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