How to link custom prometheus in kiali

[hari.y...@gmail.com]

Hi All

I have enabled  kiali and prometheus  like below

install-istio:

istioctl manifest apply \

--set values.global.hub=istio \

--set values.global.tag=1.6.5-distroless \

--set values.global.jwtPolicy=first-party-jwt \

--set values.global.proxy.resources.requests.cpu=100m \

--set values.global.proxy.resources.requests.memory=128Mi \

--set values.global.proxy.resources.limits.cpu=200m \

--set values.global.proxy.resources.limits.memory=256Mi \

--set values.prometheus.enabled=false \

--set values.kiali.enabled=true \

--set values.tracing.enabled=true \

--set values.gateways.istio-ingressgateway.sds.enabled=true

Kiali ui is not working if prometheus is disabled.

I have a situation where prometheus is installed separately with thanos sidecars, Is it possible to point the kiali ui to my custom prometheus?

Thanks,

Hari Yada

[Lucas Ponce]

On Fri, Aug 21, 2020 at 9:38 AM hari.y...@gmail.com <hari.y...@gmail.com> wrote:

Hi All

I have enabled  kiali and prometheus  like below

install-istio:

istioctl manifest apply \

--set values.global.hub=istio \

--set values.global.tag=1.6.5-distroless \

--set values.global.jwtPolicy=first-party-jwt \

--set values.global.proxy.resources.requests.cpu=100m \

--set values.global.proxy.resources.requests.memory=128Mi \

--set values.global.proxy.resources.limits.cpu=200m \

--set values.global.proxy.resources.limits.memory=256Mi \

--set values.prometheus.enabled=false \

--set values.kiali.enabled=true \

--set values.tracing.enabled=true \

--set values.gateways.istio-ingressgateway.sds.enabled=true

Kiali ui is not working if prometheus is disabled.

Correct, Kiali reads Istio telemetry stored in Prometheus.

 

I have a situation where prometheus is installed separately with thanos sidecars, Is it possible to point the kiali ui to my custom prometheus?

In theory yes.

Depending how you installed Kiali (directly using helm charts or via operator) you may need to tweak the default config and tell where is your prometheus instance:

This is Kiali config if you installed via operator, if not, you should modify it directly on the ConfigMap used

https://github.com/kiali/kiali-operator/blob/master/deploy/kiali/kiali_cr.yaml#L427

Another topic is how to configure Istio to use your own prometheus, which is something that you need to check that is collecting telemetry correctly.

 

Thanks,

Hari Yada

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