Merge pull request #2089 from SvenDowideit/add-dhcp-debug-hook

add a debug dump of the dhcp server

images/01-base/Dockerfile

@@ -34,6 +34,8 @@ RUN rm /sbin/poweroff /sbin/reboot /sbin/halt && \
 COPY inputrc /etc/inputrc
 COPY growpart /usr/bin/growpart
 COPY start_ntp.sh /bin/start_ntp.sh
+COPY dhcpcd.enter-hook /etc/dhcpcd.enter-hook
+COPY dhcpcd.debug /usr/share/logrotate/logrotate.d/
 RUN sed -i s/"partx --update \"\$part\" \"\$dev\""/"partx --update --nr \"\$part\" \"\$dev\""/g /usr/bin/growpart && \
     sed -i -e 's/duid/clientid/g' /etc/dhcpcd.conf && \
     sed -i 1,10d /etc/rsyslog.conf && \

images/01-base/dhcpcd.debug

@@ -0,0 +1,7 @@
+/var/log/dhcpcd.debug.log
+{
+	rotate 7
+	daily
+	missingok
+	copytruncate
+}

images/01-base/dhcpcd.enter-hook

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+if [ "$(ros config get rancher.debug)" == "true" ]; then
+	echo "DHCPCD: $interface $reason" &>> /var/log/dhcpcd.debug.log
+	echo "$(date)" &>> /var/log/dhcpcd.debug.log
+	set | sed -ne 's/^new_//p' | sort &>> /var/log/dhcpcd.debug.log
+	echo "--------------------------" &>> /var/log/dhcpcd.debug.log
+fi