Merge pull request #3061 from okamototk/crio

cri-o support

cluster.yml

@@ -33,7 +33,8 @@
   roles:
     - { role: kubespray-defaults}
     - { role: kubernetes/preinstall, tags: preinstall }
-    - { role: docker, tags: docker, when: manage_docker|default(true) }
+    - { role: docker, tags: docker, when: container_manager == 'docker' }
+    - { role: cri-o, tags: crio, when: container_manager == 'crio' }
     - role: rkt
       tags: rkt
       when: "'rkt' in [etcd_deployment_type, kubelet_deployment_type, vault_deployment_type]"

docs/cri-o.md

@@ -0,0 +1,31 @@
+cri-o
+===============
+
+cri-o is container developed by kubernetes project.
+Currently, only basic function is supported for cri-o.
+
+* cri-o is supported kubernetes 1.11.1 or later.
+* helm and other feature may not be supported due to docker dependency.
+* scale.yml and upgrade-cluster.yml are not supported.
+
+helm and other feature may not be supported due to docker dependency.
+
+Use cri-o instead of docker, set following variable:
+
+#### all.yml
+
+```
+kubeadm_enable: true
+...
+download_container: false
+skip_downloads: false
+```
+
+#### k8s-cluster.yml
+
+```
+etcd_deployment_type: host
+kubelet_deployment_type: host
+container_manager: crio
+```
+

inventory/sample/group_vars/all.yml

@@ -155,3 +155,7 @@ bin_dir: /usr/local/bin
 
 # Does coreos need auto upgrade, default is true
 #coreos_auto_upgrade: true
+
+# Set true to download and cache container
+#download_container: true
+

inventory/sample/group_vars/k8s-cluster.yml

@@ -135,6 +135,10 @@ skydns_server_secondary: "{{ kube_service_addresses|ipaddr('net')|ipaddr(4)|ipad
 dnsmasq_dns_server: "{{ kube_service_addresses|ipaddr('net')|ipaddr(2)|ipaddr('address') }}"
 dns_domain: "{{ cluster_name }}"
 
+# Container runtime
+# docker for docker and crio for cri-o.
+container_manager: docker
+
 # Path used to store Docker data
 docker_daemon_graph: "/var/lib/docker"
 

roles/cri-o/defaults/main.yml

@@ -0,0 +1,2 @@
+---
+crio_rhel_repo_base_url: 'https://cbs.centos.org/repos/paas7-openshift-origin311-candidate/x86_64/os/'

roles/cri-o/files/mounts.conf

@@ -0,0 +1 @@
+/usr/share/rhel/secrets:/run/secrets

roles/cri-o/tasks/main.yaml

@@ -0,0 +1,56 @@
+---
+- name: gather os specific variables
+  include_vars: "{{ item }}"
+  with_first_found:
+    - files:
+        - "{{ ansible_distribution|lower }}-{{ ansible_distribution_version|lower|replace('/', '_') }}.yml"
+        - "{{ ansible_distribution|lower }}-{{ ansible_distribution_release }}.yml"
+        - "{{ ansible_distribution|lower }}-{{ ansible_distribution_major_version|lower|replace('/', '_') }}.yml"
+        - "{{ ansible_distribution|lower }}.yml"
+        - "{{ ansible_os_family|lower }}-{{ ansible_architecture }}.yml"
+        - "{{ ansible_os_family|lower }}.yml"
+        - defaults.yml
+      paths:
+        - ../vars
+      skip: true
+  tags:
+    - facts
+
+- name: Add OpenShift Origin repository
+  yum_repository:
+    name: origin
+    description: OpenShift Origin Repo
+    baseurl: "{{ crio_rhel_repo_base_url }}"
+    gpgcheck: no
+  when: ansible_distribution in ["CentOS","RedHat"] and not is_atomic
+
+- name: Install cri-o packages
+  package:
+    name: "{{ item }}"
+    state: present
+  with_items: "{{ crio_packages }}"
+
+- name: Install cri-o config
+  template:
+    src: crio.conf.j2
+    dest: /etc/crio/crio.conf
+
+- name: Copy mounts.conf
+  copy:
+    src: mounts.conf
+    dest: /etc/containers/mounts.conf
+  when:
+    - ansible_os_family == 'RedHat'
+
+- name: Create directory for oci hooks
+  file:
+    path: /etc/containers/oci/hooks.d
+    state: directory
+    owner: root
+    mode: 0755
+
+- name: Install cri-o service
+  service:
+    name: "{{ crio_service }}"
+    enabled: yes
+    state: restarted

roles/cri-o/templates/crio.conf.j2

@@ -0,0 +1,234 @@
+
+# The "crio" table contains all of the server options.
+[crio]
+
+# CRI-O reads its storage defaults from the containers/storage configuration
+# file, /etc/containers/storage.conf. Modify storage.conf if you want to
+# change default storage for all tools that use containers/storage.  If you
+# want to modify just crio, you can change the storage configuration in this
+# file.
+
+# root is a path to the "root directory". CRIO stores all of its data,
+# including container images, in this directory.
+#root = "/var/lib/containers/storage"
+
+# run is a path to the "run directory". CRIO stores all of its state
+# in this directory.
+#runroot = "/var/run/containers/storage"
+
+# storage_driver select which storage driver is used to manage storage
+# of images and containers.
+storage_driver = "overlay2"
+
+# storage_option is used to pass an option to the storage driver.
+#storage_option = [
+#]
+
+# The "crio.api" table contains settings for the kubelet/gRPC interface.
+[crio.api]
+
+# listen is the path to the AF_LOCAL socket on which crio will listen.
+listen = "/var/run/crio/crio.sock"
+
+# stream_address is the IP address on which the stream server will listen
+stream_address = ""
+
+# stream_port is the port on which the stream server will listen
+stream_port = "10010"
+
+# stream_enable_tls enables encrypted tls transport of the stream server
+stream_enable_tls = false
+
+# stream_tls_cert is the x509 certificate file path used to serve the encrypted stream.
+# This file can change, and CRIO will automatically pick up the changes within 5 minutes.
+stream_tls_cert = ""
+
+# stream_tls_key is the key file path used to serve the encrypted stream.
+# This file can change, and CRIO will automatically pick up the changes within 5 minutes.
+stream_tls_key = ""
+
+# stream_tls_ca is the x509 CA(s) file used to verify and authenticate client
+# communication with the tls encrypted stream.
+# This file can change, and CRIO will automatically pick up the changes within 5 minutes.
+stream_tls_ca = ""
+
+# file_locking is whether file-based locking will be used instead of
+# in-memory locking
+file_locking = true
+
+# The "crio.runtime" table contains settings pertaining to the OCI
+# runtime used and options for how to set up and manage the OCI runtime.
+[crio.runtime]
+
+# runtime is the OCI compatible runtime used for trusted container workloads.
+# This is a mandatory setting as this runtime will be the default one
+# and will also be used for untrusted container workloads if
+# runtime_untrusted_workload is not set.
+runtime = "/usr/bin/runc"
+
+# runtime_untrusted_workload is the OCI compatible runtime used for untrusted
+# container workloads. This is an optional setting, except if
+# default_container_trust is set to "untrusted".
+runtime_untrusted_workload = ""
+
+# default_workload_trust is the default level of trust crio puts in container
+# workloads. It can either be "trusted" or "untrusted", and the default
+# is "trusted".
+# Containers can be run through different container runtimes, depending on
+# the trust hints we receive from kubelet:
+# - If kubelet tags a container workload as untrusted, crio will try first to
+# run it through the untrusted container workload runtime. If it is not set,
+# crio will use the trusted runtime.
+# - If kubelet does not provide any information about the container workload trust
+# level, the selected runtime will depend on the default_container_trust setting.
+# If it is set to "untrusted", then all containers except for the host privileged
+# ones, will be run by the runtime_untrusted_workload runtime. Host privileged
+# containers are by definition trusted and will always use the trusted container
+# runtime. If default_container_trust is set to "trusted", crio will use the trusted
+# container runtime for all containers.
+default_workload_trust = "trusted"
+
+# no_pivot instructs the runtime to not use pivot_root, but instead use MS_MOVE
+no_pivot = false
+
+# conmon is the path to conmon binary, used for managing the runtime.
+conmon = "/usr/libexec/crio/conmon"
+
+# conmon_env is the environment variable list for conmon process,
+# used for passing necessary environment variable to conmon or runtime.
+conmon_env = [
+	"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
+]
+
+# selinux indicates whether or not SELinux will be used for pod
+# separation on the host. If you enable this flag, SELinux must be running
+# on the host.
+selinux = {{ (preinstall_selinux_state == 'enforcing')|lower }}
+
+# seccomp_profile is the seccomp json profile path which is used as the
+# default for the runtime.
