WordPress 5.7にアップグレードでエラー

WordPress 5.7へのアップグレードが可能だったのでいつも通り管理画面から実行しました。しかし、「著名がない」といったようなメッセージが一瞬表示され「502 Bad Gateway」のメッセージになりました。

WordPress 5.7にアップグレードでエラー

最近、管理画面からプラグインを最新版へバージョンアップする際にも「502 Bad Gateway」が発生し、更新がうまくいかないことが度々ありました。
そのたびにサーバへログインして、プラグインをいったん削除し、手動で再ダウンロードしてインストールしていました。

今回はWordpress本体の更新でエラーです。
発生したのは2021.03.10 18:11:08です。
エラー発生後はホームページも管理画面もアクセスできません。

/var/log/php-fpm/error.log

[10-Mar-2021 18:11:08] WARNING: [pool www] child 168469 exited on signal 11 (SIGSEGV) after 89592.268460 seconds from start
[10-Mar-2021 18:11:08] NOTICE: [pool www] child 177732 started
[10-Mar-2021 18:11:08] WARNING: [pool www] child 168510 said into stderr: "NOTICE: Access to the script '/var/www/sites/wordpress/wp-admin/images/about-badge.svg' has been denied (see security.limit_extensions)"
[10-Mar-2021 18:11:08] WARNING: [pool www] child 168470 said into stderr: "NOTICE: Access to the script '/var/www/sites/wordpress/wp-admin/images/about-color-palette.svg' has been denied (see security.limit_extensions)"
[10-Mar-2021 18:11:08] WARNING: [pool www] child 168472 said into stderr: "NOTICE: Access to the script '/var/www/sites/wordpress/wp-admin/images/about-header-brushes.svg' has been denied (see security.limit_extensions)"
[10-Mar-2021 18:11:09] WARNING: [pool www] child 168525 exited on signal 11 (SIGSEGV) after 88047.188762 seconds from start
[10-Mar-2021 18:11:09] NOTICE: [pool www] child 177733 started
[10-Mar-2021 18:11:09] WARNING: [pool www] child 177430 exited on signal 11 (SIGSEGV) after 1842.744925 seconds from start
[10-Mar-2021 18:11:09] NOTICE: [pool www] child 177734 started
[10-Mar-2021 18:11:09] WARNING: [pool www] child 168489 said into stderr: "NOTICE: Access to the script '/var/www/sites/wordpress/wp-admin/images/about-badge.svg' has been denied (see security.limit_extensions)"
[10-Mar-2021 18:11:09] WARNING: [pool www] child 168494 said into stderr: "NOTICE: Access to the script '/var/www/sites/wordpress/wp-admin/images/about-color-palette.svg' has been denied (see security.limit_extensions)"
[10-Mar-2021 18:11:19] WARNING: [pool www] child 168471 said into stderr: "NOTICE: PHP message: PHP Fatal error:  Allowed memory size of 268435456 bytes exhausted (tried to allocate 24403379616 bytes) in /home/wordpress/wp-includes/load.php on line 1422"
[10-Mar-2021 18:11:19] WARNING: [pool www] child 168521 said into stderr: "NOTICE: PHP message: PHP Fatal error:  Allowed memory size of 268435456 bytes exhausted (tried to allocate 8589952920 bytes) in /home/wordpress/wp-includes/load.php on line 1422"
[10-Mar-2021 18:11:22] WARNING: [pool www] child 177732 exited on signal 11 (SIGSEGV) after 14.407059 seconds from start
[10-Mar-2021 18:11:22] NOTICE: [pool www] child 177738 started
[10-Mar-2021 18:11:43] WARNING: [pool www] child 168484 said into stderr: "NOTICE: PHP message: PHP Fatal error:  Allowed memory size of 268435456 bytes exhausted (tried to allocate 8589928120 bytes) in /home/wordpress/wp-includes/load.php on line 1422"
[10-Mar-2021 18:11:56] WARNING: [pool www] child 168821 exited on signal 11 (SIGSEGV) after 84388.759148 seconds from start
[10-Mar-2021 18:11:56] NOTICE: [pool www] child 177743 started

