---
- name: Stop if either kube-master or kube-node group is empty
assert:
that: "groups.get('{{ item }}')"
with_items:
- kube-master
- kube-node
run_once: true
when: not ignore_assert_errors
- name: Stop if etcd group is empty in external etcd mode
assert:
that: groups.get('etcd')
fail_msg: "Group 'etcd' cannot be empty in external etcd mode"
run_once: true
when:
- not ignore_assert_errors
- not etcd_kubeadm_enabled
- name: Stop if non systemd OS type
assert:
that: ansible_service_mgr == "systemd"
when: not ignore_assert_errors
- name: Stop if unknown OS
assert:
that: ansible_os_family in ['RedHat', 'CentOS', 'Fedora', 'Ubuntu', 'Debian', 'Flatcar Container Linux by Kinvolk', 'Suse', 'ClearLinux', 'OracleLinux']
msg: "{{ ansible_os_family }} is not a known OS"
when: not ignore_assert_errors
- name: Stop if unknown network plugin
assert:
that: kube_network_plugin in ['calico', 'canal', 'flannel', 'weave', 'cloud', 'cilium', 'cni', 'contiv', 'ovn4nfv','kube-ovn', 'kube-router', 'macvlan']
msg: "{{ kube_network_plugin }} is not supported"
when:
- kube_network_plugin is defined
- not ignore_assert_errors
- name: Stop if incompatible network plugin and cloudprovider
assert:
that: kube_network_plugin != 'calico'
msg: "Azure and Calico are not compatible. See https://github.com/projectcalico/calicoctl/issues/949 for details."
when:
- cloud_provider is defined and cloud_provider == 'azure'
- not ignore_assert_errors
- name: Stop if unsupported version of Kubernetes
assert:
that: kube_version is version(kube_version_min_required, '>=')
msg: "The current release of Kubespray only support newer version of Kubernetes than {{ kube_version_min_required }} - You are trying to apply {{ kube_version }}"
when: not ignore_assert_errors
# simplify this items-list when https://github.com/ansible/ansible/issues/15753 is resolved
- name: "Stop if known booleans are set as strings (Use JSON format on CLI: -e \"{'key': true }\")"
assert:
that: item.value|type_debug == 'bool'
msg: "{{ item.value }} isn't a bool"
run_once: yes
with_items:
- { name: download_run_once, value: "{{ download_run_once }}" }
- { name: deploy_netchecker, value: "{{ deploy_netchecker }}" }
- { name: download_always_pull, value: "{{ download_always_pull }}" }
- { name: helm_enabled, value: "{{ helm_enabled }}" }
- { name: openstack_lbaas_enabled, value: "{{ openstack_lbaas_enabled }}" }
when: not ignore_assert_errors
- name: Stop if even number of etcd hosts
assert:
that: groups.etcd|length is not divisibleby 2
when:
- not ignore_assert_errors
- groups.get('etcd')
- inventory_hostname in groups['etcd']
- name: Stop if memory is too small for masters
assert:
that: ansible_memtotal_mb >= minimal_master_memory_mb
when:
- not ignore_assert_errors
- inventory_hostname in groups['kube-master']
- name: Stop if memory is too small for nodes
assert:
that: ansible_memtotal_mb >= minimal_node_memory_mb
when:
- not ignore_assert_errors
- inventory_hostname in groups['kube-node']
# This assertion will fail on the safe side: One can indeed schedule more pods
# on a node than the CIDR-range has space for when additional pods use the host
# network namespace. It is impossible to ascertain the number of such pods at
# provisioning time, so to establish a guarantee, we factor these out.
# NOTICE: the check blatantly ignores the inet6-case
- name: Guarantee that enough network address space is available for all pods
assert:
that: "{{ (kubelet_max_pods | default(110)) | int <= (2 ** (32 - kube_network_node_prefix | int)) - 2 }}"
msg: "Do not schedule more pods on a node than inet addresses are available."