+seccomp_profile = "/etc/crio/seccomp.json"
+
+# apparmor_profile is the apparmor profile name which is used as the
+# default for the runtime.
+apparmor_profile = "crio-default"
+
+# cgroup_manager is the cgroup management implementation to be used
+# for the runtime.
+cgroup_manager = "cgroupfs"
+
+# default_capabilities is the list of capabilities to add and can be modified here.
+# If capabilities below is commented out, the default list of capabilities defined in the
+# spec will be added.
+# If capabilities is empty below, only the capabilities defined in the container json
+# file by the user/kube will be added.
+default_capabilities = [
+	"CHOWN", 
+	"DAC_OVERRIDE", 
+	"FSETID", 
+	"FOWNER", 
+	"NET_RAW", 
+	"SETGID", 
+	"SETUID", 
+	"SETPCAP", 
+	"NET_BIND_SERVICE", 
+	"SYS_CHROOT", 
+	"KILL", 
+]
+
+# hooks_dir_path is the oci hooks directory for automatically executed hooks
+hooks_dir_path = "/usr/share/containers/oci/hooks.d"
+
+# default_mounts is the mounts list to be mounted for the container when created
+# deprecated, will be taken out in future versions, add default mounts to either
+# /usr/share/containers/mounts.conf or /etc/containers/mounts.conf
+default_mounts = [
+]
+
+# CRI-O reads its default mounts from the following two files:
+# 1) /etc/containers/mounts.conf - this is the override file, where users can
+# either add in their own default mounts, or override the default mounts shipped
+# with the package.
+# 2) /usr/share/containers/mounts.conf - this is the default file read for mounts.
+# If you want CRI-O to read from a different, specific mounts file, you can change
+# the default_mounts_file path right below. Note, if this is done, CRI-O will only add
+# mounts it finds in this file.
+
+# default_mounts_file is the file path holding the default mounts to be mounted for the
+# container when created.
+# default_mounts_file = ""
+
+# pids_limit is the number of processes allowed in a container
+pids_limit = 1024
+
+# log_size_max is the max limit for the container log size in bytes.
+# Negative values indicate that no limit is imposed.
+log_size_max = -1
+
+# read-only indicates whether all containers will run in read-only mode
+read_only = false
+
+# The "crio.image" table contains settings pertaining to the
+# management of OCI images.
+
+# uid_mappings specifies the UID mappings to have in the user namespace.
+# A range is specified in the form containerUID:HostUID:Size.  Multiple
+# ranges are separed by comma.
+uid_mappings = ""
+
+# gid_mappings specifies the GID mappings to have in the user namespace.
+# A range is specified in the form containerGID:HostGID:Size.  Multiple
+# ranges are separed by comma.
+gid_mappings = ""
+
+[crio.image]
+
+# default_transport is the prefix we try prepending to an image name if the
+# image name as we receive it can't be parsed as a valid source reference
+default_transport = "docker://"
+
+# pause_image is the image which we use to instantiate infra containers.
+pause_image = "docker://k8s.gcr.io/pause:3.1"
+
+# pause_command is the command to run in a pause_image to have a container just
+# sit there.  If the image contains the necessary information, this value need
+# not be specified.
+pause_command = "/pause"
+
+# signature_policy is the name of the file which decides what sort of policy we
+# use when deciding whether or not to trust an image that we've pulled.
+# Outside of testing situations, it is strongly advised that this be left
+# unspecified so that the default system-wide policy will be used.
+signature_policy = ""
+
+# image_volumes controls how image volumes are handled.
+# The valid values are mkdir and ignore.
+image_volumes = "mkdir"
+
+# CRI-O reads its configured registries defaults from the containers/image configuration
+# file, /etc/containers/registries.conf. Modify registries.conf if you want to
+# change default registries for all tools that use containers/image.  If you
+# want to modify just crio, you can change the registies configuration in this
+# file.
+
+# insecure_registries is used to skip TLS verification when pulling images.
+insecure_registries = [
+  "{{ kube_service_addresses }}"
+]
+
+# registries is used to specify a comma separated list of registries to be used
+# when pulling an unqualified image (e.g. fedora:rawhide).
+registries = [
+  "docker.io"
+]
+
+# The "crio.network" table contains settings pertaining to the
+# management of CNI plugins.
+[crio.network]
+
+# network_dir is is where CNI network configuration
+# files are stored.
+network_dir = "/etc/cni/net.d/"
+
+# plugin_dir is is where CNI plugin binaries are stored.
+plugin_dir = "/opt/cni/bin/"

