Add clean.sh

clean.sh gets rid of all residue of running DevStack except installed
packages and pip modules.

And it eradicates rabbitmq-server and ts erlang dependencies as well as
the other RPC backends and databases.

Change-Id: I2b9a251a0a151c012bae85a5a2f9c2f72e7700be

clean.sh

@@ -0,0 +1,91 @@
+#!/usr/bin/env bash
+
+# **clean.sh**
+
+# ``clean.sh`` does its best to eradicate traces of a Grenade
+# run except for the following:
+# - both base and target code repos are left alone
+# - packages (system and pip) are left alone
+
+# This means that all data files are removed.  More??
+
+# Keep track of the current devstack directory.
+TOP_DIR=$(cd $(dirname "$0") && pwd)
+
+# Import common functions
+source $TOP_DIR/functions
+
+# Load local configuration
+source $TOP_DIR/stackrc
+
+# Get the variables that are set in stack.sh
+source $TOP_DIR/.stackenv
+
+# Determine what system we are running on.  This provides ``os_VENDOR``,
+# ``os_RELEASE``, ``os_UPDATE``, ``os_PACKAGE``, ``os_CODENAME``
+# and ``DISTRO``
+GetDistro
+
+
+# Import database library
+source $TOP_DIR/lib/database
+source $TOP_DIR/lib/rpc_backend
+
+source $TOP_DIR/lib/tls
+source $TOP_DIR/lib/horizon
+source $TOP_DIR/lib/keystone
+source $TOP_DIR/lib/glance
+source $TOP_DIR/lib/nova
+source $TOP_DIR/lib/cinder
+source $TOP_DIR/lib/swift
+source $TOP_DIR/lib/ceilometer
+source $TOP_DIR/lib/heat
+source $TOP_DIR/lib/quantum
+source $TOP_DIR/lib/baremetal
+source $TOP_DIR/lib/ldap
+
+
+# See if there is anything running...
+# need to adapt when run_service is merged
+SESSION=$(screen -ls | awk '/[0-9].stack/ { print $1 }')
+if [[ -n "$SESSION" ]]; then
+    # Let unstack.sh do its thing first
+    $TOP_DIR/unstack.sh --all
+fi
+
+# Clean projects
+cleanup_cinder
+cleanup_glance
+cleanup_keystone
+cleanup_nova
+cleanup_quantum
+cleanup_swift
+
+# cinder doesn't clean up the volume group as it might be used elsewhere...
+# clean it up if it is a loop device
+VG_DEV=$(sudo losetup -j $DATA_DIR/${VOLUME_GROUP}-backing-file | awk -F':' '/backing-file/ { print $1}')
+if [[ -n "$VG_DEV" ]]; then
+    sudo losetup -d $VG_DEV
+fi
+
+#if mount | grep $DATA_DIR/swift/drives; then
+#  sudo umount $DATA_DIR/swift/drives/sdb1
+#fi
+
+
+# Clean out /etc
+sudo rm -rf /etc/keystone /etc/glance /etc/nova /etc/cinder /etc/swift
+
+# Clean out tgt
+sudo rm /etc/tgt/conf.d/*
+
+# Clean up the message queue
+cleanup_rpc_backend
+cleanup_database
+
+# Clean up networking...
+# should this be in nova?
+# FIXED_IP_ADDR in br100
+
+# Clean up files
+#rm -f .stackenv

functions

@@ -775,6 +775,21 @@ function install_package() {
 }
 
 
+# Distro-agnostic package uninstaller
+# uninstall_package package [package ...]
+function uninstall_package() {
+    if is_ubuntu; then
+        apt_get purge "$@"
+    elif is_fedora; then
+        yum remove -y "$@"
+    elif is_suse; then
+        rpm -e "$@"
+    else
+        exit_distro_not_supported "uninstalling packages"
+    fi
+}
+
+
 # Distro-agnostic function to tell if a package is installed
 # is_package_installed package [package ...]
 function is_package_installed() {

lib/database

@@ -42,6 +42,11 @@ done
 # This is not an error as multi-node installs will do this on the compute nodes
 
