded
echo "Precondition check, persistent journal is not available by default"
not test -e /var/log/journal
echo "Check that persistent journal can be enabled"
snap set core journal.persistent=true
test -e /var/log/journal/
test -e /var/log/journal/.snapd-created
# on core16 journald is not reloaded, so changes are not visible until
# rebooted.
if not os.query is-core16; then
# this check relies on *anything* getting logged; enabling persistent
# journal writes an entry about journal size, which should be sufficient.
MACHINE_ID=$(cat /etc/machine-id)
retry -n30 --wait 1 test -e "/var/log/journal/$MACHINE_ID"
fi
echo "Check that persistent journal can be disabled"
snap set core journal.persistent=false
not test -e /var/log/journal
echo "Check that journal log is not removed if managed manually"
mkdir /var/log/journal
snap set core journal.persistent=true
not test -e /var/log/journal/.snapd-created
# NOTE: Since this is failing early, before we do anything to the journal, there is no need to use retry.
snap set core journal.persistent=false 2>&1 | MATCH "the /var/log/journal directory was not created by snapd"
# the journal dir was not removed
test -e /var/log/journal/
not test -e /var/log/journal/.snapd-created
|