roles/cri-o/vars/redhat.yml

@@ -0,0 +1,7 @@
+---
+crio_packages:
+  - cri-o
+  - cri-tools
+  - oci-systemd-hook
+
+crio_service: crio

roles/download/defaults/main.yml

@@ -10,6 +10,9 @@ skip_downloads: false
 download_run_once: False
 download_compress: 1
 
+# if this is set to true will download container
+download_container: True
+
 # if this is set to true, uses the localhost for download_run_once mode
 # (requires docker and sudo to access docker). You may want this option for
 # local caching of docker images or for Container Linux by CoreOS cluster nodes.
@@ -48,8 +51,12 @@ cilium_version: "v1.2.0"
 # Download URLs
 kubeadm_download_url: "https://storage.googleapis.com/kubernetes-release/release/{{ kubeadm_version }}/bin/linux/{{ image_arch }}/kubeadm"
 vault_download_url: "https://releases.hashicorp.com/vault/{{ vault_version }}/vault_{{ vault_version }}_linux_{{ image_arch }}.zip"
+etcd_download_url: "https://github.com/coreos/etcd/releases/download/{{ etcd_version }}/etcd-{{ etcd_version }}-linux-amd64.tar.gz"
+hyperkube_download_url: "https://storage.googleapis.com/kubernetes-release/release/{{ kube_version }}/bin/linux/amd64/hyperkube"
 
 # Checksums
+etcd_checksum: b729db0732448064271ea6fdcb901773c4fe917763ca07776f22d0e5e0bd4097
+hyperkube_checksum: d727f8cae3fc26b1add9b4ff0d4d9b99605544ff7fb3baeecdca394362adbfb8
 kubeadm_checksum: 6b17720a65b8ff46efe92a5544f149c39a221910d89939838d75581d4e6924c0
 vault_binary_checksum: 3c4d70ba71619a43229e65c67830e30e050eab7a81ac6b28325ff707e5914188
 
@@ -173,6 +180,19 @@ downloads:
     sha256: "{{ etcd_digest_checksum|default(None) }}"
     groups:
       - etcd
+  etcd_file:
+    enabled: true
+    file: true
+    version: "{{ etcd_version }}"
+    dest: "etcd-{{ etcd_version }}-linux-amd64.tar.gz"
+    sha256: "{{ etcd_checksum }}"
+    source_url: "{{ etcd_download_url }}"
+    url: "{{ etcd_download_url }}"
+    unarchive: true
+    owner: "root"
+    mode: "0755"
+    groups:
+      - etcd
   kubeadm:
     enabled: "{{ kubeadm_enabled }}"
     file: true
@@ -194,6 +214,19 @@ downloads:
     sha256: "{{ hyperkube_digest_checksum|default(None) }}"
     groups:
       - k8s-cluster
+  hyperkube_file:
+    enabled: true
+    file: true
+    version: "{{ kube_version }}"
+    dest: "hyperkube"
+    sha256: "{{ hyperkube_checksum }}"
+    source_url: "{{ hyperkube_download_url }}"
+    url: "{{ hyperkube_download_url }}"
+    unarchive: false
+    owner: "root"
+    mode: "0755"
+    groups:
+      - k8s-cluster
   cilium:
     enabled: "{{ kube_network_plugin == 'cilium' }}"
     container: true

roles/download/tasks/download_prep.yml

@@ -7,6 +7,7 @@
   failed_when: false
   changed_when: false
   check_mode: no
+  when: download_container
 
 - name: container_download | Create dest directory for saved/loaded container images
   file:
@@ -15,6 +16,7 @@
     recurse: yes
     mode: 0755
     owner: "{{ansible_ssh_user|default(ansible_user_id)}}"
+  when: download_container
 