 
+# Get rid of everything enough to cleanly change database backends
+function cleanup_database {
+    cleanup_database_$DATABASE_TYPE
+}
+
 # Set the database type based on the configuration
 function initialize_database_backends {
     for backend in $DATABASE_BACKENDS; do

lib/databases/mysql

@@ -10,6 +10,24 @@ set +o xtrace
 
 register_database mysql
 
+# Get rid of everything enough to cleanly change database backends
+function cleanup_database_mysql {
+    if is_ubuntu; then
+        # Get ruthless with mysql
+        stop_service $MYSQL
+        sudo aptitude purge -y ~nmysql-server
+        sudo rm -rf /var/lib/mysql
+        return
+    elif is_fedora; then
+        MYSQL=mysqld
+    elif is_suse; then
+        MYSQL=mysql
+    else
+        return
+    fi
+    stop_service $MYSQL
+}
+
 function recreate_database_mysql {
     local db=$1
     local charset=$2

lib/databases/postgresql

@@ -10,6 +10,20 @@ set +o xtrace
 
 register_database postgresql
 
+# Get rid of everything enough to cleanly change database backends
+function cleanup_database_postgresql {
+    stop_service postgresql
+    if is_ubuntu; then
+        # Get ruthless with mysql
+        sudo aptitude purge -y  ~npostgresql
+        return
+    elif is_fedora; then
+        uninstall_package postgresql-server
+    else
+        return
+    fi
+}
+
 function recreate_database_postgresql {
     local db=$1
     local charset=$2

lib/glance

@@ -59,8 +59,7 @@ GLANCE_HOSTPORT=${GLANCE_HOSTPORT:-$SERVICE_HOST:9292}
 function cleanup_glance() {
     # kill instances (nova)
     # delete image files (glance)
-    # This function intentionally left blank
+    sudo rm -rf $GLANCE_CACHE_DIR $GLANCE_IMAGE_DIR $GLANCE_AUTH_CACHE_DIR
-    :
 }
 
 # configure_glanceclient() - Set config files, create data dirs, etc

lib/nova

@@ -106,6 +106,8 @@ function cleanup_nova() {
         # Clean out the instances directory.
         sudo rm -rf $NOVA_INSTANCES_PATH/*
     fi
+
+    sudo rm -rf $NOVA_STATE_PATH $NOVA_AUTH_CACHE_DIR
 }
 
 # configure_novaclient() - Set config files, create data dirs, etc
@@ -308,9 +310,6 @@ EOF"
                 sudo chown -R $STACK_USER $NOVA_INSTANCES_PATH
             fi
         fi
-
-        # Clean up old instances
-        cleanup_nova
     fi
 }
 

lib/quantum

@@ -211,8 +211,6 @@ function configure_quantum() {
     fi
 
     _configure_quantum_debug_command
-
-    _cleanup_quantum
 }
 
 function create_nova_conf_quantum() {
@@ -385,9 +383,9 @@ function stop_quantum() {
     fi
 }
 
-# _cleanup_quantum() - Remove residual data files, anything left over from previous
+# cleanup_quantum() - Remove residual data files, anything left over from previous
 # runs that a clean run would need to clean up
-function _cleanup_quantum() {
+function cleanup_quantum() {
     :
 }
 

lib/rpc_backend

@@ -43,6 +43,38 @@ function check_rpc_backend() {
     fi
 }
 
+# clean up after rpc backend - eradicate all traces so changing backends
+# produces a clean switch
+function cleanup_rpc_backend {
+    if is_service_enabled rabbit; then
+        # Obliterate rabbitmq-server
+        uninstall_package rabbitmq-server
+        sudo killall epmd
+        if is_ubuntu; then
+            # And the Erlang runtime too
+            sudo aptitude purge -y ~nerlang
+        fi
+    elif is_service_enabled qpid; then
+        if is_fedora; then
+            uninstall_package qpid-cpp-server-daemon
+        elif is_ubuntu; then
+            uninstall_package qpidd
+        else
+            exit_distro_not_supported "qpid installation"
+        fi
+    elif is_service_enabled zeromq; then
+        if is_fedora; then
+            uninstall_package zeromq python-zmq
+        elif is_ubuntu; then
+            uninstall_package libzmq1 python-zmq
+        elif is_suse; then
+            uninstall_package libzmq1 python-pyzmq
+        else
+            exit_distro_not_supported "zeromq installation"
+        fi
+    fi
+}
+
 # install rpc backend
 function install_rpc_backend() {
     if is_service_enabled rabbit; then

lib/swift

@@ -388,9 +388,11 @@ function start_swift() {
 # stop_swift() - Stop running processes (non-screen)
 function stop_swift() {
     # screen normally killed by unstack.sh
-    if type -p swift-init >/dev/null;then
+    if type -p swift-init >/dev/null; then
         swift-init --run-dir=${SWIFT_DATA_DIR}/run all stop || true
     fi
+    # Dump the proxy server
+    sudo pkill -f swift-proxy-server
 }
 
 # Restore xtrace

stack.sh

@@ -725,6 +725,8 @@ fi
 configure_glanceclient
 
 if is_service_enabled nova; then
+    # First clean up old instances
+    cleanup_nova
     configure_nova
 fi
 if is_service_enabled horizon; then