cri-o support
This commit adds support for cri-o by changing the binary initially used to run CNI plugin to runc and falling back to docker only in case it's not available. Also DevStack support for installing and configuring Kubernetes with cri-o is added. Implements: blueprint crio-support Depends-On: Ib049d66058429e499f5d0932c4a749820bec73ff Depends-On: Ic3c7d355a455298f43e37fb2aceddfd1e7eefaf2 Change-Id: I081edf0dbd4eb57826399c4820376381950080ed
This commit is contained in:
Michał Dulko
parent
7ba64a87da
commit
eecd44d335
35
cni_ds_init
35
cni_ds_init
@ -16,20 +16,39 @@ finder="
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import json
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import sys
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mode = 'docker' if len(sys.argv) == 1 else sys.argv[1]
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if mode == 'docker':
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label_key = 'Labels'
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id_key = 'Id'
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else:
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label_key = 'annotations'
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id_key = 'id'
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containers=json.load(sys.stdin)
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# Looping over all the containers until we find the right one. We print it.
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for container in containers:
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if ('Labels' in container and
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container['Labels'].get('io.kubernetes.pod.name') == '${KURYR_CNI_POD_NAME}' and
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container['Labels'].get('io.kubernetes.pod.namespace') == '${POD_NAMESPACE}' and
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container['Labels'].get('io.kubernetes.docker.type') == 'container'):
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print(container['Id'])
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if (label_key in container and
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container[label_key].get('io.kubernetes.pod.name') == '${KURYR_CNI_POD_NAME}' and
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container[label_key].get('io.kubernetes.pod.namespace') == '${POD_NAMESPACE}' and
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container[label_key].get('io.kubernetes.container.name') != 'POD'):
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print(container[id_key])
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break
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"
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# TODO(dulek): We might want to fetch socket path from config.
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CONTAINERID=\`curl --unix-socket /var/run/docker.sock http://v1.24/containers/json 2> /dev/null | python -c "\${finder}"\`
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envs=(\$(env | grep ^CNI_))
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if command -v runc > /dev/null; then
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# We have runc binary, let's see if that works.
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CONTAINERID=\`runc list -f json 2> /dev/null | python -c "\${finder}" runc\`
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if [[ ! -z \${CONTAINERID} ]]; then
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exec runc exec \${envs[@]/#/--env } "\${CONTAINERID}" kuryr-cni --config-file /etc/kuryr/kuryr.conf
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fi
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fi
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# Fall back to using Docker binary.
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# TODO(dulek): We might want to fetch socket path from config.
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CONTAINERID=\`curl --unix-socket /var/run/docker.sock http://v1.24/containers/json 2> /dev/null | python -c "\${finder}" docker\`
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docker exec \${envs[@]/#/--env } -i "\${CONTAINERID}" kuryr-cni --config-file /etc/kuryr/kuryr.conf
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EOF
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@ -117,8 +117,8 @@ function get_container {
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fi
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image="${image_name}:${version}"
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if [ -z "$(docker images -q "$image")" ]; then
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docker pull "$image"
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if [ -z "$(container_runtime images -q "$image")" ]; then
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container_runtime pull "$image"
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fi
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}
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@ -131,16 +131,17 @@ function run_container {
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# Runs a detached container and uses devstack's run process to monitor
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# its logs
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local name
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local docker_bin
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docker_bin=$(which docker)
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name="$1"
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shift
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args="$@"
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$docker_bin create --name $name $args
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container_runtime create --name $name $args
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run_process "$name" \
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"$docker_bin start --attach $name"
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if [[ ${CONTAINER_ENGINE} == 'crio' ]]; then
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run_process "$name" "$(which podman) start --attach $name" root root
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else
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run_process "$name" "$(which docker) start --attach $name"
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fi
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}
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# stop_container
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@ -151,8 +152,8 @@ function stop_container {
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local name
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name="$1"
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docker kill "$name"
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docker rm "$name"
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container_runtime kill "$name"
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container_runtime rm "$name"
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stop_process "$name"
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}
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@ -366,12 +367,22 @@ function build_kuryr_containers() {
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cni_buildtool_args="${cni_buildtool_args} --no-daemon"
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fi
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if [[ "$CONTAINER_ENGINE" == "crio" ]]; then
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cni_buildtool_args="${cni_buildtool_args} --podman"
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fi
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# Build controller image
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sudo docker build \
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-t kuryr/controller -f "$controller_dockerfile" .
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# FIXME(dulek): Until https://github.com/containers/buildah/issues/1206 is
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# resolved instead of podman we need to use buildah directly,
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# hence this awful if clause.
