def endpoint_profile_show(hostname, orchestrator_id, workload_id, endpoint_id):
"""
List the profiles assigned to a particular endpoint.
:param hostname: The hostname.
:param orchestrator_id: The orchestrator ID.
:param workload_id: The workload ID.
:param endpoint_id: The endpoint ID.
:return: None
"""
try:
endpoint = client.get_endpoint(hostname=hostname,
orchestrator_id=orchestrator_id,
workload_id=workload_id,
endpoint_id=endpoint_id)
except MultipleEndpointsMatch:
print "Failed to list profiles in endpoint.\n"
print_paragraph("More than 1 endpoint matches the provided "
"criteria. Please provide additional parameters to "
"refine the search.")
sys.exit(1)
except KeyError:
print "Failed to list profiles in endpoint.\n"
print_paragraph("Endpoint %s is unknown to Calico.\n" % endpoint_id)
sys.exit(1)
if endpoint.profile_ids:
x = PrettyTable(["Name"], sortby="Name")
for name in endpoint.profile_ids:
x.add_row([name])
print str(x) + "\n"
else:
print "Endpoint has no profiles associated with it."
def endpoint_profile_show(hostname, orchestrator_id, workload_id, endpoint_id):
"""
List the profiles assigned to a particular endpoint.
:param hostname: The hostname.
:param orchestrator_id: The orchestrator ID.
:param workload_id: The workload ID.
:param endpoint_id: The endpoint ID.
:return: None
"""
try:
endpoint = client.get_endpoint(hostname=hostname,
orchestrator_id=orchestrator_id,
workload_id=workload_id,
endpoint_id=endpoint_id)
except MultipleEndpointsMatch:
print "Failed to list profiles in endpoint.\n"
print_paragraph("More than 1 endpoint matches the provided "
"criteria. Please provide additional parameters to "
"refine the search.")
sys.exit(1)
except KeyError:
print "Failed to list profiles in endpoint.\n"
print_paragraph("Endpoint %s is unknown to Calico.\n" % endpoint_id)
sys.exit(1)
if endpoint.profile_ids:
x = PrettyTable(["Name"], sortby="Name")
for name in endpoint.profile_ids:
x.add_row([name])
print str(x) + "\n"
else:
print "Endpoint has no profiles associated with it."
def container_ip_remove(container_name, ip, interface):
"""
Add an IP address to an existing Calico networked container.
:param container_name: The name of the container.
:param ip: The IP to add
:param interface: The name of the interface in the container.
:return: None
"""
address = IPAddress(ip)
# The netns manipulations must be done as root.
enforce_root()
pool = get_pool_or_exit(address)
info = get_container_info_or_exit(container_name)
container_id = info["Id"]
# Check the container is actually running.
if not info["State"]["Running"]:
print "%s is not currently running." % container_name
sys.exit(1)
# Check that the container is already networked
try:
endpoint = client.get_endpoint(hostname=hostname, orchestrator_id=ORCHESTRATOR_ID, workload_id=container_id)
if address.version == 4:
nets = endpoint.ipv4_nets
else:
nets = endpoint.ipv6_nets
if not IPNetwork(address) in nets:
print "IP address is not assigned to container. Aborting."
sys.exit(1)
except KeyError:
print "Container is unknown to Calico."
sys.exit(1)
try:
nets.remove(IPNetwork(address))
client.update_endpoint(endpoint)
except (KeyError, ValueError):
print "Error updating datastore. Aborting."
sys.exit(1)
try:
container_pid = info["State"]["Pid"]
netns.remove_ip_from_ns_veth(container_pid, address, interface)
except CalledProcessError:
print "Error updating networking in container. Aborting."
sys.exit(1)
client.unassign_address(pool, ip)
print "IP %s removed from %s" % (ip, container_name)
def container_remove(container_id):
"""
Remove a container (on this host) from Calico networking.
The container may be left in a state without any working networking.
If there is a network adaptor in the host namespace used by the container
then it is removed.
:param container_id: The namespace path or the ID of the container.
