From: Darshaka Pathirana <dpat@syn-net.org>
Date: Sat, 19 Nov 2016 00:51:54 +0000 (+0100)
Subject: Enable and disable services by using systemd.presets
X-Git-Tag: v0.28.0~11
X-Git-Url: https://git.grml.org/?p=grml-live.git;a=commitdiff_plain;h=6e61fc1fc4b79cc4506783c03e441a3686d287d2;hp=5b0d1600825c2fe273b47adaf6278cba3c241f5c

Enable and disable services by using systemd.presets

By using systemd.presets we can implement our own policy
which services needs to be enabled or disabled on boot-time.

This issue was initially triggered by a problem with the
wpa_supplicant@*.service which failed on boot with an
"Dependency failed for WPA supplicant daemon
(interface-specific version)" error.

See: http://paste.grml.org/2862/
---

diff --git a/etc/grml/fai/config/scripts/GRMLBASE/15-initsetup b/etc/grml/fai/config/scripts/GRMLBASE/15-initsetup
index f94cd3f..ba29908 100755
--- a/etc/grml/fai/config/scripts/GRMLBASE/15-initsetup
+++ b/etc/grml/fai/config/scripts/GRMLBASE/15-initsetup
@@ -16,14 +16,6 @@ systemd_setup() {
   echo "Enabling user '$USERNAME' for autologin"
   sed -i "s/\$USERNAME/$USERNAME/" "$target"/etc/systemd/system/getty@tty*.service.d/override.conf
 
-  # enable TTY logins
-  local service
-  for file in "${target}"/etc/systemd/system/getty@tty*.service.d ; do
-    service=$(basename "$file" .d)
-    $ROOTCMD systemctl enable "$service" || echo "failed to enable $service"
-  done
-  unset service
-
   # FIXME - ssh-keygen isn't executed yet before ssh-bootoption + ssh services
   $ROOTCMD systemctl enable ssh-bootoption.service || echo "failed to enable ssh-bootoption.service"
   $ROOTCMD systemctl enable ssh-keygen.service     || echo "failed to enable ssh-keygen.service"
@@ -32,25 +24,6 @@ systemd_setup() {
   # "Failed to unmount transient /etc/machine-id file in our private namespace: Invalid argument"
   $ROOTCMD systemctl mask systemd-machine-id-commit.service || echo "failed to mask $systemd-machine-id-commit.service"
 
-  # disable unwanted services
-  local service
-  for service in \
-    cron.service \
-    lvm2-lvmetad.service \
-    lvm2-lvmetad.socket \
-    lvm2-lvmpolld.socket \
-    lvm2-monitor.service \
-    mdadm-raid.service \
-    smartd.service \
-    ssh.service \
-    swap.target \
-    systemd-timesyncd.service \
-    uuidd.service
-  do
-    $ROOTCMD systemctl disable ${service} || echo "failed to disable $service"
-  done
-  unset service
-
   # TODO ->
 
   # * *proper* integration for grml-autoconfig