when:
- not ignore_assert_errors
- inventory_hostname in groups['k8s-cluster']
- kube_network_node_prefix is defined
- kube_network_plugin != 'calico'
- name: Stop if ip var does not match local ips
assert:
that: ip in ansible_all_ipv4_addresses
msg: "'{{ ansible_all_ipv4_addresses }}' do not contain '{{ ip }}'"
when:
- not ignore_assert_errors
- ip is defined
- name: Stop if access_ip is not pingable
command: ping -c1 {{ access_ip }}
when:
- access_ip is defined
- not ignore_assert_errors
- name: Stop if RBAC is not enabled when dashboard is enabled
assert:
that: rbac_enabled
when:
- dashboard_enabled
- not ignore_assert_errors
- name: Stop if RBAC is not enabled when OCI cloud controller is enabled
assert:
that: rbac_enabled
when:
- cloud_provider is defined and cloud_provider == "oci"
- not ignore_assert_errors
- name: Stop if RBAC and anonymous-auth are not enabled when insecure port is disabled
assert:
that: rbac_enabled and kube_api_anonymous_auth
when:
- kube_apiserver_insecure_port == 0 and inventory_hostname in groups['kube-master']
- not ignore_assert_errors
- name: Stop if kernel version is too low
assert:
that: ansible_kernel.split('-')[0] is version('4.9.17', '>=')
when:
- kube_network_plugin == 'cilium' or cilium_deploy_additionally | default(false) | bool
- not ignore_assert_errors
- name: Stop if bad hostname
assert:
that: inventory_hostname is match("[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*$")
msg: "Hostname must consist of lower case alphanumeric characters, '.' or '-', and must start and end with an alphanumeric character"
when: not ignore_assert_errors
- name: check cloud_provider value
assert:
that: cloud_provider in ['generic', 'gce', 'aws', 'azure', 'openstack', 'vsphere', 'oci', 'external']
msg: "If set the 'cloud_provider' var must be set either to 'generic', 'gce', 'aws', 'azure', 'openstack', 'vsphere', or external"
when:
- cloud_provider is defined
- not ignore_assert_errors
tags:
- cloud-provider
- facts
- name: Ensure minimum calico version
assert:
that: calico_version is version(calico_min_version_required, '>=')
msg: "calico_version is too low. Minimum version {{ calico_min_version_required }}"
run_once: yes
when:
- kube_network_plugin == 'calico'
- name: Get current calico cluster version
shell: "set -o pipefail && {{ bin_dir }}/calicoctl.sh version | grep 'Cluster Version:' | awk '{ print $3}'"
args:
executable: /bin/bash
register: calico_version_on_server
async: 10
poll: 3
run_once: yes
changed_when: false
failed_when: false
when:
- kube_network_plugin == 'calico'
- name: Check that current calico version is enough for upgrade
assert:
that:
- calico_version_on_server.stdout is version(calico_min_version_required, '>=')
msg: "Your version of calico is not fresh enough for upgrade. Minimum version {{ calico_min_version_required }}"
when:
- kube_network_plugin == 'calico'
- 'calico_version_on_server.stdout is defined'
- calico_version_on_server.stdout
- inventory_hostname == groups['kube-master'][0]
run_once: yes
- name: "Check that cluster_id is set if calico_rr enabled"
assert:
that:
- cluster_id is defined
msg: "A unique cluster_id is required if using calico_rr"
when:
- kube_network_plugin == 'calico'
- peer_with_calico_rr
- inventory_hostname == groups['kube-master'][0]
run_once: yes
- name: "Check that calico_rr nodes are in k8s-cluster group"
assert:
that:
- '"k8s-cluster" in group_names'
msg: "calico-rr must be a child group of k8s-cluster group"
when:
- kube_network_plugin == 'calico'
- '"calico-rr" in group_names'
- name: "Check that kube_service_addresses is a network range"
assert:
that:
- kube_service_addresses | ipaddr('net')
msg: "kube_service_addresses = '{{ kube_service_addresses }}' is not a valid network range"
run_once: yes
- name: "Check that kube_pods_subnet is a network range"
assert:
that:
- kube_pods_subnet | ipaddr('net')
msg: "kube_pods_subnet = '{{ kube_pods_subnet }}' is not a valid network range"
run_once: yes
- name: "Check that kube_pods_subnet does not collide with kube_service_addresses"
assert:
that:
- kube_pods_subnet | ipaddr(kube_service_addresses) | string == 'None'
msg: "kube_pods_subnet cannot be the same network segment as kube_service_addresses"
run_once: yes
- name: Stop if unknown dns mode
assert:
that: dns_mode in ['coredns', 'coredns_dual', 'manual', 'none']
msg: "dns_mode can only be 'coredns', 'coredns_dual', 'manual' or 'none'"
when: dns_mode is defined
run_once: true
- name: Stop if unknown kube proxy mode
assert:
that: kube_proxy_mode in ['iptables', 'ipvs']
msg: "kube_proxy_mode can only be 'iptables' or 'ipvs'"
when: kube_proxy_mode is defined
run_once: true
- name: Stop if vault is chose
assert:
that: cert_management != 'vault'
msg: "Support for vault have been removed, please use 'script' or 'none'"
when: cert_management is defined
run_once: true
- name: Stop if unknown cert_management
assert:
that: cert_management|d('script') in ['script', 'none']
msg: "cert_management can only be 'script' or 'none'"
run_once: true
- name: Stop if unknown resolvconf_mode
assert:
that: resolvconf_mode in ['docker_dns', 'host_resolvconf', 'none']
msg: "resolvconf_mode can only be 'docker_dns', 'host_resolvconf' or 'none'"
when: resolvconf_mode is defined
run_once: true
- name: Stop if etcd deployment type is not host or docker
assert:
that: etcd_deployment_type in ['host', 'docker']
msg: "The etcd deployment type, 'etcd_deployment_type', must be host or docker"
run_once: true
- name: Stop if download_localhost is enabled but download_run_once is not
assert:
that: download_run_once
msg: "download_localhost requires enable download_run_once"
when: download_localhost
- name: Stop if download_localhost is enabled when container_manager not docker
assert:
that: container_manager == 'docker'
msg: "download_run_once support only for docker. See https://github.com/containerd/containerd/issues/4075 for details"
when: download_run_once or download_force_cache
- name: Stop if download_localhost is enabled for Flatcar Container Linux
assert:
that: ansible_os_family not in ["Flatcar Container Linux by Kinvolk"]
msg: "download_run_once not supported for Flatcar Container Linux"
when: download_run_once or download_force_cache