Add 2 Readme files.

README.cleanup_bruteforce_attempts

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+# -----
+# Cleanup table bruteforce_attempts
+# -----
+
+DATABASE_NAME='cloud_01'
+MYSQL_CREDENTIAL_ARGS="--defaults-file=/usr/local/mysql/sys-maint.cnf"
+
+# Delete entries older than 60 minutes
+#
+mysql $MYSQL_CREDENTIAL_ARGS $DATABASE_NAME -N -s \
+   -e "DELETE FROM bruteforce_attempts WHERE occurred < UNIX_TIMESTAMP( DATE_SUB( NOW(), INTERVAL 60 MINUTE));"