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 from optparse import OptionParser
  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         from config import config
  28         fb = database.dbLoad("findbad")
  29
  30         parser = OptionParser()
  31         parser.set_defaults(nodegroup="Alpha",
  32                                                 node=None,
  33                                                 nodelist=None,
  34                                                 list=True,
  35                                                 add=False,
  36                         nocolor=False,
  37                                                 notng=False,
  38                                                 delete=False,
  39                                                 nodeselect=None,
  40                                                 )
  41         parser.add_option("", "--not", dest="notng", action="store_true",
  42                                                 help="All nodes NOT in nodegroup.")
  43         parser.add_option("", "--nodegroup", dest="nodegroup", metavar="NodegroupName",
  44                                                 help="Specify a nodegroup to perform actions on")
  45         parser.add_option("", "--nodeselect", dest="nodeselect", metavar="querystring",
  46                                                 help="Specify a query to perform on findbad db")
  47         parser.add_option("", "--site", dest="site", metavar="site name",
  48                                                 help="Specify a site to view node status")
  49
  50         parser.add_option("", "--nocolor", dest="nocolor", action="store_true",
  51                                                 help="Enable color")
  52         parser.add_option("", "--list", dest="list", action="store_true",
  53                                                 help="List all nodes in the given nodegroup")
  54         parser.add_option("", "--add", dest="add", action="store_true",
  55                                                 help="Add nodes to the given nodegroup")
  56         parser.add_option("", "--delete", dest="delete", action="store_true",
  57                                                 help="Delete nodes from the given nodegroup")
  58         parser.add_option("", "--node", dest="node", metavar="nodename.edu",
  59                                                 help="A single node name to add to the nodegroup")
  60         parser.add_option("", "--nodelist", dest="nodelist", metavar="list.txt",
  61                                                 help="Use all nodes in the given file for operation.")
  62         config = config(parser)
  63         config.parse_args()
  64
  65         # COLLECT nodegroups, nodes and node lists
  66         if config.node or config.nodelist:
  67                 if config.node:
  68                         hostlist = [ config.node ]
  69                 else:
  70                         hostlist = config.getListFromFile(config.nodelist)
  71
  72                 # NOTE: preserve order given in file.  Otherwise, return values are not in order
  73                 # given to GetNodes
  74                 nodelist = []
  75                 for h in hostlist:
  76                         nodelist += api.GetNodes(h)
  77
  78                 #nodelist = api.GetNodes(hostlist)
  79                 group_str = "Given"
  80
  81         elif config.site:
  82                 site = api.GetSites(config.site)
  83                 if len (site) > 0:
  84                         site = site[0]
  85                         nodelist = api.GetNodes(site['node_ids'])
  86                 else:
  87                         nodelist = []
  88
  89                 group_str = config.site
  90
  91         elif config.nodeselect:
  92                 hostlist = node_select(config.nodeselect)
  93                 nodelist = api.GetNodes(hostlist)
  94
  95                 group_str = "selection"
  96
  97         else:
  98                 ng = api.GetNodeGroups({'name' : config.nodegroup})
  99                 nodelist = api.GetNodes(ng[0]['node_ids'])
 100
 101                 group_str = config.nodegroup
 102
 103         if config.notng:
 104                 # Get nodegroup nodes
 105                 ng_nodes = nodelist
 106
 107                 # Get all nodes
 108                 all_nodes = api.GetNodes({'peer_id': None})
 109
 110                 # remove ngnodes from all node list
 111                 ng_list = [ x['hostname'] for x in ng_nodes ]
 112                 all_list = [ x['hostname'] for x in all_nodes ]
 113                 not_ng_nodes = Set(all_list) - Set(ng_list)
 114
 115                 # keep each node that *is* in the not_ng_nodes set
 116                 nodelist = filter(lambda x : x['hostname'] in not_ng_nodes, all_nodes)
 117
 118         hostnames = [ n['hostname'] for n in nodelist ]
 119
 120         # commands:
 121
 122         if config.add and config.nodegroup:
 123                 for node in hostnames:
 124                         print "Adding %s to %s nodegroup" % (node, config.nodegroup)
 125                         api.AddNodeToNodeGroup(node, config.nodegroup)
 126
 127         elif config.delete:
 128                 for node in hostnames:
 129                         print "Deleting %s from %s nodegroup" % (node, config.nodegroup)
 130                         api.DeleteNodeFromNodeGroup(node, config.nodegroup)
 131
 132         elif config.list:
 133                 print " ---- Nodes in the %s Node Group ----" % group_str
 134                 i = 1
 135                 for node in nodelist:
 136                         print "%-2d" % i,
 137                         print nodegroup_display(node, fb, config)
 138                         i += 1
 139
 140         else:
 141                 print "no other options supported."
 142
 143 if __name__ == "__main__":
 144         try:
 145                 main()
 146         except IOError:
 147                 pass