Clean up the MySQL element to make it suitable for generic use.

Change-Id: Ib3e384d6fb48e6df53a0897bcc48bbb46995a824

elements/mysql/first-boot.d/05-ipforwarding

@@ -1,5 +0,0 @@
-#!/bin/bash
-set -e
-set -o xtrace
-sed -i -r 's/^\s*#(net\.ipv4\.ip_forward=1.*)/\1/' /etc/sysctl.conf
-echo 1 > /proc/sys/net/ipv4/ip_forward

elements/mysql/first-boot.d/10-ntp

@@ -1,11 +0,0 @@
-#!/bin/bash
-ntpfile=`mktemp`
-cat << EOF > $ntpfile
-server ntp.ubuntu.com iburst
-server 127.127.1.0
-fudge 127.127.1.0 stratum 10
-EOF
-
-mv /etc/ntp.conf /etc/ntp.conf.orig
-mv $ntpfile /etc/ntp.conf
-service ntp restart

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

@@ -1,24 +1,29 @@
 #!/bin/bash
-set -e
-set -o xtrace
-
-# get MYSQL_PASS and HOST_IP
-source $(dirname $0)/defaults
-
-service mysql stop || true
-
-MYSQL_BOOTSTRAP="/usr/sbin/mysqld --bootstrap --user=mysql --skip-grant-tables"
-
-sqltfile=`mktemp`
-cat <<EOF > $sqltfile
-USE mysql;
-UPDATE user SET password=PASSWORD("$MYSQL_PASS") WHERE user='root';
-EOF
-$MYSQL_BOOTSTRAP < $sqltfile
-rm -f $sqltfile
+set -uex
 
 CNF=/etc/mysql/my.cnf
 cp -f $(dirname $0)/my.cnf $CNF
-sed -i "s/^bind-address=.*/bind-address=$HOST_IP/" $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/my.cnf

@@ -1,14 +1,14 @@
 [mysql]
 port                           = 3306
-socket                         = /var/lib/mysql/data/mysql.sock
+socket                         = /var/run/mysqld/mysqld.sock
 
 [mysqld]
 
 # GENERAL #
 user                           = mysql
 default_storage_engine         = InnoDB
-socket                         = /var/lib/mysql/data/mysql.sock
-pid_file                       = /var/lib/mysql/data/mysql.pid
+socket                         = /var/run/mysqld/mysqld.sock
+pid_file                       = /var/lib/mysql/mysql.pid
 bind-address                   = 0.0.0.0
 
 # MyISAM #
@@ -25,7 +25,7 @@ innodb                         = FORCE
 innodb_strict_mode             = 1
 
 # DATA STORAGE #
-datadir                        = /var/lib/mysql/data/
+datadir                        = /var/lib/mysql/
 
 # CACHES AND LIMITS #
 tmp_table_size                 = 32M
@@ -51,13 +51,13 @@ innodb_buffer_pool_size        = 592M
 
 
 # LOGGING #
-log_error                      = /var/lib/mysql/data/mysql-error.log
+log_error                      = /var/log/mysql/error.log
 log_queries_not_using_indexes  = 1
 slow_query_log                 = 1
-slow_query_log_file            = /var/lib/mysql/data/mysql-slow.log
+slow_query_log_file            = /var/log/mysql/mysql-slow.log
 
 server_id                      = 1
-log_bin                        = /var/lib/mysql/data/mysql-bin
+log_bin                        = /var/lib/mysql/mysql-bin
 expire_logs_days               = 7
 max_binlog_size                = 100M
 binlog_format                  = ROW

elements/mysql/install.d/50-user

@@ -1,12 +0,0 @@
-#!/bin/bash
-# Add the stack user we recommend folk use.
-
-set -e
-set -o xtrace
-
-useradd -G admin -m stack -s /bin/bash
-passwd stack <<EOF
-stack
-stack
-EOF
-