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- tests/unittests: add a new unit test for network manager net

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activator
- rhel/cloud.cfg: remove ssh_genkeytypes in settings.py and set
 in cloud.cfg
- net/nm: check for presence of ifcfg files when nm connection
 files are absent
This commit is contained in:
eabdullin 2024-01-15 12:24:22 +03:00
parent 2ea0fc34f6
commit 51be451cf8
4 changed files with 318 additions and 1 deletions
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60
SOURCES/ci-rhel-cloud.cfg-remove-ssh_genkeytypes-in-settings.py.patch Normal file
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@ -0,0 +1,60 @@
From 5d6674508c6478fa2ca3d8c5d39b533a0bbb317a Mon Sep 17 00:00:00 2001
From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Date: Thu, 20 May 2021 08:53:55 +0200
Subject: [PATCH] rhel/cloud.cfg: remove ssh_genkeytypes in settings.py and set
in cloud.cfg
RH-Author: Ani Sinha <None>
RH-MergeRequest: 113: rhel/cloud.cfg: remove ssh_genkeytypes in settings.py and set in cloud.cfg
RH-Jira: RHEL-16572
RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
RH-Acked-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
RH-Commit: [1/1] f506bf58dc5458f50624342ec33bcd390aa0b719 (anisinha/rhel-cloud-init)
RH-Author: Emanuele Giuseppe Esposito <eesposit@redhat.com>
RH-MergeRequest: 10: rhel/cloud.cfg: remove ssh_genkeytypes in settings.py and set in cloud.cfg
RH-Commit: [1/1] 6da989423b9b6e017afbac2f1af3649b0487310f
RH-Bugzilla: 1957532
RH-Acked-by: Eduardo Otubo <otubo@redhat.com>
RH-Acked-by: Cathy Avery <cavery@redhat.com>
RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
RH-Acked-by: Mohamed Gamal Morsy <mmorsy@redhat.com>
Currently genkeytypes in cloud.cfg is set to None, so together with
ssh_deletekeys=1 cloudinit on first boot it will just delete the existing
keys and not generate new ones.
Just removing that property in cloud.cfg is not enough, because
settings.py provides another empty default value that will be used
instead, resulting to no key generated even when the property is not defined.
Removing genkeytypes also in settings.py will default to GENERATE_KEY_NAMES,
but since we want only 'rsa', 'ecdsa' and 'ed25519', add back genkeytypes in
cloud.cfg with the above defaults.
Also remove ssh_deletekeys in settings.py as we always need
to 1 (and it also defaults to 1).
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
(cherry picked from commit b545a0cbabe8924d048b7172b30e7aad59ed32d5)
(cherry picked from commit 855dec5dcc0892c0f7cedf06b025a794769a2a8d)
---
cloudinit/settings.py | 2 --
1 file changed, 2 deletions(-)
diff --git a/cloudinit/settings.py b/cloudinit/settings.py
index a36c518d..859ad546 100644
--- a/cloudinit/settings.py
+++ b/cloudinit/settings.py
@@ -55,8 +55,6 @@ CFG_BUILTIN = {
"log_cfgs": [],
"syslog_fix_perms": [],
"mount_default_fields": [None, None, "auto", "defaults,nofail", "0", "2"],
- "ssh_deletekeys": False,
- "ssh_genkeytypes": [],
"system_info": {
"paths": {
"cloud_dir": "/var/lib/cloud",
--
2.41.0

112
SOURCES/net-nm-check-for-presence-of-ifcfg.patch Normal file
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@ -0,0 +1,112 @@
From d1d5166895da471cff3606c70d4e8ab6eec1c006 Mon Sep 17 00:00:00 2001
From: Ani Sinha <anisinha@redhat.com>
Date: Thu, 7 Dec 2023 02:39:51 +0530
Subject: [PATCH] net/nm: check for presence of ifcfg files when nm connection
files are absent (#4645)
On systems that use network manager to manage connections and activate network
interfaces, they may also use ifcfg files for configuring
interfaces using ifcfg-rh network manager plugin. When network manager is used
as the activator, we need to also check for the presence of ifcfg interface
config file when the network manager connection file is absent and if ifcfg-rh
plugin is present.
Hence, with this change, network manager activator first tries to use network
manager connection files to bring up or bring down the interface. If the
connection files are not present and if ifcfg-rh plugin is present, it tries to
use ifcfg files for the interface. If the plugin or the ifcfg files are not
present, the activator fails to activate or deactivate the interface and it
bails out with warning log.
Fixes: GH-4640
Signed-off-by: Ani Sinha <anisinha@redhat.com>
---
cloudinit/net/activators.py | 7 +++++++
cloudinit/net/network_manager.py | 33 ++++++++++++++++++++++++++++++--
2 files changed, 38 insertions(+), 2 deletions(-)
diff --git a/cloudinit/net/activators.py b/cloudinit/net/activators.py
index e69da40d371..dd85886212c 100644
--- a/cloudinit/net/activators.py
+++ b/cloudinit/net/activators.py
@@ -135,6 +135,13 @@ class NetworkManagerActivator(NetworkActivator):
from cloudinit.net.network_manager import conn_filename
filename = conn_filename(device_name)
+ if filename is None:
+ LOG.warning(
+ "Unable to find an interface config file. "
+ "Unable to bring up interface."
