Class: Minfra::Cli::Kube

Inherits:
Object
  • Object
show all
Includes:
Common, Logging
Defined in:
lib/minfra/cli/commands/kube.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Logging

#debug, #deprecated, #error, #exit_error, #info, #warn

Methods included from Common

#run_cmd

Constructor Details

#initialize(options, config) ⇒ Kube

Returns a new instance of Kube.



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# File 'lib/minfra/cli/commands/kube.rb', line 12

def initialize(options, config)
  @options = options
  @config = config
  @env_config = config.orch_env_config
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/minfra/cli/commands/kube.rb', line 10

def config
  @config
end

#env_config ⇒ Object (readonly)

Returns the value of attribute env_config.



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# File 'lib/minfra/cli/commands/kube.rb', line 10

def env_config
  @env_config
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/minfra/cli/commands/kube.rb', line 10

def options
  @options
end

Instance Method Details

#create ⇒ Object 



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# File 'lib/minfra/cli/commands/kube.rb', line 31

def create
  $stdout.sync

  network_mask = @config.project.kind.network.mask
  gateway_ip = @config.project.kind.network.gateway
  panel_ip = @config.project.kind.panel.ip

  info "step: creating network #{kind_name} #{network_mask} gw #{gateway_ip}"
  # run(%{docker network inspect kind | grep "Subnet"}, exit_on_error: false).success?
  run(%(docker network rm #{kind_name}), exit_on_error: false)

  run(%(docker network create --gateway #{gateway_ip} --subnet=#{network_mask} #{kind_name}), exit_on_error: true)

  info "step: creating '#{kind_name}' kind cluster (can take some minutes)"
  kind_kube_path = Runner.run('echo $KUBECONFIG').to_s.strip
  kind_config = Templater.read(config.base_path.join('config', 'kind.yaml.erb'), params: { config: })
  File.write(config.kind_config_path, kind_config)

  run(%(KIND_EXPERIMENTAL_DOCKER_NETWORK=#{kind_name} kind create cluster --name "#{kind_name}" --config #{@config.kind_config_path}))

  info 'step: configuring kind'
  
  set_kind_dns
  
  configs = [YAML.safe_load(File.read(kind_kube_path))]

  existing_config = YAML.safe_load(File.read(kube_config_path))

  existing_config['clusters'] = existing_config['clusters'].reject do |c|
    configs.map do |k|
      k['clusters']
    end.flatten.map { |n| n['name'] }.include?(c['name'])
  end.concat(configs.map do |k|
               k['clusters']
             end.flatten)
  existing_config['users'] = existing_config['users'].reject do |c|
                               configs.map do |k|
                                 k['users']
                               end.flatten.map { |n| n['name'] }.include?(c['name'])
                             end.concat(configs.map do |k|
                                          k['users']
                                        end.flatten).uniq { |k| k['name'] }
  existing_config['contexts'] = existing_config['contexts'].reject do |c|
    configs.map do |k|
      k['contexts']
    end.flatten.map { |n| n['name'] }.include?(c['name'])
  end.concat(configs.map do |k|
               k['contexts']
             end.flatten)
  File.write(@config.kube_config_path, YAML.dump(existing_config))

  info 'step: starting kind'
  run_kubectl %( config use-context kind-#{kind_name} )

  run_kubectl %(create clusterrolebinding default-admin --serviceaccount=kube-system:default --clusterrole=cluster-admin)

  #        info "step: attaching newly created kind cluster to its own docker network"
  #        info run(%{docker network connect #{kind_name} #{kind_name}-control-plane --ip #{panel_ip}})
end

#dashboard(stack_name, env, deployment, cluster) ⇒ Object 



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# File 'lib/minfra/cli/commands/kube.rb', line 18

def dashboard(stack_name, env, deployment, cluster)
  stack = init(stack_name, env, deployment, cluster)
  insecure_flag = l('infra::allow_insecure_k8s_connections') ? '--insecure-skip-tls-verify' : ''
  cmd = "k9s #{insecure_flag} --kubeconfig #{kube_config_path} --context #{stack.cluster_name} --namespace #{stack_name} --command pod"
  debug(cmd)
  exec(cmd)
end

#deploy(stack_name, _reason_message) ⇒ Object 



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# File 'lib/minfra/cli/commands/kube.rb', line 101

def deploy(stack_name, _reason_message)
  # TBD: options is global, avoid it!

  test = options[:test]
  stack = init(stack_name,
               options[:environment],
               options[:deployment],
               options[:cluster])
  cluster = stack.cluster_name

  method = options['install'] ? 'install' : 'upgrade'

  stack.release_path.mkpath

  File.open(stack.compose_path, 'w') do |f|
    Orchparty::App.new(cluster_name: cluster,
                       application_name: stack.name,
                       force_variable_definition: false,
                       file_name: stack.stack_rb_path.to_s,
                       status_dir: stack.release_path,
                       options:)
                  .print(method:, out_io: f)
  end
  # run_cmd(generate_cmd, :bash)
  bash_cmd = ["cd #{stack.release_path}"]
  run_cmd(bash_cmd, :bash)

  run_cmd(["cd #{stack.release_path}",
           "git --no-pager diff #{stack.release_path}"], :bash, silence: true)
  # run_cmd("helm diff upgrade --allow-unreleased ccs-integration-service state/stacks/development-staging-1/ccs-integration-service/helm -n ccs-integration-service", :bash, silence: true)

  errors = stack.check_plan
  unless errors.empty?
    if config['force_mem']
      exit_error(errors.join("\n"))
    else
      warn(errors.join("\n"))
    end
  end

  return if test

  exit_error('Deployment aborted!') if !(@config.dev? || options[:force] == true) && !Ask.boolean('Are the changes ok?')

  orch = Orchparty::App.new(cluster_name: cluster,
                            application_name: stack.name,
                            force_variable_definition: false,
                            file_name: stack.stack_rb_path.to_s,
                            status_dir: stack.release_path,
                            options:)
  orch.send(method)
end

#destroy(stack_name) ⇒ Object 



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# File 'lib/minfra/cli/commands/kube.rb', line 174

def destroy(stack_name)
  stack = init(stack_name,
               options[:environment],
               options[:deployment],
               options[:cluster])
  # Our convention is that our stack name is the namespace in helm.
  # Sometimes the helm release name can be the same as the stack name (usually in the normal stacks).
  # However, stacks that combine multiple helm charts have the release name different from the stack name, that's why we have to list them all in a sub-command.
  run_helm(%{uninstall --namespace #{stack_name} --kube-context #{stack.cluster_name} $(helm list --namespace #{stack_name} --kube-context #{stack.cluster_name} --short)})
end

#destroy_dev_cluster ⇒ Object 



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# File 'lib/minfra/cli/commands/kube.rb', line 95

def destroy_dev_cluster
  run %(kind delete cluster --name #{kind_name})
  run(%(docker rm -f #{kind_name}-control-plane), exit_on_error: false)
  run(%(docker network rm #{kind_name}), exit_on_error: false)
end

#kubectl_command(args) ⇒ Object 



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# File 'lib/minfra/cli/commands/kube.rb', line 185

def kubectl_command(args)
  exit_error('You must specify a stack name (--stack).') unless options['stack']

  subcommand = args.shift

  if %w[exec logs port-forward].include?(subcommand)
    resource = nil
    implicit_resource = 'pod'
  else
    resource = args.shift
  end

  stack = init(options[:stack],
               options[:environment],
               options[:deployment],
               options[:cluster])

  cluster = stack.cluster_name
  if [resource,
      implicit_resource].include?('pod') && %w[delete describe exec logs port-forward].include?(subcommand)
    cmd_get_pods = "--kubeconfig #{kube_config_path} --context #{cluster} --namespace #{options[:stack]} get pod -o jsonpath='{range .items[*]}{.metadata.name}{\"\\n\"}'"

    pods_list = run_kubectl(cmd_get_pods).stdout_lines

    fuzzy_pod_name = args.shift

    matching_pods = pods_list.select { |p| p.include?(fuzzy_pod_name) }

    exit_error("Could not find any pods that have '#{fuzzy_pod_name}' in their name.") if matching_pods.empty?

    position = 0
    if options[:position]
      p = options[:position].to_i
      if p <= matching_pods.size
        position = p - 1
      else
        exit_error("You specified '--position #{options[:position]} but only #{matching_pods.size} pods matched the name.")
      end
    end

    pod_name = matching_pods[position]
  end

  extra_args = args.dup

  if subcommand == 'exec'
    subcommand = 'exec -ti'
    extra_args.unshift('--')
    extra_args << 'bash' if args.empty?
  end

  extra_args = extra_args.join(' ')

  cmd = "--kubeconfig #{kube_config_path} --context #{cluster} --namespace #{options[:stack]} #{subcommand} #{resource} #{pod_name} #{extra_args}"
  KubeCtlRunner.run(cmd, runner: :exec)
end

#list ⇒ Object 



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# File 'lib/minfra/cli/commands/kube.rb', line 170

def list
  puts run_helm(%(list --all-namespaces))
end

#push(image) ⇒ Object 



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# File 'lib/minfra/cli/commands/kube.rb', line 91

def push(image)
  run %(kind load docker-image --name #{kind_name} #{image})
end

#restart ⇒ Object 



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# File 'lib/minfra/cli/commands/kube.rb', line 26

def restart
  run %(docker start #{kind_name}-control-plane)
  set_kind_dns
end

#rollback(stack_name, env, deployment, cluster) ⇒ Object 



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# File 'lib/minfra/cli/commands/kube.rb', line 154

def rollback(stack_name, env, deployment, cluster)
  stack = init(stack_name,
               env,
               deployment,
               cluster)

  cluster = stack.cluster_name

  extra_args = args.dup
  extra_args.delete('rollback')

  extra_args = extra_args.join(' ')

  run_helm("--kube-context #{cluster} rollback #{options[:stack]} #{extra_args}")
end