db: lock down open-forum and make cleanup better

service/init.sql

@@ -3,7 +3,7 @@ CREATE DATABASE premium_forum;
 CREATE USER 'web'@'10.6.0.3';
 CREATE USER 'proxy'@'10.6.0.4';
 CREATE USER 'premium_forum'@'10.5.0.3';
-CREATE USER 'open_forum';
+CREATE USER 'open_forum'@'10.5.0.4';
 
 GRANT INSERT,SELECT ON pod.* TO "web"@"10.6.0.3";
 GRANT SELECT ON pod.* TO "proxy"@"10.6.0.4";
@@ -33,9 +33,10 @@ CREATE TABLE post(
   created DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
 );
 GRANT UPDATE(plan) on user TO "web"@"10.6.0.3";
-GRANT INSERT,UPDATE,SELECT on post TO "open_forum";
-GRANT SELECT,UPDATE(censor_data) on user TO "open_forum";
-CREATE EVENT cleanup_user ON SCHEDULE EVERY 5 SECOND DO DELETE FROM user WHERE TIMESTAMPDIFF(SECOND, created, CURRENT_TIME) > 600;
+GRANT INSERT,UPDATE,SELECT on post TO "open_forum"@"10.5.0.4";
+GRANT SELECT,UPDATE(censor_data) on user TO "open_forum"@"10.5.0.4";
+CREATE EVENT cleanup_user ON SCHEDULE EVERY 5 SECOND DO DELETE FROM user WHERE TIMESTAMPDIFF(SECOND, created, CURRENT_TIME) > 900;
+CREATE EVENT cleanup_post ON SCHEDULE EVERY 5 SECOND DO DELETE FROM post WHERE TIMESTAMPDIFF(SECOND, created, CURRENT_TIME) > 900;
 
 use premium_forum;
 CREATE TABLE post(
@@ -47,4 +48,4 @@ CREATE TABLE post(
   created DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
 );
 CREATE INDEX post_thread_IDX ON post(thread);
-CREATE EVENT cleanup_post ON SCHEDULE EVERY 5 SECOND DO DELETE FROM post WHERE TIMESTAMPDIFF(SECOND, created, CURRENT_TIME) > 600;
+CREATE EVENT cleanup_post ON SCHEDULE EVERY 5 SECOND DO DELETE FROM post WHERE TIMESTAMPDIFF(SECOND, created, CURRENT_TIME) > 900;