+ )
+ return False
+
cmd = ["nmcli", "connection", "load", filename]
if _alter_interface(cmd, device_name):
cmd = ["nmcli", "connection", "up", "filename", filename]
diff --git a/cloudinit/net/network_manager.py b/cloudinit/net/network_manager.py
index 8a99eb3a1c5..76a0ac15eaa 100644
--- a/cloudinit/net/network_manager.py
+++ b/cloudinit/net/network_manager.py
@@ -17,10 +17,12 @@ from cloudinit import log as logging
from cloudinit import subp, util
from cloudinit.net import is_ipv6_address, renderer, subnet_is_ipv6
from cloudinit.net.network_state import NetworkState
+from cloudinit.net.sysconfig import available_nm_ifcfg_rh
NM_RUN_DIR = "/etc/NetworkManager"
NM_LIB_DIR = "/usr/lib/NetworkManager"
NM_CFG_FILE = "/etc/NetworkManager/NetworkManager.conf"
+IFCFG_CFG_FILE = "/etc/sysconfig/network-scripts"
NM_IPV6_ADDR_GEN_CONF = """# This is generated by cloud-init. Do not edit.
#
[.config]
@@ -374,7 +376,7 @@ class Renderer(renderer.Renderer):
for con_id, conn in self.connections.items():
if not conn.valid():
continue
- name = conn_filename(con_id, target)
+ name = nm_conn_filename(con_id, target)
util.write_file(name, conn.dump(), 0o600)
# Select EUI64 to be used by default by NM for creating the address
@@ -384,12 +386,39 @@ class Renderer(renderer.Renderer):
)
-def conn_filename(con_id, target=None):
+def nm_conn_filename(con_id, target=None):
target_con_dir = subp.target_path(target, NM_RUN_DIR)
con_file = f"cloud-init-{con_id}.nmconnection"
return f"{target_con_dir}/system-connections/{con_file}"
+def sysconfig_conn_filename(devname, target=None):
+ target_con_dir = subp.target_path(target, IFCFG_CFG_FILE)
+ con_file = f"ifcfg-{devname}"
+ return f"{target_con_dir}/{con_file}"
+
+
+def conn_filename(devname):
+ """
+ This function returns the name of the interface config file.
+ It first checks for presence of network manager connection file.
+ If absent and ifcfg-rh plugin for network manager is available,
+ it returns the name of the ifcfg file if it is present. If the
+ plugin is not present or the plugin is present but ifcfg file is
+ not, it returns None.
+ This function is called from NetworkManagerActivator class in
+ activators.py.
+ """
+ conn_file = nm_conn_filename(devname)
+ # If the network manager connection file is absent, also check for
+ # presence of ifcfg files for the same interface (if nm-ifcfg-rh plugin is
+ # present, network manager can handle ifcfg files). If both network manager
+ # connection file and ifcfg files are absent, return None.
+ if not os.path.isfile(conn_file) and available_nm_ifcfg_rh():
+ conn_file = sysconfig_conn_filename(devname)
+ return conn_file if os.path.isfile(conn_file) else None
+
+
def cloud_init_nm_conf_filename(target=None):
target_con_dir = subp.target_path(target, NM_RUN_DIR)
conf_file = "30-cloud-init-ip6-addr-gen-mode.conf"

129
SOURCES/tests-unittests-add-a-new-unit-test.patch Normal file
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@ -0,0 +1,129 @@
From bb474df78bfe45ea5f05907eb710e8d5de764fc8 Mon Sep 17 00:00:00 2001
From: Ani Sinha <anisinha@redhat.com>
Date: Thu, 7 Dec 2023 21:03:13 +0530
Subject: [PATCH] tests/unittests: add a new unit test for network manager net
activator (#4672)
Some changes in behavior in network manager net activator was brought in with
the commit
d1d5166895da ("net/nm: check for presence of ifcfg files when nm connection files are absent")
This change adds some unit tests that exercizes network manager activator's
bring_up_interface() method that tests failure scenarios as well as cases
where an ifcfg file is used to bring the interface up.
Signed-off-by: Ani Sinha <anisinha@redhat.com>
---
tests/unittests/test_net_activators.py | 103 +++++++++++++++++++++++++
1 file changed, 103 insertions(+)
diff --git a/tests/unittests/test_net_activators.py b/tests/unittests/test_net_activators.py
index 2a363ec415b..d53701efafb 100644
--- a/tests/unittests/test_net_activators.py
+++ b/tests/unittests/test_net_activators.py
@@ -347,3 +347,105 @@ class TestActivatorsBringDown:
activator.bring_down_all_interfaces(network_state)
for call in m_subp.call_args_list:
assert call in expected_call_list
+
+class TestNetworkManagerActivatorBringUp:
+ @patch("cloudinit.subp.subp", return_value=("", ""))
+ @patch(
+ "cloudinit.net.network_manager.available_nm_ifcfg_rh",
+ return_value=True,
+ )
+ @patch("os.path.isfile")
+ @patch("os.path.exists", return_value=True)
+ def test_bring_up_interface_no_nm_conn(
+ self, m_exists, m_isfile, m_plugin, m_subp
+ ):
+ """
+ There is no network manager connection file but ifcfg-rh plugin is
+ present and ifcfg interface config files are also present. In this
+ case, we should use ifcfg files.
