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Split control and log to two separate tubs, remove control knobs.
This also removes the tahoe.cfg keys that would have configured the control-port. And it deletes the logport.furl file before asking the Tub to re-create it, because we're now using an ephemeral Tub (so we're not persisting the private key, so the tubid will change each time). closes ticket:2794
This commit is contained in:
Brian Warner
parent
e5ffbdbcdf
commit
7d692d0afd
@ -85,6 +85,7 @@ class Node(service.MultiService):
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self.init_tempdir()
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self.create_tub()
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self.create_control_tub()
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self.create_log_tub()
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self.logSource="Node"
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self.setup_logging()
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@ -167,16 +168,6 @@ class Node(service.MultiService):
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return "tcp:%d" % int(s)
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return s
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def get_control_tub_port(self):
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# return a descriptor string
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cfg_tubport = self.get_config("node", "control_tub.port", "")
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if cfg_tubport:
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return self._convert_tub_port(cfg_tubport)
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# XXX should really be: tcp:interface=127.0.0.1:1234
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tubport = "tcp:%d" % iputil.allocate_tcp_port()
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return tubport
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def get_tub_port(self):
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# return a descriptor string
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cfg_tubport = self.get_config("node", "tub.port", "")
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@ -191,16 +182,6 @@ class Node(service.MultiService):
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fileutil.write_atomically(self._portnumfile, tubport + "\n", mode="")
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return tubport
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def get_control_tub_location(self, tubport):
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location = self.get_config("node", "control_tub.location", "127.0.0.1")
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# Replace the location "AUTO", if present, with the detected local
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# addresses. Don't probe for local addresses unless necessary.
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split_location = location.split(",")
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new_locations = []
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for loc in split_location:
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new_locations.append(loc)
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return ",".join(new_locations)
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def get_tub_location(self, tubport):
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location = self.get_config("node", "tub.location", "AUTO")
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# Replace the location "AUTO", if present, with the detected local
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@ -219,32 +200,13 @@ class Node(service.MultiService):
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new_locations.append(loc)
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return ",".join(new_locations)
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def create_control_tub(self):
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certfile = os.path.join(self.basedir, "private", self.CERTFILE)
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self.control_tub = Tub(certFile=certfile)
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self.control_tub_options = {
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"logLocalFailures": True,
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"logRemoteFailures": True,
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"expose-remote-exception-types": False,
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}
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for (name, value) in self.control_tub_options.items():
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self.control_tub.setOption(name, value)
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tubport = self.get_control_tub_port()
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if tubport in ("0", "tcp:0"):
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raise ValueError("tub.port cannot be 0: you must choose")
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self.control_tub.listenOn(tubport)
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location = self.get_control_tub_location(tubport)
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self.control_tub.setLocation(location)
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self.log("Control/logging Tub location set to %s" % (location,))
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# the Tub is now ready for tub.registerReference()
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self.control_tub.setServiceParent(self)
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def create_tub(self):
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certfile = os.path.join(self.basedir, "private", self.CERTFILE)
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self.tub = Tub(certFile=certfile)
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self.tub_options = {
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"logLocalFailures": True,
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"logRemoteFailures": True,
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"expose-remote-exception-types": False,
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}
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# see #521 for a discussion of how to pick these timeout values.
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@ -273,6 +235,33 @@ class Node(service.MultiService):
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# the Tub is now ready for tub.registerReference()
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self.tub.setServiceParent(self)
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def create_control_tub(self):
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# the control port uses a localhost-only ephemeral Tub, with no
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# control over the listening port or location
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self.control_tub = Tub()
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portnum = iputil.allocate_tcp_port()
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port = "tcp:%d:interface=127.0.0.1" % portnum
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location = "tcp:127.0.0.1:%d" % portnum
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self.control_tub.listenOn(port)
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self.control_tub.setLocation(location)
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self.log("Control Tub location set to %s" % (location,))
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self.control_tub.setServiceParent(self)
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def create_log_tub(self):
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# The logport uses a localhost-only ephemeral Tub, with no control
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# over the listening port or location. This might change if we
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# discover a compelling reason for it in the future (e.g. being able
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# to use "flogtool tail" against a remote server), but for now I
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# think we can live without it.
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self.log_tub = Tub()
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portnum = iputil.allocate_tcp_port()
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port = "tcp:%d:interface=127.0.0.1" % portnum
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location = "tcp:127.0.0.1:%d" % portnum
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self.log_tub.listenOn(port)
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self.log_tub.setLocation(location)
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self.log("Log Tub location set to %s" % (location,))
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self.log_tub.setServiceParent(self)
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def get_app_versions(self):
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# TODO: merge this with allmydata.get_package_versions
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return dict(app_versions.versions)
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@ -392,12 +381,14 @@ class Node(service.MultiService):
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# TODO: twisted >2.5.0 offers maxRotatedFiles=50
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lgfurl_file = os.path.join(self.basedir, "private", "logport.furl").encode(get_filesystem_encoding())
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self.control_tub.setOption("logport-furlfile", lgfurl_file)
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if os.path.exists(lgfurl_file):
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os.remove(lgfurl_file)
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self.log_tub.setOption("logport-furlfile", lgfurl_file)
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lgfurl = self.get_config("node", "log_gatherer.furl", "")
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if lgfurl:
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# this is in addition to the contents of log-gatherer-furlfile
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self.control_tub.setOption("log-gatherer-furl", lgfurl)
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self.control_tub.setOption("log-gatherer-furlfile",
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self.log_tub.setOption("log-gatherer-furl", lgfurl)
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self.log_tub.setOption("log-gatherer-furlfile",
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os.path.join(self.basedir, "log_gatherer.furl"))
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incident_dir = os.path.join(self.basedir, "logs", "incidents")
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14
topfiles/2794.change
Normal file
14
topfiles/2794.change
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@ -0,0 +1,14 @@
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The little-used "control port" now uses a separate (ephemeral) Tub. This
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means the FURL changes each time the node is restarted, and it only listens
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on the loopback (127.0.0.1) interface, on a random port. As the control port
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is only used by some automated tests (check_memory, check_speed), this
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shouldn't affect anyone.
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The slightly-more-used "log port" now also uses a separate (ephemeral) Tub,
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with the same consequences. The lack of a stable (and externally-reachable)
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logport.furl means it is no longer possible to use `flogtool tail FURL`
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against a distant Tahoe server, however `flogtool tail
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.../nodedir/private/logport.furl` still works just fine (and is the more
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common use case anyways). We might bring back the ability to configure the
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port and location of the logport in the future, if there is sufficient
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demand, but for now it seems better to avoid the complexity.
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