Class: Elasticsearch::Drain::CLI
- Inherits:
-
Thor
- Object
- Thor
- Elasticsearch::Drain::CLI
- Defined in:
- lib/elasticsearch/drain/cli.rb
Overview
rubocop:disable Metrics/ClassLength
Instance Attribute Summary collapse
-
#active_nodes ⇒ Object
Returns the value of attribute active_nodes.
-
#drainer ⇒ Object
readonly
Returns the value of attribute drainer.
Instance Method Summary collapse
-
#asg ⇒ Object
rubocop:enable Metrics/LineLength.
Instance Attribute Details
#active_nodes ⇒ Object
Returns the value of attribute active_nodes.
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# File 'lib/elasticsearch/drain/cli.rb', line 9 def active_nodes @active_nodes end |
#drainer ⇒ Object (readonly)
Returns the value of attribute drainer.
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# File 'lib/elasticsearch/drain/cli.rb', line 8 def drainer @drainer end |
Instance Method Details
#asg ⇒ Object
rubocop:enable Metrics/LineLength
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# File 'lib/elasticsearch/drain/cli.rb', line 20 def asg # rubocop:disable Metrics/MethodLength @drainer = Elasticsearch::Drain.new([:host], [:asg], [:region]) ensure_cluster_healthy @active_nodes = drainer.active_nodes_in_asg # If :nodes are specified, :number has no effect if [:nodes] say "Nodes #{[:nodes].join(', ')} have been specified, the --number option has no effect" number_to_drain = nil currently_draining_nodes = nil else number_to_drain = [:number] currently_draining_nodes = drainer.cluster.currently_draining('_id') end # If a node or nodes are specified, only drain the requested node(s) @active_nodes = active_nodes.find_all do |n| instance_id = drainer.asg.instance(n.ipaddress).instance_id [:nodes].include?(instance_id) end if [:nodes] do_exit { say_status 'Complete', 'Nothing to do', :green } if active_nodes.empty? say_status 'Found Nodes', "AutoScalingGroup: #{instances(active_nodes)}", :magenta until active_nodes.empty? ensure_cluster_healthy nodes = active_nodes # If there are nodes in cluster settings "transient.cluster.routing.allocation.exclude" # test if those nodes are still in the ASG. If so, work on them first unless nodes are # specified. if currently_draining_nodes nodes_to_drain = active_nodes.find_all { |n| currently_draining_nodes.split(',').include?(n.id) } # If the list of nodes_to_drain isn't empty, we want to set nodes to the list of nodes # we've already been working on. unless nodes_to_drain.empty? nodes = nodes_to_drain say_status 'Active Nodes', "Resuming drain process on #{instances(nodes)}", :magenta end # We should only process currently_draining_nodes once currently_draining_nodes = nil end # If we specify a number but DON'T specify nodes, sample the active_nodes. if number_to_drain nodes = nodes.sample(number_to_drain.to_i) say_status 'Active Nodes', "Sampled #{number_to_drain} nodes and got #{instances(nodes)}", :magenta end @active_nodes = nodes unless [:continue] drain_nodes(nodes) deleted_nodes = remove_nodes(nodes) # Remove the drained nodes from the list of active_nodes deleted_nodes.each do |deleted_node| active_nodes.delete_if { |n| n.id == deleted_node.id } end unless active_nodes.empty? say_status 'Drain Nodes', "#{active_nodes.length} nodes remaining", :green sleep_time = wait_sleep_time say_status 'Waiting', "Sleeping for #{sleep_time} seconds before the next iteration", :green sleep sleep_time end end say_status 'Complete', 'Draining nodes complete!', :green end |