Cronからmysqlに関するエラーメールが届いた
mysqldump: Got error: 145: Table ‘./nucleus/nucleus_plugin_counter’ is marked as crashed and should be repaired when using LOCK TABLES
更新が止まってる状態の「あにょのブログ」のカウンターのところにもエラーメッセージが・・・
mySQL error with query SELECT * FROM nucleus_plugin_counter ORDER BY count_time DESC LIMIT 1: Table ‘./nucleus/nucleus_plugin_counter’ is marked as crashed and should be repaired
どうやらカウンターのデータベースが壊れたようだ
■ データベースのエラーを確認

[root@server1 ~]# mysql -u root -pパスワード
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 45165
Server version: 5.1.73 Source distribution
Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
■ 問題のデータベースに接続
mysql> use nucleus;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
■ エラーチェック
mysql> check table nucleus_plugin_counter;
+--------------------------------+-------+----------+----------------------------------------------------------+
| Table                          | Op    | Msg_type | Msg_text                                                 |
+--------------------------------+-------+----------+----------------------------------------------------------+
| nucleus.nucleus_plugin_counter | check | warning  | Table is marked as crashed                               |
| nucleus.nucleus_plugin_counter | check | warning  | 2 clients are using or haven't closed the table properly |
| nucleus.nucleus_plugin_counter | check | error    | Found 13708 keys of 13709                                |
| nucleus.nucleus_plugin_counter | check | error    | Corrupt                                                  |
+--------------------------------+-------+----------+----------------------------------------------------------+
4 rows in set (0.01 sec)
■ 壊れているテーブルを修復
mysql> repair table nucleus_plugin_counter;
+--------------------------------+--------+----------+--------------------------------------------+
| Table                          | Op     | Msg_type | Msg_text                                   |
+--------------------------------+--------+----------+--------------------------------------------+
| nucleus.nucleus_plugin_counter | repair | warning  | Number of rows changed from 13709 to 13707 |
| nucleus.nucleus_plugin_counter | repair | status   | OK                                         |
+--------------------------------+--------+----------+--------------------------------------------+
2 rows in set (0.12 sec)
■ 修復できたか確認
mysql> check table nucleus_plugin_counter;
+--------------------------------+-------+----------+----------+
| Table                          | Op    | Msg_type | Msg_text |
+--------------------------------+-------+----------+----------+
| nucleus.nucleus_plugin_counter | check | status   | OK       |
+--------------------------------+-------+----------+----------+
1 row in set (0.01 sec)
mysql>exit

問題なく修復できたようだ。
ブログのカウンター表示も元に戻った。