#!/bin/bash

echo ""
echo "... ] INSTALLING KUBE SCHEDULER [ ..."

HOME=$( cd "$(dirname "$0")" && pwd )
source $HOME/../config

systemctl stop kube-scheduler

gzip -v -c -d $HOME/../blobs/kube-scheduler.gz > /usr/local/bin/kube-scheduler
chmod +x /usr/local/bin/kube-scheduler

#generate kube-scheduler's kubeconfig
rm ${CONF_DIR}/kube-scheduler/kubeconfig
TOKEN=`cat ${CA_DIR}/kube-scheduler.token`
kubectl config set-cluster ${CLUSTER_NAME}.virtual.local --certificate-authority=${CA_DIR}/ca.crt --embed-certs=true --server=https://${NODE_IP}:6443 --kubeconfig=${CONF_DIR}/kube-scheduler/kubeconfig
kubectl config set-credentials system:kube-scheduler --client-certificate=${CA_DIR}/kube-scheduler.crt --client-key=${CA_DIR}/kube-scheduler.key --embed-certs=true --token=$TOKEN --kubeconfig=${CONF_DIR}/kube-scheduler/kubeconfig
kubectl config set-context ${CLUSTER_NAME}.virtual.local --cluster=${CLUSTER_NAME}.virtual.local --user=system:kube-scheduler --kubeconfig=${CONF_DIR}/kube-scheduler/kubeconfig
kubectl config use-context ${CLUSTER_NAME}.virtual.local --kubeconfig=${CONF_DIR}/kube-scheduler/kubeconfig

#generate kube-scheduler's config file
rm ${CONF_DIR}/kube-scheduler/kube-scheduler-config.yaml
cat << EOF | tee ${CONF_DIR}/kube-scheduler/kube-scheduler-config.yaml
apiVersion: kubescheduler.config.k8s.io/v1beta1
kind: KubeSchedulerConfiguration
clientConnection:
  kubeconfig: "${CONF_DIR}/kube-scheduler/kubeconfig"
leaderElection:
  leaderElect: true
EOF

#cat << EOF | tee ${CONF_DIR}/kube-scheduler/kube-scheduler-config.yaml
#algorithmSource:
#  provider: DefaultProvider
#apiVersion: kubescheduler.config.k8s.io/v1alpha1
#bindTimeoutSeconds: 600
#clientConnection:
#  acceptContentTypes: ""
#  burst: 100
#  contentType: application/vnd.kubernetes.protobuf
#  kubeconfig: "${CONF_DIR}/kube-scheduler/kubeconfig"
#  qps: 50
#disablePreemption: false
#enableContentionProfiling: false
#enableProfiling: false
#failureDomains: kubernetes.io/hostname,failure-domain.beta.kubernetes.io/zone,failure-domain.beta.kubernetes.io/region
#hardPodAffinitySymmetricWeight: 1
#healthzBindAddress: 127.0.0.1:10251
#kind: KubeSchedulerConfiguration
#leaderElection:
#  leaderElect: true
#  leaseDuration: 15s
#  lockObjectName: kube-scheduler
#  lockObjectNamespace: kube-system
#  renewDeadline: 10s
#  resourceLock: endpoints
#  retryPeriod: 2s
#metricsBindAddress: 127.0.0.1:10251
#percentageOfNodesToScore: 50
#schedulerName: default-scheduler
#EOF

# Setup systemd unit
cat <<EOF | tee /etc/systemd/system/kube-scheduler.service
[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes

[Service]
User=root
ExecStart=/usr/local/bin/kube-scheduler \\
--config=${CONF_DIR}/kube-scheduler/kube-scheduler-config.yaml \\
--bind-address=${NODE_IP} \\
--secure-port=10259 \\
--logtostderr=true \\
--v=2

Restart=on-failure
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload
systemctl enable kube-scheduler
systemctl start kube-scheduler