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# Copyright (C) 2013 Kristoffer Gronlund <kgronlund@suse.com>
# See COPYING for license information.
import os
from . import command, sh
from . import completers
from . import utils
from . import corosync
from . import parallax
from . import bootstrap
from . import log
from .service_manager import ServiceManager
logger = log.setup_logger(__name__)
def _push_completer(args):
try:
n = utils.list_cluster_nodes()
n.remove(utils.this_node())
if args[-1] in n:
# continue complete
return [args[-1]]
for item in args:
if item in n:
n.remove(item)
return n
except:
n = []
def _diff_nodes(args):
try:
if len(args) > 3:
return []
n = utils.list_cluster_nodes()
if args[-1] in n:
# continue complete
return [args[-1]]
for item in args:
if item in n:
# remove already complete item
n.remove(item)
return n
except:
return []
class Corosync(command.UI):
'''
Corosync is the underlying messaging layer for most HA clusters.
This level provides commands for editing and managing the corosync
configuration.
'''
name = "corosync"
def requires(self):
return corosync.check_tools()
@command.completers(completers.choice(['ring', 'quorum', 'qdevice', 'qnetd']))
def do_status(self, context, status_type="ring"):
'''
Quick cluster health status. Corosync status or QNetd status
'''
if not ServiceManager(sh.ClusterShellAdaptorForLocalShell(sh.LocalShell())).service_is_active("corosync.service"):
logger.error("corosync.service is not running!")
return False
try:
corosync.query_status(status_type)
except ValueError as err:
logger.error(str(err))
return False
@command.skill_level('administrator')
def do_reload(self, context):
'''
Reload the corosync configuration
'''
return corosync.cfgtool('-R')[0] == 0
@command.skill_level('administrator')
@command.completers_repeating(_push_completer)
def do_push(self, context, *nodes):
'''
Push corosync configuration to other cluster nodes.
If no nodes are provided, configuration is pushed to
all other cluster nodes.
'''
if not nodes:
nodes = utils.list_cluster_nodes()
nodes.remove(utils.this_node())
return corosync.push_configuration(nodes)
@command.skill_level('administrator')
@command.completers(_push_completer)
def do_pull(self, context, node):
'''
Pull corosync configuration from another node.
'''
return corosync.pull_configuration(node)
@command.completers_repeating(_diff_nodes)
def do_diff(self, context, *nodes):
'''
Compare corosync configuration between nodes.
'''
checksum = False
if nodes and nodes[0] == '--checksum':
checksum = True
nodes = nodes[1:]
if not nodes:
nodes = utils.list_cluster_nodes()
return corosync.diff_configuration(nodes, checksum=checksum)
@command.skill_level('administrator')
def do_edit(self, context):
'''
Edit the corosync configuration.
'''
cfg = corosync.conf()
try:
utils.edit_file_ext(cfg, template='')
except IOError as e:
context.fatal_error(str(e))
def do_show(self, context):
'''
Display the corosync configuration.
'''
cfg = corosync.conf()
if not os.path.isfile(cfg):
context.fatal_error("No corosync configuration found on this node.")
utils.page_string(open(cfg).read())
def do_log(self, context):
'''
Display the corosync log file (if any).
'''
logfile = corosync.get_value('logging.logfile')
if not logfile:
context.fatal_error("No corosync log file configured")
utils.page_file(logfile)
@command.name('add-node')
@command.alias('add_node')
@command.skill_level('administrator')
def do_addnode(self, context, addr, name=None):
"Add a node to the corosync nodelist"
corosync.add_node(addr, name)
@command.name('del-node')
@command.alias('del_node')
@command.skill_level('administrator')
@command.completers(_push_completer)
def do_delnode(self, context, name):
"Remove a node from the corosync nodelist"
transport = corosync.get_value('totem.transport')
if not transport or transport != "udpu":
context.fatal_error("Only support udpu transport now")
corosync.del_node(name)
@command.skill_level('administrator')
@command.completers(completers.call(corosync.get_all_paths))
def do_get(self, context, path):
"Get a corosync configuration value"
for v in corosync.get_values(path):
print(v)
@command.skill_level('administrator')
@command.completers(completers.call(corosync.get_all_paths))
def do_set(self, context, path, value):
"Set a corosync configuration value"
corosync.set_value(path, value)
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