Update user-data examples

With #2, dhcpcd is masked in the image, so no need to stop and disable
it in bootcmd anymore.

.gitignore

@@ -1,3 +1,4 @@
 *.img
 *.zip
 /.vagrant
+.idea

examples/k3s-cluster/raspberry-0/user-data.yaml

@@ -1,6 +1,8 @@
 #cloud-config
 
 hostname: raspberry-0
+# update /etc/hosts according to hostname (otherwise sudo will complain)
+manage_etc_hosts: true
 locale: en_US.UTF-8
 timezone: Europe/Berlin
 
@@ -22,8 +24,6 @@ users:
 ssh_pwauth: false
 
 bootcmd:
-# disable dhcpcd so it doesn't interfere with our static IP config
-- systemctl disable dhcpcd && systemctl stop dhcpcd
 # disable ipv6 on all interfaces
 - sysctl net.ipv6.conf.all.disable_ipv6=1
 
@@ -166,7 +166,3 @@ write_files:
           image:
             repository: metallb/speaker
             tag: v0.9.5
-
-runcmd:
-# fix /etc/hosts entry for hostname, otherwise sudo will complain
-- sed -i "s/raspberrypi/$(hostname)/" /etc/hosts

examples/k3s-cluster/raspberry-1/user-data.yaml

@@ -1,6 +1,8 @@
 #cloud-config
 
 hostname: raspberry-1
+# update /etc/hosts according to hostname (otherwise sudo will complain)
+manage_etc_hosts: true
 locale: en_US.UTF-8
 timezone: Europe/Berlin
 
@@ -22,8 +24,6 @@ users:
 ssh_pwauth: false
 
 bootcmd:
-# disable dhcpcd so it doesn't interfere with our static IP config
-- systemctl disable dhcpcd && systemctl stop dhcpcd
 # disable ipv6 on all interfaces
 - sysctl net.ipv6.conf.all.disable_ipv6=1
 
@@ -163,7 +163,3 @@ write_files:
           image:
             repository: metallb/speaker
             tag: v0.9.5
-
-runcmd:
-# fix /etc/hosts entry for hostname, otherwise sudo will complain
-- sed -i "s/raspberrypi/$(hostname)/" /etc/hosts

examples/simple/user-data.yaml

@@ -1,6 +1,8 @@
 #cloud-config
 
 hostname: raspberry-0
+# update /etc/hosts according to hostname (otherwise sudo will complain)
+manage_etc_hosts: true
 locale: en_US.UTF-8
 timezone: Europe/Berlin
 
@@ -40,7 +42,3 @@ ssh_pwauth: false
 #     #!/bin/bash
 #     echo "Hello cloud-init on Raspberry Pi!"
 #     date > /tmp/per-once-was-here
-
-runcmd:
-# fix /etc/hosts entry for hostname, otherwise sudo will complain
-- sed -i "s/raspberrypi/$(hostname)/" /etc/hosts

examples/static-ip/user-data.yaml

@@ -1,6 +1,8 @@
 #cloud-config
 
 hostname: raspberry-0
+# update /etc/hosts according to hostname (otherwise sudo will complain)
+manage_etc_hosts: true
 locale: en_US.UTF-8
 timezone: Europe/Berlin
 
@@ -24,11 +26,5 @@ users:
 ssh_pwauth: false
 
 bootcmd:
-# disable dhcpcd so it doesn't interfere with our static IP config
-- systemctl disable dhcpcd && systemctl stop dhcpcd
 # disable ipv6 on all interfaces
 - sysctl net.ipv6.conf.all.disable_ipv6=1
-
-runcmd:
-# fix /etc/hosts entry for hostname, otherwise sudo will complain
-- sed -i "s/raspberrypi/$(hostname)/" /etc/hosts

user-data.yaml

@@ -1,6 +1,8 @@
 #cloud-config
 
 hostname: raspberry-0
+# update /etc/hosts according to hostname (otherwise sudo will complain)
+manage_etc_hosts: true
 locale: en_US.UTF-8
 timezone: Europe/Berlin
 
@@ -28,8 +30,6 @@ users:
 ssh_pwauth: false
 
 bootcmd:
-# disable dhcpcd so it doesn't interfere with our static IP config
-- systemctl disable dhcpcd && systemctl stop dhcpcd
 # disable ipv6 on all interfaces
 - sysctl net.ipv6.conf.all.disable_ipv6=1
 
@@ -46,8 +46,3 @@ write_files:
     #!/bin/bash
     echo "Hello cloud-init on Raspberry Pi!"
     date > /tmp/per-once-was-here
-
-
-runcmd:
-# fix /etc/hosts entry for hostname, otherwise sudo will complain
-- sed -i "s/raspberrypi/$(hostname)/" /etc/hosts