Adds Ubuntu and Debian to ironic-python-agent Support-list

Adds support for Ubuntu and Debian to ironic-python-agent. This will
enable building ramdisk with Ubuntu and Debian as base OS.

Updated README to further clarify what the element does.

Change-Id: I194f85b051974d8ccb197a0993a67761046cfe98

elements/ironic-agent/README.rst

@@ -1,5 +1,17 @@
 ============
 ironic-agent
 ============
-Build ramdisk with ironic-python-agent.
-Works only on Fedora, therefore fedora element is mandatory.
+Builds a ramdisk with ironic-python-agent.  More information can be found at:
+    https://github.com/openstack/ironic-python-agent/
+
+Beyond installing the ironic-python-agent, this element does the following:
+
+* Installs the ``dhcp-all-interfaces`` so the node, upon booting, attempts to
+  obtain an IP address on all available network interfaces.
+* Disables the ``iptables`` service on SysV and systemd based systems.
+* Disables the ``ufw`` service on Upstart based systems.
+* Installs packages required for the operation of the ironic-python-agent::
+    ``qemu-utils`` ``parted`` ``hdparm`` ``util-linux`` ``genisoimage``
+* When installing from source, ``python-dev`` and ``gcc`` are also installed
+  in order to support source based installation of ironic-python-agent and its
+  dependencies.

elements/ironic-agent/install.d/60-ironic-agent-install

@@ -6,6 +6,7 @@ fi
 set -eu
 set -o pipefail
 
+SCRIPTDIR=$(dirname $0)
 install-packages python-dev qemu-utils parted hdparm util-linux genisoimage gcc
 
 # Install the latest version of pip and setuptools which has some
@@ -18,13 +19,24 @@ pip install -U setuptools
 pip install -r /tmp/ironic-python-agent/requirements.txt
 pip install /tmp/ironic-python-agent
 
-sudo echo $'[Unit]
-Description=Ironic Python Agent\n
-[Service]
-ExecStart=/usr/bin/ironic-python-agent
-Restart=always
-RestartSec=30s\n
-[Install]
-WantedBy=multi-user.target\n' > /usr/lib/systemd/system/ironic-python-agent.service
+if [ ! -f /usr/bin/ironic-python-agent ]; then
+    ln -s /usr/local/bin/ironic-python-agent /usr/bin/ironic-python-agent
+fi
 
-sudo systemctl enable ironic-python-agent.service
+case "$DIB_INIT_SYSTEM" in
+    upstart)
+        install -D -g root -o root -m 0755 ${SCRIPTDIR}/ironic-python-agent.conf /etc/init/ironic-python-agent.conf
+        ;;
+    systemd)
+        install -D -g root -o root -m 0755 ${SCRIPTDIR}/ironic-python-agent.service /usr/lib/systemd/system/ironic-python-agent.service
+        systemctl enable ironic-python-agent.service
+        ;;
+    sysv)
+        install -D -g root -o root -m 0755 ${SCRIPTDIR}/ironic-python-agent.init /etc/init.d/ironic-python-agent.init
+        update-rc.d ironic-python-agent.init defaults
+        ;;
+    *)
+        echo "Unsupported init system"
+        exit 1
+        ;;
+esac

elements/ironic-agent/install.d/ironic-python-agent.conf

@@ -0,0 +1,20 @@
+# ironic-python-agent - Openstack Ironic Python Agnet
+#
+# The ironic-python-agent helps ironic in deploying instances.
+
+description     "Ironic Python Agnet"
+
+start on runlevel [2345]
+stop on runlevel [!2345]
+
+respawn
+respawn limit 10 5
+umask 022
+
+expect stop
+
+pre-start script
+    echo Starting Ironic Python Agnet
+end script
+
+exec /usr/bin/ironic-python-agent

elements/ironic-agent/install.d/ironic-python-agent.init

@@ -0,0 +1,31 @@
+#!/bin/sh -e
+### BEGIN INIT INFO
+# Provides:          ironic-python-agent
+# Required-Start:    $local_fs networking
+# Required-Stop:     $local_fs
+# Default-Start:     S
+# Default-Stop:      0 6
+# X-Start-Before:
+# Short-Description: Ironic Python Agent
+# Description:       Starts Ironic Python Agent for instance deployment
+### END INIT INFO
+
+NAME=ironic-python-agent
+INIT_NAME=/etc/init.d/${NAME}
+SCRIPT_NAME=/usr/bin/${NAME}
+
+[ -x $SCRIPT_NAME ] || exit 0
+
+case "$1" in
+    start)
+        $SCRIPT_NAME
+        ;;
+    stop)
+        ;;
+    *)
+        echo "Usage: $INIT_NAME {start|stop}"
+        exit 1
+        ;;
+esac
+
+exit 0

elements/ironic-agent/install.d/ironic-python-agent.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=Ironic Python Agent
+After=network.target
+
+[Service]
+ExecStart=/usr/bin/ironic-python-agent
+Restart=always
+RestartSec=30s
+
+[Install]
+WantedBy=multi-user.target
+

elements/ironic-agent/package-installs.yaml

@@ -1 +1 @@
-scsi-target-utils:
+tgt:

elements/ironic-agent/pkg-map

@@ -0,0 +1,21 @@
+{
+  "distro": {
+    "rhel": {
+      "tgt": "targetcli"
+    },
+    "centos":{
+      "tgt": "scsi-target-utils"
+    }
+  },
+  "family": {
+    "redhat": {
+      "tgt": "scsi-target-utils"
+    },
+    "debian": {
+      "tgt": "tgt"
+    }
+  },
+  "default": {
+    "tgt": "tgt"
+  }
+}

elements/ironic-agent/post-install.d/80-ironic-agent

@@ -9,4 +9,20 @@ set -o pipefail
 install-packages -e python-dev git cloud-init
 rm -rf /tmp/ironic-python-agent
 
-sudo systemctl disable iptables.service
+case "$DIB_INIT_SYSTEM" in
+    upstart)
+        if [ -f /etc/init/ufw.conf ]; then
+            mv /etc/init/ufw.conf /etc/init/ufw.conf.disabled
+        fi
+        ;;
+    systemd)
+        systemctl disable iptables.service
+        ;;
+    sysv)
+        update-rc.d iptables disable
+        ;;
+    *)
+        echo "Unsupported init system"
+        exit 1
+        ;;
+esac