istio.io/archive/v1.23/docs/tasks/observability/metrics/customize-metrics/snips.sh

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#!/bin/bash
# shellcheck disable=SC2034,SC2153,SC2155,SC2164
# Copyright Istio Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
####################################################################################################
# WARNING: THIS IS AN AUTO-GENERATED FILE, DO NOT EDIT. PLEASE MODIFY THE ORIGINAL MARKDOWN FILE:
# docs/tasks/observability/metrics/customize-metrics/index.md
####################################################################################################
snip_enable_custom_metrics_1() {
cat <<EOF > ./custom_metrics.yaml
apiVersion: telemetry.istio.io/v1
kind: Telemetry
metadata:
name: namespace-metrics
spec:
metrics:
- providers:
- name: prometheus
overrides:
- match:
metric: REQUEST_COUNT
tagOverrides:
destination_port:
value: "string(destination.port)"
request_host:
value: "request.host"
EOF
kubectl apply -f custom_metrics.yaml
}
snip_verify_the_results_1() {
curl "http://$GATEWAY_URL/productpage"
}
snip_verify_the_results_2() {
kubectl exec "$(kubectl get pod -l app=productpage -o jsonpath='{.items[0].metadata.name}')" -c istio-proxy -- curl -sS 'localhost:15000/stats/prometheus' | grep istio_requests_total
}
! IFS=$'\n' read -r -d '' snip_use_expressions_for_values_1 <<\ENDSNIP
has(request.host) ? request.host : "unknown"
ENDSNIP