from ganeti import netutils
from ganeti import runtime
from ganeti import mcpu
+from ganeti import compat
_BOOT_ID_PATH = "/proc/sys/kernel/random/boot_id"
#: Valid LVS output line regex
_LVSLINE_REGEX = re.compile("^ *([^|]+)\|([^|]+)\|([0-9.]+)\|([^|]{6})\|?$")
+# Actions for the master setup script
+_MASTER_START = "start"
+_MASTER_STOP = "stop"
+
class RPCFail(Exception):
"""Class denoting RPC failure.
@param hooks_path: path of the hooks
@type env_builder_fn: function
@param env_builder_fn: function that returns a dictionary containing the
- environment variables for the hooks.
+ environment variables for the hooks. Will get all the parameters of the
+ decorated function.
@raise RPCFail: in case of pre-hook failure
"""
_, myself = ssconf.GetMasterAndMyself()
nodes = ([myself], [myself]) # these hooks run locally
+ env_fn = compat.partial(env_builder_fn, *args, **kwargs)
+
cfg = _GetConfig()
hr = HooksRunner()
hm = mcpu.HooksMaster(hook_opcode, hooks_path, nodes, hr.RunLocalHooks,
- None, env_builder_fn, logging.warning,
- cfg.GetClusterName(), cfg.GetMasterNode())
+ None, env_fn, logging.warning, cfg.GetClusterName(),
+ cfg.GetMasterNode())
hm.RunPhase(constants.HOOKS_PHASE_PRE)
result = fn(*args, **kwargs)
return decorator
-def _BuildMasterIpEnv():
+def _BuildMasterIpEnv(master_params, use_external_mip_script=None):
"""Builds environment variables for master IP hooks.
+ @type master_params: L{objects.MasterNetworkParameters}
+ @param master_params: network parameters of the master
+ @type use_external_mip_script: boolean
+ @param use_external_mip_script: whether to use an external master IP
+ address setup script (unused, but necessary per the implementation of the
+ _RunLocalHooks decorator)
+
"""
- master_netdev, master_ip, _, family, master_netmask = GetMasterInfo()
- version = str(netutils.IPAddress.GetVersionFromAddressFamily(family))
+ # pylint: disable=W0613
+ ver = netutils.IPAddress.GetVersionFromAddressFamily(master_params.ip_family)
env = {
- "MASTER_NETDEV": master_netdev,
- "MASTER_IP": master_ip,
- "MASTER_NETMASK": master_netmask,
- "CLUSTER_IP_VERSION": version,
+ "MASTER_NETDEV": master_params.netdev,
+ "MASTER_IP": master_params.ip,
+ "MASTER_NETMASK": str(master_params.netmask),
+ "CLUSTER_IP_VERSION": str(ver),
}
return env
-@RunLocalHooks(constants.FAKE_OP_MASTER_TURNUP, "master-ip-turnup",
- _BuildMasterIpEnv)
-def ActivateMasterIp(master_ip, master_netmask, master_netdev, family):
- """Activate the IP address of the master daemon.
+def _RunMasterSetupScript(master_params, action, use_external_mip_script):
+ """Execute the master IP address setup script.
- @param master_ip: the master IP
- @param master_netmask: the master IP netmask
- @param master_netdev: the master network device
- @param family: the IP family
+ @type master_params: L{objects.MasterNetworkParameters}
+ @param master_params: network parameters of the master
+ @type action: string
+ @param action: action to pass to the script. Must be one of
+ L{backend._MASTER_START} or L{backend._MASTER_STOP}
+ @type use_external_mip_script: boolean
+ @param use_external_mip_script: whether to use an external master IP
+ address setup script
+ @raise backend.RPCFail: if there are errors during the execution of the
+ script
"""
- err_msg = None
- if netutils.TcpPing(master_ip, constants.DEFAULT_NODED_PORT):
- if netutils.IPAddress.Own(master_ip):
- # we already have the ip:
- logging.debug("Master IP already configured, doing nothing")
- else:
- err_msg = "Someone else has the master ip, not activating"
- logging.error(err_msg)
+ env = _BuildMasterIpEnv(master_params)
+
+ if use_external_mip_script:
+ setup_script = constants.EXTERNAL_MASTER_SETUP_SCRIPT
else:
- ipcls = netutils.IPAddress.GetClassFromIpFamily(family)
+ setup_script = constants.DEFAULT_MASTER_SETUP_SCRIPT
- result = utils.RunCmd([constants.IP_COMMAND_PATH, "address", "add",
- "%s/%s" % (master_ip, master_netmask),
- "dev", master_netdev, "label",
- "%s:0" % master_netdev])
- if result.failed:
- err_msg = "Can't activate master IP: %s" % result.output
- logging.error(err_msg)
+ result = utils.RunCmd([setup_script, action], env=env, reset_env=True)
+
+ if result.failed:
+ _Fail("Failed to %s the master IP. Script return value: %s" %
+ (action, result.exit_code), log=True)
- else:
- # we ignore the exit code of the following cmds
- if ipcls == netutils.IP4Address:
- utils.RunCmd(["arping", "-q", "-U", "-c 3", "-I", master_netdev, "-s",
- master_ip, master_ip])
- elif ipcls == netutils.IP6Address:
- try:
- utils.RunCmd(["ndisc6", "-q", "-r 3", master_ip, master_netdev])
- except errors.OpExecError:
- # TODO: Better error reporting
- logging.warning("Can't execute ndisc6, please install if missing")
- if err_msg:
- _Fail(err_msg)
+@RunLocalHooks(constants.FAKE_OP_MASTER_TURNUP, "master-ip-turnup",
+ _BuildMasterIpEnv)
+def ActivateMasterIp(master_params, use_external_mip_script):
+ """Activate the IP address of the master daemon.
