プラグインを

入れたり/出したりしてたら

面倒なことになった話

2014/08/30 WordFes Nagoya 2014

自己紹介

もやし工房

石黒 光茂

@koike_moyashi

mitsushige.ishiguro

もやし工房

前兆?

無料サーバー監視/ネットワーク監視サービス シーマンhttp://www.cman.jp/network/

無料サーバー監視/ネットワーク監視サービス シーマンhttp://www.cman.jp/network/

とある夜…

とある夜…

こちらは独自のスクリプト

とある夜…

とある夜…

$ sudo tail /var/log/hogehoge

別に変なところ無いよ

$ sudo tail /var/log/httpd/error_log

別に変なところ無いよ

翌朝

CPU使用率

CPU使用率

$ ls /etc/cron.hourly/なんにも無いよ

$

$ crontab –lno crontab$

データベースのI/O

データが無くなってたのでイメージです

slow_query_log=ON (my.cnf)

処理が遅いクエリが記録されるログ

※設定しないと出ません

$ sudo tail /var/log/mysql/slow.log

# Time: 120729 4:12:19# User@Host: mysql_hoge[mysql_hoge] @ localhost []# Query_time: 4.962076 Lock_time: 0.003103 Rows_sent: 0 Rows_examined: 1use wordpress;SET timestamp=1343502739;UPDATE `hoge_2_options` SET `option_value` = 'a:469:{i:1343477047;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477054;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477055;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477070;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477074;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477086;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477088;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477090;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"

'a:469:{i:1343477047;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477054;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477055;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477070;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477074;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477086;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477088;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477090;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477091;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477094;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477119;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477120;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477143;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477147;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477149;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477168;a:1:{s:17:¥"clean_cache_event¥"¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477168;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477171;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥

'¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477168;a:1:{s:17:¥"clean_cache_event¥"a:469:{i:1343477047;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477054;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477055;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477070;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477074;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477086;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477088;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477090;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477091;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477094;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477119;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477120;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477143;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477147;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477149;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477168;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477171;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"

'a:469:{i:1343477047;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477054;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477055;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477070;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477074;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477086;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477088;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477090;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477091;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477094;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477119;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477120;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477143;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477147;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477149;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477168;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477171;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥¥";a:3:{s:8:¥"schedule¥";s:6:¥"hourly¥";s:4:¥"args¥";a:0:{}s:8:¥"interval¥";i:3600;}}}i:1343477168;a:1:{s:17:¥"clean_cache_event

ずっとつづいてる

$ sudo tail /var/log/mysql/slow.log

# Time: 120729 4:12:19# User@Host: mysql_hoge[mysql_hoge] @ localhost []# Query_time: 4.962076 Lock_time: 0.003103 Rows_sent: 0 Rows_examined: 1use wordpress;SET timestamp=1343502739;UPDATE `hoge_2_options` SET `option_value` = 'a:469:{i:1343477047;a:1:{s:17:¥"clean_cache_event¥";a:1:{s:32:¥"40cd750bba9870f18aada2478b24840a¥";

Wordpress cron 助けてください

ずっとつづいてる

cron

データベース

登録

cron

データベース

プラグインAwp_schedule_event

1.スケジュール登録

登録

cron

データベース

プラグインAwp_schedule_event

1.スケジュール登録

プラグインBwp_schedule_event

スケジュール登録

登録

cron

データベース

プラグインAwp_schedule_event

1.スケジュール登録

wp_cron.php

2.いい感じに実行

プラグインBwp_schedule_event

スケジュール登録

登録

cron

データベース

削除

cron

データベース

プラグインAwp_unschedule_event

スケジュール削除

削除

もと

$ wp plugin list --status=active

べつ

$ wp plugin install hoge –activate

wp-cli

※黒い画面

自己責任でね♪

結果(CPU使用率)

結果(データベースファイルI/O)

結果（Webmaster tools→クロール→クロールエラー）

まとめ

• WP-Cron Dashboard• google webmaster toolsのクロールエラー

レンタルサーバーの方でも…

まとめ

• 性能監視（cacti,munin）

• MySQLのログ（ slow_query_log）

• ログのグラフ化（Fluentd + GrowthForecast）

VPSやAWSを使ってる方

ご静聴ありがとうございました