Kathará v3.7.4

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -22,7 +22,7 @@ body:
     attributes:
       label: Kathará Version
       description: "Please provide the Kathará version you are using (`kathara -v`)."
-      placeholder: "3.7.3"
+      placeholder: "3.7.4"
     validations:
       required: true
   - type: textarea

SECURITY.md

@@ -6,7 +6,7 @@ We release patches for security vulnerabilities only for the last version:
 
 | Version | Supported Versions |
 |---------|--------------------|
-| 3.7.3   | :white_check_mark: |
+| 3.7.4   | :white_check_mark: |
 
 ## Reporting a Vulnerability
 

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "kathara"
-version = "3.7.3"
+version = "3.7.4"
 description = "A lightweight container-based network emulation tool."
 readme = "README.md"
 requires-python = ">=3.9"

scripts/Linux-Deb/Makefile

@@ -1,6 +1,6 @@
 #!/usr/bin/make -f
 
-VERSION=3.7.3
+VERSION=3.7.4
 DEBIAN_PACKAGE_VERSION=1
 LAUNCHPAD_NAME=user
 NO_BINARY_PACKAGES=pyroute2|pyuv|deepdiff

scripts/Linux-Deb/debian/changelog

@@ -1,9 +1,7 @@
 kathara (__VERSION__-__DEBIAN_PACKAGE_VERSION____UBUNTU_VERSION__) __UBUNTU_VERSION__; urgency=low
 
-    * New CLI UI using "rich" library!
-    * (Docker) Show progress during Docker image pull, similarly to the official "docker pull" command
-    * (Docker) It is now correctly possible to specify a "linux/amd64" image on Apple Silicon (which can be run using Rosetta)
-    * Add "gnome-terminal" as official supported terminal emulator
-    * Several API improvements and bug fixes
+    * (Docker) Fix "rp_filter" on "eth0" that was causing startup errors on some distributions
+    * (Megalos) Fix watch methods while starting/stopping devices that were causing "lstart"/"lclean" to hang indefinitely
+    * Minor fixes
 
  -- Kathara Team <contact@kathara.org>  __DATE__

scripts/Linux-Pkg/Makefile

@@ -1,6 +1,6 @@
 #!/usr/bin/make -f
 
-VERSION=3.7.3
+VERSION=3.7.4
 PACKAGE_VERSION=1
 AUR_NAME=user
 AUR_MAIL=contact@kathara.org

scripts/Linux-Pkg/pkginfo/kathara.changelog

@@ -1,8 +1,6 @@
 __DATE__ Kathara Team <******@kathara.org>
 
 * Release v__VERSION__
-    * New CLI UI using "rich" library!
-    * (Docker) Show progress during Docker image pull, similarly to the official "docker pull" command
-    * (Docker) It is now correctly possible to specify a "linux/amd64" image on Apple Silicon (which can be run using Rosetta)
-    * Add "gnome-terminal" as official supported terminal emulator
-    * Several API improvements and bug fixes
+    * (Docker) Fix "rp_filter" on "eth0" that was causing startup errors on some distributions
+    * (Megalos) Fix watch methods while starting/stopping devices that were causing "lstart"/"lclean" to hang indefinitely
+    * Minor fixes

scripts/Linux-Rpm/Makefile

@@ -1,6 +1,6 @@
 #!/usr/bin/make -f
 
-VERSION=3.7.3
+VERSION=3.7.4
 PACKAGE_VERSION=1
 
 .PHONY: all clean docker-build-image prepare-source prepare-man-pages prepare-bash-completion pack-source build

scripts/Linux-Rpm/rpm/kathara.spec

@@ -68,8 +68,6 @@ chmod g+s %{_libdir}/kathara/kathara
 
 %changelog
 *  __DATE__ Kathara Team <******@kathara.org> - __VERSION__-__PACKAGE_VERSION__
-- New CLI UI using "rich" library!
-- (Docker) Show progress during Docker image pull, similarly to the official "docker pull" command
-- (Docker) It is now correctly possible to specify a "linux/amd64" image on Apple Silicon (which can be run using Rosetta)
-- Add "gnome-terminal" as official supported terminal emulator
-- Several API improvements and bug fixes
+- (Docker) Fix "rp_filter" on "eth0" that was causing startup errors on some distributions
+- (Megalos) Fix watch methods while starting/stopping devices that were causing "lstart"/"lclean" to hang indefinitely
+- Minor fixes

scripts/OSX/Makefile

@@ -1,7 +1,7 @@
 #!/usr/bin/make -s
 
 PRODUCT=Kathara
-VERSION=3.7.3
+VERSION=3.7.4
 TARGET_DIRECTORY=Output
 APPLE_DEVELOPER_CERTIFICATE_ID=FakeID
 ROFF_DIR=../../docs/Roff

scripts/Windows/installer.iss

@@ -2,7 +2,7 @@
 ; SEE THE DOCUMENTATION FOR DETAILS ON CREATING INNO SETUP SCRIPT FILES!
 