"""
# The netns manipulations must be done as root.
enforce_root()
# Resolve the name to ID.
if container_id.startswith("/") and os.path.exists(container_id):
# The ID is a path. Don't do any docker lookups
workload_id = escape_etcd(container_id)
orchestrator_id = NAMESPACE_ORCHESTRATOR_ID
else:
workload_id = get_workload_id(container_id)
orchestrator_id = DOCKER_ORCHESTRATOR_ID
# Find the endpoint ID. We need this to find any ACL rules
try:
endpoint = client.get_endpoint(hostname=hostname,
orchestrator_id=orchestrator_id,
workload_id=workload_id)
except KeyError:
print "Container %s doesn't contain any endpoints" % container_id
sys.exit(1)
# Remove any IP address assignments that this endpoint has
for net in endpoint.ipv4_nets | endpoint.ipv6_nets:
assert(net.size == 1)
ip = net.ip
pools = client.get_ip_pools(ip.version)
for pool in pools:
if ip in pool:
# Ignore failure to unassign address, since we're not
# enforcing assignments strictly in datastore.py.
client.unassign_address(pool, ip)
try:
# Remove the interface if it exists
netns.remove_veth(endpoint.name)
except CalledProcessError:
print "Could not remove Calico interface %s" % endpoint.name
sys.exit(1)
# Remove the container from the datastore.
client.remove_workload(hostname, orchestrator_id, workload_id)
print "Removed Calico interface from %s" % container_id
def container_remove(container_id):
"""
Remove a container (on this host) from Calico networking.
The container may be left in a state without any working networking.
If there is a network adaptor in the host namespace used by the container
then it is removed.
:param container_id: The namespace path or the ID of the container.
"""
# The netns manipulations must be done as root.
enforce_root()
# Resolve the name to ID.
if container_id.startswith("/") and os.path.exists(container_id):
# The ID is a path. Don't do any docker lookups
workload_id = escape_etcd(container_id)
orchestrator_id = NAMESPACE_ORCHESTRATOR_ID
else:
workload_id = get_workload_id(container_id)
orchestrator_id = DOCKER_ORCHESTRATOR_ID
# Find the endpoint ID. We need this to find any ACL rules
try:
endpoint = client.get_endpoint(hostname=hostname,
orchestrator_id=orchestrator_id,
workload_id=workload_id)
except KeyError:
print "Container %s doesn't contain any endpoints" % container_id
sys.exit(1)
# Remove any IP address assignments that this endpoint has
for net in endpoint.ipv4_nets | endpoint.ipv6_nets:
assert (net.size == 1)
ip = net.ip
pools = client.get_ip_pools(ip.version)
for pool in pools:
if ip in pool:
# Ignore failure to unassign address, since we're not
# enforcing assignments strictly in datastore.py.
client.unassign_address(pool, ip)
try:
# Remove the interface if it exists
netns.remove_veth(endpoint.name)
except CalledProcessError:
print "Could not remove Calico interface %s" % endpoint.name
sys.exit(1)
# Remove the container from the datastore.
client.remove_workload(hostname, orchestrator_id, workload_id)
print "Removed Calico interface from %s" % container_id
def container_endpoint_id_show(container_name):
"""
Prints the endpoint-id of the endpoint attached to the specified
container, or an appropriate Not-found error message.
:param container_name: Name of the container the target endpoint
is attached to.
:return: None
"""
workload_id = get_container_id(container_name)
try:
endpoint = client.get_endpoint(hostname=hostname, orchestrator_id=ORCHESTRATOR_ID, workload_id=workload_id)
print endpoint.endpoint_id
except KeyError:
print "No endpoint was found for %s" % container_name
def container_endpoint_id_show(container_name):
"""
Prints the endpoint-id of the endpoint attached to the specified
container, or an appropriate Not-found error message.
:param container_name: Name of the container the target endpoint
is attached to.
:return: None
"""
workload_id = get_container_id(container_name)
try:
endpoint = client.get_endpoint(hostname=hostname,
orchestrator_id=ORCHESTRATOR_ID,
workload_id=workload_id)
print endpoint.endpoint_id
except KeyError:
print "No endpoint was found for %s" % container_name
def container_remove(container_name):
"""
Remove a container (on this host) from Calico networking.
The container may be left in a state without any working networking.
If there is a network adaptor in the host namespace used by the container
then it is removed.
:param container_name: The name or ID of the container.
