627 lines
23 KiB
Puppet
627 lines
23 KiB
Puppet
class platform::kubernetes::params (
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$enabled = true,
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# K8S version we are upgrading to (None if not in an upgrade)
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$upgrade_to_version = undef,
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# K8S version running on a host
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$version = undef,
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$node_ip = undef,
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$service_domain = undef,
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$dns_service_ip = undef,
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$host_labels = [],
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$k8s_cpuset = undef,
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$k8s_nodeset = undef,
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$k8s_platform_cpuset = undef,
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$k8s_reserved_mem = undef,
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$k8s_all_reserved_cpuset = undef,
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$k8s_cpu_mgr_policy = 'none',
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$k8s_topology_mgr_policy = 'best-effort',
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$k8s_cni_bin_dir = '/usr/libexec/cni',
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$k8s_vol_plugin_dir = '/usr/libexec/kubernetes/kubelet-plugins/volume/exec/',
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$join_cmd = undef,
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$oidc_issuer_url = undef,
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$oidc_client_id = undef,
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$oidc_username_claim = undef,
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$oidc_groups_claim = undef,
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$admission_plugins = undef
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) { }
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class platform::kubernetes::cgroup::params (
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$cgroup_root = '/sys/fs/cgroup',
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$cgroup_name = 'k8s-infra',
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$controllers = ['cpuset', 'cpu', 'cpuacct', 'memory', 'systemd', 'pids'],
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) {}
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class platform::kubernetes::cgroup
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inherits ::platform::kubernetes::cgroup::params {
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include ::platform::kubernetes::params
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$k8s_cpuset = $::platform::kubernetes::params::k8s_cpuset
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$k8s_nodeset = $::platform::kubernetes::params::k8s_nodeset
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# Default to float across all cpus and numa nodes
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if !defined('$k8s_cpuset') {
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$k8s_cpuset = generate('/bin/cat', '/sys/devices/system/cpu/online')
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notice("System default cpuset ${k8s_cpuset}.")
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}
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if !defined('$k8s_nodeset') {
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$k8s_nodeset = generate('/bin/cat', '/sys/devices/system/node/online')
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notice("System default nodeset ${k8s_nodeset}.")
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}
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# Create kubelet cgroup for the minimal set of required controllers.
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# NOTE: The kubernetes cgroup_manager_linux func Exists() checks that
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# specific subsystem cgroup paths actually exist on the system. The
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# particular cgroup cgroupRoot must exist for the following controllers:
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# "cpu", "cpuacct", "cpuset", "memory", "systemd", "pids".
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# Reference:
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# https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/cm/cgroup_manager_linux.go
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# systemd automatically mounts cgroups and controllers, so don't need
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# to do that here.
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notice("Create ${cgroup_root}/${controllers}/${cgroup_name}")
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$controllers.each |String $controller| {
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$cgroup_dir = "${cgroup_root}/${controller}/${cgroup_name}"
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file { $cgroup_dir :
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ensure => directory,
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owner => 'root',
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group => 'root',
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mode => '0700',
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}
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# Modify k8s cpuset resources to reflect platform configured cores.
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# NOTE: Using 'exec' here instead of 'file' resource type with 'content'
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# tag to update contents under /sys, since puppet tries to create files
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# with temp names in the same directory, and the kernel only allows
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# specific filenames to be created in these particular directories.
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# This causes puppet to fail if we use the 'content' tag.
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# NOTE: Child cgroups cpuset must be subset of parent. In the case where
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# child directories already exist and we change the parent's cpuset to
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# be a subset of what the children have, will cause the command to fail
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# with "-bash: echo: write error: device or resource busy".
