我们有一个包含 k8s + Rancher 2(3 个节点)和外部 nginx 的环境,根据本文档,该环境仅将连接转发到 k8s 集群:https://rancher.com/docs/rancher/v2.x/en/安装/k8s-安装/
在此环境中运行的特定应用程序中,当我们执行 POST(因为此 POST 大约需要 3 到 4 分钟才能完成)时,它会在 60 秒后被中断,并显示消息“504 Gateway Time-Out”。我尝试应用特定注释来更改超时,如下所示,但无济于事:
应用入口:
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: api-loteamento-spring-hml
annotations:
nginx.ingress.kubernetes.io/proxy-connect-timeout: "3600"
nginx.ingress.kubernetes.io/proxy-read-timeout: "3600"
nginx.ingress.kubernetes.io/proxy-send-timeout: "3600"
nginx.ingress.kubernetes.io/server-snippet: "keepalive_timeout 3600s;client_body_timeout 3600s;client_header_timeout 3600s;"
labels:
run: api-loteamento-spring-hml
spec:
rules:
- host: hml-api-loteamento-sp.gruposfa.bla.bla
http:
paths:
- backend:
serviceName: api-loteamento-spring-hml
servicePort: 80
我还尝试使用以下参数创建一个全局ConfigMap,但也没有成功:
[rancher@srv-rcnode01 ssl]$ kubectl get pods -n ingress-nginx
NAME READY STATUS RESTARTS AGE
default-http-backend-67cf578fc4-lcz82 1/1 Running 1 38d
nginx-ingress-controller-7jcng 1/1 Running 11 225d
nginx-ingress-controller-8zxbf 1/1 Running 8 225d
nginx-ingress-controller-l527g 1/1 Running 8 225d
[rancher@srv-rcnode01 ssl]$ kubectl get pod nginx-ingress-controller-8zxbf -n ingress-nginx -o yaml |grep configmap
- --configmap=$(POD_NAMESPACE)/nginx-configuration
- --tcp-services-configmap=$(POD_NAMESPACE)/tcp-services
- --udp-services-configmap=$(POD_NAMESPACE)/udp-services
[rancher@srv-rcnode01 ~]$ cat global-configmap.yaml
apiVersion: v1
data:
client-body-timeout: "360"
client-header-timeout: "360"
proxy-connect-timeout: "360"
proxy-read-timeout: "360"
proxy-send-timeout: "360"
kind: ConfigMap
metadata:
name: nginx-configuration
并申请:
kubectl apply -f global-configmap.yaml
访问入口 pod 并检查 nginx.conf,我看到注释是根据应用程序块内设置的参数创建的:
[rancher@srv-rcnode01 ~]$ kubectl -n ingress-nginx exec --stdin --tty nginx-ingress-controller-8zxbf -- /bin/bash
并查看nginx.conf
keepalive_timeout 3600s;client_body_timeout 3600s;client_header_timeout 3600s;
# Custom headers to proxied server
proxy_connect_timeout 3600s;
proxy_send_timeout 3600s;
proxy_read_timeout 3600s;
我在“server”配置块中的 nginx.conf 文件开头注意到它具有默认的 60 秒超时值:
# Custom headers to proxied server
proxy_connect_timeout 5s;
proxy_send_timeout 60s;
proxy_read_timeout 60s;
在这种情况下我的问题是这些值是否可能会干扰这个问题,以及如何在 k8s 中更改这些值?
有没有人经历过这种情况或类似的事情,可以给我一个北?
谢谢!!
您想要实现的目标已在
自定义配置中的
Nginx Documentation
中提到。推荐使用ConfigMap。
$ cat configmap.yaml
apiVersion: v1
data:
proxy-connect-timeout: "10"
proxy-read-timeout: "120"
proxy-send-timeout: "120"
kind: ConfigMap
metadata:
name: ingress-nginx-controller
curl https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/docs/examples/customization/custom-configuration/configmap.yaml \
| kubectl apply -f -
如果更新了 Configmap,NGINX 将使用新配置重新加载。
之后,在
Ingress controller
窗格中,您应该看到类似以下的条目:
8 controller.go:137] Configuration changes detected, backend reload required.
8 controller.go:153] Backend successfully reloaded.
但是,请记住,不建议为
Nginx
使用更高的超时值。此信息可以在 Nginx Ingress - proxy-connect-timeout: 中找到
设置与代理服务器建立连接的超时。 需要注意的是,这个超时时间通常不能超过75秒。
附加信息:
1. 有时,当
Nginx Ingress
无法加载新配置时,您可以找到如下日志:
controller.go:149"] - Unexpected failure reloading the backend": Invalid PID number "" in "/tmp/nginx/pid"
要修复它,您只需重新启动即可
Ingress pod
。
2. 如果您不喜欢默认设置,您可以在Go language
中创建一个
配置模板。
要仅更新入口,而不更新整个控制器,请使用以下命令。
来源:带注释的高级配置
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: api-loteamento-spring-hml
annotations:
# for the NGINX's nginx-ingress
nginx.org/proxy-connect-timeout: 3600s
nginx.org/proxy-read-timeout: 3600s
nginx.org/proxy-send-timeout: 3600s
# for the default ingress-nginx
nginx.ingress.kubernetes.io/proxy-connect-timeout: 3600
nginx.ingress.kubernetes.io/proxy-read-timeout: 3600
nginx.ingress.kubernetes.io/proxy-send-timeout: 3600
labels:
run: api-loteamento-spring-hml
spec:
ingressClassName: yourIngressClass
rules:
- host: hml-api-loteamento-sp.gruposfa.bla.bla
http:
paths:
- path: /
pathType: ImplementationSpecific
backend:
service:
name: api-loteamento-spring-hml
port:
number: 80
我也面临着同样的问题。代理超时值未按照定义的值进行设置。因此,在更改metadata.annotations之后,我的问题就解决了。
Previous Values -
nginx.ingress.kubernetes.io/proxy-connect-timeout: "3600"
nginx.ingress.kubernetes.io/proxy-read-timeout: "3600"
nginx.ingress.kubernetes.io/proxy-send-timeout: "3600"
Working Values -
nginx.org/proxy-connect-timeout: 3600s
nginx.org/proxy-read-timeout: 3600s
nginx.org/proxy-send-timeout: 3600s