NGINX进程开始采取所有的CPU核心，不会清除和释放它们。 服务器已经升级了一个月，与今天的configuration相同，只是从昨天开始。
在nginx logs和php-fpm logs都没有有用的信息。 我该如何调查这个问题以及我应该从哪里开始？ 有没有什么工具可以帮助我找出原因？
同时， top命令输出如下所示：
top - 19:14:15 up 24 days, 1:19, 1 user, load average: 6.54, 4.94, 4.59 Tasks: 507 total, 7 running, 500 sleeping, 0 stopped, 0 zombie %Cpu(s): 28.8 us, 0.7 sy, 0.0 ni, 69.8 id, 0.0 wa, 0.0 hi, 0.7 si, 0.0 st KiB Mem : 26394150+total, 17393424 free, 10442672 used, 23610540+buff/cache KiB Swap: 10239996 total, 9770156 free, 469840 used. 25128828+avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 26532 nginx 20 0 70904 27784 2056 R 100.0 0.0 3:04.93 nginx 26531 nginx 20 0 61236 18032 2048 R 100.0 0.0 2:46.87 nginx 26533 nginx 20 0 76108 32928 2052 R 100.0 0.0 6:28.67 nginx 26530 nginx 20 0 56644 13416 2048 R 99.7 0.0 2:36.53 nginx 26534 nginx 20 0 53988 10852 2036 R 99.7 0.0 2:35.19 nginx 22620 nginx 20 0 540548 52280 26016 S 15.6 0.0 0:44.84 php-fpm 22670 nginx 20 0 534472 46308 26256 S 10.6 0.0 0:42.25 php-fpm 22702 nginx 20 0 534464 44524 24600 S 9.6 0.0 0:48.06 php-fpm 26528 nginx 20 0 63560 20376 2052 S 7.3 0.0 0:14.94 nginx 22718 nginx 20 0 536248 49320 27516 S 6.6 0.0 0:42.21 php-fpm 22725 nginx 20 0 533968 46476 26984 S 6.0 0.0 0:52.16 php-fpm 22611 nginx 20 0 540692 51000 24640 S 5.6 0.0 0:45.97 php-fpm 22632 nginx 20 0 577992 90824 27048 S 5.6 0.0 0:49.12 php-fpm 22717 nginx 20 0 535236 46316 25740 S 5.3 0.0 0:46.48 php-fpm 22665 nginx 20 0 536292 47420 25620 S 4.3 0.0 0:41.54 php-fpm 22780 nginx 20 0 534728 44748 24504 S 4.3 0.0 0:43.51 php-fpm 22726 nginx 20 0 540552 53544 27420 S 3.3 0.0 0:47.28 php-fpm 26527 nginx 20 0 57560 14428 2048 S 3.3 0.0 0:09.23 nginx 22730 nginx 20 0 534976 45912 25304 S 3.0 0.0 0:46.78 php-fpm 22744 nginx 20 0 540544 50932 24808 S 3.0 0.0 0:45.64 php-fpm 22761 nginx 20 0 542832 54460 27928 S 3.0 0.0 0:52.38 php-fpm 22616 nginx 20 0 535276 45788 24788 S 2.6 0.0 0:49.04 php-fpm 22617 nginx 20 0 540748 53516 27132 S 2.6 0.0 0:42.45 php-fpm 22630 nginx 20 0 603580 114140 24844 S 2.6 0.0 0:47.50 php-fpm
NGINXconfiguration：
user nginx; worker_processes auto; worker_rlimit_nofile 30000; error_log /var/log/nginx/error.log; pid /run/nginx.pid; events { worker_connections 1024; use epoll; } http { log_format main '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; access_log /dev/null; error_log /var/log/nginx/error.log crit; sendfile on; tcp_nopush on; tcp_nodelay on; keepalive_timeout 65; types_hash_max_size 2048; client_max_body_size 300m; open_file_cache_errors on; include /etc/nginx/mime.types; default_type application/octet-stream; add_header 'Access-Control-Allow-Origin' '*'; include /etc/nginx/conf.d/*.conf; }
NGINX服务器块
server { listen 443 ssl http2; ssl on; ssl_certificate ...; ssl_certificate_key ...; server_name ...; root /...; # Enable compression, this will help if you have for instance advagg module # by serving Gzip versions of the files. gzip_static on; location = /favicon.ico { log_not_found off; access_log off; } location = /robots.txt { allow all; log_not_found off; access_log off; } # This matters if you use drush prior to 5.x # After 5.x backups are stored outside the Drupal install. #location = /backup { # deny all; #} # Very rarely should these ever be accessed outside of your lan location ~* \.(txt|log|psb|vtt|mpl|idx|smi|sub|ass|srt|ssa|sami|pjs)$ { allow 192.168.0.0/16; deny all; } #location = /user/196737/content-sound { # return 403; #} location ~ \..*/.*\.php$ { return 403; } # No no for private location ~ ^/sites/.*/private/ { return 403; } # Block access to "hidden" files and directories whose names begin with a # period. This includes directories used by version control systems such # as Subversion or Git to store control files. location ~ (^|/)\. { return 403; } location / { # This is cool because no php is touched for static content try_files $uri @rewrite; } location @rewrite { # You have 2 options here # For D7 and above: # Clean URLs are handled in drupal_environment_initialize(). rewrite ^ /index.php; # For Drupal 6 and bwlow: # Some modules enforce no slash (/) at the end of the URL # Else this rewrite block wouldn't be needed (GlobalRedirect) #rewrite ^/(.*)$ /index.php?q=$1; } location ~ \.php$ { fastcgi_split_path_info ^(.+\.php)(/.+)$; #NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini include fastcgi_params; fastcgi_read_timeout 300; fastcgi_param SCRIPT_FILENAME $request_filename; fastcgi_intercept_errors on; fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock; } # Fighting with Styles? This little gem is amazing. # This is for D6 #location ~ ^/sites/.*/files/imagecache/ { # This is for D7 and D8 location ~ ^/sites/.*/files/styles/ { try_files $uri @rewrite; } location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ { expires max; log_not_found off; } }
这是nginx 1.11.11中的一个bug。 http://nginx.org/en/CHANGES
Bugfix：nginx可能会占用CPU; 该错误在1.11.11出现。