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if $controller == 'cpuset' {
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$cgroup_mems = "${cgroup_dir}/cpuset.mems"
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$cgroup_cpus = "${cgroup_dir}/cpuset.cpus"
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$cgroup_tasks = "${cgroup_dir}/tasks"
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notice("Set ${cgroup_name} nodeset: ${k8s_nodeset}, cpuset: ${k8s_cpuset}")
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File[ $cgroup_dir ]
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-> exec { "Create ${cgroup_mems}" :
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command => "/bin/echo ${k8s_nodeset} > ${cgroup_mems} || :",
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}
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-> exec { "Create ${cgroup_cpus}" :
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command => "/bin/echo ${k8s_cpuset} > ${cgroup_cpus} || :",
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}
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-> file { $cgroup_tasks :
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ensure => file,
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owner => 'root',
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group => 'root',
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mode => '0644',
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}
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}
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}
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}
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class platform::kubernetes::kubeadm {
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include ::platform::docker::params
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include ::platform::kubernetes::params
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include ::platform::params
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$node_ip = $::platform::kubernetes::params::node_ip
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$host_labels = $::platform::kubernetes::params::host_labels
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$k8s_platform_cpuset = $::platform::kubernetes::params::k8s_platform_cpuset
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$k8s_reserved_mem = $::platform::kubernetes::params::k8s_reserved_mem
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$k8s_all_reserved_cpuset = $::platform::kubernetes::params::k8s_all_reserved_cpuset
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$k8s_cni_bin_dir = $::platform::kubernetes::params::k8s_cni_bin_dir
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$k8s_vol_plugin_dir = $::platform::kubernetes::params::k8s_vol_plugin_dir
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$k8s_cpu_mgr_policy = $::platform::kubernetes::params::k8s_cpu_mgr_policy
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$k8s_topology_mgr_policy = $::platform::kubernetes::params::k8s_topology_mgr_policy
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$iptables_file = "net.bridge.bridge-nf-call-ip6tables = 1
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net.bridge.bridge-nf-call-iptables = 1"
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# Configure kubelet cpumanager options
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if ($::personality == 'controller' and
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$::platform::params::distributed_cloud_role == 'systemcontroller') {
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$k8s_cpu_manager_opts = '--cpu-manager-policy=none'
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} else {
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if str2bool($::is_worker_subfunction)
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and !('openstack-compute-node' in $host_labels) {
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$opts = join(['--feature-gates TopologyManager=true',
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"--cpu-manager-policy=${k8s_cpu_mgr_policy}",
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"--topology-manager-policy=${k8s_topology_mgr_policy}"], ' ')
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$opts_sys_res = join(['--system-reserved=',
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"memory=${k8s_reserved_mem}Mi"])
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if $k8s_cpu_mgr_policy == 'none' {
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$k8s_reserved_cpus = $k8s_platform_cpuset
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} else {
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# The union of platform, isolated, and vswitch
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$k8s_reserved_cpus = $k8s_all_reserved_cpuset
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}
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$opts_res_cpus = "--reserved-cpus=${k8s_reserved_cpus}"
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$k8s_cpu_manager_opts = join([$opts,
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$opts_sys_res,
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$opts_res_cpus], ' ')
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} else {
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$k8s_cpu_manager_opts = '--cpu-manager-policy=none'
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}
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}
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# Enable kubelet extra parameters that are node specific such as
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# cpumanager
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file { '/etc/sysconfig/kubelet':
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ensure => file,
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content => template('platform/kubelet.conf.erb'),
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}
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# The cpu_manager_state file is regenerated when cpumanager starts or
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# changes allocations so it is safe to remove before kubelet starts.
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# This file persists so cpumanager's DefaultCPUSet becomes inconsistent
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# when we offline/online CPUs or change the number of reserved cpus.
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-> exec { 'remove cpu_manager_state':
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command => 'rm -f /var/lib/kubelet/cpu_manager_state || true',
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}
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# Update iptables config. This is required based on:
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# https://kubernetes.io/docs/tasks/tools/install-kubeadm
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# This probably belongs somewhere else - initscripts package?
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file { '/etc/sysctl.d/k8s.conf':
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ensure => file,
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content => $iptables_file,
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owner => 'root',
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group => 'root',
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mode => '0644',
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}
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-> exec { 'update kernel parameters for iptables':
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command => 'sysctl --system',
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}
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# Create manifests directory required by kubelet
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-> file { '/etc/kubernetes/manifests':
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ensure => directory,
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owner => 'root',
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group => 'root',
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mode => '0700',
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}
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# Start kubelet.
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-> service { 'kubelet':
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enable => true,
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}
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# A seperate enable is required since we have modified the service resource
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# to never enable services.
