def test_snat_2():
"""
Title: Emulate Cassandra failure
basically the same one as test_snat_1, but the difference is
how and when to inject failures.
"""
p1 = add_bgp_1(route_snat)
set_filters('router-000-001', 'pre_filter_snat_ip', 'post_filter_snat_ip')
try:
for failure in (NoFailure(), NetifFailure(NS_CASSANDRA_1, 'eth0', 30),
NoFailure(), NetifFailure(NS_CASSANDRA_2, 'eth0', 30),
NetifFailure(NS_CASSANDRA_3, 'eth0', 30), NoFailure()):
failure.inject()
try:
for i in range(0, 10):
ping_inet(count=1, retry_count=5)
finally:
failure.eject()
finally:
unset_filters('router-000-001')
clear_bgp(p1)
failure = PktFailure(NS_BGP_PEER_1, 'eth1', 30)
failure.inject()
try:
ping_inet() # BGP #2 is lost
finally:
failure.eject()
ping_inet() # BGP #2 is back
clear_bgp(p1)
clear_bgp(p2)
@attr(version="v1.2.0", slow=True)
@failures(NoFailure(), NetifFailure(NS_CASSANDRA_1, 'eth0', 30), NoFailure(),
NetifFailure(NS_CASSANDRA_2, 'eth0', 30),
NetifFailure(NS_CASSANDRA_3, 'eth0', 30), NoFailure())
@bindings(binding_uplink_1, binding_uplink_2, binding_indirect)
def test_snat_1():
"""
Title: Emulate Cassandra failure
Scenario 1:
Given: one uplink
When: inject network interface failure in ONE of Cassandra nodes
Then: ICMP echo RR should work
"""
p1 = add_bgp_1(route_snat)
except subprocess.CalledProcessError as e:
# we just want to let dhclient go
pass
# Assert that the interface gets ip address
assert iface.get_cidr() == '172.16.1.101/24'
#TODO(tomoe): assert for default gw and static routes with opt 121
assert iface.get_num_routes() > 0
# MTU should be 1450 (interface mtu minus 50B, the max of gre/vxlan overhead)
assert iface.get_mtu() == "1450"
@attr(version="v1.2.0", slow=False)
@failures(NoFailure(), NetifFailure(NS_ZOOKEEPER_1, 'eth0', 30),
NetifFailure(NS_ZOOKEEPER_2, 'eth0', 30),
NetifFailure(NS_ZOOKEEPER_3, 'eth0', 30))
@bindings(bindings1, bindings2)
def test_icmp():
"""
Title: ICMP reachability over bridge
Scenario 1:
When: a VM sends ICMP echo request with ping command
Then: the receiver VM should receive the ICMP echo packet.
And: the ping command succeeds
"""
sender = BM.get_iface_for_port('bridge-000-001', 1)
receiver = BM.get_iface_for_port('bridge-000-001', 3)