Module: Kontena::Cli::Helpers::HealthHelper

Included in:
Etcd::HealthCommand, Grids::HealthCommand, Nodes::HealthCommand, Nodes::ListCommand
Defined in:
lib/kontena/cli/helpers/health_helper.rb

Instance Method Summary collapse

Instance Method Details

#grid_health(grid, nodes) ⇒ Symbol

Validate grid nodes configuration and status

Parameters:

Returns:

  • (Symbol) —

    health



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# File 'lib/kontena/cli/helpers/health_helper.rb', line 25

def grid_health(grid, nodes)
  initial = grid['initial_size']
  minimum = grid['initial_size'] / 2 + 1 # a majority is required for etcd quorum

  online = nodes.select{|node| node['initial_member'] && node['connected']}

  if online.length < minimum
    return :error
  elsif online.length < initial
    return :warning
  else
    return :ok
  end
end

#health_icon(health) ⇒ Object 



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# File 'lib/kontena/cli/helpers/health_helper.rb', line 3

def health_icon(health)
  case health
  when nil
    " "
  when :ok
    pastel.green('⊛')
  when :warning
    pastel.yellow('⊙')
  when :error
    pastel.red('⊗')
  when :offline
    pastel.dark('⊝')
  else
    fail "Invalid health=#{health}"
  end
end

#node_etcd_health(node_etcd_health) ⇒ Symbol, String

Parameters:

Returns:



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# File 'lib/kontena/cli/helpers/health_helper.rb', line 55

def node_etcd_health(node_etcd_health)
  if node_etcd_health['health']
    return :ok, "healthy"
  elsif node_etcd_health['error']
    return :error, "unhealthy: #{node_etcd_health['error']}"
  else
    return :error, "unhealthy"
  end
end

#node_health(node, grid_health) ⇒ Symbol

Validate grid node status based on the grid health

Parameters:

  • node (Hash) —

    GET /nodes/:grid/:node

  • grid_health (Symbol) —

    @see #grid_health

Returns:

  • (Symbol) —

    health



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# File 'lib/kontena/cli/helpers/health_helper.rb', line 45

def node_health(node, grid_health)
  if node['initial_member']
    return node['connected'] ? grid_health : :offline
  else
    return node['connected'] ? :ok : :offline
  end
end