 - name: container_download | create local directory for saved/loaded container images
   file:
@@ -28,5 +30,6 @@
   when:
     - download_run_once
     - download_delegate == 'localhost'
+    - download_container
   tags:
     - localhost

roles/download/tasks/main.yml

@@ -11,6 +11,7 @@
   when:
     - not skip_downloads|default(false)
     - item.value.enabled
+    - (not (item.value.container|default(False))) or (item.value.container and download_container)
 
 - name: "Sync container"
   include_tasks: sync_container.yml

roles/etcd/tasks/install_host.yml

@@ -1,13 +1,21 @@
 ---
-- name: Install | Copy etcdctl and etcd binary from docker container
-  command: sh -c "{{ docker_bin_dir }}/docker rm -f etcdctl-binarycopy;
-           {{ docker_bin_dir }}/docker create --name etcdctl-binarycopy {{ etcd_image_repo }}:{{ etcd_image_tag }} &&
-           {{ docker_bin_dir }}/docker cp etcdctl-binarycopy:/usr/local/bin/etcdctl {{ bin_dir }}/etcdctl &&
-           {{ docker_bin_dir }}/docker cp etcdctl-binarycopy:/usr/local/bin/etcd {{ bin_dir }}/etcd &&
-           {{ docker_bin_dir }}/docker rm -f etcdctl-binarycopy"
-  register: etcd_task_result
-  until: etcd_task_result.rc == 0
-  retries: 4
-  delay: "{{ retry_stagger | random + 3 }}"
+- name: install | Copy etcd binary from download dir
+  shell: |
+    rsync -piu "{{ local_release_dir }}/etcd-{{ etcd_version }}-linux-amd64/etcd" "{{ bin_dir }}/etcd"
+    rsync -piu "{{ local_release_dir }}/etcd-{{ etcd_version }}-linux-amd64/etcdctl" "{{ bin_dir }}/etcdctl"
   changed_when: false
   when: etcd_cluster_setup
+
+- name: install | Set etcd binary permissions
+  file:
+    path: "{{ bin_dir }}/etcd"
+    mode: "0755"
+    state: file
+  when: etcd_cluster_setup
+
+- name: install | Set etcdctl binary permissions
+  file:
+    path: "{{ bin_dir }}/etcdctl"
+    mode: "0755"
+    state: file
+  when: etcd_cluster_setup

roles/kubernetes/kubeadm/templates/kubeadm-client.conf.v1alpha2.j2

@@ -15,3 +15,6 @@ discoveryTokenAPIServers:
 discoveryTokenUnsafeSkipCAVerification: true
 nodeRegistration:
   name: {{ inventory_hostname  }}
+{% if container_manager == 'crio' %}
+  criSocket: /var/run/crio/crio.sock
+{% endif %}

roles/kubernetes/master/tasks/kubeadm-setup.yml

@@ -97,6 +97,14 @@
     kubeadm_config_api_fqdn: "{{ apiserver_loadbalancer_domain_name|default('lb-apiserver.kubernetes.local') }}"
   when: loadbalancer_apiserver is defined
 
+- name: kubeadm | Copy etcd ca file as k8s ca
+  command: "cp -T {{ etcd_cert_dir }}/ca.pem {{ kube_config_dir }}/ssl/etcd/ca.crt"
+  changed_when: false
+
+- name: kubeadm | Copy etcd cakey as k8s cakey
+  command: "cp -T {{ etcd_cert_dir }}/ca-key.pem {{ kube_config_dir }}/ssl/etcd/ca.key"
+  changed_when: false
+
 - name: kubeadm | Create kubeadm config
   template:
     src: "kubeadm-config.{{ kubeadmConfig_api_version }}.yaml.j2"
@@ -104,7 +112,7 @@
   register: kubeadm_config
 
 - name: kubeadm | Initialize first master
-  command: timeout -k 240s 240s {{ bin_dir }}/kubeadm init --config={{ kube_config_dir }}/kubeadm-config.{{ kubeadmConfig_api_version }}.yaml --ignore-preflight-errors=all
+  command: timeout -k 600s 600s {{ bin_dir }}/kubeadm init --config={{ kube_config_dir }}/kubeadm-config.{{ kubeadmConfig_api_version }}.yaml --ignore-preflight-errors=all
   register: kubeadm_init
   # Retry is because upload config sometimes fails
   retries: 3
@@ -114,7 +122,7 @@
 