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if [[ ${CONTAINER_ENGINE} == 'crio' ]]; then
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sudo buildah bud -t docker.io/kuryr/controller -f "$controller_dockerfile" .
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else
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container_runtime build -t kuryr/controller -f "$controller_dockerfile" .
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fi
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# Build CNI image
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sudo "./tools/build_cni_daemonset_image" $cni_buildtool_args
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"./tools/build_cni_daemonset_image" $cni_buildtool_args
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popd
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}
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@ -1363,6 +1374,7 @@ function docker_install_ca_certs {
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local registry_hostnames
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local destdir
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# TODO(dulek): Support for CRI-O.
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registry_hostnames=(${1//,/ })
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for hostname in ${registry_hostnames[@]}; do
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destdir="/etc/docker/certs.d/${hostname}:5000"
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@ -1393,6 +1405,7 @@ function configure_and_run_registry {
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local registry_ip
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local hostnames
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# TODO(dulek): Support for CRI-O.
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service_cidr=$(openstack --os-cloud devstack-admin \
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--os-region "$REGION_NAME" \
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subnet show "$KURYR_NEUTRON_DEFAULT_SERVICE_SUBNET" \
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@ -11,6 +11,14 @@
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# License for the specific language governing permissions and limitations
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# under the License.
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function container_runtime {
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if [[ ${CONTAINER_ENGINE} == 'crio' ]]; then
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sudo podman "$@"
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else
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docker "$@"
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fi
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}
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function create_kuryr_account {
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if is_service_enabled kuryr-kubernetes; then
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create_service_user "kuryr" "admin"
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@ -551,59 +559,71 @@ function run_k8s_api {
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cluster_ip_range="$service_cidr"
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fi
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run_container kubernetes-api \
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--net host \
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--restart on-failure \
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--volume="${KURYR_HYPERKUBE_DATA_DIR}:/srv/kubernetes:rw" \
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"${KURYR_HYPERKUBE_IMAGE}:${KURYR_HYPERKUBE_VERSION}" \
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/hyperkube apiserver \
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--service-cluster-ip-range="${cluster_ip_range}" \
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--insecure-bind-address=0.0.0.0 \
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--insecure-port="${KURYR_K8S_API_PORT}" \
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--etcd-servers="http://${SERVICE_HOST}:${ETCD_PORT}" \
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--admission-control=NamespaceLifecycle,LimitRanger,ServiceAccount,ResourceQuota \
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--client-ca-file=/srv/kubernetes/ca.crt \
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--basic-auth-file=/srv/kubernetes/basic_auth.csv \
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--min-request-timeout=300 \
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--tls-cert-file=/srv/kubernetes/server.cert \
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--tls-private-key-file=/srv/kubernetes/server.key \
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--token-auth-file=/srv/kubernetes/known_tokens.csv \
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--allow-privileged=true \
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--v=2 \
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--logtostderr=true
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local command
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command=(--net=host
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--volume=${KURYR_HYPERKUBE_DATA_DIR}:/srv/kubernetes:rw)
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if [[ ${CONTAINER_ENGINE} == 'docker' ]]; then
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command+=(--restart=on-failure)
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fi
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command+=(${KURYR_HYPERKUBE_IMAGE}:${KURYR_HYPERKUBE_VERSION}
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/hyperkube apiserver
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--service-cluster-ip-range=${cluster_ip_range}
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--insecure-bind-address=0.0.0.0
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--insecure-port=${KURYR_K8S_API_PORT}
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--etcd-servers=http://${SERVICE_HOST}:${ETCD_PORT}
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--admission-control=NamespaceLifecycle,LimitRanger,ServiceAccount,ResourceQuota
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--client-ca-file=/srv/kubernetes/ca.crt
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--basic-auth-file=/srv/kubernetes/basic_auth.csv
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--min-request-timeout=300
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--tls-cert-file=/srv/kubernetes/server.cert
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--tls-private-key-file=/srv/kubernetes/server.key
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--token-auth-file=/srv/kubernetes/known_tokens.csv
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--allow-privileged=true
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--v=2
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--logtostderr=true)
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run_container kubernetes-api "${command[@]}"
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}
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function run_k8s_controller_manager {
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# Runs Hyperkube's Kubernetes controller manager
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wait_for "Kubernetes API Server" "$KURYR_K8S_API_URL"
