Bug#755848: Patch
This patch include a script under finish-install.d/56netcfg-hostname that detect if netcfg/hostname is set in preseed file and override the hostname at the end of the installation. If not set then it keeps the hostname as is.
>From 53522b8129f9542a1d7c9a21344d8b8b2732c9ce Mon Sep 17 00:00:00 2001
From: Eric Desrochers <eric.desrochers@canonical.com>
Date: Tue, 20 Sep 2016 20:02:16 -0400
Subject: [PATCH] Fix netcfg/hostname that does not set hostname
---
finish-install.d/56netcfg-hostname | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
create mode 100755 finish-install.d/56netcfg-hostname
diff --git a/finish-install.d/56netcfg-hostname b/finish-install.d/56netcfg-hostname
new file mode 100755
index 0000000..2256c5b
--- /dev/null
+++ b/finish-install.d/56netcfg-hostname
@@ -0,0 +1,17 @@
+#! /bin/sh
+set -e
+
+PROGNAME=$(basename $0)
+CURRENT_HOSTNAME=`/bin/hostname`
+NETCFG_HOSTNAME=`/bin/debconf-get netcfg/hostname`
+
+# Override hostname, if "netcfg/hostname" is set in preseed file. #
+if [ -n "$NETCFG_HOSTNAME" ]; then
+ /bin/sed -i "s/$CURRENT_HOSTNAME/$NETCFG_HOSTNAME/" /target/etc/hostname
+ /bin/sed -i "s/$CURRENT_HOSTNAME/$NETCFG_HOSTNAME/" /target/etc/hosts
+ /usr/bin/logger "$PROGNAME: d-i netcfg/hostname $NETCFG_HOSTNAME took precedence"
+
+# Keep hostname as is, if "netcfg/hostname" is not set in preseed file. #
+else
+ exit 0
+fi
--
2.5.0
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