/var/log/nginx/error.log

2021/03/10 18:11:08 [error] 1098#1098: *245845 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 220.211.137.153, server: phoenixknight.jp, request: "GET /wp-admin/load-scripts.php?c=0&load%5Bchunk_0%5D=hoverIntent&ver=5.7 HTTP/2.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm-www.sock:", host: "phoenixknight.jp", referrer: "https://phoenixknight.jp/wp-admin/about.php?updated"
2021/03/10 18:11:08 [error] 1098#1098: *245845 FastCGI sent in stderr: "Access to the script '/var/www/sites/wordpress/wp-admin/images/about-badge.svg' has been denied (see security.limit_extensions)" while reading response header from upstream, client: 220.211.137.153, server: phoenixknight.jp, request: "GET /wp-admin/images/about-badge.svg HTTP/2.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm-www.sock:", host: "phoenixknight.jp", referrer: "https://phoenixknight.jp/wp-admin/about.php?updated"
2021/03/10 18:11:08 [error] 1098#1098: *245845 FastCGI sent in stderr: "Access to the script '/var/www/sites/wordpress/wp-admin/images/about-color-palette.svg' has been denied (see security.limit_extensions)" while reading response header from upstream, client: 220.211.137.153, server: phoenixknight.jp, request: "GET /wp-admin/images/about-color-palette.svg HTTP/2.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm-www.sock:", host: "phoenixknight.jp", referrer: "https://phoenixknight.jp/wp-admin/about.php?updated"
2021/03/10 18:11:08 [error] 1098#1098: *245845 FastCGI sent in stderr: "Access to the script '/var/www/sites/wordpress/wp-admin/images/about-header-brushes.svg' has been denied (see security.limit_extensions)" while reading response header from upstream, client: 220.211.137.153, server: phoenixknight.jp, request: "GET /wp-admin/images/about-header-brushes.svg HTTP/2.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm-www.sock:", host: "phoenixknight.jp", referrer: "https://phoenixknight.jp/wp-admin/load-styles.php?c=0&dir=ltr&load%5Bchunk_0%5D=dashicons,admin-bar,wp-components,common,forms,admin-menu,dashboard,list-tables,edit,revisions,media,themes,about,nav-menus,wp-p&load%5Bchunk_1%5D=ointer,widgets,site-icon,l10n,buttons,wp-auth-check,wp-color-picker,media-views&ver=5.7"
2021/03/10 18:11:09 [error] 1098#1098: *245845 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 220.211.137.153, server: phoenixknight.jp, request: "GET /wp-admin/load-scripts.php?c=0&load%5Bchunk_0%5D=hoverIntent&ver=5.7 HTTP/2.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm-www.sock:", host: "phoenixknight.jp", referrer: "https://phoenixknight.jp/wp-admin/about.php"
2021/03/10 18:11:09 [error] 1098#1098: *245845 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 220.211.137.153, server: phoenixknight.jp, request: "POST /wp-admin/admin-ajax.php HTTP/2.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm-www.sock:", host: "phoenixknight.jp", referrer: "https://phoenixknight.jp/wp-admin/about.php"
2021/03/10 18:11:09 [error] 1098#1098: *245845 FastCGI sent in stderr: "Access to the script '/var/www/sites/wordpress/wp-admin/images/about-badge.svg' has been denied (see security.limit_extensions)" while reading response header from upstream, client: 220.211.137.153, server: phoenixknight.jp, request: "GET /wp-admin/images/about-badge.svg HTTP/2.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm-www.sock:", host: "phoenixknight.jp", referrer: "https://phoenixknight.jp/wp-admin/about.php"
2021/03/10 18:11:09 [error] 1098#1098: *245845 FastCGI sent in stderr: "Access to the script '/var/www/sites/wordpress/wp-admin/images/about-color-palette.svg' has been denied (see security.limit_extensions)" while reading response header from upstream, client: 220.211.137.153, server: phoenixknight.jp, request: "GET /wp-admin/images/about-color-palette.svg HTTP/2.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm-www.sock:", host: "phoenixknight.jp", referrer: "https://phoenixknight.jp/wp-admin/about.php"
2021/03/10 18:11:19 [error] 1098#1098: *245845 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Allowed memory size of 268435456 bytes exhausted (tried to allocate 8589952920 bytes) in /home/wordpress/wp-includes/load.php on line 1422" while reading response header from upstream, client: 220.211.137.153, server: phoenixknight.jp, request: "GET /wp-admin/plugins.php HTTP/2.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm-www.sock:", host: "phoenixknight.jp", referrer: "https://phoenixknight.jp/wp-admin/about.php"
2021/03/10 18:11:22 [error] 1098#1098: *245845 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 220.211.137.153, server: phoenixknight.jp, request: "GET /wp-admin/about.php HTTP/2.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm-www.sock:", host: "phoenixknight.jp", referrer: "https://phoenixknight.jp/wp-admin/about.php?updated"
2021/03/10 18:11:43 [error] 1098#1098: *245845 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Allowed memory size of 268435456 bytes exhausted (tried to allocate 8589928120 bytes) in /home/wordpress/wp-includes/load.php on line 1422" while reading response header from upstream, client: 220.211.137.153, server: phoenixknight.jp, request: "POST /wp-admin/admin-ajax.php HTTP/2.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm-www.sock:", host: "phoenixknight.jp", referrer: "https://phoenixknight.jp/wp-admin/post.php?post=15938&action=edit"
2021/03/10 18:11:56 [error] 1098#1098: *246405 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 27.127.136.165, server: phoenixknight.jp, request: "GET /try-the-dtcp-ip-media-player-on-windows-10/ HTTP/2.0", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm-www.sock:", host: "phoenixknight.jp", referrer: "https://www.google.com/"

