Ingres | Ingres is a feature rich and robust database | Database library

In order to resolve the compilation failure issue you need to change this:

I have analyzed you issue and came to the following conclusions:

1. The Ingress will work and these Warnings you see are just to inform you about the available api versioning. You don't have to worry about this. I've seen the same Warnings:

To get the Configmap object, you can use one of the below two:

It is very hard to guess the relationship between the body of your question and its title. If I understand you correctly, you want to print the first line (SE followed by digits) AND the output of the database query.

Try:

You can use the nginx.ingress.kubernetes.io/service-upstream annotation to suppress the normal Endpoints behavior and use the Service directly instead. This has better integration with some deployment models but 5-7 seconds is extreme for ingress-nginx to be seeing the Endpoints update. There can be a short gap from when a pod is removed and when ingress-nginx sees the Endpoint removal. You usually fix that with a pre-stop hook that just sleeps for a few seconds to ensure by the time it actually exits, the Endpoint change has been processed everywhere.

No, Istio does not provide tracing headers propagation. However it can be configured on application side without use of 3rd party APIs.

According to Istio documentation:

Istio leverages Envoy’s distributed tracing feature to provide tracing integration out of the box. Specifically, Istio provides options to install various tracing backend and configure proxies to send trace spans to them automatically. See Zipkin, Jaeger and LightStep task docs about how Istio works with those tracing systems.

Istio documentation also has an example of application side header propagation for the bookinfo demo application:

Trace context propagation

Although Istio proxies are able to automatically send spans, they need some hints to tie together the entire trace. Applications need to propagate the appropriate HTTP headers so that when the proxies send span information, the spans can be correlated correctly into a single trace.

To do this, an application needs to collect and propagate the following headers from the incoming request to any outgoing requests:

• x-request-id
• x-b3-traceid
• x-b3-spanid
• x-b3-parentspanid
• x-b3-sampled
• x-b3-flags
• x-ot-span-context

Additionally, tracing integrations based on OpenCensus (e.g. Stackdriver) propagate the following headers:

• x-cloud-trace-context
• traceparent
• grpc-trace-bin

If you look at the sample Python productpage service, for example, you see that the application extracts the required headers from an HTTP request using OpenTracing libraries: