Container Infrastructure Management Service for OpenStack
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#!/bin/sh -x
. /etc/sysconfig/heat-params
echo "configuring kubernetes (minion)"
_prefix=${CONTAINER_INFRA_PREFIX:-docker.io/openstackmagnum/}
_addtl_mounts=''
mkdir -p /opt/cni
_addtl_mounts=',{"type":"bind","source":"/opt/cni","destination":"/opt/cni","options":["bind","rw","slave","mode=777"]}'
if [ "$NETWORK_DRIVER" = "calico" ]; then
if [ "`systemctl status NetworkManager.service | grep -o "Active: active"`" = "Active: active" ]; then
CALICO_NM=/etc/NetworkManager/conf.d/calico.conf
[ -f ${CALICO_NM} ] || {
echo "Writing File: $CALICO_NM"
mkdir -p $(dirname ${CALICO_NM})
cat << EOF > ${CALICO_NM}
[keyfile]
unmanaged-devices=interface-name:cali*;interface-name:tunl*
EOF
}
systemctl restart NetworkManager
fi
fi
atomic install --storage ostree --system --system-package=no --set=ADDTL_MOUNTS=${_addtl_mounts} --name=kubelet ${_prefix}kubernetes-kubelet:${KUBE_TAG}
atomic install --storage ostree --system --system-package=no --name=kube-proxy ${_prefix}kubernetes-proxy:${KUBE_TAG}
CERT_DIR=/etc/kubernetes/certs
PROTOCOL=https
ETCD_SERVER_IP=${ETCD_SERVER_IP:-$KUBE_MASTER_IP}
KUBE_PROTOCOL="https"
KUBELET_KUBECONFIG=/etc/kubernetes/kubelet-config.yaml
PROXY_KUBECONFIG=/etc/kubernetes/proxy-config.yaml
if [ "$TLS_DISABLED" = "True" ]; then
PROTOCOL=http
KUBE_PROTOCOL="http"
fi
KUBE_MASTER_URI="$KUBE_PROTOCOL://$KUBE_MASTER_IP:$KUBE_API_PORT"
if [ -z "${KUBE_NODE_IP}" ]; then
KUBE_NODE_IP=$(curl -s http://169.254.169.254/latest/meta-data/local-ipv4)
fi
HOSTNAME_OVERRIDE=$(hostname --short | sed 's/\.novalocal//')
cat << EOF >> ${KUBELET_KUBECONFIG}
apiVersion: v1
clusters:
- cluster:
certificate-authority: ${CERT_DIR}/ca.crt
server: ${KUBE_MASTER_URI}
name: kubernetes
contexts:
- context:
cluster: kubernetes
user: system:node:${HOSTNAME_OVERRIDE}
name: default
current-context: default
kind: Config
preferences: {}
users:
- name: system:node:${HOSTNAME_OVERRIDE}
user:
as-user-extra: {}
client-certificate: ${CERT_DIR}/kubelet.crt
client-key: ${CERT_DIR}/kubelet.key
EOF
cat << EOF >> ${PROXY_KUBECONFIG}
apiVersion: v1
clusters:
- cluster:
certificate-authority: ${CERT_DIR}/ca.crt
server: ${KUBE_MASTER_URI}
name: kubernetes
contexts:
- context:
cluster: kubernetes
user: kube-proxy
name: default
current-context: default
kind: Config
preferences: {}
users:
- name: kube-proxy
user:
as-user-extra: {}
client-certificate: ${CERT_DIR}/proxy.crt
client-key: ${CERT_DIR}/proxy.key
EOF
if [ "$TLS_DISABLED" = "True" ]; then
sed -i 's/^.*user:$//' ${KUBELET_KUBECONFIG}
sed -i 's/^.*client-certificate.*$//' ${KUBELET_KUBECONFIG}
sed -i 's/^.*client-key.*$//' ${KUBELET_KUBECONFIG}
sed -i 's/^.*certificate-authority.*$//' ${KUBELET_KUBECONFIG}
fi
chmod 0644 ${KUBELET_KUBECONFIG}
chmod 0644 ${PROXY_KUBECONFIG}
sed -i '
