e415e4d235
Sometimes you just want to know what machines a given partition should be on, or what handoffs that partition would use if needed. We've been meaning to add this option to swift-get-nodes for quite some time, but I just finally got to it. Example: swift-get-nodes /etc/swift/object.ring.gz -p 123 I tried to leave as much of the existing swift-get-nodes unaltered, so the output isn't exactly distilled to just what you'd need for getting a partition's nodes. But it should suffice for what it is, an admin tool. Change-Id: I438400ddc0eecbf9c48266e7f38a2e4f0765f374
133 lines
4.4 KiB
Python
Executable File
133 lines
4.4 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright (c) 2010-2012 OpenStack, LLC.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import optparse
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import sys
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import urllib
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from swift.common.ring import Ring
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from swift.common.utils import hash_path
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parser = optparse.OptionParser()
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parser.add_option('-a', '--all', action='store_true',
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help='Show all handoff nodes')
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parser.add_option('-p', '--partition', metavar='PARTITION',
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help='Show nodes for a given partition')
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(options, args) = parser.parse_args()
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if (len(args) < 2 or len(args) > 4) and \
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(options.partition is None or not args):
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print 'Usage: %s [-a] <ring.gz> <account> [<container>] [<object>]' \
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% sys.argv[0]
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print ' Or: %s [-a] <ring.gz> -p partition' % sys.argv[0]
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print 'Shows the nodes responsible for the item specified.'
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print 'Example:'
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print ' $ %s /etc/swift/account.ring.gz MyAccount' % sys.argv[0]
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print ' Partition 5743883'
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print ' Hash 96ae332a60b58910784e4417a03e1ad0'
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print ' 10.1.1.7:8000 sdd1'
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print ' 10.1.9.2:8000 sdb1'
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print ' 10.1.5.5:8000 sdf1'
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print ' 10.1.5.9:8000 sdt1 # [Handoff]'
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sys.exit(1)
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ringloc = None
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account = None
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container = None
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obj = None
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if len(args) == 4:
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# Account, Container and Object
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ring_file, account, container, obj = args
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ring = Ring(ring_file)
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hash_str = hash_path(account, container, obj)
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part, nodes = ring.get_nodes(account, container, obj)
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target = "%s/%s/%s" % (account, container, obj)
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loc = 'objects'
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elif len(args) == 3:
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# Account, Container
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ring_file, account, container = args
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ring = Ring(ring_file)
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hash_str = hash_path(account, container)
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part, nodes = ring.get_nodes(account, container)
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target = "%s/%s" % (account, container)
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loc = 'containers'
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elif len(args) == 2:
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# Account
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ring_file, account = args
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ring = Ring(ring_file)
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hash_str = hash_path(account)
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part, nodes = ring.get_nodes(account)
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target = "%s" % (account)
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loc = 'accounts'
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elif len(args) == 1:
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# Partition
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ring_file = args[0]
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ring = Ring(ring_file)
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hash_str = None
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part = int(options.partition)
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nodes = ring.get_part_nodes(part)
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target = ''
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loc = ring_file.rsplit('/', 1)[-1].split('.', 1)[0]
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if loc in ('account', 'container', 'object'):
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loc += 's'
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else:
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loc = '<type>'
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more_nodes = []
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for more_node in ring.get_more_nodes(part):
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more_nodes.append(more_node)
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if not options.all and len(more_nodes) >= ring.replica_count:
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break
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print '\nAccount \t%s' % account
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print 'Container\t%s' % container
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print 'Object \t%s\n' % obj
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print '\nPartition\t%s' % part
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print 'Hash \t%s\n' % hash_str
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for node in nodes:
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print 'Server:Port Device\t%s:%s %s' % (node['ip'], node['port'],
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node['device'])
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for mnode in more_nodes:
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print 'Server:Port Device\t%s:%s %s\t [Handoff]' \
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% (mnode['ip'], mnode['port'], mnode['device'])
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print "\n"
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for node in nodes:
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print 'curl -I -XHEAD "http://%s:%s/%s/%s/%s"' \
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% (node['ip'], node['port'], node['device'], part,
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urllib.quote(target))
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for mnode in more_nodes:
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print 'curl -I -XHEAD "http://%s:%s/%s/%s/%s" # [Handoff]' \
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% (mnode['ip'], mnode['port'], mnode['device'], part,
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urllib.quote(target))
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print "\n"
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for node in nodes:
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if hash_str:
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print 'ssh %s "ls -lah /srv/node/%s/%s/%s/%s/%s/"' % (
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node['ip'], node['device'], loc, part, hash_str[-3:], hash_str)
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else:
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print 'ssh %s "ls -lah /srv/node/%s/%s/%s/"' % (
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node['ip'], node['device'], loc, part)
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for mnode in more_nodes:
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if hash_str:
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print 'ssh %s "ls -lah /srv/node/%s/%s/%s/%s/%s/" # [Handoff]' % (
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mnode['ip'], mnode['device'], loc, part, hash_str[-3:], hash_str)
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else:
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print 'ssh %s "ls -lah /srv/node/%s/%s/%s/" # [Handoff]' % (
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mnode['ip'], mnode['device'], loc, part)
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