From 630d85b566c21a46ca9acbce6c51c9aaa14dd3f4 Mon Sep 17 00:00:00 2001
From: Oliver Moser <o@omoser.com>
Date: Fri, 23 Feb 2018 18:06:45 +0100
Subject: [PATCH 1/2] support for additional libs via init container

---
 helm/flink/templates/deployment-jobmanager.yaml  | 14 ++++++++++++++
 helm/flink/templates/deployment-taskmanager.yaml | 14 ++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/helm/flink/templates/deployment-jobmanager.yaml b/helm/flink/templates/deployment-jobmanager.yaml
index e3cd5e7..3bcee99 100644
--- a/helm/flink/templates/deployment-jobmanager.yaml
+++ b/helm/flink/templates/deployment-jobmanager.yaml
@@ -10,6 +10,16 @@ spec:
         app: {{ template "fullname" . }}
         component: jobmanager
     spec:
+      initContainers:
+      - name: flink-copy-libs
+        image: {{ .Values.image }}:{{ .Values.imageTag }}
+        command:
+        - sh
+        - -c
+        - cp /opt/flink/lib/* {{ range .Values.flink.additional_libs}}/opt/flink/opt/{{ . }} {{ end }} /flink-lib;
+        volumeMounts:
+        - name: flink-lib
+          mountPath: /flink-lib
       containers:
       - name: jobmanager
         image: {{ .Values.image }}:{{ .Values.imageTag }}
@@ -38,6 +48,8 @@ spec:
           mountPath: /etc/flink
         - name: {{ template "fullname" . }}-hadoop-config
           mountPath: /etc/hadoop/conf
+        - name: flink-lib
+          mountPath: /opt/flink/lib
       volumes:
         - name: {{ template "fullname" . }}-flink-config
           configMap:
@@ -45,3 +57,5 @@ spec:
         - name: {{ template "fullname" . }}-hadoop-config
           configMap:
             name: {{ template "fullname" . }}-hadoop-config
+        - name: flink-lib
+          emptyDir: {}
diff --git a/helm/flink/templates/deployment-taskmanager.yaml b/helm/flink/templates/deployment-taskmanager.yaml
index a681d42..b5062a5 100644
--- a/helm/flink/templates/deployment-taskmanager.yaml
+++ b/helm/flink/templates/deployment-taskmanager.yaml
@@ -10,6 +10,16 @@ spec:
         app: {{ template "fullname" . }}
         component: taskmanager
     spec:
+      initContainers:
+      - name: flink-copy-libs
+        image: {{ .Values.image }}:{{ .Values.imageTag }}
+        command:
+        - sh
+        - -c
+        - cp /opt/flink/lib/* {{ range .Values.flink.additional_libs}}/opt/flink/opt/{{ . }} {{ end }} /flink-lib;
+        volumeMounts:
+        - name: flink-lib
+          mountPath: /flink-lib
       containers:
       - name: taskmanager
         image: {{ .Values.image }}:{{ .Values.imageTag }}
@@ -38,6 +48,8 @@ spec:
           mountPath: /etc/flink
         - name: {{ template "fullname" . }}-hadoop-config
           mountPath: /etc/hadoop/conf
+        - name: flink-lib
+          mountPath: /opt/flink/lib
       volumes:
         - name: {{ template "fullname" . }}-flink-config
           configMap:
@@ -45,3 +57,5 @@ spec:
         - name: {{ template "fullname" . }}-hadoop-config
           configMap:
             name: {{ template "fullname" . }}-hadoop-config
+        - name: flink-lib
+          emptyDir: {}

From 938c2c2892494e6080574858312771467a2b7adb Mon Sep 17 00:00:00 2001
From: Oliver Moser <o@omoser.com>
Date: Fri, 23 Feb 2018 20:04:51 +0100
Subject: [PATCH 2/2] Adding section on additional libraries

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index cec9395..ed89fa4 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,10 @@ Deploy a non-HA Flink cluster with three taskmanagers:
 
     $ helm install --name my-cluster --set flink.num_taskmanagers=3 flink*.tgz
 
+Install additional (optional) libraries from the flink distribution (you can only reference libraries from `$FLINK_BASEDIR/opt` here):
+
+	$ helm install --name my-cluster --set flink.additional_libs="{flink-metrics-prometheus-1.4.0.jar,flink-metrics-dropwizard-1.4.0.jar}" flink*.tgz
+
 Deploy an HA Flink cluster with three taskmanagers:
 
     $ cat > values.yaml <<EOF