def cntnr_ip_map(self):
"""
Return mapping of container names to IP addresses
"""
# map container eth0 ifindex's to names
dc = DockerContainers(self)
names = dc.list_container_names()
jsons = [dc.json_by_name(name)[0] for name in names]
njs = dict(zip(names, jsons))
result = {}
for name in [_ for _ in njs if njs[_]["NetworkSettings"]["IPAddress"] != ""]:
result[name] = njs[name]["NetworkSettings"]["IPAddress"]
self.logdebug("%s -> %s", name, result[name])
return result
def cntnr_ip_map(self):
"""
Return mapping of container names to IP addresses
"""
# map container eth0 ifindex's to names
dc = DockerContainers(self)
names = dc.list_container_names()
jsons = [dc.json_by_name(name)[0] for name in names]
njs = dict(list(zip(names, jsons)))
result = {}
for name in [_ for _ in njs
if njs[_]["NetworkSettings"]["IPAddress"] != ""]:
result[name] = njs[name]["NetworkSettings"]["IPAddress"]
self.logdebug("%s -> %s", name, result[name])
return result
def cntnr_veth_map(self):
"""
Return mapping of container names to veth* devices
"""
# map ifindex's to ``veth*`` names on host
tmp_cmd = 'brctl show'
cmd_result = utils.run(tmp_cmd, verbose=False)
veths = re.findall(r'veth\w+', cmd_result.stdout)
ifindex = [
int(open('/sys/class/net/%s/ifindex' % veth, 'r').read())
for veth in veths
]
index_host = dict(zip(ifindex, veths))
self.logdebug("Host index to veth: %s", index_host)
# map container eth0 ifindex's to names
dc = DockerContainers(self)
names = dc.list_container_names()
jsons = [dc.json_by_name(name)[0] for name in names]
njs = dict(zip(names, jsons))
result = {}
for name in [
_name for (_name, json) in njs.iteritems()
if json["NetworkSettings"]["MacAddress"] != ""
]:
subargs = [name, 'cat', '/sys/class/net/eth0/ifindex']
dkrcmd = DockerCmd(self, 'exec', subargs, verbose=False)
dkrcmd.execute()
if dkrcmd.exit_status == 0:
# Host's ifindex always one greater than container's
ifindex = int(dkrcmd.stdout) + 1
# State could have changed during looping
if ifindex in index_host:
result[name] = index_host[ifindex]
else:
self.logdebug("Host veth %s dissapeared while mapping %s",
ifindex, name)
else:
self.logdebug("Can't examine eth0 for container %s", name)
self.logdebug("Container names to veth: %s", result)
return result
def cntnr_veth_map(self):
"""
Return mapping of container names to veth* devices
"""
# map ifindex's to ``veth*`` names on host
tmp_cmd = 'brctl show'
cmd_result = utils.run(tmp_cmd, verbose=False)
veths = re.findall(r'veth\w+', cmd_result.stdout)
ifindex = [int(open('/sys/class/net/%s/ifindex' % veth, 'r').read())
for veth in veths]
index_host = dict(zip(ifindex, veths))
self.logdebug("Host index to veth: %s", index_host)
# map container eth0 ifindex's to names
dc = DockerContainers(self)
names = dc.list_container_names()
jsons = [dc.json_by_name(name)[0] for name in names]
njs = dict(zip(names, jsons))
result = {}
for name in [_name for (_name, json) in njs.iteritems()
if json["NetworkSettings"]["MacAddress"] != ""]:
subargs = [name, 'cat', '/sys/class/net/eth0/ifindex']
dkrcmd = DockerCmd(self, 'exec', subargs, verbose=False)
dkrcmd.execute()
if dkrcmd.exit_status == 0:
# Host's ifindex always one greater than container's
ifindex = int(dkrcmd.stdout) + 1
# State could have changed during looping
if ifindex in index_host:
result[name] = index_host[ifindex]
else:
self.logdebug("Host veth %s dissapeared while mapping %s",
ifindex, name)
else:
self.logdebug("Can't examine eth0 for container %s", name)
self.logdebug("Container names to veth: %s", result)
return result