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run_container kubernetes-controller-manager \
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--net host \
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--volume="${KURYR_HYPERKUBE_DATA_DIR}:/srv/kubernetes:rw" \
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--restart on-failure \
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"${KURYR_HYPERKUBE_IMAGE}:${KURYR_HYPERKUBE_VERSION}" \
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/hyperkube controller-manager \
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--master="$KURYR_K8S_API_URL" \
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--service-account-private-key-file=/srv/kubernetes/server.key \
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--root-ca-file=/srv/kubernetes/ca.crt \
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--min-resync-period=3m \
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--v=2 \
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--logtostderr=true
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local command
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command=(--net=host
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--volume=${KURYR_HYPERKUBE_DATA_DIR}:/srv/kubernetes:rw)
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if [[ ${CONTAINER_ENGINE} == 'docker' ]]; then
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command+=(--restart=on-failure)
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fi
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command+=(${KURYR_HYPERKUBE_IMAGE}:${KURYR_HYPERKUBE_VERSION}
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/hyperkube controller-manager
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--master=$KURYR_K8S_API_URL
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--service-account-private-key-file=/srv/kubernetes/server.key
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--root-ca-file=/srv/kubernetes/ca.crt
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--min-resync-period=3m
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--v=2
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--logtostderr=true)
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run_container kubernetes-controller-manager "${command[@]}"
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}
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function run_k8s_scheduler {
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# Runs Hyperkube's Kubernetes scheduler
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wait_for "Kubernetes API Server" "$KURYR_K8S_API_URL"
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run_container kubernetes-scheduler \
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--net host \
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--volume="${KURYR_HYPERKUBE_DATA_DIR}:/srv/kubernetes:rw" \
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--restart on-failure \
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"${KURYR_HYPERKUBE_IMAGE}:${KURYR_HYPERKUBE_VERSION}" \
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/hyperkube scheduler \
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--master="$KURYR_K8S_API_URL" \
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--v=2 \
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--logtostderr=true
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local command
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command=(--net=host
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--volume=${KURYR_HYPERKUBE_DATA_DIR}:/srv/kubernetes:rw)
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if [[ ${CONTAINER_ENGINE} == 'docker' ]]; then
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command+=(--restart=on-failure)
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fi
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command+=(${KURYR_HYPERKUBE_IMAGE}:${KURYR_HYPERKUBE_VERSION}
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/hyperkube scheduler
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--master=$KURYR_K8S_API_URL
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--v=2
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--logtostderr=true)
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run_container kubernetes-scheduler "${command[@]}"
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}
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function prepare_kubeconfig {
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@ -622,16 +642,24 @@ function extract_hyperkube {
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tmp_loopback_cni_path="/tmp/loopback"
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tmp_nsenter_path="/tmp/nsenter"
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hyperkube_container=$(docker run -d \
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hyperkube_container=$(container_runtime run -d \
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--net host \
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"${KURYR_HYPERKUBE_IMAGE}:${KURYR_HYPERKUBE_VERSION}" \
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/bin/false)
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docker cp "${hyperkube_container}:/hyperkube" "$tmp_hyperkube_path"
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docker cp "${hyperkube_container}:/opt/cni/bin/loopback" \
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"$tmp_loopback_cni_path"
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docker cp "${hyperkube_container}:/usr/bin/nsenter" "$tmp_nsenter_path"
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if [[ ${CONTAINER_ENGINE} == 'crio' ]]; then
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mnt=`container_runtime mount "${hyperkube_container}"`
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sudo cp "${mnt}/hyperkube" "$tmp_hyperkube_path"
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sudo cp "${mnt}/opt/cni/bin/loopback" "$tmp_loopback_cni_path"
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sudo cp "${mnt}/usr/bin/nsenter" "$tmp_nsenter_path"
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container_runtime umount ${hyperkube_container}
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else
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container_runtime cp "${hyperkube_container}:/hyperkube" "$tmp_hyperkube_path"
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container_runtime cp "${hyperkube_container}:/opt/cni/bin/loopback" \
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"$tmp_loopback_cni_path"
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container_runtime cp "${hyperkube_container}:/usr/bin/nsenter" "$tmp_nsenter_path"
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fi
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docker rm --force "$hyperkube_container"
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container_runtime rm --force "$hyperkube_container"
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sudo install -o "$STACK_USER" -m 0555 -D "$tmp_hyperkube_path" \
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"$KURYR_HYPERKUBE_BINARY"
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sudo install -o "$STACK_USER" -m 0555 -D "$tmp_loopback_cni_path" \
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@ -663,16 +691,12 @@ function run_k8s_kubelet {
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# adding Python and all our CNI/binding dependencies.
