jaamo · November 25, 2016 07:44 · Nov 25, 2016
diff --git a/galera config b/galera config
@@ -0,0 +1,59 @@
+#!/bin/bash
+
+# Simple mysqld start script for containers
+# We do not use mysqld_safe
+
+# Variables
+
+MYSQLD=mysqld
+LOG_MESSAGE="Docker startscript: "
+wsrep_recover_position=
+OPT="$@"
+
+# Do we want to check for programms?
+
+which $MYSQLD || exit 1
+
+# Check for mysql.* schema
+# If it does not exists we got to create it
+
+test -d /var/lib/mysql/mysql
+if [ $? != 0 ]; then
+  mysql_install_db --user=mysql
+  if [ $? != 0 ]; then
+    echo "${LOG_MESSAGE} Tried to install mysql.* schema because /var/lib/mysql seemed empty"
+    echo "${LOG_MESSAGE} it failed :("
+  fi
+fi
+
+# Get the GTID possition
+
+echo  "${LOG_MESSAGE} Get the GTID positon"
+tmpfile=$(mktemp)
+$MYSQLD --wsrep-recover 2>${tmpfile}
+if [ $? != 0 ]; then
+  echo "${LOG_MESSAGE} An error happened while trying to '--wsrep-recover'"
+  cat ${tmpfile}
+  rm  ${tmpfile}
+  exit 1
+fi
+
+wsrep_start_position=$(sed -n 's/.*Recovered\ position:\s*//p' ${tmpfile})
+
+# What should we do if there is no recoverd position?
+# We will not start, as most likely Galera is not configured
+
+if test -z ${wsrep_start_position}
+  then echo "${LOG_MESSAGE} We found no wsrep position!"
+       echo "${LOG_MESSAGE} Most likely Galera is not configured, so we refuse to start"
+       exit 1
+fi
+
+# Start mysqld
+
+exec $MYSQLD $OPT --wsrep_start_position=$wsrep_start_position
+
+# We should never end in here
+
+echo "${LOG_MESSAGE} Uhh thats evil! How are you able to see this in your log?!"
+exit 1