/^KUBE_ALLOW_PRIV=/ s/=.*/="--allow-privileged='"$KUBE_ALLOW_PRIV"'"/
/^KUBE_ETCD_SERVERS=/ s|=.*|="--etcd-servers=http://'"$ETCD_SERVER_IP"':2379"|
/^KUBE_MASTER=/ s|=.*|="--master='"$KUBE_MASTER_URI"'"|
' /etc/kubernetes/config
# NOTE: Kubernetes plugin for Openstack requires that the node name registered
# in the kube-apiserver be the same as the Nova name of the instance, so that
# the plugin can use the name to query for attributes such as IP, etc.
# The hostname of the node is set to be the Nova name of the instance, and
# the option --hostname-override for kubelet uses the hostname to register the node.
# Using any other name will break the load balancer and cinder volume features.
mkdir -p /etc/kubernetes/manifests
KUBELET_ARGS="--pod-manifest-path=/etc/kubernetes/manifests --cadvisor-port=0 --kubeconfig ${KUBELET_KUBECONFIG} --hostname-override=${HOSTNAME_OVERRIDE}"
KUBELET_ARGS="${KUBELET_ARGS} --address=${KUBE_NODE_IP} --port=10250 --read-only-port=0 --anonymous-auth=false --authorization-mode=Webhook --authentication-token-webhook=true"
KUBELET_ARGS="${KUBELET_ARGS} --cluster_dns=${DNS_SERVICE_IP} --cluster_domain=${DNS_CLUSTER_DOMAIN}"
KUBELET_ARGS="${KUBELET_ARGS} --volume-plugin-dir=/var/lib/kubelet/volumeplugins"
KUBELET_ARGS="${KUBELET_ARGS} ${KUBELET_OPTIONS}"
if [ "$(echo "${CLOUD_PROVIDER_ENABLED}" | tr '[:upper:]' '[:lower:]')" = "true" ]; then
KUBELET_ARGS="${KUBELET_ARGS} --cloud-provider=external"
fi
# Workaround for Cinder support (fixed in k8s >= 1.6)
if [ ! -f /usr/bin/udevadm ]; then
ln -s /sbin/udevadm /usr/bin/udevadm
fi
# For using default log-driver, other options should be ignored
sed -i 's/\-\-log\-driver\=journald//g' /etc/sysconfig/docker
KUBELET_ARGS="${KUBELET_ARGS} --pod-infra-container-image=${CONTAINER_INFRA_PREFIX:-gcr.io/google_containers/}pause:3.0"
if [ -n "${INSECURE_REGISTRY_URL}" ]; then
echo "INSECURE_REGISTRY='--insecure-registry ${INSECURE_REGISTRY_URL}'" >> /etc/sysconfig/docker
fi
KUBELET_ARGS="${KUBELET_ARGS} --client-ca-file=${CERT_DIR}/ca.crt --tls-cert-file=${CERT_DIR}/kubelet.crt --tls-private-key-file=${CERT_DIR}/kubelet.key"
# specified cgroup driver
KUBELET_ARGS="${KUBELET_ARGS} --cgroup-driver=${CGROUP_DRIVER}"
systemctl disable docker
if cat /usr/lib/systemd/system/docker.service | grep 'native.cgroupdriver'; then
cp /usr/lib/systemd/system/docker.service /etc/systemd/system/
sed -i "s/\(native.cgroupdriver=\)\w\+/\1$CGROUP_DRIVER/" \
/etc/systemd/system/docker.service
else
cat > /etc/systemd/system/docker.service.d/cgroupdriver.conf << EOF
ExecStart=---exec-opt native.cgroupdriver=$CGROUP_DRIVER
EOF
fi
systemctl daemon-reload
systemctl enable docker
cat > /etc/kubernetes/get_require_kubeconfig.sh <<EOF
#!/bin/bash
KUBE_VERSION=\$(kubelet --version | awk '{print \$2}')
min_version=v1.8.0
if [[ "\${min_version}" != \$(echo -e "\${min_version}\n\${KUBE_VERSION}" | sort -s -t. -k 1,1 -k 2,2n -k 3,3n | head -n1) && "\${KUBE_VERSION}" != "devel" ]]; then
echo "--require-kubeconfig"
fi
EOF
chmod +x /etc/kubernetes/get_require_kubeconfig.sh
KUBELET_ARGS="${KUBELET_ARGS} --network-plugin=cni --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin"
sed -i '
/^KUBELET_ADDRESS=/ s/=.*/="--address=0.0.0.0"/
/^KUBELET_HOSTNAME=/ s/=.*/=""/
s/^KUBELET_API_SERVER=.*$//
/^KUBELET_ARGS=/ s|=.*|="'"\$(/etc/kubernetes/get_require_kubeconfig.sh) ${KUBELET_ARGS}"'"|
' /etc/kubernetes/kubelet
cat > /etc/kubernetes/proxy << EOF
KUBE_PROXY_ARGS="--kubeconfig=${PROXY_KUBECONFIG} --cluster-cidr=${PODS_NETWORK_CIDR}"
EOF
cat >> /etc/environment <<EOF
KUBERNETES_MASTER=$KUBE_MASTER_URI
EOF
hostname `hostname | sed 's/.novalocal//'`