From 5c099bba2364a2a726ba94ef0790a6e626ab5092 Mon Sep 17 00:00:00 2001
From: Simon Ehrenstein <simon.ehrenstein@gmail.com>
Date: Thu, 26 Nov 2020 19:18:44 +0100
Subject: [PATCH] Add custom random-scheduler
---
.gitlab-ci.yml | 2 +-
execution/random-scheduler/Dockerfile | 14 ++++
execution/random-scheduler/deployment.yaml | 76 +++-------------------
execution/random-scheduler/rbac.yaml | 21 ++++++
execution/random-scheduler/schedule.sh | 29 +++++++++
execution/random-scheduler/test.yaml | 20 ++++++
6 files changed, 94 insertions(+), 68 deletions(-)
create mode 100644 execution/random-scheduler/Dockerfile
create mode 100644 execution/random-scheduler/rbac.yaml
create mode 100755 execution/random-scheduler/schedule.sh
create mode 100644 execution/random-scheduler/test.yaml
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 05ea0e7d9..ba2bba99b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -241,4 +241,4 @@ deploy-uc4-workload-generator:
when: always
- if: "$DOCKERHUB_ORG && $DOCKERHUB_ID && $DOCKERHUB_PW && $IMAGE_NAME && $JAVA_PROJECT_NAME"
when: manual
- allow_failure: true
+ allow_failure: true
\ No newline at end of file
diff --git a/execution/random-scheduler/Dockerfile b/execution/random-scheduler/Dockerfile
new file mode 100644
index 000000000..4c78f6a20
--- /dev/null
+++ b/execution/random-scheduler/Dockerfile
@@ -0,0 +1,14 @@
+FROM ubuntu:bionic
+
+RUN apt-get update
+RUN apt-get install -y curl jq
+
+RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl
+
+RUN chmod +x ./kubectl
+
+RUN mv ./kubectl /usr/local/bin/kubectl
+
+ADD schedule.sh /bin/schedule
+
+CMD /bin/schedule
\ No newline at end of file
diff --git a/execution/random-scheduler/deployment.yaml b/execution/random-scheduler/deployment.yaml
index d42b57c30..1bbc60a1c 100644
--- a/execution/random-scheduler/deployment.yaml
+++ b/execution/random-scheduler/deployment.yaml
@@ -1,80 +1,22 @@
-apiVersion: v1
-kind: ServiceAccount
-metadata:
- name: random-scheduler
- namespace: kube-system
----
-apiVersion: rbac.authorization.k8s.io/v1
-kind: ClusterRoleBinding
-metadata:
- name: random-scheduler-as-kube-scheduler
-subjects:
-- kind: ServiceAccount
- name: random-scheduler
- namespace: kube-system
-roleRef:
- kind: ClusterRole
- name: system:kube-scheduler
- apiGroup: rbac.authorization.k8s.io
----
-apiVersion: rbac.authorization.k8s.io/v1
-kind: ClusterRoleBinding
-metadata:
- name: random-scheduler-as-volume-scheduler
-subjects:
-- kind: ServiceAccount
- name: random-scheduler
- namespace: kube-system
-roleRef:
- kind: ClusterRole
- name: system:volume-scheduler
- apiGroup: rbac.authorization.k8s.io
----
apiVersion: apps/v1
kind: Deployment
metadata:
- labels:
- component: scheduler
- tier: control-plane
name: random-scheduler
+ labels:
+ app: random-scheduler
namespace: kube-system
spec:
+ replicas: 1
selector:
matchLabels:
- component: scheduler
- tier: control-plane
- replicas: 1
+ app: random-scheduler
template:
metadata:
labels:
- component: scheduler
- tier: control-plane
- version: second
+ app: random-scheduler
spec:
- serviceAccountName: random-scheduler
+ serviceAccount: random-scheduler
containers:
- - command:
- - /usr/local/bin/kube-scheduler
- - --address=0.0.0.0
- - --leader-elect=false
- - --scheduler-name=random-scheduler # use correct config
- image: gcr.io/my-gcp-project/my-kube-scheduler:1.0 # use correct image
- livenessProbe:
- httpGet:
- path: /healthz
- port: 10251
- initialDelaySeconds: 15
- name: kube-second-scheduler
- readinessProbe:
- httpGet:
- path: /healthz
- port: 10251
- resources:
- requests:
- cpu: '0.1'
- securityContext:
- privileged: false
- volumeMounts: []
- hostNetwork: false
- hostPID: false
- volumes: []
\ No newline at end of file
+ - name: random-scheduler
+ image: sehrenstein/random-scheduler:latest
+ imagePullPolicy: Always
diff --git a/execution/random-scheduler/rbac.yaml b/execution/random-scheduler/rbac.yaml
new file mode 100644
index 000000000..ba463cc54
--- /dev/null
+++ b/execution/random-scheduler/rbac.yaml
@@ -0,0 +1,21 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+ namespace: kube-system
+ name: random-scheduler
+ labels:
+ app: random-scheduler
+ component: random-scheduler
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+ name: random-scheduler
+subjects:
+- kind: ServiceAccount
+ name: random-scheduler
+ namespace: kube-system
+roleRef:
+ kind: ClusterRole
+ apiGroup: rbac.authorization.k8s.io
+ name: system:kube-scheduler
\ No newline at end of file
diff --git a/execution/random-scheduler/schedule.sh b/execution/random-scheduler/schedule.sh
new file mode 100755
index 000000000..0cec94ef6
--- /dev/null
+++ b/execution/random-scheduler/schedule.sh
@@ -0,0 +1,29 @@
+#!/bin/bash
+
+SERVER=($(kubectl config view -o json | jq '.clusters[0].cluster.server'))
+
+while true;
+
+do
+
+ echo "$(kubectl get pods -n default)"
+ for PODNAME in $(kubectl get pods -n default -o json | jq '.items[] | select(.spec.schedulerName == "random-scheduler") | select(.spec.nodeName == null) | .metadata.name' | tr -d '"');
+
+ do
+
+ NODES=($(kubectl get nodes -o json | jq '.items[].metadata.name' | tr -d '"'))
+
+
+ NUMNODES=${#NODES[@]}
+
+ CHOSEN=${NODES[$[$RANDOM % $NUMNODES]]}
+
+ curl --header "Content-Type:application/json" --request POST --data '{"apiVersion":"v1", "kind": "Binding", "metadata": {"name": "'$PODNAME'"}, "target": {"apiVersion": "v1", "kind": "Node", "name": "'$CHOSEN'"}}' $SERVER/api/v1/namespaces/default/pods/$PODNAME/binding/
+
+ echo "Assigned $PODNAME to $CHOSEN"
+
+ done
+
+ sleep 1
+
+done
\ No newline at end of file
diff --git a/execution/random-scheduler/test.yaml b/execution/random-scheduler/test.yaml
new file mode 100644
index 000000000..9104a0968
--- /dev/null
+++ b/execution/random-scheduler/test.yaml
@@ -0,0 +1,20 @@
+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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