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local command
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local minor_version
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local cgroup_driver
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cgroup_driver="$(docker info|awk '/Cgroup/ {print $NF}')"
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sudo mkdir -p "${KURYR_HYPERKUBE_DATA_DIR}/"{kubelet,kubelet.cert}
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command="$KURYR_HYPERKUBE_BINARY kubelet\
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--kubeconfig=${HOME}/.kube/config \
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--allow-privileged=true \
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--v=2 \
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--cgroup-driver=$cgroup_driver \
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--address=0.0.0.0 \
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--enable-server \
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--network-plugin=cni \
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@ -681,6 +705,22 @@ function run_k8s_kubelet {
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--cert-dir=${KURYR_HYPERKUBE_DATA_DIR}/kubelet.cert \
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--root-dir=${KURYR_HYPERKUBE_DATA_DIR}/kubelet"
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if [[ ${CONTAINER_ENGINE} == 'docker' ]]; then
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command+=" --cgroup-driver $(docker info|awk '/Cgroup/ {print $NF}')"
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elif [[ ${CONTAINER_ENGINE} == 'crio' ]]; then
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local crio_conf
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crio_conf=/etc/crio/crio.conf
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command+=" --cgroup-driver=$(iniget ${crio_conf} crio.runtime cgroup_manager)"
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command+=" --container-runtime=remote --container-runtime-endpoint=unix:///var/run/crio/crio.sock --runtime-request-timeout=10m"
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# We need to reconfigure CRI-O in this case as well.
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# FIXME(dulek): This should probably go to devstack-plugin-container
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iniset -sudo ${crio_conf} crio.network network_dir \"${CNI_CONF_DIR}\"
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iniset -sudo ${crio_conf} crio.network plugin_dir \"${CNI_BIN_DIR}\"
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sudo systemctl --no-block restart crio.service
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fi
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declare -r min_not_require_kubeconfig_ver="1.10.0"
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if [[ "$KURYR_HYPERKUBE_VERSION" == "$(echo -e "${KURYR_HYPERKUBE_VERSION}\n${min_not_require_kubeconfig_ver}" | sort -V | head -n 1)" ]]; then
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# Version 1.10 did away with that config option
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5
releasenotes/notes/cri-o-support-ab7e810775754ea7.yaml
Normal file
5
releasenotes/notes/cri-o-support-ab7e810775754ea7.yaml
Normal file
@ -0,0 +1,5 @@
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---
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features:
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- |
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Added support for using cri-o (and podman & buildah) as container engine in
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both container images and DevStack.
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@ -13,6 +13,7 @@ function print_usage() {
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echo "-c/--conf-dir Specify the path where to place the CNI configuration"
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echo "-t/--tag Specify string to use as the tag part of the container image name, i.e., kuryr/cni:tag"
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echo "-D/--no-daemon Do not run CNI as a daemon"
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echo "-p/--podman Use podman instead of docker to build image"
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}
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for arg in "$@"; do
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@ -24,6 +25,7 @@ for arg in "$@"; do
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"--dockerfile") set -- "$@" "-f" ;;
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"--tag") set -- "$@" "-t" ;;
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"--no-daemon") set -- "$@" "-D" ;;
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"--podman") set -- "$@" "-p" ;;
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"--"*) print_usage "$arg" >&2; exit 1 ;;
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*) set -- "$@" "$arg"
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esac
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@ -34,16 +36,20 @@ dockerfile="cni.Dockerfile"
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image_name="kuryr/cni"
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daemonized="True"
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build_args=()
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build_cmd="docker build"
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OPTIND=1
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while getopts "hf:b:c:t:D" opt; do
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while getopts "hf:b:c:t:D:p" opt; do
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case "$opt" in
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"h") print_usage; exit 0 ;;
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"D") daemonized=False ;;
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"f") dockerfile=${OPTARG} ;;
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"b") build_args+=('--build-arg' "CNI_BIN_DIR_PATH=${OPTARG}") ;;
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"c") build_args+=('--build-arg' "CNI_CONFIG_DIR_PATH=${OPTARG}") ;;
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# Until https://github.com/containers/buildah/issues/1206 is resolved
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# we need to use buildah directly.
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"p") build_cmd="sudo buildah bud" && image_name="docker.io/kuryr/cni" ;;
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"t") image_name=${image_name}:${OPTARG} ;;
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"?") print_usage >&2; exit 1 ;;
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esac
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@ -52,7 +58,7 @@ done
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shift $((OPTIND - 1))
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# create cni daemonset image
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docker build -t "$image_name" \
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${build_cmd} -t "$image_name" \
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--build-arg "CNI_DAEMON=$daemonized" \
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"${build_args[@]}" \
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-f "$dockerfile" .
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