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 api = plc.getAuthAPI()
  18
  19 import parser as parsermodule
  20 from sets import Set
  21 from nodequery import verify,query_to_dict,node_select
  22
  23 from nodecommon import *
  24 import database
  25 import util.file
  26
  27 def main():
  28         fb = database.dbLoad("findbad")
  29
  30         parser = parsermodule.getParser(['nodesets'])
  31         parser.set_defaults( list=True,
  32                                                 add=False,
  33                         nocolor=False,
  34                                                 notng=False,
  35                                                 delete=False,)
  36
  37         parser.add_option("", "--not", dest="notng", action="store_true",
  38                                                 help="All nodes NOT in nodegroup.")
  39         parser.add_option("", "--nocolor", dest="nocolor", action="store_true",
  40                                                 help="Enable color")
  41         parser.add_option("", "--list", dest="list", action="store_true",
  42                                                 help="List all nodes in the given nodegroup")
  43         parser.add_option("", "--add", dest="add", action="store_true",
  44                                                 help="Add nodes to the given nodegroup")
  45         parser.add_option("", "--delete", dest="delete", action="store_true",
  46                                                 help="Delete nodes from the given nodegroup")
  47
  48         parser = parsermodule.getParser(['defaults'], parser)
  49         config = parsermodule.parse_args(parser)
  50
  51         # COLLECT nodegroups, nodes and node lists
  52         if config.node or config.nodelist:
  53                 if config.node:
  54                         hostlist = [ config.node ]
  55                 else:
  56                         hostlist = util.file.getListFromFile(config.nodelist)
  57
  58                 # NOTE: preserve order given in file.  Otherwise, return values are not in order
  59                 # given to GetNodes
  60                 nodelist = []
  61                 for h in hostlist:
  62                         nodelist += api.GetNodes(h)
  63
  64                 #nodelist = api.GetNodes(hostlist)
  65                 group_str = "Given"
  66
  67         elif config.site:
  68                 site = api.GetSites(config.site)
  69                 if len (site) > 0:
  70                         site = site[0]
  71                         nodelist = api.GetNodes(site['node_ids'])
  72                 else:
  73                         nodelist = []
  74
  75                 group_str = config.site
  76
  77         elif config.nodeselect:
  78                 hostlist = node_select(config.nodeselect)
  79                 nodelist = api.GetNodes(hostlist)
  80
  81                 group_str = "selection"
  82
  83         else:
  84                 ng = api.GetNodeGroups({'grouname' : config.nodegroup})
  85                 nodelist = api.GetNodes(ng[0]['node_ids'])
  86
  87                 group_str = config.nodegroup
  88
  89         if config.notng:
  90                 # Get nodegroup nodes
  91                 ng_nodes = nodelist
  92
  93                 # Get all nodes
  94                 all_nodes = api.GetNodes({'peer_id': None})
  95
  96                 # remove ngnodes from all node list
  97                 ng_list = [ x['hostname'] for x in ng_nodes ]
  98                 all_list = [ x['hostname'] for x in all_nodes ]
  99                 not_ng_nodes = Set(all_list) - Set(ng_list)
 100
 101                 # keep each node that *is* in the not_ng_nodes set
 102                 nodelist = filter(lambda x : x['hostname'] in not_ng_nodes, all_nodes)
 103
 104         hostnames = [ n['hostname'] for n in nodelist ]
 105
 106         # commands:
 107
 108         if config.add and config.nodegroup:
 109                 for node in hostnames:
 110                         print "Adding %s to %s nodegroup" % (node, config.nodegroup)
 111                         api.AddNodeToNodeGroup(node, config.nodegroup)
 112
 113         elif config.delete:
 114                 for node in hostnames:
 115                         print "Deleting %s from %s nodegroup" % (node, config.nodegroup)
 116                         api.DeleteNodeFromNodeGroup(node, config.nodegroup)
 117
 118         elif config.list:
 119                 print " ---- Nodes in the %s Node Group ----" % group_str
 120                 print "   Hostname                                   plc  obs     pcu     key         kernel                        last_contact, last change, comon uptime"
 121                 i = 1
 122                 for node in nodelist:
 123                         print "%-2d" % i,
 124                         print nodegroup_display(node, fb, config)
 125                         i += 1
 126
 127         else:
 128                 print "no other options supported."
 129
 130 if __name__ == "__main__":
 131         try:
 132                 main()
 133         except IOError:
 134                 pass