 #define MyAppName "Kathara"
-#define MyAppVersion "3.7.3"
+#define MyAppVersion "3.7.4"
 #define MyAppPublisher "Kathara Team"
 #define MyAppURL "https://www.kathara.org"
 #define MyAppExeName "kathara.exe"

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = kathara
-version = 3.7.3
+version = 3.7.4
 author = Kathara Framework
 author_email = contact@kathara.org
 description = A lightweight container-based network emulation tool.

setup.py

@@ -7,13 +7,13 @@
     package_dir={'': 'src'},
     packages=find_packages('src'),
     py_modules=['kathara'],
-    version='3.7.3',
+    version='3.7.4',
     license='gpl-3.0',
     description='A lightweight container-based network emulation tool.',
     author='Kathara Framework',
     author_email='contact@kathara.org',
     url='https://www.kathara.org',
-    download_url='https://github.com/KatharaFramework/Kathara/archive/refs/tags/3.7.3.tar.gz',
+    download_url='https://github.com/KatharaFramework/Kathara/archive/refs/tags/3.7.4.tar.gz',
     keywords=['NETWORK-EMULATION', 'CONTAINERS', 'NFV'],
     install_requires=[
         "binaryornot>=0.4.4",

src/Kathara/exceptions.py

@@ -28,7 +28,7 @@ def __init__(self, path: str) -> None:
 
 class DockerDaemonConnectionError(Exception):
     def __init__(self, message: str) -> None:
-        super().__init__(f"Cannot connect to Docker Daemon: {message}")
+        super().__init__(f"Cannot connect to Docker Daemon, this may indicate that it is not running. {message}")
 
 
 class NotSupportedError(Exception):

src/Kathara/manager/docker/DockerMachine.py

@@ -237,12 +237,20 @@ def create(self, machine: Machine) -> None:
 
         # Sysctl params to pass to the container creation
         sysctl_parameters = {RP_FILTER_NAMESPACE % x: 0 for x in ["all", "default", "lo"]}
+        sysctl_parameters["net.ipv4.ip_forward"] = 1
+        sysctl_parameters["net.ipv4.icmp_ratelimit"] = 0
 
+        sysctl_first_interface = {}
         if first_machine_iface:
-            sysctl_parameters[RP_FILTER_NAMESPACE % "eth0"] = 0
+            def sysctl_linux():
+                if utils.is_wsl_platform():
+                    return {RP_FILTER_NAMESPACE % "eth0": 0}
+                return {}
 
-        sysctl_parameters["net.ipv4.ip_forward"] = 1
-        sysctl_parameters["net.ipv4.icmp_ratelimit"] = 0
+            def sysctl_windows():
+                return {RP_FILTER_NAMESPACE % "eth0": 0}
+
+            sysctl_first_interface = utils.exec_by_platform(sysctl_linux, sysctl_windows, lambda: {})
 
         if machine.is_ipv6_enabled():
             sysctl_parameters["net.ipv6.conf.all.forwarding"] = 1
@@ -252,7 +260,7 @@ def create(self, machine: Machine) -> None:
             sysctl_parameters["net.ipv6.conf.all.disable_ipv6"] = 0
 
         # Merge machine sysctls
-        sysctl_parameters = {**sysctl_parameters, **machine.meta['sysctls']}
+        sysctl_parameters = {**sysctl_parameters, **machine.meta['sysctls'], **sysctl_first_interface}
 
         volumes = {}
 

src/Kathara/manager/docker/DockerManager.py

@@ -5,6 +5,7 @@
 import docker
 import docker.models.containers
 import docker.models.networks
+from docker.errors import DockerException
 from requests.exceptions import ConnectionError as RequestsConnectionError
 
 from .DockerImage import DockerImage
@@ -59,13 +60,16 @@ class DockerManager(IManager):
     @check_docker_status
     def __init__(self) -> None:
         remote_url = Setting.get_instance().remote_url
-        if remote_url is None:
-            self.client: docker.DockerClient = docker.from_env(timeout=None, max_pool_size=utils.get_pool_size())
-        else:
-            tls_config = docker.tls.TLSConfig(ca_cert=Setting.get_instance().cert_path)
-            self.client: docker.DockerClient = docker.DockerClient(base_url=remote_url, timeout=None,
-                                                                   max_pool_size=utils.get_pool_size(),
-                                                                   tls=tls_config)
+        try:
+            if remote_url is None:
+                self.client: docker.DockerClient = docker.from_env(timeout=None, max_pool_size=utils.get_pool_size())
+            else:
+                tls_config = docker.tls.TLSConfig(ca_cert=Setting.get_instance().cert_path)
+                self.client: docker.DockerClient = docker.DockerClient(
+                    base_url=remote_url, timeout=None, max_pool_size=utils.get_pool_size(), tls=tls_config
+                )
+        except DockerException as e:
+            raise DockerDaemonConnectionError(str(e))
 
         docker_plugin = DockerPlugin(self.client)
         docker_plugin.check_and_download_plugin()

src/Kathara/manager/kubernetes/KubernetesMachine.py

@@ -157,6 +157,12 @@ def deploy_machines(self, lab: Lab, selected_machines: Set[str] = None) -> None:
         # Do not open terminals on Megalos
         Setting.get_instance().open_terminals = False
 
