Refactor mysql element to do less in first-boot.d

We didn't need to do most of this anyway, we just needed to configure
mysql before we installed the packages in the image. Some of the other
things were half-baked ideas which will come in later changes to add
os-refresh-config and os-config-applier support to the element.

Change-Id: Ib1b66a8b3b70fac10f3f826b1efd414c67f9bfc6

elements/mysql/first-boot.d/50-mysql

@@ -1,29 +0,0 @@
-#!/bin/bash
-set -uex
-
-CNF=/etc/mysql/my.cnf
-cp -f $(dirname $0)/my.cnf $CNF
-sed -i "s/^bind-address=.*/bind-address=0.0.0.0/" $CNF
-
-D_SYS_MAINT="--defaults-file=/etc/mysql/debian.cnf"
-
-# Since we will be clearing out ib_*, make sure there aren't any innodb tables.
-if mysqladmin $D_SYS_MAINT ping ; then
-    innodb_tables=$(mysql $D_SYS_MAINT -N -e "SELECT count(*) FROM information_schema.TABLES WHERE ENGINE LIKE 'InnoDB'")
-    if [ -n "$innodb_tables" -a $innodb_tables -gt 0 ] ; then
-        echo Found $innodb_tables InnoDB tables. Any existing data may be lost. ABORT!
-        exit 1
-    fi
-    service mysql stop
-fi
-
-
-# The new my.cnf may not jive with default innodb sizes, so just backup and clear out ib files
-if [ -n "$(ls /var/lib/mysql/ib_*)" ] ; then
-    BACKUP_DIR=/var/backups/mysql-$(date +%Y%m%d%H%M%S)
-    mkdir -p $BACKUP_DIR
-    chmod 700 $BACKUP_DIR
-    mv -f /var/lib/mysql/ib_* $BACKUP_DIR
-fi
-
-service mysql start

elements/mysql/first-boot.d/defaults

@@ -1,15 +0,0 @@
-set -e
-
-MYSQL_PASS=${MYSQL_PASS:-password}
-
-# HOST_IP
-# Find the interface used for the default route
-HOST_IP_IFACE=${HOST_IP_IFACE:-$(ip route | sed -n '/^default/{ s/.*dev \(\w\+\)\s\+.*/\1/; p; }')}
-# Search for an IP unless an explicit is set by ``HOST_IP`` environment variable
-HOST_IP=`LC_ALL=C ip -f inet addr show ${HOST_IP_IFACE} | awk '/inet/ {split($2,parts,"/");  print parts[1]}'`
-
-
-# XXX: get all these from metadata service eventually
-IB_BUF_POOL=100M
-IB_LOG_FILE_SIZE=10M
-

elements/mysql/install.d/10-mysql

@@ -5,5 +5,6 @@
 set -e
 set -o xtrace
 
-#install-packages sysstat mytop percona-toolkit percona-server-server-5.5 percona-server-client-5.5
+install -D -m 0644 -o root -g root  $(dirname $0)/my.cnf /etc/mysql/my.cnf
+
 install-packages sysstat mytop percona-toolkit mysql-server-5.5 mysql-client-5.5

elements/mysql/install.d/my.cnf

@@ -56,8 +56,10 @@ log_queries_not_using_indexes  = 1
 slow_query_log                 = 1
 slow_query_log_file            = /var/log/mysql/mysql-slow.log
 
-server_id                      = 1
+# server_id set in /etc/mysql/conf.d/server_id.cnf
+# server_id                      = 1
 log_bin                        = /var/lib/mysql/mysql-bin
 expire_logs_days               = 7
 max_binlog_size                = 100M
 binlog_format                  = ROW
+!includedir /etc/mysql/conf.d/