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-> exec { 'enable-kubelet':
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command => '/usr/bin/systemctl enable kubelet.service',
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}
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}
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class platform::kubernetes::master::init
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inherits ::platform::kubernetes::params {
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include ::platform::params
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include ::platform::docker::params
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include ::platform::dockerdistribution::params
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if str2bool($::is_initial_k8s_config) {
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# This allows subsequent node installs
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# Notes regarding ::is_initial_k8s_config check:
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# - Ensures block is only run for new node installs (e.g. controller-1)
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# or reinstalls. This part is needed only once;
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# - Ansible configuration is independently configuring Kubernetes. A retry
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# in configuration by puppet leads to failed manifest application.
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# This flag is created by Ansible on controller-0;
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# - Ansible replay is not impacted by flag creation.
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$local_registry_auth = "${::platform::dockerdistribution::params::registry_username}:${::platform::dockerdistribution::params::registry_password}" # lint:ignore:140chars
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exec { 'pre pull k8s images':
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command => "kubeadm config images list --kubernetes-version ${version} --image-repository registry.local:9001/k8s.gcr.io | xargs -i crictl pull --creds ${local_registry_auth} {}", # lint:ignore:140chars
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logoutput => true,
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}
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-> exec { 'configure master node':
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command => $join_cmd,
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logoutput => true,
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}
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# Update ownership/permissions for file created by "kubeadm init".
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# We want it readable by sysinv and sysadmin.
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-> file { '/etc/kubernetes/admin.conf':
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ensure => file,
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owner => 'root',
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group => $::platform::params::protected_group_name,
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mode => '0640',
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}
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# Add a bash profile script to set a k8s env variable
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-> file {'bash_profile_k8s':
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ensure => present,
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path => '/etc/profile.d/kubeconfig.sh',
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mode => '0644',
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source => "puppet:///modules/${module_name}/kubeconfig.sh"
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}
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# Remove the taint from the master node
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-> exec { 'remove taint from master node':
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command => "kubectl --kubeconfig=/etc/kubernetes/admin.conf taint node ${::platform::params::hostname} node-role.kubernetes.io/master- || true", # lint:ignore:140chars
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logoutput => true,
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}
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# Add kubelet service override
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-> file { '/etc/systemd/system/kubelet.service.d/kube-stx-override.conf':
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ensure => file,
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content => template('platform/kube-stx-override.conf.erb'),
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owner => 'root',
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group => 'root',
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mode => '0644',
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}
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# set kubelet monitored by pmond
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-> file { '/etc/pmon.d/kubelet.conf':
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ensure => file,
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content => template('platform/kubelet-pmond-conf.erb'),
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owner => 'root',
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group => 'root',
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mode => '0644',
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}
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# Reload systemd
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-> exec { 'perform systemctl daemon reload for kubelet override':
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command => 'systemctl daemon-reload',
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logoutput => true,
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}
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# Initial kubernetes config done on node
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-> file { '/etc/platform/.initial_k8s_config_complete':
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ensure => present,
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}
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}
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# Run kube-cert-rotation daily
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cron { 'kube-cert-rotation':
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ensure => 'present',
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command => '/usr/bin/kube-cert-rotation.sh',
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environment => 'PATH=/bin:/usr/bin:/usr/sbin',
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minute => '10',
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hour => '*/24',
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user => 'root',
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}
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}
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class platform::kubernetes::master
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inherits ::platform::kubernetes::params {
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contain ::platform::kubernetes::kubeadm
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contain ::platform::kubernetes::cgroup
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contain ::platform::kubernetes::master::init
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contain ::platform::kubernetes::coredns
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contain ::platform::kubernetes::firewall
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Class['::platform::sysctl::controller::reserve_ports'] -> Class[$name]
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Class['::platform::etcd'] -> Class[$name]
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Class['::platform::docker::config'] -> Class[$name]
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Class['::platform::containerd::config'] -> Class[$name]
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# Ensure DNS is configured as name resolution is required when
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# kubeadm init is run.
