问题：
库伯内特斯Nginx入口文件上传返回502
赫连晋
我正试图通过nginx入口从客户端上传文件。在收到413响应后，我在入口上设置了以下注释；
Annotations: nginx.ingress.kubernetes.io/body-size: 1024m
nginx.ingress.kubernetes.io/client-body-buffer-size: 50m
nginx.ingress.kubernetes.io/client-max-body-size: 50m
nginx.ingress.kubernetes.io/proxy-body-size: 1024m
nginx.ingress.kubernetes.io/proxy-buffer-size: 32k
nginx.ingress.kubernetes.io/proxy-buffers-number: 8
客户端是一个Angular应用程序。它在请求正文中发送文件的bas64字符串。我尝试过上传一些KB的图像，所以我绝对没有达到这些限制。我是库伯内特斯的新手。我是否需要重新启动入口以使这些注释生效？
我也尝试过创建一个ConfigMap；
apiVersion: v1
kind: ConfigMap
metadata:
name: app-ingress-configuration
namespace: development
labels:
app.kubernetes.io/name: [name of ingress]
app.kubernetes.io/part-of: [name of ingress]
data:
proxy-connect-timeout: "50"
proxy-read-timeout: "120"
proxy-send-timeout: "120"
body-size: "1024m"
client-body-buffer-size: "50m"
client-max-body-size: "50m"
proxy-body-size: "1024m"
proxy-buffers: "8 32k"
proxy-buffer-size: "32k"
仍然得到502。
不知道如何通过kubectl访问nginx.conf，它似乎从文档如果我更新这个配置映射的设置在nginx无论如何改变。
任何帮助赞赏。
使现代化
nginx.conf
# Configuration checksum: 1961171210939107273
# setup custom paths that do not require root access
pid /tmp/nginx.pid;
daemon off;
worker_processes 2;
worker_rlimit_nofile 523264;
worker_shutdown_timeout 240s ;
events {
multi_accept on;
worker_connections 16384;
use epoll;
}
http {
client_max_body_size 100M;
lua_package_path "/etc/nginx/lua/?.lua;;";
lua_shared_dict balancer_ewma 10M;
lua_shared_dict balancer_ewma_last_touched_at 10M;
lua_shared_dict balancer_ewma_locks 1M;
lua_shared_dict certificate_data 20M;
lua_shared_dict certificate_servers 5M;
lua_shared_dict configuration_data 20M;
init_by_lua_block {
collectgarbage("collect")
-- init modules
local ok, res
ok, res = pcall(require, "lua_ingress")
if not ok then
error("require failed: " .. tostring(res))
else
lua_ingress = res
lua_ingress.set_config({
use_forwarded_headers = false,
use_proxy_protocol = false,
is_ssl_passthrough_enabled = false,
http_redirect_code = 308,
listen_ports = { ssl_proxy = "442", https = "443" },
hsts = true,
hsts_max_age = 15724800,
hsts_include_subdomains = true,
hsts_preload = false,
})
end
ok, res = pcall(require, "configuration")
if not ok then
error("require failed: " .. tostring(res))
else
configuration = res
end
ok, res = pcall(require, "balancer")
if not ok then
error("require failed: " .. tostring(res))
else
balancer = res
end
ok, res = pcall(require, "monitor")
if not ok then
error("require failed: " .. tostring(res))
else
monitor = res
end
ok, res = pcall(require, "certificate")
if not ok then
error("require failed: " .. tostring(res))
else
certificate = res
end
ok, res = pcall(require, "plugins")
if not ok then
error("require failed: " .. tostring(res))
else
plugins = res
end
-- load all plugins that'll be used here
plugins.init({})
}
init_worker_by_lua_block {
lua_ingress.init_worker()
balancer.init_worker()
monitor.init_worker()
plugins.run()
}
geoip_country /etc/nginx/geoip/GeoIP.dat;
geoip_city /etc/nginx/geoip/GeoLiteCity.dat;
geoip_org /etc/nginx/geoip/GeoIPASNum.dat;
geoip_proxy_recursive on;
aio threads;
aio_write on;
tcp_nopush on;
tcp_nodelay on;
log_subrequest on;
reset_timedout_connection on;
keepalive_timeout 75s;
