nodegroups.py

   1 #!/usr/bin/python
   2
   3 # This script is used to manipulate the operational state of nodes in
   4 # different node groups.  These are basically set operations on nodes via the
   5 # PLC api.
   6 #
   7 # Take the ng name as an argument....
   8 # optionally,
   9 #  * restart them all.
  10 #  * Set some or all in the set to rins.
  11 #  * get a list of nodes in the Alpha nodegroup.
  12 #
  13 # Given a nodelist, it could tag each one with a nodegroup name.
  14 #  *
  15
  16 import plc
  17 import auth
  18 api = plc.PLC(auth.auth, auth.plc)
  19
  20 from config import config
  21 from optparse import OptionParser
  22
  23 import soltesz
  24 fb = soltesz.dbLoad("findbad")
  25
  26 def get_current_state(fbnode):
  27         state = fbnode['state']
  28         l = state.lower()
  29         if l == "debug": return 'dbg'
  30         return l
  31
  32 parser = OptionParser()
  33 parser.set_defaults(nodegroup="Alpha",
  34                                         node=None,
  35                                         nodelist=None,
  36                                         list=False,
  37                                         add=False,
  38                                         delete=False,
  39                                         )
  40 parser.add_option("", "--nodegroup", dest="nodegroup", metavar="NodegroupName",
  41                                         help="Specify a nodegroup to perform actions on")
  42 parser.add_option("", "--list", dest="list", action="store_true",
  43                                         help="List all nodes in the given nodegroup")
  44 parser.add_option("", "--add", dest="add", action="store_true",
  45                                         help="Add nodes to the given nodegroup")
  46 parser.add_option("", "--delete", dest="delete", action="store_true",
  47                                         help="Delete nodes from the given nodegroup")
  48 parser.add_option("", "--node", dest="node", metavar="nodename.edu",
  49                                         help="A single node name to add to the nodegroup")
  50 parser.add_option("", "--nodelist", dest="nodelist", metavar="list.txt",
  51                                         help="Use all nodes in the given file for operation.")
  52 config = config(parser)
  53 config.parse_args()
  54
  55 # COLLECT nodegroups, nodes and node lists
  56 ng = api.GetNodeGroups({'name' : config.nodegroup})
  57 nodelist = api.GetNodes(ng[0]['node_ids'])
  58 hostnames = [ n['hostname'] for n in nodelist ]
  59
  60 if config.node or config.nodelist:
  61         if config.node: hostnames = [ config.node ]
  62         else: hostnames = config.getListFromFile(config.nodelist)
  63
  64 # commands:
  65 if config.list:
  66         print " ---- Nodes in the %s Node Group ----" % config.nodegroup
  67         i = 0
  68         for node in nodelist:
  69                 print "%-2d" % i,
  70                 if node['hostname'] in fb['nodes']:
  71                         node['current'] = get_current_state(fb['nodes'][node['hostname']]['values'])
  72                 else:
  73                         node['current'] = 'none'
  74                 print "%(hostname)-38s %(boot_state)5s %(current)5s %(key)s" % node
  75                 i += 1
  76
  77 elif config.add:
  78         for node in hostnames:
  79                 print "Adding %s to %s nodegroup" % (config.node, config.nodegroup)
  80                 api.AddNodeToNodeGroup(config.node, config.nodegroup)
  81
  82 elif config.delete:
  83         for node in hostnames:
  84                 print "Deleting %s from %s nodegroup" % (config.node, config.nodegroup)
  85                 api.DeleteNodeFromNodeGroup(config.node, config.nodegroup)
  86
  87 else:
  88         print "no other options supported."