From 925c4a6ba072ca8df6fd925d579c08706ea5877b Mon Sep 17 00:00:00 2001
From: Simon Ehrenstein <simon.ehrenstein@gmail.com>
Date: Sat, 5 Dec 2020 12:37:37 +0100
Subject: [PATCH] Make kubectl run in proxy mode
---
.../random-scheduler/Dockerfile | 7 +++----
.../random-scheduler/schedule.sh | 7 ++++---
.../infrastructure/random-scheduler/test.yaml | 20 -------------------
3 files changed, 7 insertions(+), 27 deletions(-)
delete mode 100644 execution/infrastructure/random-scheduler/test.yaml
diff --git a/execution/infrastructure/random-scheduler/Dockerfile b/execution/infrastructure/random-scheduler/Dockerfile
index fadb231bd..9619d0bac 100644
--- a/execution/infrastructure/random-scheduler/Dockerfile
+++ b/execution/infrastructure/random-scheduler/Dockerfile
@@ -1,9 +1,8 @@
-FROM ubuntu:bionic
+FROM alpine:3.12
-RUN apt-get update
-RUN apt-get dist-upgrade
+RUN apk update
-RUN apt-get install -y curl jq
+RUN apk add curl jq bash
RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl
diff --git a/execution/infrastructure/random-scheduler/schedule.sh b/execution/infrastructure/random-scheduler/schedule.sh
index 2eec0f18c..e2e10c0ab 100755
--- a/execution/infrastructure/random-scheduler/schedule.sh
+++ b/execution/infrastructure/random-scheduler/schedule.sh
@@ -1,7 +1,8 @@
#!/bin/bash
-KUBE_API_SERVER=($(kubectl cluster-info | grep 'Kubernetes master' | awk '/http/ {print $NF}' | awk -F : '{print $1$2}' | awk '{ gsub(/\/\//, "://"); print }'))
-echo "K8's API server: $KUBE_API_SERVER"
+# use kubectl in proxy mode in order to allow curl requesting the k8's api server
+kubectl proxy --port 8080 &
+
echo "Target Namespace: $TARGET_NAMESPACE"
while true;
do
@@ -10,7 +11,7 @@ do
NODES=($(kubectl get nodes -o json | jq '.items[].metadata.name' | tr -d '"'))
NUMNODES=${#NODES[@]}
CHOSEN=${NODES[$[$RANDOM % $NUMNODES]]}
- curl --insecure --header "Content-Type:application/json" --request POST --data '{"apiVersion":"v1", "kind": "Binding", "metadata": {"name": "'$PODNAME'"}, "target": {"apiVersion": "v1", "kind": "Node", "name": "'$CHOSEN'"}}' https://10.96.0.1/api/v1/namespaces/$TARGET_NAMESPACE/pods/$PODNAME/binding/
+ curl --header "Content-Type:application/json" --request POST --data '{"apiVersion":"v1", "kind": "Binding", "metadata": {"name": "'$PODNAME'"}, "target": {"apiVersion": "v1", "kind": "Node", "name": "'$CHOSEN'"}}' localhost:8080/api/v1/namespaces/$TARGET_NAMESPACE/pods/$PODNAME/binding/
echo "Assigned $PODNAME to $CHOSEN"
done
sleep 1
diff --git a/execution/infrastructure/random-scheduler/test.yaml b/execution/infrastructure/random-scheduler/test.yaml
deleted file mode 100644
index 9104a0968..000000000
--- a/execution/infrastructure/random-scheduler/test.yaml
+++ /dev/null
@@ -1,20 +0,0 @@
-apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
-kind: Deployment
-metadata:
- name: nginx-deployment
-spec:
- selector:
- matchLabels:
- app: nginx
- replicas: 2 # tells deployment to run 2 pods matching the template
- template:
- metadata:
- labels:
- app: nginx
- spec:
- schedulerName: random-scheduler
- containers:
- - name: nginx
- image: nginx:1.14.2
- ports:
- - containerPort: 80
\ No newline at end of file
--
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