手動でWordpress 5.7へ更新

管理画面にアクセスできずWordpress本体が壊れた状態です。
バックアップはとっていなかったので、最新版へ手動でアップグレードすることにしました。
以下はさくらインターネットのVPSにrootユーザでリモートログインして作業しています。

最新版のWordpressを入手

WordPressを入手にあるfa-downloadWordPress 5.7をダウンロードを右クリックしてリンクのアドレスをコピーします。
今回はtar.gz版をダウンロードしたかったので「.tar.gzをダウンロード」を右クリックしてリンクのアドレスをコピーしました。

以下のコマンド入力をして、Wordpress 5.7をダウンロードします。

$ cd /root
$ curl -OL https://ja.wordpress.org/latest-ja.tar.gz

wp-includesとwp-adminディレクトリを削除

現在、サーバー上にある「wp-includes」と「wp-admin」を削除します。

$ cd /var/www/sites/wordpress
$ rm -rf wp-includes wp-admin

wp-includesとwp-adminディレクトリを配置

新しいwp-includesとwp-adminディレクトリを配置します。
ダウンロードしたlatest-ja.tar.gzファイルから抽出します。

$ cd /root
$ tar zxvf latest-ja.tar.gz wordpress/wp-includes -C /var/www/sites/wordpress
$ tar zxvf latest-ja.tar.gz wordpress/wp-admin -C /var/www/sites/wordpress

wp-contentディレクトリ内を上書き

新しいwp-contentディレクトリ内のディレクトリとファイルで既存のwp-contentディレクトリ内を上書きします。
あくまでも新しいファイルでの上書きです。wp-contentディレクトリを削除しないでください。

$ tar zxvf latest-ja.tar.gz wordpress/wp-content -C /var/www/sites/wordpress

wordpress直下のファイルを上書き

新しいwordpressディレクトリ内のファイルで既存のwordpress直下のファイルを上書きします。

$ tar zxvf latest-ja.tar.gz wordpress/*.php -C /var/www/sites/wordpress
$ tar zxvf latest-ja.tar.gz wordpress/lisence.txt -C /var/www/sites/wordpress
$ tar zxvf latest-ja.tar.gz wordpress/readme.html -C /var/www/sites/wordpress

アクセス権の変更

tarで展開したファイルのオーナーはシステムに存在しないUID/GIDになっていると思いますので変更します。

$ cd /var/www/sites
$ chown -R nginx:nginx wordpress

以上で、Wordpress 5.7へ更新できています。
管理画面にアクセスして必要であればデータベースの更新が行われます。