私は CentOS 6 サーバーを持っていますが、ここ数週間、動作がおかしくなっています。ネットワークをトレースし、設定を調整し、多くの賢い人に尋ねてみました (この質問で詳細を参照してください:CentOS VM で接続が閉じられています。最適なトラブルシューティング方法を教えてください。）
この問題は過去 3 ～ 4 日間発生していなかったため、調整によって変化が生じたのではないかと確信し始めていました。しかし、今度は 1 時間以内に 2 回発生しました。ログを調べ始めました。そして、次のことに気付きました/var/log/nginx/access.log。
:
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
34.78.120.99 - - [13/Aug/2021:15:18:34 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
:
...そして、他にもたくさんあります！
これは、私がこの問題を目にした 2 回とも発生しました。これが問題ないかどうか、または問題がある場合、これをブロックする最善の方法は何かご存じの方はいらっしゃいますか?
ありがとう！
/ジョン
編集
提案されたとおりに報告し、Nginx でその IP アドレスをブロックしました。
それで今日、もう一度確認してみたところ、今度は別の IP からの同様のリクエストが多数ありました。
104.155.101.3 - - [18/Aug/2021:13:54:36 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:02:45 +0200] "GET / HTTP/1.1" 200 26314 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:02:45 +0200] "GET / HTTP/1.1" 200 26313 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:02:46 +0200] "GET / HTTP/1.1" 200 26348 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:02:46 +0200] "GET / HTTP/1.1" 200 26325 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:02:46 +0200] "GET / HTTP/1.1" 200 26280 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:02:48 +0200] "GET / HTTP/1.1" 200 26325 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:02:49 +0200] "GET / HTTP/1.1" 200 26280 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:02:49 +0200] "GET / HTTP/1.1" 200 26299 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:06:25 +0200] "GET / HTTP/1.1" 200 26298 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:06:25 +0200] "GET / HTTP/1.1" 200 26349 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:06:27 +0200] "GET / HTTP/1.1" 200 2379 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:06:27 +0200] "GET / HTTP/1.1" 200 26279 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:06:28 +0200] "GET / HTTP/1.1" 200 26349 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:06:29 +0200] "GET / HTTP/1.1" 200 26318 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:06:30 +0200] "GET / HTTP/1.1" 200 26348 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:06:30 +0200] "GET / HTTP/1.1" 200 26319 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:06:32 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:06:32 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:06:32 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
104.155.101.3 - - [18/Aug/2021:16:06:32 +0200] "GET / HTTP/1.1" 499 0 "-" "python-requests/2.26.0" "-"
新しいもの（コード 200）のいくつかについては心配する必要がありますか???