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Class['::platform::dns'] -> Class[$name]
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Class['::platform::kubernetes::kubeadm']
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-> Class['::platform::kubernetes::cgroup']
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-> Class['::platform::kubernetes::master::init']
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-> Class['::platform::kubernetes::coredns']
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-> Class['::platform::kubernetes::firewall']
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}
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class platform::kubernetes::worker::init
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inherits ::platform::kubernetes::params {
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Class['::platform::docker::config'] -> Class[$name]
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Class['::platform::containerd::config'] -> Class[$name]
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Class['::platform::filesystem::kubelet'] -> Class[$name]
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if str2bool($::is_initial_config) {
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include ::platform::dockerdistribution::params
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# Get the pause image tag from kubeadm required images
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# list and replace with local registry
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$get_k8s_pause_img = "kubeadm config images list 2>/dev/null |\
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awk '/^k8s.gcr.io\\/pause:/{print \$1}' | sed 's#k8s.gcr.io#registry.local:9001\\/k8s.gcr.io#'"
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$k8s_pause_img = generate('/bin/sh', '-c', $get_k8s_pause_img)
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if k8s_pause_img {
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exec { 'load k8s pause image by containerd':
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command => "crictl pull --creds ${::platform::dockerdistribution::params::registry_username}:${::platform::dockerdistribution::params::registry_password} ${k8s_pause_img}", # lint:ignore:140chars
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logoutput => true,
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before => Exec['configure worker node']
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}
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}
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}
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# Configure the worker node. Only do this once, so check whether the
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# kubelet.conf file has already been created (by the join).
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exec { 'configure worker node':
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command => $join_cmd,
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logoutput => true,
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unless => 'test -f /etc/kubernetes/kubelet.conf',
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}
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# Add kubelet service override
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-> file { '/etc/systemd/system/kubelet.service.d/kube-stx-override.conf':
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ensure => file,
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content => template('platform/kube-stx-override.conf.erb'),
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owner => 'root',
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group => 'root',
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mode => '0644',
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}
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# set kubelet monitored by pmond
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-> file { '/etc/pmon.d/kubelet.conf':
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ensure => file,
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content => template('platform/kubelet-pmond-conf.erb'),
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owner => 'root',
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group => 'root',
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mode => '0644',
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}
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# Reload systemd
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-> exec { 'perform systemctl daemon reload for kubelet override':
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command => 'systemctl daemon-reload',
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logoutput => true,
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}
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}
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class platform::kubernetes::worker::pci
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(
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$pcidp_network_resources = undef,
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) {
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include ::platform::kubernetes::params
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file { '/etc/pcidp':
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ensure => 'directory',
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owner => 'root',
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group => 'root',
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mode => '0700',
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}
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-> file { '/etc/pcidp/config.json':
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ensure => present,
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owner => 'root',
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group => 'root',
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mode => '0644',
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content => template('platform/pcidp.conf.erb'),
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}
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}
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class platform::kubernetes::worker
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inherits ::platform::kubernetes::params {
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# Worker configuration is not required on AIO hosts, since the master
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# will already be configured and includes support for running pods.
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if $::personality != 'controller' {
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contain ::platform::kubernetes::kubeadm
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contain ::platform::kubernetes::cgroup
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contain ::platform::kubernetes::worker::init
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Class['::platform::kubernetes::kubeadm']
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-> Class['::platform::kubernetes::cgroup']
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-> Class['::platform::kubernetes::worker::init']
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} else {
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# Reconfigure cgroups cpusets on AIO
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contain ::platform::kubernetes::cgroup
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# Add refresh dependency for kubelet for hugepage allocation
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Class['::platform::compute::allocate']
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~> service { 'kubelet':
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}
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}
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# TODO: The following exec is a workaround. Once kubernetes becomes the
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# default installation, /etc/pmon.d/libvirtd.conf needs to be removed from
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# the load.