"""
# The netns manipulations must be done as root.
enforce_root()
# Resolve the name to ID.
workload_id = get_container_id(container_name)
# Find the endpoint ID. We need this to find any ACL rules
try:
endpoint = client.get_endpoint(hostname=hostname,
orchestrator_id=ORCHESTRATOR_ID,
workload_id=workload_id)
except KeyError:
print "Container %s doesn't contain any endpoints" % container_name
sys.exit(1)
# Remove any IP address assignments that this endpoint has
for net in endpoint.ipv4_nets | endpoint.ipv6_nets:
assert(net.size == 1)
ip = net.ip
pools = client.get_ip_pools(ip.version)
for pool in pools:
if ip in pool:
# Ignore failure to unassign address, since we're not
# enforcing assignments strictly in datastore.py.
client.unassign_address(pool, ip)
# Remove the endpoint
netns.remove_veth(endpoint.name)
# Remove the container from the datastore.
client.remove_workload(hostname, ORCHESTRATOR_ID, workload_id)
print "Removed Calico interface from %s" % container_name
def container_remove(container_name):
"""
Remove a container (on this host) from Calico networking.
The container may be left in a state without any working networking.
If there is a network adaptor in the host namespace used by the container
then it is removed.
:param container_name: The name or ID of the container.
"""
# The netns manipulations must be done as root.
enforce_root()
# Resolve the name to ID.
workload_id = get_container_id(container_name)
# Find the endpoint ID. We need this to find any ACL rules
try:
endpoint = client.get_endpoint(hostname=hostname, orchestrator_id=ORCHESTRATOR_ID, workload_id=workload_id)
except KeyError:
print "Container %s doesn't contain any endpoints" % container_name
sys.exit(1)
# Remove any IP address assignments that this endpoint has
for net in endpoint.ipv4_nets | endpoint.ipv6_nets:
assert net.size == 1
ip = net.ip
pools = client.get_ip_pools(ip.version)
for pool in pools:
if ip in pool:
# Ignore failure to unassign address, since we're not
# enforcing assignments strictly in datastore.py.
client.unassign_address(pool, ip)
# Remove the endpoint
netns.remove_veth(endpoint.name)
# Remove the container from the datastore.
client.remove_workload(hostname, ORCHESTRATOR_ID, workload_id)
print "Removed Calico interface from %s" % container_name
def container_ip_remove(container_id, ip, interface):
"""
Add an IP address to an existing Calico networked container.
:param container_id: The namespace path or container_id of the container.
:param ip: The IP to add
:param interface: The name of the interface in the container.
:return: None
"""
address = IPAddress(ip)
# The netns manipulations must be done as root.
enforce_root()
pool = get_pool_or_exit(address)
if container_id.startswith("/") and os.path.exists(container_id):
# The ID is a path. Don't do any docker lookups
workload_id = escape_etcd(container_id)
namespace = netns.Namespace(container_id)
orchestrator_id = NAMESPACE_ORCHESTRATOR_ID
else:
info = get_container_info_or_exit(container_id)
workload_id = info["Id"]
namespace = netns.PidNamespace(info["State"]["Pid"])
orchestrator_id = DOCKER_ORCHESTRATOR_ID
# Check the container is actually running.
if not info["State"]["Running"]:
print "%s is not currently running." % container_id
sys.exit(1)
# Check that the container is already networked
try:
endpoint = client.get_endpoint(hostname=hostname,
orchestrator_id=orchestrator_id,
workload_id=workload_id)
if address.version == 4:
nets = endpoint.ipv4_nets
else:
nets = endpoint.ipv6_nets
if not IPNetwork(address) in nets:
print "IP address is not assigned to container. Aborting."
sys.exit(1)
except KeyError:
print "Container is unknown to Calico."
sys.exit(1)
try:
nets.remove(IPNetwork(address))
client.update_endpoint(endpoint)
except (KeyError, ValueError):
print "Error updating datastore. Aborting."
sys.exit(1)
try:
netns.remove_ip_from_ns_veth(namespace, address, interface)
except CalledProcessError:
print "Error updating networking in container. Aborting."
sys.exit(1)
client.release_ips({address})
print "IP %s removed from %s" % (ip, container_id)
def container_ip_add(container_id, ip, interface):
"""
Add an IP address to an existing Calico networked container.
:param container_id: The namespace path or container_id of the container.
:param ip: The IP to add
:param interface: The name of the interface in the container.
