Container Infrastructure Management Service for OpenStack
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INGRESS_TRAEFIK_MANIFEST=/srv/magnum/kubernetes/ingress-traefik.yaml
INGRESS_TRAEFIK_MANIFEST_CONTENT=$(cat <<EOF
---
kind: DaemonSet
apiVersion: extensions/v1beta1
metadata:
name: ingress-traefik
namespace: kube-system
labels:
k8s-app: ingress-traefik-backend
spec:
template:
metadata:
labels:
k8s-app: ingress-traefik-backend
name: ingress-traefik-backend
spec:
serviceAccountName: ingress-traefik
terminationGracePeriodSeconds: 60
hostNetwork: true
containers:
- image: ${CONTAINER_INFRA_PREFIX:-docker.io/}traefik
name: ingress-traefik-backend
ports:
- name: http
containerPort: 80
hostPort: 80
- name: https
containerPort: 443
hostPort: 443
- name: admin
containerPort: 8080
securityContext:
privileged: true
args:
- --api
- --logLevel=INFO
- --kubernetes
- --entrypoints=Name:http Address::80
- --entrypoints=Name:https Address::443 TLS
nodeSelector:
role: ${INGRESS_CONTROLLER_ROLE}
---
kind: Service
apiVersion: v1
metadata:
name: ingress-traefik
namespace: kube-system
spec:
selector:
k8s-app: ingress-traefik-backend
ports:
- name: http
protocol: TCP
port: 80
- name: https
protocol: TCP
port: 443
- name: admin
protocol: TCP
port: 8080
type: NodePort
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: ingress-traefik
rules:
- apiGroups:
- ""
resources:
- services
- endpoints
- secrets
verbs:
- get
- list
- watch
- apiGroups:
- extensions
resources:
- ingresses
verbs:
- get
- list
- watch
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: ingress-traefik
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: ingress-traefik
subjects:
- kind: ServiceAccount
name: ingress-traefik
namespace: kube-system
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: ingress-traefik
namespace: kube-system
EOF
)
writeFile $INGRESS_TRAEFIK_MANIFEST "$INGRESS_TRAEFIK_MANIFEST_CONTENT"
INGRESS_TRAEFIK_BIN="/srv/magnum/kubernetes/bin/ingress-traefik"
INGRESS_TRAEFIK_SERVICE="/etc/systemd/system/ingress-traefik.service"
# NOTE(flwang): Let's keep the same addons yaml file on all masters,
# but if it's not the primary/bootstrapping master, don't try to
# create those resources to avoid race condition issue until the
# kubectl issue https://github.com/kubernetes/kubernetes/issues/44165
# fixed.
if [ "$MASTER_INDEX" != "0" ]; then
exit 0
fi
# Binary for ingress traefik
INGRESS_TRAEFIK_BIN_CONTENT='''#!/bin/sh
until curl -sf "http://127.0.0.1:8080/healthz"
do
echo "Waiting for Kubernetes API..."
sleep 5
done
# Check if all resources exist already before creating them
kubectl -n kube-system get service ingress-traefik
if [ "$?" != "0" ] && \
[ -f "'''${INGRESS_TRAEFIK_MANIFEST}'''" ]; then
kubectl create -f '''${INGRESS_TRAEFIK_MANIFEST}'''
fi
'''
writeFile $INGRESS_TRAEFIK_BIN "$INGRESS_TRAEFIK_BIN_CONTENT"
# Service for ingress traefik
INGRESS_TRAEFIK_SERVICE_CONTENT='''[Unit]
Requires=kube-apiserver.service
[Service]
Type=oneshot
Environment=HOME=/root
EnvironmentFile=-/etc/kubernetes/config
ExecStart='''${INGRESS_TRAEFIK_BIN}'''
[Install]
WantedBy=multi-user.target
'''
writeFile $INGRESS_TRAEFIK_SERVICE "$INGRESS_TRAEFIK_SERVICE_CONTENT"
chown root:root ${INGRESS_TRAEFIK_BIN}
chmod 0755 ${INGRESS_TRAEFIK_BIN}
chown root:root ${INGRESS_TRAEFIK_SERVICE}
chmod 0644 ${INGRESS_TRAEFIK_SERVICE}
# Launch the ingress traefik service
set -x
systemctl daemon-reload
systemctl enable ingress-traefik.service
systemctl start --no-block ingress-traefik.service