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exec { 'Update PMON libvirtd.conf':
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command => "/bin/sed -i 's#mode = passive#mode = ignore #' /etc/pmon.d/libvirtd.conf",
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onlyif => '/usr/bin/test -e /etc/pmon.d/libvirtd.conf'
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}
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contain ::platform::kubernetes::worker::pci
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}
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class platform::kubernetes::coredns {
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include ::platform::params
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if str2bool($::is_initial_k8s_config) {
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if $::platform::params::system_mode != 'simplex' {
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# For duplex and multi-node system, restrict the dns pod to master nodes
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exec { 'restrict coredns to master nodes':
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command => 'kubectl --kubeconfig=/etc/kubernetes/admin.conf -n kube-system patch deployment coredns -p \'{"spec":{"template":{"spec":{"nodeSelector":{"node-role.kubernetes.io/master":""}}}}}\'', # lint:ignore:140chars
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logoutput => true,
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}
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-> exec { 'Use anti-affinity for coredns pods':
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command => 'kubectl --kubeconfig=/etc/kubernetes/admin.conf -n kube-system patch deployment coredns -p \'{"spec":{"template":{"spec":{"affinity":{"podAntiAffinity":{"requiredDuringSchedulingIgnoredDuringExecution":[{"labelSelector":{"matchExpressions":[{"key":"k8s-app","operator":"In","values":["kube-dns"]}]},"topologyKey":"kubernetes.io/hostname"}]}}}}}}\'', # lint:ignore:140chars
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logoutput => true,
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}
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} else {
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# For simplex system, 1 coredns is enough
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exec { '1 coredns for simplex mode':
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command => 'kubectl --kubeconfig=/etc/kubernetes/admin.conf -n kube-system scale --replicas=1 deployment coredns', # lint:ignore:140chars
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logoutput => true,
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}
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}
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}
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}
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# TODO: remove port 9001 once we have a public docker image registry using standard ports.
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# add 5000 as the default port for private registry
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class platform::kubernetes::firewall::params (
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$transport = 'tcp',
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$table = 'nat',
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$dports = [80, 443, 9001, 5000],
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$chain = 'POSTROUTING',
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$jump = 'SNAT',
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) {}
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class platform::kubernetes::firewall
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inherits ::platform::kubernetes::firewall::params {
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include ::platform::params
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include ::platform::network::oam::params
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include ::platform::network::mgmt::params
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include ::platform::docker::params
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# add http_proxy and https_proxy port to k8s firewall
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# in order to allow worker node access public network via proxy
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if $::platform::docker::params::http_proxy {
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$http_proxy_str_array = split($::platform::docker::params::http_proxy, ':')
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$http_proxy_port = $http_proxy_str_array[length($http_proxy_str_array) - 1]
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if $http_proxy_port =~ /^\d+$/ {
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$http_proxy_port_val = $http_proxy_port
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}
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}
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if $::platform::docker::params::https_proxy {
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$https_proxy_str_array = split($::platform::docker::params::https_proxy, ':')
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$https_proxy_port = $https_proxy_str_array[length($https_proxy_str_array) - 1]
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if $https_proxy_port =~ /^\d+$/ {
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$https_proxy_port_val = $https_proxy_port
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}
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}
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if defined('$http_proxy_port_val') {
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if defined('$https_proxy_port_val') and ($http_proxy_port_val != $https_proxy_port_val) {
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$dports = $dports << $http_proxy_port_val << $https_proxy_port_val
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} else {
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$dports = $dports << $http_proxy_port_val
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}
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} elsif defined('$https_proxy_port_val') {
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$dports = $dports << $https_proxy_port_val
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}
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$system_mode = $::platform::params::system_mode
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$oam_float_ip = $::platform::network::oam::params::controller_address
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$oam_interface = $::platform::network::oam::params::interface_name
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$mgmt_subnet = $::platform::network::mgmt::params::subnet_network
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$mgmt_prefixlen = $::platform::network::mgmt::params::subnet_prefixlen
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$s_mgmt_subnet = "${mgmt_subnet}/${mgmt_prefixlen}"
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$d_mgmt_subnet = "! ${s_mgmt_subnet}"
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if $system_mode != 'simplex' {
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platform::firewall::rule { 'kubernetes-nat':
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service_name => 'kubernetes',
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table => $table,