 - name: kubeadm | Upgrade first master
   command: >-
-    timeout -k 240s 240s
+    timeout -k 600s 600s
     {{ bin_dir }}/kubeadm
     upgrade apply -y {{ kube_version }}
     --config={{ kube_config_dir }}/kubeadm-config.{{ kubeadmConfig_api_version }}.yaml
@@ -167,7 +175,7 @@
   when: inventory_hostname != groups['kube-master']|first
 
 - name: kubeadm | Init other uninitialized masters
-  command: timeout -k 240s 240s {{ bin_dir }}/kubeadm init --config={{ kube_config_dir }}/kubeadm-config.{{ kubeadmConfig_api_version }}.yaml --ignore-preflight-errors=all
+  command: timeout -k 600s 600s {{ bin_dir }}/kubeadm init --config={{ kube_config_dir }}/kubeadm-config.{{ kubeadmConfig_api_version }}.yaml --ignore-preflight-errors=all
   register: kubeadm_init
   when: inventory_hostname != groups['kube-master']|first and not kubeadm_ca.stat.exists
   failed_when: kubeadm_init.rc != 0 and "field is immutable" not in kubeadm_init.stderr
@@ -175,7 +183,7 @@
 
 - name: kubeadm | Upgrade other masters
   command: >-
-    timeout -k 240s 240s
+    timeout -k 600s 600s
     {{ bin_dir }}/kubeadm
     upgrade apply -y {{ kube_version }}
     --config={{ kube_config_dir }}/kubeadm-config.{{ kubeadmConfig_api_version }}.yaml

roles/kubernetes/master/tasks/main.yml

@@ -9,27 +9,19 @@
 - import_tasks: encrypt-at-rest.yml
   when: kube_encrypt_secret_data
 
-- name: Compare host kubectl with hyperkube container
-  command: "{{ docker_bin_dir }}/docker run --rm -v {{ bin_dir }}:/systembindir {{ hyperkube_image_repo }}:{{ hyperkube_image_tag }} /usr/bin/cmp /hyperkube /systembindir/kubectl"
-  register: kubectl_task_compare_result
-  until: kubectl_task_compare_result.rc in [0,1,2]
-  retries: 4
-  delay: "{{ retry_stagger | random + 3 }}"
+- name: install | Copy kubectl binary from download dir
+  command: rsync -piu "{{ local_release_dir }}/hyperkube" "{{ bin_dir }}/kubectl"
   changed_when: false
-  failed_when: "kubectl_task_compare_result.rc not in [0,1,2]"
   tags:
     - hyperkube
     - kubectl
     - upgrade
 
-- name: Copy kubectl from hyperkube container
-  command: "{{ docker_bin_dir }}/docker run --rm -v {{ bin_dir }}:/systembindir {{ hyperkube_image_repo }}:{{ hyperkube_image_tag }} /bin/cp -f /hyperkube /systembindir/kubectl"
-  when: kubectl_task_compare_result.rc != 0
-  register: kubectl_task_result
-  until: kubectl_task_result.rc == 0
-  retries: 4
-  delay: "{{ retry_stagger | random + 3 }}"
-  changed_when: false
+- name: install | Set kubectl binary permissions
+  file:
+    path: "{{ bin_dir }}/kubectl"
+    mode: "0755"
+    state: file
   tags:
     - hyperkube
     - kubectl
@@ -37,7 +29,7 @@
 
 - name: Install kubectl bash completion
   shell: "{{ bin_dir }}/kubectl completion bash >/etc/bash_completion.d/kubectl.sh"
-  when: kubectl_task_compare_result.rc != 0 and ansible_os_family in ["Debian","RedHat"]
+  when: ansible_os_family in ["Debian","RedHat"]
   tags:
     - kubectl
 