keepalive_requests 100;
client_body_temp_path /tmp/client-body;
fastcgi_temp_path /tmp/fastcgi-temp;
proxy_temp_path /tmp/proxy-temp;
ajp_temp_path /tmp/ajp-temp;
client_header_buffer_size 1M;
client_header_timeout 60s;
large_client_header_buffers 4 5M;
client_body_buffer_size 1M;
client_body_timeout 60s;
http2_max_field_size 1M;
http2_max_header_size 5M;
http2_max_requests 1000;
http2_max_concurrent_streams 128;
types_hash_max_size 2048;
server_names_hash_max_size 1024;
server_names_hash_bucket_size 64;
map_hash_bucket_size 64;
proxy_headers_hash_max_size 512;
proxy_headers_hash_bucket_size 64;
variables_hash_bucket_size 256;
variables_hash_max_size 2048;
underscores_in_headers off;
ignore_invalid_headers on;
limit_req_status 503;
limit_conn_status 503;
include /etc/nginx/mime.types;
default_type text/html;
gzip on;
gzip_comp_level 5;
gzip_http_version 1.1;
gzip_min_length 256;
gzip_types application/atom+xml application/javascript application/x-javascript application/json application/rss+xml application/vnd.ms-fontobject application/x-font-ttf application/x-web-app-manifest+json application/xhtml+xml application/xml font/opentype image/svg+xml image/x-icon text/css text/javascript text/plain text/x-component;
gzip_proxied any;
gzip_vary on;
# Custom headers for response
server_tokens on;
# disable warnings
uninitialized_variable_warn off;
# Additional available variables:
# $namespace
# $ingress_name
# $service_name
# $service_port
log_format upstreaminfo '$remote_addr - $remote_user [$time_local] "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent" $request_length $request_time [$proxy_upstream_name] [$proxy_alternative_upstream_name] $upstream_addr $upstream_response_length $upstream_response_time $upstream_status $req_id';
map $request_uri $loggable {
default 1;
}
access_log /var/log/nginx/access.log upstreaminfo if=$loggable;
error_log /var/log/nginx/error.log notice;
resolver 10.245.0.10 valid=30s;
# See https://www.nginx.com/blog/websocket-nginx
map $http_upgrade $connection_upgrade {
default upgrade;
# See http://nginx.org/en/docs/http/ngx_http_upstream_module.html#keepalive
'' '';
}
# Reverse proxies can detect if a client provides a X-Request-ID header, and pass it on to the backend server.
# If no such header is provided, it can provide a random value.
map $http_x_request_id $req_id {
default $http_x_request_id;
"" $request_id;
}
# Create a variable that contains the literal $ character.
# This works because the geo module will not resolve variables.
geo $literal_dollar {
default "$";
}
server_name_in_redirect off;
port_in_redirect off;
ssl_protocols TLSv1.2;
ssl_early_data off;
# turn on session caching to drastically improve performance
ssl_session_cache builtin:1000 shared:SSL:10m;
ssl_session_timeout 10m;
# allow configuring ssl session tickets
ssl_session_tickets on;
# slightly reduce the time-to-first-byte
ssl_buffer_size 4k;
# allow configuring custom ssl ciphers
ssl_ciphers '';
ssl_prefer_server_ciphers on;
ssl_ecdh_curve auto;
# PEM sha: ---
ssl_certificate /etc/ingress-controller/ssl/default-fake-certificate.pem;
ssl_certificate_key /etc/ingress-controller/ssl/default-fake-certificate.pem;
proxy_ssl_session_reuse on;
