From 0b9c332f7101c890c5bb1c65f9c89d82bd759a04 Mon Sep 17 00:00:00 2001
From: Don Penney <don.penney@windriver.com>
Date: Thu, 23 Nov 2017 16:46:31 -0500
Subject: [PATCH] Cache server ip in /etc/hosts

---
 data/systemd/anaconda.service |  1 +
 scripts/anaconda-preexec      | 50 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)
 create mode 100644 scripts/anaconda-preexec

diff --git a/data/systemd/anaconda.service b/data/systemd/anaconda.service
index a80c6bb..8966258 100644
--- a/data/systemd/anaconda.service
+++ b/data/systemd/anaconda.service
@@ -7,4 +7,5 @@ Wants=anaconda-noshell.service
 Type=forking
 Environment=HOME=/root MALLOC_CHECK_=2 MALLOC_PERTURB_=204 PATH=/usr/bin:/bin:/sbin:/usr/sbin:/mnt/sysimage/bin:/mnt/sysimage/usr/bin:/mnt/sysimage/usr/sbin:/mnt/sysimage/sbin LANG=en_US.UTF-8 GDK_BACKEND=x11 XDG_RUNTIME_DIR=/tmp GIO_USE_VFS=local
 WorkingDirectory=/root
+ExecStartPre=/usr/sbin/anaconda-preexec
 ExecStart=/usr/bin/tmux -u -f /usr/share/anaconda/tmux.conf start
diff --git a/scripts/anaconda-preexec b/scripts/anaconda-preexec
new file mode 100644
index 0000000..e3f79a4
--- /dev/null
+++ b/scripts/anaconda-preexec
@@ -0,0 +1,50 @@
+#!/bin/bash
+#
+# Copyright (c) 2017 Wind River Systems, Inc.
+# SPDX-License-Identifier: Apache-2.0
+#
+#
+#
+#
+
+exec >>/tmp/anaconda-preexec.log
+exec 2>>/tmp/anaconda-preexec.log
+set -x
+
+function get_ip()
+{
+    local host=$1
+
+    # Try the DNS query
+    host -t A $host | awk '{print $4}' | grep '^[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*$' | head -1
+}
+
+# If the kickstart is net-based, wait for connectivity to server
+cat /proc/cmdline | grep -q 'inst\.ks=http://'
+if [ $? -eq 0 ]
+then
+    server=$(cat /proc/cmdline | sed -r 's#.*inst\.ks=http://([^/]*)/.*#\1#')
+    if [ -n "$server" ]
+    then
+        echo "Testing connectivity to server: $server"
+        let -i ping_count=0
+        ping -c 1 -w 60 $server
+        while [ $? -ne 0 -a $ping_count -lt 600 ]
+        do
+            echo "Waiting for connectivity to server: $server"
+            sleep 1
+            let -i ping_count++
+            ping -c 1 -w 60 $server
+        done
+
+        # Cache the host IP
+        ipaddr=$(get_ip $server)
+        if [ -n "$ipaddr" -a "$ipaddr" != "$server" ]
+        then
+            echo "$ipaddr $server" >> /etc/hosts
+        fi
+
+    fi
+fi
+
+exit 0
-- 
1.8.3.1