initial lxd based node working from simple scripts

daemon/examples/lxd/README.md

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+# LXD Support
+
+Information on how LXD can be leveraged and included to create
+nodes based on LXC containers and images to interface with
+existing CORE nodes, when needed.
+
+# Installation
+
+```shell
+sudo snap install lxd
+```
+
+# Configuration
+
+Initialize LXD and say no to adding a default bridge.
+
+```shell
+sudo lxd init
+```
+
+# Tools and Versions Tested With
+
+* LXD 3.14
+* nsenter from util-linux 2.31.1
+
+# Examples
+
+This directory provides a few small examples creating LXC nodes
+using LXD and linking them to themselves or with standard CORE nodes.

daemon/examples/lxd/lxd2core.py

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+import logging
+
+from core.emulator.coreemu import CoreEmu
+from core.emulator.emudata import IpPrefixes, NodeOptions
+from core.emulator.enumerations import NodeTypes, EventTypes
+
+
+if __name__ == "__main__":
+    logging.basicConfig(level=logging.DEBUG)
+    coreemu = CoreEmu()
+    session = coreemu.create_session()
+    session.set_state(EventTypes.CONFIGURATION_STATE)
+
+    try:
+        prefixes = IpPrefixes(ip4_prefix="10.83.0.0/16")
+        options = NodeOptions(image="ubuntu")
+        options.services = ["SSH"]
+
+        # create node one
+        node_one = session.add_node(_type=NodeTypes.LXC, node_options=options)
+        interface_one = prefixes.create_interface(node_one)
+
+        # create node two
+        node_two = session.add_node()
+        interface_two = prefixes.create_interface(node_two)
+
+        # add link
+        session.add_link(node_one.id, node_two.id, interface_one, interface_two)
+
+        # instantiate
+        session.instantiate()
+    finally:
+        input("continue to shutdown")
+        coreemu.shutdown()

daemon/examples/lxd/lxd2lxd.py

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+import logging
+
+from core.emulator.coreemu import CoreEmu
+from core.emulator.emudata import IpPrefixes, NodeOptions
+from core.emulator.enumerations import NodeTypes, EventTypes
+
+
+if __name__ == "__main__":
+    logging.basicConfig(level=logging.DEBUG)
+
+    coreemu = CoreEmu()
+    session = coreemu.create_session()
+    session.set_state(EventTypes.CONFIGURATION_STATE)
+
+    # create nodes and interfaces
+    try:
+        prefixes = IpPrefixes(ip4_prefix="10.83.0.0/16")
+        options = NodeOptions(image="ubuntu")
+
+        # create node one
+        node_one = session.add_node(_type=NodeTypes.LXC, node_options=options)
+        interface_one = prefixes.create_interface(node_one)
+
+        # create node two
+        node_two = session.add_node(_type=NodeTypes.LXC, node_options=options)
+        interface_two = prefixes.create_interface(node_two)
+
+        # add link
+        session.add_link(node_one.id, node_two.id, interface_one, interface_two)
+
+        # instantiate
+        session.instantiate()
+    finally:
+        input("continue to shutdown")
+        coreemu.shutdown()

daemon/examples/lxd/switch.py

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+import logging
+
+from core.emulator.coreemu import CoreEmu
+from core.emulator.emudata import IpPrefixes, NodeOptions
+from core.emulator.enumerations import NodeTypes, EventTypes
+
+
+if __name__ == "__main__":
+    logging.basicConfig(level=logging.DEBUG)
+
+    coreemu = CoreEmu()
+    session = coreemu.create_session()
+    session.set_state(EventTypes.CONFIGURATION_STATE)
+
+    try:
+        prefixes = IpPrefixes(ip4_prefix="10.83.0.0/16")
+        options = NodeOptions(image="ubuntu")
+
+        # create switch
+        switch = session.add_node(_type=NodeTypes.SWITCH)
+
+        # node one
+        node_one = session.add_node(_type=NodeTypes.LXC, node_options=options)
+        interface_one = prefixes.create_interface(node_one)
+
+        # node two
+        node_two = session.add_node(_type=NodeTypes.LXC, node_options=options)
+        interface_two = prefixes.create_interface(node_two)
+
+        # node three
+        node_three = session.add_node()
+        interface_three = prefixes.create_interface(node_three)
+
+        # add links
+        session.add_link(node_one.id, switch.id, interface_one)
+        session.add_link(node_two.id, switch.id, interface_two)
+        session.add_link(node_three.id, switch.id, interface_three)
+
+        # instantiate
+        session.instantiate()
+    finally:
+        input("continue to shutdown")
+        coreemu.shutdown()