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iaas-setup.sh: support default user not existing

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For CNaaS machines we supply cloud-init user-data that does not create a
default user, in this case the script would exit half-way through. Now
it only tries to remove a user if it exists in the first place.
This commit is contained in:
Patrik Lundin 2023-01-25 21:52:20 +01:00
parent 714506da1e
commit f1ab4506f1
Signed by: patlu
GPG key ID: A0A812BA2249F294
1 changed files with 32 additions and 26 deletions
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58
iaas-setup.sh
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@ -26,39 +26,45 @@ fi
# ===
export LC_CTYPE=C.UTF-8
# Make sure there is no systemd process running as the initial cloud image user
# # after the "enable root" step in prepare-iaas-$os. If there are any #
# proceses still running as the specified user the "userdel" command # below
# will fail.
#
# Depending on how long we have waited between running the "enable root"
# script and this one it is possible the process has timed out on its own,
# so run this command before doing "set -e" in case there is no process
# to match.
pkill -u "$os" -xf "/lib/systemd/systemd --user"
# Remove default user if present
if id "$os"; then
# Make sure there is no systemd process running as the initial cloud image user
# after the "enable root" step in prepare-iaas-$os. If there are any
# proceses still running as the specified user the "userdel" command
# below will fail.
#
# Depending on how long we have waited between running the "enable root"
# script and this one it is possible the process has timed out on its own,
# so run this command before doing "set -e" in case there is no process
# to match.
pkill -u "$os" -xf "/lib/systemd/systemd --user"
# Make sure the process has gone away before continuing
sleep_seconds=1
attempt=1
max_attempts=10
while pgrep -u "$os" -xf "/lib/systemd/systemd --user"; do
if [ $attempt -gt $max_attempts ]; then
echo "failed waiting for systemd process to exit, please investigate"
# Make sure the process has gone away before continuing
sleep_seconds=1
attempt=1
max_attempts=10
while pgrep -u "$os" -xf "/lib/systemd/systemd --user"; do
if [ $attempt -gt $max_attempts ]; then
echo "failed waiting for systemd process to exit, please investigate"
exit 1
fi
echo "systemd process still running as '$os' user, this is attempt $attempt out of $max_attempts, sleeping for $sleep_seconds seconds..."
sleep $sleep_seconds
attempt=$((attempt + 1))
done
# While the man page for "userdel" recommends using "deluser" we can not
# run "deluser" with "--remove-home" without installing more than the
# already included `perl-base` package on debian, so stick with the low
# level utility.
if ! userdel --remove "$os"; then
exit 1
fi
echo "systemd process still running as '$os' user, this is attempt $attempt out of $max_attempts, sleeping for $sleep_seconds seconds..."
sleep $sleep_seconds
attempt=$((attempt + 1))
done
fi
# From this point we expect all commands to succeed
set -e
# While the man page for "userdel" recommends using "deluser" we can not
# run "deluser" with "--remove-home" without installing more than the
# already included `perl-base` package on debian, so stick with the low
# level utility.
userdel --remove "$os"
rm /etc/sudoers.d/*
# Make sure en_US.UTF-8 is present in the system, expected by at least