roles/kubernetes/master/templates/kubeadm-config.v1alpha1.yaml.j2

@@ -1,4 +1,4 @@
-apiVersion: kubeadm.k8s.io/v1alpha1
+apiVersion: kubeadm.k8s.io/v1alpha2
 kind: MasterConfiguration
 api:
   advertiseAddress: {{ ip | default(ansible_default_ipv4.address) }}
@@ -7,6 +7,7 @@ api:
   controlPlaneEndpoint: {{ kubeadm_config_api_fqdn }}
 {% endif %}
 etcd:
+  external:
       endpoints:
 {% for endpoint in etcd_access_addresses.split(',') %}
       - {{ endpoint }}
@@ -27,6 +28,12 @@ kubeProxy:
 {% if kube_proxy_mode == 'ipvs' and kube_version | version_compare('v1.10', '<') %}
     featureGates: SupportIPVSProxyMode=true
     mode: ipvs
+{% elif kube_proxy_mode == 'ipvs' %}
+kubeProxy:
+  config:
+    featureGates:
+      SupportIPVSProxyMode: true
+    mode: ipvs
 {% endif %}
 {% if kube_proxy_nodeport_addresses %}
     nodePortAddresses: [{{ kube_proxy_nodeport_addresses_cidr }}]

roles/kubernetes/master/templates/kubeadm-config.v1alpha2.yaml.j2

@@ -138,3 +138,6 @@ nodeRegistration:
   taints:
   - effect: NoSchedule
     key: node-role.kubernetes.io/master
+{% if container_manager == 'crio' %}
+  criSocket: /var/run/crio/crio.sock
+{% endif %}

roles/kubernetes/node/defaults/main.yml

@@ -31,6 +31,11 @@ kubelet_cgroups_per_qos: true
 # Set to empty to avoid cgroup creation
 kubelet_enforce_node_allocatable: "\"\""
 
+# Set runtime cgroups
+kubelet_runtime_cgroups: "/systemd/system.slice"
+# Set kubelet cgroups
+kubelet_kubelet_cgroups: "/systemd/system.slice"
+
 # Set false to enable sharing a pid namespace between containers in a pod.
 # Note that PID namespace sharing requires docker >= 1.13.1.
 kubelet_disable_shared_pid: true

roles/kubernetes/node/tasks/install_host.yml

@@ -1,23 +1,17 @@
 ---
-- name: install | Compare host kubelet with hyperkube container
-  command: "{{ docker_bin_dir }}/docker run --rm -v {{ bin_dir }}:/systembindir {{ hyperkube_image_repo }}:{{ hyperkube_image_tag }} /usr/bin/cmp /hyperkube /systembindir/kubelet"
-  register: kubelet_task_compare_result
-  until: kubelet_task_compare_result.rc in [0,1,2]
-  retries: 4
-  delay: "{{ retry_stagger | random + 3 }}"
+
+- name: install | Copy kubelet binary from download dir
+  command: rsync -piu "{{ local_release_dir }}/hyperkube" "{{ bin_dir }}/kubelet"
   changed_when: false
-  failed_when: "kubelet_task_compare_result.rc not in [0,1,2]"
   tags:
     - hyperkube
     - upgrade
 
-- name: install | Copy kubelet from hyperkube container
-  command: "{{ docker_bin_dir }}/docker run --rm -v {{ bin_dir }}:/systembindir {{ hyperkube_image_repo }}:{{ hyperkube_image_tag }} /bin/cp -f /hyperkube /systembindir/kubelet"
-  when: kubelet_task_compare_result.rc != 0
-  register: kubelet_task_result
-  until: kubelet_task_result.rc == 0
-  retries: 4
-  delay: "{{ retry_stagger | random + 3 }}"
+- name: install | Set kubelet binary permissions
+  file:
+    path: "{{ bin_dir }}/kubelet"
+    mode: "0755"
+    state: file
   tags:
     - hyperkube
     - upgrade

roles/kubernetes/node/templates/kubelet.kubeadm.env.j2

@@ -34,7 +34,13 @@ KUBELET_HOSTNAME="--hostname-override={{ kube_override_hostname }}"
 --node-status-update-frequency={{ kubelet_status_update_frequency }} \
 --cgroup-driver={{ kubelet_cgroup_driver|default(kubelet_cgroup_driver_detected) }} \
 --max-pods={{ kubelet_max_pods }} \
+{% if container_manager == 'docker' %}
 --docker-disable-shared-pid={{ kubelet_disable_shared_pid }} \
+{% endif %}
+{% if container_manager == 'crio' %}
+--container-runtime=remote \
+--container-runtime-endpoint=/var/run/crio/crio.sock \
+{% endif %}
 --anonymous-auth=false \
 --read-only-port={{ kube_read_only_port }} \
 {% if kube_version | version_compare('v1.8', '<') %}
@@ -42,6 +48,7 @@ KUBELET_HOSTNAME="--hostname-override={{ kube_override_hostname }}"
 {% else %}
 --fail-swap-on={{ kubelet_fail_swap_on|default(true)}} \
 {% endif %}
+--runtime-cgroups={{ kubelet_runtime_cgroups }} --kubelet-cgroups={{ kubelet_kubelet_cgroups }} \
 {% endset %}
 