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chain => $chain,
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proto => $transport,
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jump => $jump,
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ports => $dports,
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host => $s_mgmt_subnet,
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destination => $d_mgmt_subnet,
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outiface => $oam_interface,
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tosource => $oam_float_ip,
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}
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}
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}
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class platform::kubernetes::pre_pull_control_plane_images
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inherits ::platform::kubernetes::params {
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include ::platform::dockerdistribution::params
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$local_registry_auth = "${::platform::dockerdistribution::params::registry_username}:${::platform::dockerdistribution::params::registry_password}" # lint:ignore:140chars
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exec { 'pre pull images':
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command => "kubeadm config images list --kubernetes-version ${upgrade_to_version} --image-repository=registry.local:9001/k8s.gcr.io | xargs -i crictl pull --creds ${local_registry_auth} {}", # lint:ignore:140chars
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logoutput => true,
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}
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}
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class platform::kubernetes::upgrade_first_control_plane
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inherits ::platform::kubernetes::params {
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|
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include ::platform::params
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# The --allow-*-upgrades options allow us to upgrade to any k8s release if necessary
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exec { 'upgrade first control plane':
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command => "kubeadm upgrade apply ${version} --allow-experimental-upgrades --allow-release-candidate-upgrades -y",
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logoutput => true,
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}
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if $::platform::params::system_mode != 'simplex' {
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# For duplex and multi-node system, restrict the coredns pod to master nodes
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exec { 'restrict coredns to master nodes':
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command => 'kubectl --kubeconfig=/etc/kubernetes/admin.conf -n kube-system patch deployment coredns -p \'{"spec":{"template":{"spec":{"nodeSelector":{"node-role.kubernetes.io/master":""}}}}}\'', # lint:ignore:140chars
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logoutput => true,
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require => Exec['upgrade first control plane']
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}
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-> exec { 'Use anti-affinity for coredns pods':
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command => 'kubectl --kubeconfig=/etc/kubernetes/admin.conf -n kube-system patch deployment coredns -p \'{"spec":{"template":{"spec":{"affinity":{"podAntiAffinity":{"requiredDuringSchedulingIgnoredDuringExecution":[{"labelSelector":{"matchExpressions":[{"key":"k8s-app","operator":"In","values":["kube-dns"]}]},"topologyKey":"kubernetes.io/hostname"}]}}}}}}\'', # lint:ignore:140chars
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logoutput => true,
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|
}
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} else {
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|
# For simplex system, 1 coredns is enough
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|
exec { '1 coredns for simplex mode':
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|
command => 'kubectl --kubeconfig=/etc/kubernetes/admin.conf -n kube-system scale --replicas=1 deployment coredns', # lint:ignore:140chars
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|
logoutput => true,
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require => Exec['upgrade first control plane']
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}
|
|
}
|
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}
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|
|
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class platform::kubernetes::upgrade_control_plane
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inherits ::platform::kubernetes::params {
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|
|
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exec { 'upgrade control plane':
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|
command => 'kubeadm upgrade node',
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|
logoutput => true,
|
|
}
|
|
}
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|
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class platform::kubernetes::master::upgrade_kubelet
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inherits ::platform::kubernetes::params {
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|
|
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exec { 'restart kubelet':
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|
command => '/usr/local/sbin/pmon-restart kubelet'
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|
}
|
|
}
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|
|
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class platform::kubernetes::worker::upgrade_kubelet
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inherits ::platform::kubernetes::params {
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|
|
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include ::platform::dockerdistribution::params
|
|
|
|
# Get the pause image tag from kubeadm required images
|
|
# list and replace with local registry
|
|
$get_k8s_pause_img = "kubeadm config images list 2>/dev/null |\
|
|
awk '/^k8s.gcr.io\\/pause:/{print \$1}' | sed 's#k8s.gcr.io#registry.local:9001\\/k8s.gcr.io#'"
|
|
$k8s_pause_img = generate('/bin/sh', '-c', $get_k8s_pause_img)
|
|
|
|
if k8s_pause_img {
|
|
exec { 'load k8s pause image':
|
|
command => "crictl pull --creds ${::platform::dockerdistribution::params::registry_username}:${::platform::dockerdistribution::params::registry_password} ${k8s_pause_img}", # lint:ignore:140chars
|
|
logoutput => true,
|
|
before => Exec['upgrade kubelet']
|
|
}
|
|
}
|
|
|
|
exec { 'upgrade kubelet':
|
|
command => 'kubeadm upgrade node',
|
|
logoutput => true,
|
|
}
|
|
|
|
-> exec { 'restart kubelet':
|
|
command => '/usr/local/sbin/pmon-restart kubelet'
|
|
}
|
|
}
|
|
|
|
class platform::kubernetes::master::change_apiserver_parameters
|
|
inherits ::platform::kubernetes::params {
|
|
|
|
$configmap_temp_file = '/tmp/cluster_configmap.yaml'
|
|
$configview_temp_file = '/tmp/kubeadm_config_view.yaml'
|
|
|
|
exec { 'update kube-apiserver params':
|
|
command => template('platform/kube-apiserver-change-params.erb')
|
|
}
|
|
|
|
}
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