Percona Xtradb Cluster image building scripts

Making a new datastore pxc image with the Percona Xtradb Cluster 5.5
packages from the public ubuntu repository.

Ran into some odd issues when booting the image where the guest agent
would start and stop the pxc service and about 60% of the time the
upstart process would start mysql when the guest was expecting mysql
to be stopped.

Implements: blueprint support-pxc-56
Change-Id: I0f95341e4e89572f784d87ff593939d1b464779c

.gitignore

@@ -22,3 +22,4 @@ options.rc
 *.log
 .local.conf
 scripts/local.conf.d/local.conf.d
+*.config/

scripts/files/elements/ubuntu-pxc/install.d/30-mysql

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+# CONTEXT: GUEST during CONSTRUCTION as ROOT
+# PURPOSE: Install controller base required packages
+
+set -e
+set -o xtrace
+
+export DEBIAN_FRONTEND=noninteractive
+apt-get -y install percona-xtradb-cluster-server percona-xtrabackup
+
+# Don't auto start mysql (we'll start it up in guest)
+update-rc.d mysql defaults
+update-rc.d mysql disable

scripts/files/elements/ubuntu-pxc/pre-install.d/10-mysql-update

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+
+# CONTEXT: GUEST during PRE-CONSTRUCTION as ROOT
+# PURPOSE: Force a repo update
+
+set -e
+set -o xtrace
+
+apt-get update

scripts/files/elements/ubuntu-pxc/pre-install.d/20-apparmor-mysql-local

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+set -e
+
+#CONTEXT: chroot on host
+#PURPOSE: Allows mysqld to create temporary files when restoring backups
+
+cat <<EOF >>/etc/apparmor.d/local/usr.sbin.mysqld
+  /tmp/ rw,
+  /tmp/** rwk,
+EOF

scripts/functions_qemu

@@ -58,7 +58,7 @@ function build_guest_image() {
         exit 1
     fi
     SERVICE_TYPE=$1
-    VALID_SERVICES='mysql percona redis cassandra couchbase mongodb postgresql couchdb vertica db2'
+    VALID_SERVICES='mysql percona redis cassandra couchbase mongodb postgresql couchdb vertica db2 pxc'
     if ! [[ " $VALID_SERVICES " =~ " $SERVICE_TYPE " ]]; then
         exclaim "You did not pass in a valid image type. Valid types are:" $VALID_SERVICES
         exit 1

scripts/redstack

@@ -482,6 +482,9 @@ function cmd_set_datastore() {
     elif [ "$DATASTORE_TYPE" == "percona" ]; then
         PACKAGES=${PACKAGES:-"percona-server-server-5.5"}
         VERSION="5.5"
+    elif [ "$DATASTORE_TYPE" == "pxc" ]; then
+        PACKAGES=${PACKAGES:-"percona-xtradb-cluster-server"}
+        VERSION="5.5"
     elif [ "$DATASTORE_TYPE" == "mongodb" ]; then
         PACKAGES=${PACKAGES:-"mongodb-org"}
         VERSION="3.0"
@@ -635,22 +638,29 @@ function mod_confs() {
     fi
 
     if [ "$DATASTORE_TYPE" = "vertica" ]; then
-        # Setting cluster_member_count to 2 to decrease cluster spawn time.
-        iniset $TROVE_CONF vertica cluster_member_count 2
-
         # Vertica needs more time than mysql for its boot/start/stop operations.
-        iniset $TROVE_TASKMANAGER_CONF DEFAULT agent_call_high_timeout 300
-        iniset $TROVE_TASKMANAGER_CONF DEFAULT cluster_usage_timeout 2000
-        iniset $TROVE_TASKMANAGER_CONF DEFAULT resize_time_out 900
-        iniset $TROVE_TASKMANAGER_CONF DEFAULT usage_timeout 1500
+        setup_cluster_configs
 
         # Setting flavor to be >= 2GB RAM for Vertica guest instances in test.conf.
         sed -i "s/m1.rd-tiny/m1.small/g" $TEST_CONF
         sed -i "s/m1.rd-smaller/m1.medium/g" $TEST_CONF
     fi
 
+    if [ "$DATASTORE_TYPE" = "pxc" ]; then
+        setup_cluster_configs
+    fi
+
 }
 
+function setup_cluster_configs() {
+    # Setting cluster_member_count to 2 to decrease cluster spawn time.
+    iniset $TROVE_CONF $DATASTORE_TYPE cluster_member_count 2
+    # Setting cluster configs
+    iniset $TROVE_TASKMANAGER_CONF DEFAULT agent_call_high_timeout 300
+    iniset $TROVE_TASKMANAGER_CONF DEFAULT cluster_usage_timeout 2000
+    iniset $TROVE_TASKMANAGER_CONF DEFAULT resize_time_out 900
+    iniset $TROVE_TASKMANAGER_CONF DEFAULT usage_timeout 1500
+}
 
 function add_test_flavors() {
     add_flavor 'tinier' 6 506 10 1 0