From 38f0ba92fbad37395e1b091ad480d65c004dd16f Mon Sep 17 00:00:00 2001
From: Vincent <github@fleeto.us>
Date: Mon, 18 Mar 2019 16:44:38 +0800
Subject: [PATCH] zh:
 help/faq/metrics-and-logs/prometheus-application-metrics.md (#3729)

* zh: help/faq/metrics-and-logs/prometheus-application-metrics.md

* fixed: tu[p
---
 .../life-of-a-request.md                      |  0
 .../prometheus-application-metrics.md         | 20 +++++++++++++++++++
 2 files changed, 20 insertions(+)
 rename content_zh/help/faq/{telemetry => metrics-and-logs}/life-of-a-request.md (100%)
 create mode 100644 content_zh/help/faq/metrics-and-logs/prometheus-application-metrics.md

diff --git a/content_zh/help/faq/telemetry/life-of-a-request.md b/content_zh/help/faq/metrics-and-logs/life-of-a-request.md
similarity index 100%
rename from content_zh/help/faq/telemetry/life-of-a-request.md
rename to content_zh/help/faq/metrics-and-logs/life-of-a-request.md
diff --git a/content_zh/help/faq/metrics-and-logs/prometheus-application-metrics.md b/content_zh/help/faq/metrics-and-logs/prometheus-application-metrics.md
new file mode 100644
index 0000000000..2c7fcd7d70
--- /dev/null
+++ b/content_zh/help/faq/metrics-and-logs/prometheus-application-metrics.md
@@ -0,0 +1,20 @@
+---
+title: 我能在 Istio 中使用 Prometheus 抓取应用指标么？
+weight: 90
+---
+
+可以。Istio 发行包中带有 [Prometheus 配置]({{< github_file >}}/install/kubernetes/helm/istio/charts/prometheus/templates/configmap.yaml)，不论是否启用了双向 TLS，都可以借此配置来收集应用的指标数据。
+
+在没有启用双向 TLS 的环境中，`kubernetes-pods` 任务会从 Pod 中收集应用的指标数据。如果 Istio 启用了双向 TLS，就由 `kubernetes-pods-istio-secure` 任务完成应用指标数据的收集工作。
+
+两个 Job 都需要在欲抓取指标的应用 Pod 中加入如下注解：
+
+- `prometheus.io/scrape: "true"`
+- `prometheus.io/path: "<metrics path>"`
+- `prometheus.io/port: "<metrics port>"`
+
+一点说明：
+
+- 如果在 Citadel Pod 能够生成必要证书并分发给 Prometheus 之前启动了 Prometheus Pod，为了能够在双向 TLS 环境下抓取应用指标，必须重启 Prometheus Pod。
+
+- 如果你的应用在一个单独的端口上开放 Prometheus 指标接口，这个端口需要加入 Service 和 Deployment 清单之中。