upstream upstream_balancer {
### Attention!!!
#
# We no longer create "upstream" section for every backend.
# Backends are handled dynamically using Lua. If you would like to debug
# and see what backends ingress-nginx has in its memory you can
# install our kubectl plugin https://kubernetes.github.io/ingress-nginx/kubectl-plugin.
# Once you have the plugin you can use "kubectl ingress-nginx backends" command to
# inspect current backends.
#
###
server 0.0.0.1; # placeholder
balancer_by_lua_block {
balancer.balance()
}
keepalive 32;
keepalive_timeout 60s;
keepalive_requests 100;
}
# Cache for internal auth checks
proxy_cache_path /tmp/nginx-cache-auth levels=1:2 keys_zone=auth_cache:10m max_size=128m inactive=30m use_temp_path=off;
# Global filters
## start server _
server {
server_name _ ;
listen 80 default_server reuseport backlog=511 ;
listen [::]:80 default_server reuseport backlog=511 ;
listen 443 default_server reuseport backlog=511 ssl http2 ;
listen [::]:443 default_server reuseport backlog=511 ssl http2 ;
set $proxy_upstream_name "-";
ssl_certificate_by_lua_block {
certificate.call()
}
location / {
set $namespace "";
set $ingress_name "";
set $service_name "";
set $service_port "";
set $location_path "/";
rewrite_by_lua_block {
lua_ingress.rewrite({
force_ssl_redirect = false,
ssl_redirect = false,
force_no_ssl_redirect = false,
use_port_in_redirects = false,
})
balancer.rewrite()
plugins.run()
}
# be careful with `access_by_lua_block` and `satisfy any` directives as satisfy any
# will always succeed when there's `access_by_lua_block` that does not have any lua code doing `ngx.exit(ngx.DECLINED)`
# other authentication method such as basic auth or external auth useless - all requests will be allowed.
#access_by_lua_block {
#}
header_filter_by_lua_block {
lua_ingress.header()
plugins.run()
}
body_filter_by_lua_block {
}
log_by_lua_block {
balancer.log()
monitor.call()
plugins.run()
}
access_log off;
port_in_redirect off;
set $balancer_ewma_score -1;
set $proxy_upstream_name "upstream-default-backend";
set $proxy_host $proxy_upstream_name;
set $pass_access_scheme $scheme;
set $pass_server_port $server_port;
set $best_http_host $http_host;
set $pass_port $pass_server_port;
set $proxy_alternative_upstream_name "";
client_max_body_size 1m;
proxy_set_header Host $best_http_host;
# Pass the extracted client certificate to the backend
# Allow websocket connections
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
proxy_set_header X-Request-ID $req_id;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Forwarded-Host $best_http_host;
proxy_set_header X-Forwarded-Port $pass_port;
proxy_set_header X-Forwarded-Proto $pass_access_scheme;
proxy_set_header X-Scheme $pass_access_scheme;
# Pass the original X-Forwarded-For
proxy_set_header X-Original-Forwarded-For $http_x_forwarded_for;
# mitigate HTTPoxy Vulnerability
# https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx/
proxy_set_header Proxy "";
# Custom headers to proxied server
proxy_connect_timeout 5s;
proxy_send_timeout 60s;
proxy_read_timeout 60s;
proxy_buffering off;
proxy_buffer_size 5M;
proxy_buffers 4 5M;
proxy_max_temp_file_size 1024M;
proxy_request_buffering on;
proxy_http_version 1.1;
proxy_cookie_domain off;
proxy_cookie_path off;
# In case of errors try the next upstream server before returning an error
proxy_next_upstream error timeout;
proxy_next_upstream_timeout 0;
proxy_next_upstream_tries 3;
proxy_pass http://upstream_balancer;
proxy_redirect off;
}
# health checks in cloud providers require the use of port 80
location /healthz {
access_log off;
return 200;
}
# this is required to avoid error if nginx is being monitored
# with an external software (like sysdig)
location /nginx_status {
allow 127.0.0.1;
allow ::1;
deny all;
access_log off;
stub_status on;
}
}
## end server _
## start server dev-api
server {
server_name dev-api ;
listen 80 ;
listen [::]:80 ;
listen 443 ssl http2 ;
listen [::]:443 ssl http2 ;
set $proxy_upstream_name "-";
ssl_certificate_by_lua_block {
certificate.call()
}
location / {
set $namespace "development";
set $ingress_name "app-ingress";
set $service_name "app-api-svc";
set $service_port "80";
set $location_path "/";
rewrite_by_lua_block {
lua_ingress.rewrite({
force_ssl_redirect = false,
ssl_redirect = true,
force_no_ssl_redirect = false,
use_port_in_redirects = false,
})
balancer.rewrite()
plugins.run()
