Start prometheus proxy nginx in process 1

**Problem:** When we start nginx in our start-up script, the nginx process would become the child process of start-up script process and not process 1. In this case, the kill signal from kubelet/docker will be sent to start-up script instead of nginx so the nginx process won't stop after kill. **Solution:** Change the proxy command and let nginx start at process 1.

Start prometheus proxy nginx in process 1
78f31511 · orangedeng · Craig Jellick · 0a1d0d47 · 78f31511
Commit 78f31511 authored Mar 06, 2019 by orangedeng Committed by Craig Jellick Mar 06, 2019
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nginx-configmap.yaml ...g/v0.0.2/charts/prometheus/templates/nginx-configmap.yaml +2 -2

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--- a/charts/rancher-monitoring/v0.0.2/charts/prometheus/templates/nginx-configmap.yaml
+++ b/charts/rancher-monitoring/v0.0.2/charts/prometheus/templates/nginx-configmap.yaml
@@ -15,14 +15,14 @@ data:
    srcpath="/nginx/nginx-conf.tmpl"
    dstpath="/var/run/nginx.conf"

-    if ![ -f $srcpath ]; then
+    if ! [ -f $srcpath ]; then
      exit 1
    fi

    token=$(cat /var/run/secrets/kubernetes.io/serviceaccount/token)
    sed "s/REPLACE_PARAM_AUTHORIZATION/Bearer ${token}/g" $srcpath | sed "s/REPLACE_PARAM_IP/${POD_IP}/g" > $dstpath
    
-    nginx -g "daemon off;" -c /var/run/nginx.conf
+    exec nginx -g "daemon off;" -c /var/run/nginx.conf

  nginx-conf.tmpl: |-
    user                  nginx;