+
+ @type master_params: L{objects.MasterNetworkParameters}
+ @param master_params: network parameters of the master
+ @type use_external_mip_script: boolean
+ @param use_external_mip_script: whether to use an external master IP
+ address setup script
+ @raise RPCFail: in case of errors during the IP startup
+
+ """
+ _RunMasterSetupScript(master_params, _MASTER_START,
+ use_external_mip_script)
def StartMasterDaemons(no_voting):
@RunLocalHooks(constants.FAKE_OP_MASTER_TURNDOWN, "master-ip-turndown",
_BuildMasterIpEnv)
-def DeactivateMasterIp(master_ip, master_netmask, master_netdev):
+def DeactivateMasterIp(master_params, use_external_mip_script):
"""Deactivate the master IP on this node.
- @param master_ip: the master IP
- @param master_netmask: the master IP netmask
- @param master_netdev: the master network device
+ @type master_params: L{objects.MasterNetworkParameters}
+ @param master_params: network parameters of the master
+ @type use_external_mip_script: boolean
+ @param use_external_mip_script: whether to use an external master IP
+ address setup script
+ @raise RPCFail: in case of errors during the IP turndown
"""
- # TODO: log and report back to the caller the error failures; we
- # need to decide in which case we fail the RPC for this
-
- result = utils.RunCmd([constants.IP_COMMAND_PATH, "address", "del",
- "%s/%s" % (master_ip, master_netmask),
- "dev", master_netdev])
- if result.failed:
- logging.error("Can't remove the master IP, error: %s", result.output)
- # but otherwise ignore the failure
+ _RunMasterSetupScript(master_params, _MASTER_STOP,
+ use_external_mip_script)
def StopMasterDaemons():
if old_netmask == netmask:
return
+ if not netutils.IPAddress.Own(master_ip):
+ _Fail("The master IP address is not up, not attempting to change its"
+ " netmask")
+
result = utils.RunCmd([constants.IP_COMMAND_PATH, "address", "add",
"%s/%s" % (master_ip, netmask),
"dev", master_netdev, "label",
"%s:0" % master_netdev])
if result.failed:
- _Fail("Could not change the master IP netmask")
+ _Fail("Could not set the new netmask on the master IP address")
result = utils.RunCmd([constants.IP_COMMAND_PATH, "address", "del",
"%s/%s" % (master_ip, old_netmask),
"dev", master_netdev, "label",
"%s:0" % master_netdev])
if result.failed:
- _Fail("Could not change the master IP netmask")
+ _Fail("Could not bring down the master IP address with the old netmask")
def EtcHostsModify(mode, host, ip):
result[constants.NV_MASTERIP] = netutils.TcpPing(master_ip, port,
source=source)
+ if constants.NV_USERSCRIPTS in what:
+ result[constants.NV_USERSCRIPTS] = \
+ [script for script in what[constants.NV_USERSCRIPTS]
+ if not (os.path.exists(script) and os.access(script, os.X_OK))]
+
if constants.NV_OOB_PATHS in what:
result[constants.NV_OOB_PATHS] = tmp = []
for path in what[constants.NV_OOB_PATHS]:
projects / ganeti-local / blobdiff