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From d3889c4645a1319c3d677006164b618ee53f4c8b Mon Sep 17 00:00:00 2001
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From: Eduardo Otubo <otubo@redhat.com>
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Date: Mon, 7 Dec 2020 14:23:22 +0100
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Subject: [PATCH 3/4] Fix unit failure of cloud-final.service if NetworkManager
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was not present.
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RH-Author: Eduardo Terrell Ferrari Otubo (eterrell)
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RH-MergeRequest: 27: Fix unit failure of cloud-final.service if NetworkManager was not present.
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RH-Commit: [1/1] 3c65a2cca140fff48df1ef32919e3cb035506a2b (eterrell/cloud-init)
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RH-Bugzilla: 1898943
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cloud-final.service would fail if NetworkManager was not installed.
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journal -u cloud-final.service would show:
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cloud-init[5328]: Cloud-init v. 19.4 finished at ...
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echo[5346]: try restart NetworkManager.service
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systemctl[5349]: Failed to reload-or-try-restart
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NetworkManager.service: Unit not found.
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systemd[1]: cloud-final.service: control process exited,
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code=exited status=5
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systemd[1]: Failed to start Execute cloud user/final scripts.
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systemd[1]: Unit cloud-final.service entered failed state.
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systemd[1]: cloud-final.service failed.
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The change here is to only attempt to restart NetworkManager if it is
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present, and its SubState is 'running'.
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The multi-line shell in a systemd unit is less than ideal, but I'm not
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aware of any other way of conditionally doing this.
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Note that both of 'try-reload-or-restart' and 'reload-or-try-restart'
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will fail if the service is not present. So this would also affect rhel
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8 systems that do not use NetworkManager.
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Signed-off-by: Eduardo Otubo <otubo@redhat.com>
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---
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rhel/systemd/cloud-final.service | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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diff --git a/rhel/systemd/cloud-final.service b/rhel/systemd/cloud-final.service
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index 05add077..e281c0cf 100644
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--- a/rhel/systemd/cloud-final.service
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+++ b/rhel/systemd/cloud-final.service
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@@ -11,8 +11,11 @@ ExecStart=/usr/bin/cloud-init modules --mode=final
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RemainAfterExit=yes
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TimeoutSec=0
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KillMode=process
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-ExecStartPost=/bin/echo "trying to reload or restart NetworkManager.service"
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-ExecStartPost=/usr/bin/systemctl try-reload-or-restart NetworkManager.service
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+# Restart NetworkManager if it is present and running.
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+ExecStartPost=/bin/sh -c 'u=NetworkManager.service; \
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+ out=$(systemctl show --property=SubState $u) || exit; \
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+ [ "$out" = "SubState=running" ] || exit 0; \
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+ systemctl reload-or-try-restart $u'
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# Output needs to appear in instance console output
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StandardOutput=journal+console
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--
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2.18.4
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