+        wait_thread = threading.Thread(
+            target=self._wait_machines_startup,
+            args=(lab, selected_machines if selected_machines else None)
+        )
+        wait_thread.start()
+
         # Deploy all lab machines.
         # If there is no lab.dep file, machines can be deployed using multithreading.
         # If not, they're started sequentially
@@ -171,7 +177,7 @@ def deploy_machines(self, lab: Lab, selected_machines: Set[str] = None) -> None:
             for item in machines:
                 self._deploy_machine(item)
 
-        self._wait_machines_startup(lab, selected_machines if selected_machines else None)
+        wait_thread.join()
 
     def _wait_machines_startup(self, lab: Lab, selected_machines: Set[str]) -> None:
         """Wait the startup of the selected machines. Return when the selected machines become `Ready`.
@@ -492,14 +498,17 @@ def undeploy(self, lab_hash: str, selected_machines: Optional[Set[str]] = None)
             selected_machines = {item.metadata.labels["name"] for item in pods}
 
         if len(pods) > 0:
+            wait_thread = threading.Thread(target=self._wait_machines_shutdown, args=(lab_hash, selected_machines))
+            wait_thread.start()
+
             pool_size = utils.get_pool_size()
             items = utils.chunk_list(pods, pool_size)
 
             with Pool(pool_size) as machines_pool:
                 for chunk in items:
                     machines_pool.map(func=self._undeploy_machine, iterable=chunk)
 
-            self._wait_machines_shutdown(lab_hash, selected_machines)
+            wait_thread.join()
 
     def _wait_machines_shutdown(self, lab_hash: str, selected_machines: Set[str]):
         """Wait the shutdown of the selected machines. Return when all the selected machines are terminated.
@@ -576,24 +585,15 @@ def _delete_machine(self, pod_api_object: client.V1Pod) -> None:
         try:
             shell_env_value = self.get_env_var_value_from_pod(pod_api_object, "_MEGALOS_SHELL")
             shell = shell_env_value if shell_env_value else Setting.get_instance().device_shell
-            output = self.exec(machine_namespace,
-                               machine_name,
-                               command=[shell, '-c', shutdown_commands_string],
-                               )
-
-            try:
-                next(output)
-            except StopIteration:
-                pass
-
-            deployment_name = self.get_deployment_name(machine_name)
-            self.kubernetes_config_map.delete_for_machine(deployment_name, machine_namespace)
-
-            self.client.delete_namespaced_deployment(name=deployment_name,
-                                                     namespace=machine_namespace
-                                                     )
+            self.exec(machine_namespace, machine_name, command=[shell, '-c', shutdown_commands_string], is_stream=False)
         except ApiException:
-            return
+            pass
+        except MachineNotRunningError:
+            pass
+
+        deployment_name = self.get_deployment_name(machine_name)
+        self.kubernetes_config_map.delete_for_machine(deployment_name, machine_namespace)
+        self.client.delete_namespaced_deployment(name=deployment_name, namespace=machine_namespace)
 
     def connect(self, lab_hash: str, machine_name: str, shell: Union[str, List[str]] = None, logs: bool = False) \
             -> None:

src/Kathara/os/Networking.py

@@ -153,8 +153,7 @@ def remove_interface_ns(interface_name: str, switch_path: str, ns_pid: int) -> N
         logging.debug("Killing vde_ext process in namespace `%s`." % switch_path)
 
         pid_path = os.path.join(switch_path, f"pid_{interface_name}")
-        command = f"/bin/sh -c 'kill -2 $(cat {pid_path})'"
-
+        command = f"/bin/sh -c 'if [ -f \"{pid_path}\" ]; then kill -2 $(cat {pid_path}); fi'"
         logging.debug("Running command `%s` in namespace `%s`..." % (command, switch_path))
         nsenter(ns_pid, command, ns_types=['ipc', 'net', 'pid', 'uts'])
 

src/Kathara/utils.py

@@ -130,6 +130,13 @@ def is_platform(desired_platform: str) -> bool:
     return _platform == desired_platform
 
 
+def is_wsl_platform() -> bool:
+    if _platform == LINUX or _platform == LINUX2:
+        info = os.uname()
+        return 'microsoft' in info.release.lower()
+    return False
+
+
 def exec_by_platform(fun_linux: Callable, fun_windows: Callable, fun_mac: Callable) -> Any:
     if _platform == LINUX or _platform == LINUX2:
         return fun_linux()

src/Kathara/version.py

@@ -1,6 +1,6 @@
 from typing import Tuple
 
-CURRENT_VERSION = "3.7.3"
+CURRENT_VERSION = "3.7.4"
 
 
 def parse(version: str) -> Tuple: