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|
# frozen_string_literal: true
module Clusters
module Platforms
class Kubernetes < ApplicationRecord
include Gitlab::Kubernetes
include EnumWithNil
include AfterCommitQueue
RESERVED_NAMESPACES = %w(gitlab-managed-apps).freeze
self.table_name = 'cluster_platforms_kubernetes'
belongs_to :cluster, inverse_of: :platform_kubernetes, class_name: 'Clusters::Cluster'
attr_encrypted :password,
mode: :per_attribute_iv,
key: Settings.attr_encrypted_db_key_base_truncated,
algorithm: 'aes-256-cbc'
attr_encrypted :token,
mode: :per_attribute_iv,
key: Settings.attr_encrypted_db_key_base_truncated,
algorithm: 'aes-256-cbc'
before_validation :enforce_namespace_to_lower_case
before_validation :enforce_ca_whitespace_trimming
validates :namespace,
allow_blank: true,
length: 1..63,
format: {
with: Gitlab::Regex.kubernetes_namespace_regex,
message: Gitlab::Regex.kubernetes_namespace_regex_message
}
validates :namespace, exclusion: { in: RESERVED_NAMESPACES }
validate :no_namespace, unless: :allow_user_defined_namespace?
# We expect to be `active?` only when enabled and cluster is created (the api_url is assigned)
validates :api_url, public_url: true, presence: true
validates :token, presence: true
validates :ca_cert, certificate: true, allow_blank: true, if: :ca_cert_changed?
validate :prevent_modification, on: :update
alias_attribute :ca_pem, :ca_cert
delegate :enabled?, to: :cluster, allow_nil: true
delegate :provided_by_user?, to: :cluster, allow_nil: true
delegate :allow_user_defined_namespace?, to: :cluster, allow_nil: true
alias_method :active?, :enabled?
enum_with_nil authorization_type: {
unknown_authorization: nil,
rbac: 1,
abac: 2
}
default_value_for :authorization_type, :rbac
def predefined_variables(project:, environment_name:)
Gitlab::Ci::Variables::Collection.new.tap do |variables|
variables.append(key: 'KUBE_URL', value: api_url)
if ca_pem.present?
variables
.append(key: 'KUBE_CA_PEM', value: ca_pem)
.append(key: 'KUBE_CA_PEM_FILE', value: ca_pem, file: true)
end
if !cluster.managed?
namespace = Gitlab::Kubernetes::DefaultNamespace.new(cluster, project: project).from_environment_name(environment_name)
variables
.append(key: 'KUBE_TOKEN', value: token, public: false, masked: true)
.append(key: 'KUBE_NAMESPACE', value: namespace)
.append(key: 'KUBECONFIG', value: kubeconfig(namespace), public: false, file: true)
elsif kubernetes_namespace = find_persisted_namespace(project, environment_name: environment_name)
variables.concat(kubernetes_namespace.predefined_variables)
end
variables.concat(cluster.predefined_variables)
end
end
def calculate_reactive_cache_for(environment)
return unless enabled?
{ pods: read_pods(environment.deployment_namespace) }
end
def terminals(environment, data)
pods = filter_by_project_environment(data[:pods], environment.project.full_path_slug, environment.slug)
terminals = pods.flat_map { |pod| terminals_for_pod(api_url, environment.deployment_namespace, pod) }.compact
terminals.each { |terminal| add_terminal_auth(terminal, terminal_auth) }
end
def kubeclient
@kubeclient ||= build_kube_client!
end
private
##
# Environment slug can be predicted given an environment
# name, so even if the environment isn't persisted yet we
# still know what to look for.
def environment_slug(name)
Gitlab::Slug::Environment.new(name).generate
end
def find_persisted_namespace(project, environment_name:)
Clusters::KubernetesNamespaceFinder.new(
cluster,
project: project,
environment_slug: environment_slug(environment_name)
).execute
end
def kubeconfig(namespace)
to_kubeconfig(
url: api_url,
namespace: namespace,
token: token,
ca_pem: ca_pem)
end
def read_pods(namespace)
kubeclient.get_pods(namespace: namespace).as_json
rescue Kubeclient::ResourceNotFoundError
[]
end
def build_kube_client!
raise "Incomplete settings" unless api_url
unless (username && password) || token
raise "Either username/password or token is required to access API"
end
Gitlab::Kubernetes::KubeClient.new(
api_url,
auth_options: kubeclient_auth_options,
ssl_options: kubeclient_ssl_options,
http_proxy_uri: ENV['http_proxy']
)
end
def kubeclient_ssl_options
opts = { verify_ssl: OpenSSL::SSL::VERIFY_PEER }
if ca_pem.present?
opts[:cert_store] = OpenSSL::X509::Store.new
opts[:cert_store].add_cert(OpenSSL::X509::Certificate.new(ca_pem))
end
opts
end
def kubeclient_auth_options
{ bearer_token: token }
end
def terminal_auth
{
token: token,
ca_pem: ca_pem,
max_session_time: Gitlab::CurrentSettings.terminal_max_session_time
}
end
def enforce_namespace_to_lower_case
self.namespace = self.namespace&.downcase
end
def enforce_ca_whitespace_trimming
self.ca_pem = self.ca_pem&.strip
self.token = self.token&.strip
end
def no_namespace
if namespace
errors.add(:namespace, 'only allowed for project cluster')
end
end
def prevent_modification
return if provided_by_user?
if api_url_changed? || token_changed? || ca_pem_changed?
errors.add(:base, _('Cannot modify managed Kubernetes cluster'))
return false
end
true
end
end
end
end
|