:return: None
"""
# The netns manipulations must be done as root.
enforce_root()
if container_id.startswith("/") and os.path.exists(container_id):
# The ID is a path. Don't do any docker lookups
workload_id = escape_etcd(container_id)
namespace = netns.Namespace(container_id)
orchestrator_id = NAMESPACE_ORCHESTRATOR_ID
else:
info = get_container_info_or_exit(container_id)
workload_id = info["Id"]
namespace = netns.PidNamespace(info["State"]["Pid"])
orchestrator_id = DOCKER_ORCHESTRATOR_ID
# Check the container is actually running.
if not info["State"]["Running"]:
print "%s is not currently running." % container_id
sys.exit(1)
# Check that the container is already networked
try:
endpoint = client.get_endpoint(hostname=hostname,
orchestrator_id=orchestrator_id,
workload_id=workload_id)
except KeyError:
print "Failed to add IP address to container.\n"
print_container_not_in_calico_msg(container_id)
sys.exit(1)
# From here, this method starts having side effects. If something
# fails then at least try to leave the system in a clean state.
address, pool = get_ip_and_pool(ip)
try:
if address.version == 4:
endpoint.ipv4_nets.add(IPNetwork(address))
else:
endpoint.ipv6_nets.add(IPNetwork(address))
client.update_endpoint(endpoint)
except (KeyError, ValueError):
client.release_ips({address})
print "Error updating datastore. Aborting."
sys.exit(1)
if not netns.ns_veth_exists(namespace, interface):
print "Interface provided does not exist in container. Aborting."
sys.exit(1)
try:
netns.add_ip_to_ns_veth(namespace, address, interface)
except CalledProcessError:
print "Error updating networking in container. Aborting."
if address.version == 4:
endpoint.ipv4_nets.remove(IPNetwork(address))
else:
endpoint.ipv6_nets.remove(IPNetwork(address))
client.update_endpoint(endpoint)
client.release_ips({address})
sys.exit(1)
print "IP %s added to %s" % (str(address), container_id)
def container_add(container_id, ip, interface):
"""
Add a container (on this host) to Calico networking with the given IP.
:param container_id: The namespace path or the docker name/ID of the container.
:param ip: An IPAddress object with the desired IP to assign.
:param interface: The name of the interface in the container.
"""
# The netns manipulations must be done as root.
enforce_root()
# TODO: This section is redundant in container_add_ip and elsewhere
if container_id.startswith("/") and os.path.exists(container_id):
# The ID is a path. Don't do any docker lookups
workload_id = escape_etcd(container_id)
orchestrator_id = NAMESPACE_ORCHESTRATOR_ID
namespace = netns.Namespace(container_id)
else:
info = get_container_info_or_exit(container_id)
workload_id = info["Id"]
orchestrator_id = DOCKER_ORCHESTRATOR_ID
namespace = netns.PidNamespace(info["State"]["Pid"])
# Check the container is actually running.
if not info["State"]["Running"]:
print_paragraph("%s is not currently running." % container_id)
sys.exit(1)
# We can't set up Calico if the container shares the host namespace.
if info["HostConfig"]["NetworkMode"] == "host":
print_paragraph("Can't add %s to Calico because it is "
"running NetworkMode = host." % container_id)
sys.exit(1)
# Check if the container already exists
try:
_ = client.get_endpoint(hostname=hostname,
orchestrator_id=orchestrator_id,
workload_id=workload_id)
except KeyError:
# Calico doesn't know about this container. Continue.
pass
else:
# Calico already set up networking for this container. Since we got
# called with an IP address, we shouldn't just silently exit, since
# that would confuse the user: the container would not be reachable on
# that IP address.
print_paragraph("%s has already been configured with Calico "
"Networking." % container_id)
sys.exit(1)
ip, pool = get_ip_and_pool(ip)
try:
# The next hop IPs for this host are stored in etcd.
next_hops = client.get_default_next_hops(hostname)
next_hops[ip.version]
except KeyError:
print_paragraph("This node is not configured for IPv%d. "
"Is calico-node running?" % ip.version)
unallocated_ips = client.release_ips({ip})
if unallocated_ips:
print_paragraph("Error during cleanup. %s was already"
"unallocated." % ip)
sys.exit(1)
# Get the next hop for the IP address.
next_hop = next_hops[ip.version]
network = IPNetwork(IPAddress(ip))
ep = Endpoint(hostname=hostname,
orchestrator_id=DOCKER_ORCHESTRATOR_ID,
workload_id=workload_id,
endpoint_id=uuid.uuid1().hex,
state="active",
mac=None)
if network.version == 4:
ep.ipv4_nets.add(network)
ep.ipv4_gateway = next_hop
else:
ep.ipv6_nets.add(network)
ep.ipv6_gateway = next_hop
# Create the veth, move into the container namespace, add the IP and
# set up the default routes.
netns.increment_metrics(namespace)
netns.create_veth(ep.name, ep.temp_interface_name)
netns.move_veth_into_ns(namespace, ep.temp_interface_name, interface)
netns.add_ip_to_ns_veth(namespace, ip, interface)
netns.add_ns_default_route(namespace, next_hop, interface)
# Grab the MAC assigned to the veth in the namespace.
ep.mac = netns.get_ns_veth_mac(namespace, interface)
# Register the endpoint with Felix.
client.set_endpoint(ep)
# Let the caller know what endpoint was created.
print_paragraph("IP %s added to %s" % (str(ip), container_id))
return ep
def container_ip_remove(container_id, ip, interface):
"""
Add an IP address to an existing Calico networked container.
:param container_id: The namespace path or container_id of the container.
:param ip: The IP to add
:param interface: The name of the interface in the container.
:return: None
"""
address = IPAddress(ip)
# The netns manipulations must be done as root.
enforce_root()
pool = get_pool_or_exit(address)
if container_id.startswith("/") and os.path.exists(container_id):
# The ID is a path. Don't do any docker lookups
workload_id = escape_etcd(container_id)
namespace = netns.Namespace(container_id)
orchestrator_id = NAMESPACE_ORCHESTRATOR_ID
else:
info = get_container_info_or_exit(container_id)
workload_id = info["Id"]
namespace = netns.PidNamespace(info["State"]["Pid"])
orchestrator_id = DOCKER_ORCHESTRATOR_ID
# Check the container is actually running.
if not info["State"]["Running"]:
print "%s is not currently running." % container_id
sys.exit(1)
# Check that the container is already networked
try:
endpoint = client.get_endpoint(hostname=hostname,
orchestrator_id=orchestrator_id,
workload_id=workload_id)
if address.version == 4:
nets = endpoint.ipv4_nets
else:
nets = endpoint.ipv6_nets
if not IPNetwork(address) in nets:
print "IP address is not assigned to container. Aborting."
sys.exit(1)
except KeyError:
print "Container is unknown to Calico."
sys.exit(1)
try:
nets.remove(IPNetwork(address))
client.update_endpoint(endpoint)
except (KeyError, ValueError):
print "Error updating datastore. Aborting."
sys.exit(1)
try:
netns.remove_ip_from_ns_veth(namespace, address, interface)
except CalledProcessError:
print "Error updating networking in container. Aborting."
sys.exit(1)
client.unassign_address(pool, address)
print "IP %s removed from %s" % (ip, container_id)
def container_ip_add(container_id, ip, interface):
"""
Add an IP address to an existing Calico networked container.
:param container_id: The namespace path or container_id of the container.
:param ip: The IP to add
:param interface: The name of the interface in the container.
:return: None
"""
address = IPAddress(ip)
# The netns manipulations must be done as root.
enforce_root()
pool = get_pool_or_exit(address)
if container_id.startswith("/") and os.path.exists(container_id):
# The ID is a path. Don't do any docker lookups
workload_id = escape_etcd(container_id)
namespace = netns.Namespace(container_id)
orchestrator_id = NAMESPACE_ORCHESTRATOR_ID
else:
info = get_container_info_or_exit(container_id)
workload_id = info["Id"]
namespace = netns.PidNamespace(info["State"]["Pid"])
orchestrator_id = DOCKER_ORCHESTRATOR_ID
# Check the container is actually running.
if not info["State"]["Running"]:
print "%s is not currently running." % container_id
sys.exit(1)
# Check that the container is already networked
try:
endpoint = client.get_endpoint(hostname=hostname,
orchestrator_id=orchestrator_id,
workload_id=workload_id)
except KeyError:
print "Failed to add IP address to container.\n"
print_container_not_in_calico_msg(container_id)
sys.exit(1)
# From here, this method starts having side effects. If something
# fails then at least try to leave the system in a clean state.
if not client.assign_address(pool, address):
print "IP address is already assigned in pool %s " % pool
sys.exit(1)
try:
if address.version == 4:
endpoint.ipv4_nets.add(IPNetwork(address))
else:
endpoint.ipv6_nets.add(IPNetwork(address))
client.update_endpoint(endpoint)
except (KeyError, ValueError):
client.unassign_address(pool, ip)
print "Error updating datastore. Aborting."
sys.exit(1)
try:
netns.add_ip_to_ns_veth(namespace, address, interface)
except CalledProcessError:
print "Error updating networking in container. Aborting."
if address.version == 4:
endpoint.ipv4_nets.remove(IPNetwork(address))
else:
endpoint.ipv6_nets.remove(IPNetwork(address))
client.update_endpoint(endpoint)
client.unassign_address(pool, ip)
sys.exit(1)
print "IP %s added to %s" % (ip, container_id)
def container_add(container_id, ip, interface):
"""
Add a container (on this host) to Calico networking with the given IP.
:param container_id: The namespace path or the docker name/ID of the container.
:param ip: An IPAddress object with the desired IP to assign.
:param interface: The name of the interface in the container.
"""
# The netns manipulations must be done as root.
enforce_root()
if container_id.startswith("/") and os.path.exists(container_id):
# The ID is a path. Don't do any docker lookups
workload_id = escape_etcd(container_id)
orchestrator_id = NAMESPACE_ORCHESTRATOR_ID
namespace = netns.Namespace(container_id)
else:
info = get_container_info_or_exit(container_id)
workload_id = info["Id"]
orchestrator_id = DOCKER_ORCHESTRATOR_ID
namespace = netns.PidNamespace(info["State"]["Pid"])
# Check the container is actually running.
if not info["State"]["Running"]:
print "%s is not currently running." % container_id
sys.exit(1)
# We can't set up Calico if the container shares the host namespace.
if info["HostConfig"]["NetworkMode"] == "host":
print "Can't add %s to Calico because it is " \
"running NetworkMode = host." % container_id
sys.exit(1)
# Check if the container already exists
try:
_ = client.get_endpoint(hostname=hostname,
orchestrator_id=orchestrator_id,
workload_id=workload_id)
except KeyError:
# Calico doesn't know about this container. Continue.
pass
else:
# Calico already set up networking for this container. Since we got
# called with an IP address, we shouldn't just silently exit, since
# that would confuse the user: the container would not be reachable on
# that IP address.
print "%s has already been configured with Calico Networking." % \
container_id
sys.exit(1)
# Check the IP is in the allocation pool. If it isn't, BIRD won't export
# it.
ip = IPAddress(ip)
pool = get_pool_or_exit(ip)
# The next hop IPs for this host are stored in etcd.
next_hops = client.get_default_next_hops(hostname)
try:
next_hops[ip.version]
except KeyError:
print "This node is not configured for IPv%d." % ip.version
sys.exit(1)
# Assign the IP
if not client.assign_address(pool, ip):
print "IP address is already assigned in pool %s " % pool
sys.exit(1)
# Get the next hop for the IP address.
next_hop = next_hops[ip.version]
network = IPNetwork(IPAddress(ip))
ep = Endpoint(hostname=hostname,
orchestrator_id=DOCKER_ORCHESTRATOR_ID,
workload_id=workload_id,
endpoint_id=uuid.uuid1().hex,
state="active",
mac=None)
if network.version == 4:
ep.ipv4_nets.add(network)
ep.ipv4_gateway = next_hop
else:
ep.ipv6_nets.add(network)
ep.ipv6_gateway = next_hop
# Create the veth, move into the container namespace, add the IP and
# set up the default routes.
netns.create_veth(ep.name, ep.temp_interface_name)
netns.move_veth_into_ns(namespace, ep.temp_interface_name, interface)
netns.add_ip_to_ns_veth(namespace, ip, interface)
netns.add_ns_default_route(namespace, next_hop, interface)
# Grab the MAC assigned to the veth in the namespace.
ep.mac = netns.get_ns_veth_mac(namespace, interface)
# Register the endpoint with Felix.
client.set_endpoint(ep)
# Let the caller know what endpoint was created.
return ep
def container_ip_add(container_name, ip, interface):
"""
Add an IP address to an existing Calico networked container.
:param container_name: The name of the container.
:param ip: The IP to add
:param interface: The name of the interface in the container.
:return: None
"""
address = IPAddress(ip)
# The netns manipulations must be done as root.
enforce_root()
pool = get_pool_or_exit(address)
info = get_container_info_or_exit(container_name)
container_id = info["Id"]
# Check the container is actually running.
if not info["State"]["Running"]:
print "%s is not currently running." % container_name
sys.exit(1)
# Check that the container is already networked
try:
endpoint = client.get_endpoint(hostname=hostname,
orchestrator_id=ORCHESTRATOR_ID,
workload_id=container_id)
except KeyError:
print "Failed to add IP address to container.\n"
print_container_not_in_calico_msg(container_name)
sys.exit(1)
# From here, this method starts having side effects. If something
# fails then at least try to leave the system in a clean state.
if not client.assign_address(pool, address):
print "IP address is already assigned in pool %s " % pool
sys.exit(1)
try:
if address.version == 4:
endpoint.ipv4_nets.add(IPNetwork(address))
else:
endpoint.ipv6_nets.add(IPNetwork(address))
client.update_endpoint(endpoint)
except (KeyError, ValueError):
client.unassign_address(pool, ip)
print "Error updating datastore. Aborting."
sys.exit(1)
try:
container_pid = info["State"]["Pid"]
netns.add_ip_to_ns_veth(container_pid, address, interface)
except CalledProcessError:
print "Error updating networking in container. Aborting."
if address.version == 4:
endpoint.ipv4_nets.remove(IPNetwork(address))
else:
endpoint.ipv6_nets.remove(IPNetwork(address))
client.update_endpoint(endpoint)
client.unassign_address(pool, ip)
sys.exit(1)
print "IP %s added to %s" % (ip, container_id)
def container_ip_remove(container_name, ip, interface):
"""
Add an IP address to an existing Calico networked container.
:param container_name: The name of the container.
:param ip: The IP to add
:param interface: The name of the interface in the container.
:return: None
"""
address = IPAddress(ip)
# The netns manipulations must be done as root.
enforce_root()
pool = get_pool_or_exit(address)
info = get_container_info_or_exit(container_name)
container_id = info["Id"]
# Check the container is actually running.
if not info["State"]["Running"]:
print "%s is not currently running." % container_name
sys.exit(1)
# Check that the container is already networked
try:
endpoint = client.get_endpoint(hostname=hostname,
orchestrator_id=ORCHESTRATOR_ID,
workload_id=container_id)
if address.version == 4:
nets = endpoint.ipv4_nets
else:
nets = endpoint.ipv6_nets
if not IPNetwork(address) in nets:
print "IP address is not assigned to container. Aborting."
sys.exit(1)
except KeyError:
print "Container is unknown to Calico."
sys.exit(1)
try:
nets.remove(IPNetwork(address))
client.update_endpoint(endpoint)
except (KeyError, ValueError):
print "Error updating datastore. Aborting."
sys.exit(1)
try:
container_pid = info["State"]["Pid"]
netns.remove_ip_from_ns_veth(container_pid, address, interface)
except CalledProcessError:
print "Error updating networking in container. Aborting."
sys.exit(1)
client.unassign_address(pool, ip)
print "IP %s removed from %s" % (ip, container_name)
def container_add(container_name, ip, interface):
"""
Add a container (on this host) to Calico networking with the given IP.
:param container_name: The name or ID of the container.
:param ip: An IPAddress object with the desired IP to assign.
:param interface: The name of the interface in the container.
"""
# The netns manipulations must be done as root.
enforce_root()
info = get_container_info_or_exit(container_name)
container_id = info["Id"]
# Check if the container already exists
try:
_ = client.get_endpoint(hostname=hostname,
orchestrator_id=ORCHESTRATOR_ID,
workload_id=container_id)
except KeyError:
# Calico doesn't know about this container. Continue.
pass
else:
# Calico already set up networking for this container. Since we got
# called with an IP address, we shouldn't just silently exit, since
# that would confuse the user: the container would not be reachable on
# that IP address.
print "%s has already been configured with Calico Networking." % \
container_name
sys.exit(1)
# Check the container is actually running.
if not info["State"]["Running"]:
print "%s is not currently running." % container_name
sys.exit(1)
# We can't set up Calico if the container shares the host namespace.
if info["HostConfig"]["NetworkMode"] == "host":
print "Can't add %s to Calico because it is " \
"running NetworkMode = host." % container_name
sys.exit(1)
# Check the IP is in the allocation pool. If it isn't, BIRD won't export
# it.
ip = IPAddress(ip)
pool = get_pool_or_exit(ip)
