Thursday, 30 August 2018

Ngnix or PHP slow http response on missing images, 502 and upstream timed out

I'm setting up a new server with Ubuntu 18.04.1 and nginx 1.14.0 Everything works fine except a test page where I set up a lot of broken links to missing images. It seems to take forever for the server to realise they are missing and respond to the http request. Some missing files give a HTTP status of 404 and some give 502. What causes these delays and 502 errors? Did I do something wrong in the nginx or php configuration?

A part of the nginx error.log:

2018/08/28 13:02:27 [error] 5979#5979: *487 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 2a02:a440:91e3:1:5856:a644:6955:3dd0, server: test.vuyk.eu, request: "GET /images/klanten/Praatmaatgroep.gif HTTP/2.0", upstream: "fastcgi://unix:/run/php/php7.2-fpm.sock", host: "test.vuyk.eu", referrer: "https://test.vuyk.eu/portfolio-2"

A line of the php7.2-fpm.log

[28-Aug-2018 13:39:59] WARNING: [pool www] child 8246, script '/var/www/vuyk.eu/webroot/index.php' (request: "GET /index.php?page=/images/klanten/JHoogeveen.gif") execution timed out (22.813907 sec), terminating

The timeline of HTTP requests and replies, that shows the requests on non-existent files and the response of the server, some give a 404 which is good, some give 502 bad gateway:

GET https://test.vuyk.eu/portfolio-2 [HTTP/2.0 200 OK 132ms]
GET https://test.vuyk.eu/templates/purity_iii/css/bootstrap.css [HTTP/2.0 200 OK 40ms]
GET https://test.vuyk.eu/templates/system/css/system.css [HTTP/2.0 200 OK 50ms]
GET https://test.vuyk.eu/templates/purity_iii/css/template.css [HTTP/2.0 200 OK 50ms]
GET https://test.vuyk.eu/templates/purity_iii/fonts/font-awesome/css/font-awesome.min.css [HTTP/2.0 200 OK 50ms]
GET https://test.vuyk.eu/templates/purity_iii/css/layouts/corporate.css [HTTP/2.0 200 OK 50ms]
GET https://test.vuyk.eu/media/jui/js/jquery.min.js?48b6d1b3850bca834b403c58682b4579 [HTTP/2.0 200 OK 60ms]
GET https://test.vuyk.eu/media/jui/js/jquery-noconflict.js?48b6d1b3850bca834b403c58682b4579 [HTTP/2.0 200 OK 60ms]
GET https://test.vuyk.eu/media/jui/js/jquery-migrate.min.js?48b6d1b3850bca834b403c58682b4579 [HTTP/2.0 200 OK 60ms]
GET https://test.vuyk.eu/media/system/js/caption.js?48b6d1b3850bca834b403c58682b4579 [HTTP/2.0 200 OK 70ms]
GET https://test.vuyk.eu/plugins/system/t3/base-bs3/bootstrap/js/bootstrap.js? 8b6d1b3850bca834b403c58682b4579 [HTTP/2.0 200 OK 80ms]
GET https://test.vuyk.eu/plugins/system/t3/base-bs3/js/jquery.tap.min.js [HTTP/2.0 200 OK 80ms]
GET https://test.vuyk.eu/plugins/system/t3/base-bs3/js/script.js [HTTP/2.0 200 OK 70ms]
GET https://test.vuyk.eu/plugins/system/t3/base-bs3/js/menu.js [HTTP/2.0 200 OK 70ms]
GET https://test.vuyk.eu/templates/purity_iii/js/script.js [HTTP/2.0 200 OK 70ms]
GET https://test.vuyk.eu/plugins/system/t3/base-bs3/js/nav-collapse.js [HTTP/2.0 200 OK 70ms]
GET https://test.vuyk.eu/templates/purity_iii/css/custom-vuyk.css [HTTP/2.0 200 OK 70ms]
GET https://test.vuyk.eu/images/klanten1/schipper2.gif [HTTP/2.0 502 Bad Gateway 23988ms]
GET https://test.vuyk.eu/images/klanten1/Kuiper.gif [HTTP/2.0 502 Bad Gateway 24038ms]
GET https://test.vuyk.eu/images/klanten1/WindMatch.gif [HTTP/2.0 502 Bad Gateway 24008ms]
GET https://test.vuyk.eu/images/klanten1/Tuinland.gif [HTTP/2.0 502 Bad Gateway 24018ms]
GET https://test.vuyk.eu/images/klanten1/Wezenberg.gif [HTTP/2.0 502 Bad Gateway 24038ms]
GET https://test.vuyk.eu/images/klanten1/Morgenster.gif [HTTP/2.0 502 Bad Gateway 23998ms]
GET https://test.vuyk.eu/images/klanten1/Harrie-boerhof.gif [HTTP/2.0 502 Bad Gateway 24028ms]
GET https://test.vuyk.eu/images/klanten1/Lococensus.gif [HTTP/2.0 502 Bad Gateway 23998ms]
GET https://test.vuyk.eu/images/klanten1/JHoogeveen.gif [HTTP/2.0 502 Bad Gateway 23978ms]
GET https://test.vuyk.eu/images/klanten1/DeDeur.gif [HTTP/2.0 502 Bad Gateway 23988ms]
GET https://test.vuyk.eu/images/klanten1/Runhaar.gif [HTTP/2.0 502 Bad Gateway 23958ms]
GET https://test.vuyk.eu/images/klanten1/Schunselaar-schildersbedrijf.gif [HTTP/2.0 502 Bad Gateway 23948ms]
GET https://test.vuyk.eu/images/klanten1/Capelle.gif [HTTP/2.0 502 Bad Gateway 23958ms]
GET https://test.vuyk.eu/images/klanten1/Distantlake.gif [HTTP/2.0 502 Bad Gateway 24038ms]
GET https://test.vuyk.eu/images/klanten1/Eikenaar.gif [HTTP/2.0 502 Bad Gateway 24018ms]
GET https://test.vuyk.eu/images/klanten1/FFWD.gif [HTTP/2.0 404 Not Found 26274ms]
GET https://test.vuyk.eu/images/klanten1/Veltec.gif [HTTP/2.0 404 Not Found 26791ms]
GET https://test.vuyk.eu/images/klanten1/Heutink.gif [HTTP/2.0 404 Not Found 26811ms]
GET https://test.vuyk.eu/images/klanten1/Lindeboom.gif [HTTP/2.0 404 Not Found 26777ms]
GET https://test.vuyk.eu/images/klanten1/aataxi.gif [HTTP/2.0 404 Not Found 26828ms]
GET https://test.vuyk.eu/images/klanten1/Aewind.gif [HTTP/2.0 404 Not Found 26811ms]
GET https://test.vuyk.eu/images/klanten1/Praatmaatgroep.gif [HTTP/2.0 404 Not Found 26800ms]
GET https://test.vuyk.eu/media/system/css/system.css [HTTP/2.0 200 OK 20ms]
JQMIGRATE: Migrate is installed, version 1.4.1 jquery-migrate.min.js:2:542
GET https://test.vuyk.eu/images/logo.gif [HTTP/2.0 200 OK 20ms]
GET https://test.vuyk.eu/images/reclame-en-communicatie.gif [HTTP/2.0 200 OK 20ms]
GET https://test.vuyk.eu/fonts/opensans-regular-webfont.woff [HTTP/2.0 200 OK 40ms]
GET https://test.vuyk.eu/templates/purity_iii/fonts/font-awesome/fonts/fontawesome-webfont.woff2?v=4.7.0 [HTTP/2.0 200 OK 70ms]

The nginx server configuration:

server {
        listen 443 ssl http2;
        listen [::]:443 ssl http2;
        ssl_certificate /etc/letsencrypt/live/test.vuyk.eu/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/test.vuyk.eu/privkey.pem;
        include snippets/ssl-params.conf;

        server_name test.vuyk.eu;
        root /var/www/vuyk.eu/webroot;
        index index.php index.html index.htm ;

        location / {
            try_files $uri $uri/ /index.php?$args;
        }

        location ~ \.php$ {
            include fastcgi.conf;
            fastcgi_pass unix:/run/php/php7.2-fpm.sock;
        }
}

nginx.conf

user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
    worker_connections 2048;
    multi_accept on;
}

http {

    ##
    # Basic Settings
    ##

    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    #   keepalive_timeout 65;
    types_hash_max_size 2048;
    # server_tokens off;

    # server_names_hash_bucket_size 64;
    # server_name_in_redirect off;

    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    ##
    # SSL Settings
    ##

    ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
    ssl_prefer_server_ciphers on;

    ##
    # Logging Settings
    ##

    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;

    ##
    # Gzip Settings
    ##

    gzip             on;
    gzip_comp_level  2;
    gzip_min_length  1000;
    gzip_proxied     expired no-cache no-store private auth;
    gzip_types       text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

    ##
    # Virtual Host Configs
    ##

    include /etc/nginx/conf.d/*.conf;
    include /etc/nginx/sites-enabled/*;
    client_body_buffer_size 10K;
    client_header_buffer_size 1k;
    client_max_body_size 100m;
    large_client_header_buffers 4 8k;
    fastcgi_buffers 16 16k;
    fastcgi_buffer_size 32k;
    fastcgi_read_timeout 500; #gateway probleem
    client_body_timeout 12;
    client_header_timeout 12;
    keepalive_timeout 25;
    send_timeout 10;
}

fastcgi.conf

fastcgi_param  PATH_TRANSLATED    $document_root$fastcgi_path_info;
fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
fastcgi_param  PATH_INFO          $fastcgi_path_info;
fastcgi_param  QUERY_STRING       $query_string;
fastcgi_param  REQUEST_METHOD     $request_method;
fastcgi_param  CONTENT_TYPE       $content_type;
fastcgi_param  CONTENT_LENGTH     $content_length;

fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
fastcgi_param  REQUEST_URI        $request_uri;
fastcgi_param  DOCUMENT_URI       $document_uri;
fastcgi_param  DOCUMENT_ROOT      $document_root;
fastcgi_param  SERVER_PROTOCOL    $server_protocol;
fastcgi_param  REQUEST_SCHEME     $scheme;
fastcgi_param  HTTPS              $https if_not_empty;

fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
fastcgi_param  SERVER_SOFTWARE    nginx/$nginx_version;

fastcgi_param  REMOTE_ADDR        $remote_addr;
fastcgi_param  REMOTE_PORT        $remote_port;
fastcgi_param  SERVER_ADDR        $server_addr;
fastcgi_param  SERVER_PORT        $server_port;
fastcgi_param  SERVER_NAME        $server_name;

# PHP only, required if PHP was built with --enable-force-cgi-redirect
fastcgi_param  REDIRECT_STATUS    200;

php.ini

[PHP]

engine = On
short_open_tag = Off
precision = 14
output_buffering = 4096
zlib.output_compression = Off
implicit_flush = Off
unserialize_callback_func =
serialize_precision = -1
disable_functions = pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,
disable_classes =
zend.enable_gc = On
expose_php = Off
max_execution_time = 30
max_input_time = 60
memory_limit = 128M
error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT
display_errors = Off
display_startup_errors = Off
log_errors = On
log_errors_max_len = 1024
ignore_repeated_errors = Off
ignore_repeated_source = Off
report_memleaks = On
html_errors = On
variables_order = "GPCS"
request_order = "GP"
register_argc_argv = Off
auto_globals_jit = On
post_max_size = 28M
auto_prepend_file =
auto_append_file =
default_mimetype = "text/html"
default_charset = "UTF-8"
doc_root =
user_dir =
enable_dl = Off
cgi.fix_pathinfo=1
file_uploads = On
upload_max_filesize = 20M
max_file_uploads = 20
allow_url_fopen = On
allow_url_include = Off
default_socket_timeout = 60
cli_server.color = On
date.timezone = "Europe/Amsterdam"

[Pdo_mysql]
pdo_mysql.cache_size = 2000
pdo_mysql.default_socket=
[mail function]
SMTP = localhost
smtp_port = 25
mail.add_x_header = Off

[ODBC]
odbc.allow_persistent = On
odbc.check_persistent = On
odbc.max_persistent = -1
odbc.max_links = -1
odbc.defaultlrl = 4096
odbc.defaultbinmode = 1

[Interbase]
ibase.allow_persistent = 1
ibase.max_persistent = -1
ibase.max_links = -1
ibase.timestampformat = "%Y-%m-%d %H:%M:%S"
ibase.dateformat = "%Y-%m-%d"
ibase.timeformat = "%H:%M:%S"

[MySQLi]
mysqli.max_persistent = -1
mysqli.allow_persistent = On
mysqli.max_links = -1
mysqli.cache_size = 2000
mysqli.default_port = 3306
mysqli.default_socket =
mysqli.default_host =
mysqli.default_user =
mysqli.default_pw =
mysqli.reconnect = Off
[mysqlnd]
mysqlnd.collect_statistics = On
mysqlnd.collect_memory_statistics = Off

[PostgreSQL]
pgsql.allow_persistent = On
pgsql.auto_reset_persistent = Off
pgsql.max_persistent = -1
pgsql.max_links = -1
pgsql.ignore_notice = 0
pgsql.log_notice = 0

[bcmath]
bcmath.scale = 0

[Session]
session.save_handler = files
session.use_strict_mode = 0
session.use_cookies = 1
session.use_only_cookies = 1
session.name = PHPSESSID
session.auto_start = 0
session.cookie_lifetime = 0
session.cookie_path = /
session.cookie_domain =
session.cookie_httponly =
session.serialize_handler = php
session.gc_probability = 0
session.gc_divisor = 1000
session.gc_maxlifetime = 1440
session.referer_check =
session.cache_limiter = nocache
session.cache_expire = 180
session.use_trans_sid = 0
session.sid_length = 26
session.trans_sid_tags = "a=href,area=href,frame=src,form="
session.sid_bits_per_character = 5

[Assertion]
zend.assertions = -1

[mbstring]
mbstring.func_overload = 0

[Tidy]
tidy.clean_output = Off

[soap]
soap.wsdl_cache_enabled=1
soap.wsdl_cache_dir="/tmp"
soap.wsdl_cache_ttl=86400
soap.wsdl_cache_limit = 5
[ldap]
ldap.max_links = -1



from Ngnix or PHP slow http response on missing images, 502 and upstream timed out

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