+ """
+
+ def fake_isfile_no_nmconn(filename):
+ return False if filename.endswith(".nmconnection") else True
+
+ m_isfile.side_effect = fake_isfile_no_nmconn
+
+ expected_call_list = [
+ (
+ (
+ [
+ "nmcli",
+ "connection",
+ "load",
+ "".join(
+ [
+ "/etc/sysconfig/network-scripts/ifcfg-eth0",
+ ]
+ ),
+ ],
+ ),
+ {},
+ ),
+ (
+ (
+ [
+ "nmcli",
+ "connection",
+ "up",
+ "filename",
+ "".join(
+ [
+ "/etc/sysconfig/network-scripts/ifcfg-eth0",
+ ]
+ ),
+ ],
+ ),
+ {},
+ ),
+ ]
+
+ index = 0
+ assert NetworkManagerActivator.bring_up_interface("eth0")
+ for call in m_subp.call_args_list:
+ assert call == expected_call_list[index]
+ index += 1
+
+ @patch("cloudinit.subp.subp", return_value=("", ""))
+ @patch(
+ "cloudinit.net.network_manager.available_nm_ifcfg_rh",
+ return_value=False,
+ )
+ @patch("os.path.isfile")
+ @patch("os.path.exists", return_value=True)
+ def test_bring_up_interface_no_plugin_no_nm_conn(
+ self, m_exists, m_isfile, m_plugin, m_subp
+ ):
+ """
+ The ifcfg-rh plugin is absent and nmconnection file is also
+ not present. In this case, we can't use ifcfg file and the
+ interface bring up should fail.
+ """
+
+ def fake_isfile_no_nmconn(filename):
+ return False if filename.endswith(".nmconnection") else True
+
+ m_isfile.side_effect = fake_isfile_no_nmconn
+ assert not NetworkManagerActivator.bring_up_interface("eth0")
+
+ @patch("cloudinit.subp.subp", return_value=("", ""))
+ @patch(
+ "cloudinit.net.network_manager.available_nm_ifcfg_rh",
+ return_value=True,
+ )
+ @patch("os.path.isfile", return_value=False)
+ @patch("os.path.exists", return_value=True)
+ def test_bring_up_interface_no_conn_file(
+ self, m_exists, m_isfile, m_plugin, m_subp
+ ):
+ """
+ Neither network manager connection files are present nor
+ ifcfg files are present. Even if ifcfg-rh plugin is present,
+ we can not bring up the interface. So bring_up_interface()
+ should fail.
+ """
+ assert not NetworkManagerActivator.bring_up_interface("eth0")

18
SPECS/cloud-init.spec
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@ -6,7 +6,7 @@
Name: cloud-init
Version: 23.1.1
Release: 10%{?dist}.alma.1
Release: 11%{?dist}.1.alma.1
Summary: Cloud instance init scripts
Group: System Environment/Base
@ -55,6 +55,14 @@ Patch29: ci-DS-VMware-modify-a-few-log-level-4284.patch
# For bz#2229460 - [rhel-8.9] [RFE] Configure "ipv6.addr-gen-mode=eui64' as default in NetworkManager
Patch30: ci-NM-renderer-set-default-IPv6-addr-gen-mode-for-all-i.patch
# Patches were taken from:
# https://github.com/canonical/cloud-init/commit/d1d5166895da471cff3606c70d4e8ab6eec1c006
Patch31: net-nm-check-for-presence-of-ifcfg.patch
# https://gitlab.com/redhat/centos-stream/rpms/cloud-init/-/commit/46b71b3a2dd8fb9cff34dbc217f5f4a69bad08cb
Patch32: ci-rhel-cloud.cfg-remove-ssh_genkeytypes-in-settings.py.patch
# https://github.com/canonical/cloud-init/commit/bb474df78bfe45ea5f05907eb710e8d5de764fc8
Patch33: tests-unittests-add-a-new-unit-test.patch
# AlmaLinux OS patches
Patch100: 0001-Improvements-for-AlmaLinux-OS-and-CloudLinux-OS.patch
@ -275,6 +283,14 @@ fi
%config(noreplace) %{_sysconfdir}/rsyslog.d/21-cloudinit.conf
%changelog
* Mon Jan 15 2024 Eduard Abdullin <eabdullin@almalinux.org> - 23.1.1-11.1.alma.1
- tests/unittests: add a new unit test for network manager net
activator
- rhel/cloud.cfg: remove ssh_genkeytypes in settings.py and set
in cloud.cfg
- net/nm: check for presence of ifcfg files when nm connection
files are absent
* Tue Oct 10 2023 Elkhan Mammadli <elkhan@almalinux.org> - 23.1.1-10.alma.1
- 0001-Improvements-for-AlmaLinux-OS-and-CloudLinux-OS.patch