# The next hop IPs for this host are stored in etcd.
next_hops = client.get_default_next_hops(hostname)
try:
next_hops[ip.version]
except KeyError:
print "This node is not configured for IPv%d." % ip.version
sys.exit(1)
# Assign the IP
if not client.assign_address(pool, ip):
print "IP address is already assigned in pool %s " % pool
sys.exit(1)
# Get the next hop for the IP address.
next_hop = next_hops[ip.version]
network = IPNetwork(IPAddress(ip))
ep = Endpoint(hostname=hostname,
orchestrator_id=ORCHESTRATOR_ID,
workload_id=container_id,
endpoint_id=uuid.uuid1().hex,
state="active",
mac=None)
if network.version == 4:
ep.ipv4_nets.add(network)
ep.ipv4_gateway = next_hop
else:
ep.ipv6_nets.add(network)
ep.ipv6_gateway = next_hop
# Create the veth, move into the container namespace, add the IP and
# set up the default routes.
pid = info["State"]["Pid"]
netns.create_veth(ep.name, ep.temp_interface_name)
netns.move_veth_into_ns(pid, ep.temp_interface_name, interface)
netns.add_ip_to_ns_veth(pid, ip, interface)
netns.add_ns_default_route(pid, next_hop, interface)
# Grab the MAC assigned to the veth in the namespace.
ep.mac = netns.get_ns_veth_mac(pid, interface)
# Register the endpoint with Felix.
client.set_endpoint(ep)
# Let the caller know what endpoint was created.
return ep
def container_add(container_id, ip, interface):
"""
Add a container (on this host) to Calico networking with the given IP.
:param container_id: The namespace path or the docker name/ID of the container.
:param ip: An IPAddress object with the desired IP to assign.
:param interface: The name of the interface in the container.
"""
# The netns manipulations must be done as root.
enforce_root()
# TODO: This section is redundant in container_add_ip and elsewhere
if container_id.startswith("/") and os.path.exists(container_id):
# The ID is a path. Don't do any docker lookups
workload_id = escape_etcd(container_id)
orchestrator_id = NAMESPACE_ORCHESTRATOR_ID
namespace = netns.Namespace(container_id)
else:
info = get_container_info_or_exit(container_id)
workload_id = info["Id"]
orchestrator_id = DOCKER_ORCHESTRATOR_ID
namespace = netns.PidNamespace(info["State"]["Pid"])
# Check the container is actually running.
if not info["State"]["Running"]:
print_paragraph("%s is not currently running." % container_id)
sys.exit(1)
# We can't set up Calico if the container shares the host namespace.
if info["HostConfig"]["NetworkMode"] == "host":
print_paragraph("Can't add %s to Calico because it is "
"running NetworkMode = host." % container_id)
sys.exit(1)
# Check if the container already exists
try:
_ = client.get_endpoint(hostname=hostname,
orchestrator_id=orchestrator_id,
workload_id=workload_id)
except KeyError:
# Calico doesn't know about this container. Continue.
pass
else:
# Calico already set up networking for this container. Since we got
# called with an IP address, we shouldn't just silently exit, since
# that would confuse the user: the container would not be reachable on
# that IP address.
print_paragraph("%s has already been configured with Calico "
"Networking." % container_id)
sys.exit(1)
ep = Endpoint(hostname=hostname,
orchestrator_id=DOCKER_ORCHESTRATOR_ID,
workload_id=workload_id,
endpoint_id=uuid.uuid1().hex,
state="active",
mac=None)
ip, _ = get_ip_and_pool(ip)
network = IPNetwork(ip)
if network.version == 4:
ep.ipv4_nets.add(network)
else:
ep.ipv6_nets.add(network)
# Create the veth, move into the container namespace, add the IP and
# set up the default routes.
netns.increment_metrics(namespace)
netns.create_veth(ep.name, ep.temp_interface_name)
netns.move_veth_into_ns(namespace, ep.temp_interface_name, interface)
netns.add_ip_to_ns_veth(namespace, ip, interface)
netns.add_ns_default_route(namespace, ep.name, interface)
# Grab the MAC assigned to the veth in the namespace.
ep.mac = netns.get_ns_veth_mac(namespace, interface)
# Register the endpoint with Felix.
client.set_endpoint(ep)
# Let the caller know what endpoint was created.
print_paragraph("IP %s added to %s" % (str(ip), container_id))
return ep