}
# be careful with `access_by_lua_block` and `satisfy any` directives as satisfy any
# will always succeed when there's `access_by_lua_block` that does not have any lua code doing `ngx.exit(ngx.DECLINED)`
# other authentication method such as basic auth or external auth useless - all requests will be allowed.
#access_by_lua_block {
#}
header_filter_by_lua_block {
lua_ingress.header()
plugins.run()
}
body_filter_by_lua_block {
}
log_by_lua_block {
balancer.log()
monitor.call()
plugins.run()
}
port_in_redirect off;
set $balancer_ewma_score -1;
set $proxy_upstream_name "development-app-api-svc-80";
set $proxy_host $proxy_upstream_name;
set $pass_access_scheme $scheme;
set $pass_server_port $server_port;
set $best_http_host $http_host;
set $pass_port $pass_server_port;
set $proxy_alternative_upstream_name "";
client_max_body_size 1024M;
client_body_buffer_size 50M;
proxy_set_header Host $best_http_host;
# Pass the extracted client certificate to the backend
# Allow websocket connections
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
proxy_set_header X-Request-ID $req_id;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Forwarded-Host $best_http_host;
proxy_set_header X-Forwarded-Port $pass_port;
proxy_set_header X-Forwarded-Proto $pass_access_scheme;
proxy_set_header X-Scheme $pass_access_scheme;
# Pass the original X-Forwarded-For
proxy_set_header X-Original-Forwarded-For $http_x_forwarded_for;
# mitigate HTTPoxy Vulnerability
# https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx/
proxy_set_header Proxy "";
# Custom headers to proxied server
proxy_connect_timeout 50s;
proxy_send_timeout 60s;
proxy_read_timeout 60s;
proxy_buffering off;
proxy_buffer_size 5M;
proxy_buffers 8 5M;
proxy_max_temp_file_size 1024M;
proxy_request_buffering on;
proxy_http_version 1.1;
proxy_cookie_domain off;
proxy_cookie_path off;
# In case of errors try the next upstream server before returning an error
proxy_next_upstream error timeout;
proxy_next_upstream_timeout 0;
proxy_next_upstream_tries 3;
proxy_pass http://upstream_balancer;
proxy_redirect off;
}
}
## end server dev-api
.......
更新2
来自kubectl日志的日志-n nginx入口控制器XXX命令
127.0.0.1--[16/Jul/2020:10:11:14 0000]"POST[入口/服务endpoint]HTTP/2.0"502 4"https：//[client-host-name]/[client-path]"Mozilla/5.0（Windows NT 10.0； Win64； x64）AppleWebKit/537.36（KHTML，像壁虎）Chrome/83.0.4103.116Safari /537.36Edg/83.0.478.58"9351 0.659[service-name-80][]10.244.1.72:8014 0.652 502 7b7bdf8a9319e88c80ba3444372daf2d
共有2个答案
喻嘉泽
您需要确保在入口控制器上设置了文件大小。Nginx会赶上设置。试试这个。有关注释的更多信息，请遵循以下内容。https://docs.nginx.com/nginx-ingress-controller/configuration/ingress-resources/advanced-configuration-with-annotations/
kind: Ingress
apiVersion: extensions/v1beta1
metadata:
name: service-api-tls-ingress
namespace: production
annotations:
kubernetes.io/ingress.class: nginx
nginx.ingress.kubernetes.io/proxy-body-size: 8m
阮疏珂
我最初的问题是nginx，但在我更改了限制后，它将请求转发给服务，但我没有检查正确的日志。所以@mWatney直接对服务/pod进行双重检查是正确的。
对其他任何人来说，我看到的问题都与经营一家公司有关。Linux alpine容器中的NET core 3.1应用程序。在应用程序中，我使用的是系统的一个版本。绘画导致Linux下运行异常的常见错误，如下所示；
系统TypeInitializationException:“Gdip”的类型初始值设定项引发异常---
解决方案是添加到dockerfile；
运行apk添加libgdiplus-dev fontconfig ttf-dejavu--update-ache--repositoryhttp://dl-3.alpinelinux.org/alpine/edge/testing/
这允许使用System.绘图。常见的Linux通过添加加载共享库libgdiplus的能力。
这里的信用：https://github.com/dotnet/dotnet-docker/issues/618#issuecomment-467619498
更持久的解决方案是消除对系统的依赖。绘画完全从应用程序中删除。谢谢@mWatney的帮助，你让我走上了正确的道路。
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