 {# Node reserved CPU/memory #}

roles/kubernetes/node/templates/kubelet.standard.env.j2

@@ -15,7 +15,9 @@ KUBELET_HOSTNAME="--hostname-override={{ kube_override_hostname }}"
 --cadvisor-port={{ kube_cadvisor_port }} \
 --pod-infra-container-image={{ pod_infra_image_repo }}:{{ pod_infra_image_tag }} \
 --node-status-update-frequency={{ kubelet_status_update_frequency }} \
+{% if container_manager == 'docker' %}
 --docker-disable-shared-pid={{ kubelet_disable_shared_pid }} \
+{% endif %}
 --client-ca-file={{ kube_cert_dir }}/ca.pem \
 --tls-cert-file={{ kube_cert_dir }}/node-{{ inventory_hostname }}.pem \
 --tls-private-key-file={{ kube_cert_dir }}/node-{{ inventory_hostname }}-key.pem \
@@ -26,6 +28,10 @@ KUBELET_HOSTNAME="--hostname-override={{ kube_override_hostname }}"
 {% if kube_version | version_compare('v1.7', '<') %}
 --enable-cri={{ kubelet_enable_cri }} \
 {% endif %}
+{% if container_manager == 'crio' %}
+--container-runtime=remote \
+--container-runtime-endpoint=/var/run/crio/crio.sock \
+{% endif %}
 --cgroup-driver={{ kubelet_cgroup_driver|default(kubelet_cgroup_driver_detected) }} \
 --cgroups-per-qos={{ kubelet_cgroups_per_qos }} \
 --max-pods={{ kubelet_max_pods }} \

roles/kubespray-defaults/defaults/main.yaml

@@ -131,9 +131,8 @@ kube_apiserver_insecure_port: 8080
 # Aggregator
 kube_api_aggregator_routing: false
 
-# Docker options
-# Optionally do not run docker role
-manage_docker: true
+# Container for runtime
+container_manager: docker
 
 # Path used to store Docker data
 docker_daemon_graph: "/var/lib/docker"
@@ -366,3 +365,6 @@ etcd_events_peer_addresses: |-
   {%- endfor %}
 
 podsecuritypolicy_enabled: false
+etcd_heartbeat_interval: "250"
+etcd_election_timeout: "5000"
+etcd_snapshot_count: "10000"

roles/reset/tasks/main.yml

@@ -60,6 +60,16 @@
   tags:
     - docker
 
+- name: reset | remove all cri-o containers
+  shell: "crictl ps -aq | xargs -r crictl rm"
+  register: remove_all_crio_containers
+  retries: 4
+  until: remove_all_crio_containers.rc == 0
+  delay: 5
+  tags:
+    - crio
+  when: container_manager == 'crio'
+
 - name: reset | gather mounted kubelet dirs
   shell: mount | grep /var/lib/kubelet/ | awk '{print $3}' | tac
   check_mode: no

scale.yml

@@ -35,7 +35,9 @@
   roles:
     - { role: kubespray-defaults}
     - { role: kubernetes/preinstall, tags: preinstall }
-    - { role: docker, tags: docker, when: manage_docker|default(true) }
+
+    - { role: docker, tags: docker, when: container_manager == 'docker' }
+    - { role: cri-o, tags: crio, when: container_manager == 'crio' }
     - role: rkt
       tags: rkt
       when: "'rkt' in [etcd_deployment_type, kubelet_deployment_type, vault_deployment_type]"

upgrade-cluster.yml

@@ -34,7 +34,8 @@
   roles:
     - { role: kubespray-defaults}
     - { role: kubernetes/preinstall, tags: preinstall }
-    - { role: docker, tags: docker, when: manage_docker|default(true) }
+    - { role: docker, tags: docker, when: container_manager == 'docker' }
+    - { role: cri-o, tags: crio, when: container_manager == 'crio' }
     - role: rkt
       tags: rkt
       when: "'rkt' in [etcd_deployment_type, kubelet_deployment_type, vault_deployment_type]"