def check_dns_function():
config = configuration.Config.load_from_project()
workers = [node for node in config.nodes if node.kind == "worker"]
if len(workers) < 1:
command.fail("expected at least one worker node")
worker = random.choice(workers)
print("trying dns functionality test with", worker)
container_command = "nslookup kubernetes.default.svc.hyades.local 172.28.0.2"
server_command = [
"rkt", "run", "homeworld.mit.edu/debian", "--exec", "/bin/bash", "--",
"-c",
setup.escape_shell(container_command)
]
results = subprocess.check_output([
"ssh",
"root@%s.%s" % (worker.hostname, config.external_domain), "--"
] + server_command)
last_line = results.replace(b"\r\n",
b"\n").replace(b"\0",
b'').strip().split(b"\n")[-1]
if not last_line.endswith(b"Address: 172.28.0.1"):
command.fail("unexpected last line: %s" % repr(last_line.decode()))
print("dns-addon seems to work!")
def talk():
if not event.wait(25):
command.fail(
"timed out while waiting for IPv4 address of listener")
address = found_address[0]
if address is None:
command.fail("no address was specified by listener")
container_command = "ping -c 1 %s && echo 'PING RESULT SUCCESS' || echo 'PING RESULT FAIL'" % address
server_command = [
"rkt", "run", "--net=rkt.kubernetes.io",
"homeworld.mit.edu/debian", "--exec", "/bin/bash", "--", "-c",
setup.escape_shell(container_command)
]
results = subprocess.check_output([
"ssh",
"root@%s.%s" %
(worker_talker.hostname, config.external_domain), "--"
] + server_command)
last_line = results.replace(b"\r\n", b"\n").replace(
b"\0", b'').strip().split(b"\n")[-1]
if b"PING RESULT FAIL" in last_line:
command.fail(
"was not able to ping the target container; is flannel working?"
)
elif b"PING RESULT SUCCESS" not in last_line:
command.fail("could not launch container to test flannel properly")
return True
def check_aci_pull():
config = configuration.Config.load_from_project()
workers = [node for node in config.nodes if node.kind == "worker"]
if not workers:
command.fail("expected nonzero number of worker nodes")
worker = random.choice(workers)
print("trying container pulling on: %s" % worker)
container_command = "ping -c 1 8.8.8.8 && echo 'PING RESULT SUCCESS' || echo 'PING RESULT FAIL'"
server_command = [
"rkt", "run", "--pull-policy=update", "homeworld.mit.edu/debian",
"--exec", "/bin/bash", "--", "-c",
setup.escape_shell(container_command)
]
results = subprocess.check_output([
"ssh",
"root@%s.%s" % (worker.hostname, config.external_domain), "--"
] + server_command)
last_line = results.replace(b"\r\n",
b"\n").replace(b"\0",
b'').strip().split(b"\n")[-1]
if b"PING RESULT FAIL" in last_line:
if b"PING RESULT SUCCESS" in last_line:
command.fail(
"should not have seen both success and failure markers in last line"
)
command.fail(
"cluster network probably not up (could not ping 8.8.8.8)")
elif b"PING RESULT SUCCESS" not in last_line:
command.fail(
"container does not seem to have launched properly; container launches are likely broken (line = %s)"
% repr(last_line))
print("container seems to be launched, with the correct network!")
def listen():
try:
container_command = "ip -o addr show dev eth0 to 172.18/16 primary && sleep 15"
server_command = [
"rkt", "run", "--net=rkt.kubernetes.io",
"homeworld.mit.edu/debian", "--", "-c",
setup.escape_shell(container_command)
]
cmd = [
"ssh",
"root@%s.%s" %
(worker_listener.hostname, config.external_domain), "--"
] + server_command
with subprocess.Popen(cmd,
stdout=subprocess.PIPE,
bufsize=1,
universal_newlines=True) as process:
stdout = process.stdout.readline()
if "scope" not in stdout:
command.fail(
"could not find scope line in ip addr output (%s)" %
repr(stdout))
parts = stdout.split(" ")
if "inet" not in parts:
command.fail(
"could not find inet address in ip addr output")
address = parts[parts.index("inet") + 1]
if not address.endswith("/24"):
command.fail(
"expected address that ended in /24, not '%s'" %
address)
address = address[:-3]
if address.count(".") != 3:
command.fail("expected valid IPv4 address, not '%s'" %
address)
if not address.replace(".", "").isdigit():
command.fail("expected valid IPv4 address, not '%s'" %
address)
found_address[0] = address
event.set()
process.communicate(timeout=20)
finally:
event.set()
return True