diff options
Diffstat (limited to 'src/conf_mode/container.py')
| -rwxr-xr-x | src/conf_mode/container.py | 221 |
1 files changed, 158 insertions, 63 deletions
diff --git a/src/conf_mode/container.py b/src/conf_mode/container.py index 08861053d..aceb27fb0 100755 --- a/src/conf_mode/container.py +++ b/src/conf_mode/container.py @@ -1,6 +1,6 @@ #!/usr/bin/env python3 # -# Copyright (C) 2021-2022 VyOS maintainers and contributors +# Copyright (C) 2021-2023 VyOS maintainers and contributors # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License version 2 or later as @@ -16,18 +16,22 @@ import os +from hashlib import sha256 from ipaddress import ip_address from ipaddress import ip_network -from time import sleep from json import dumps as json_write from vyos.base import Warning from vyos.config import Config from vyos.configdict import dict_merge from vyos.configdict import node_changed +from vyos.configdict import is_node_changed +from vyos.configverify import verify_vrf +from vyos.ifconfig import Interface from vyos.util import call from vyos.util import cmd from vyos.util import run +from vyos.util import rc_cmd from vyos.util import write_file from vyos.template import inc_ip from vyos.template import is_ipv4 @@ -38,8 +42,9 @@ from vyos import ConfigError from vyos import airbag airbag.enable() -config_containers_registry = '/etc/containers/registries.conf' -config_containers_storage = '/etc/containers/storage.conf' +config_containers = '/etc/containers/containers.conf' +config_registry = '/etc/containers/registries.conf' +config_storage = '/etc/containers/storage.conf' systemd_unit_path = '/run/systemd/system' def _cmd(command): @@ -68,6 +73,9 @@ def get_config(config=None): # container base default values can not be merged here - remove and add them later if 'name' in default_values: del default_values['name'] + # registry will be handled below + if 'registry' in default_values: + del default_values['registry'] container = dict_merge(default_values, container) # Merge per-container default values @@ -80,20 +88,38 @@ def get_config(config=None): for name in container['name']: container['name'][name] = dict_merge(default_values, container['name'][name]) + # T5047: Any container related configuration changed? We only + # wan't to restart the required containers and not all of them ... + tmp = is_node_changed(conf, base + ['name', name]) + if tmp: + if 'container_restart' not in container: + container['container_restart'] = [name] + else: + container['container_restart'].append(name) + # XXX: T2665: we can not safely rely on the defaults() when there are # tagNodes in place, it is better to blend in the defaults manually. if 'port' in container['name'][name]: for port in container['name'][name]['port']: - default_values = defaults(base + ['name', 'port']) + default_values_port = defaults(base + ['name', 'port']) container['name'][name]['port'][port] = dict_merge( - default_values, container['name'][name]['port'][port]) + default_values_port, container['name'][name]['port'][port]) # XXX: T2665: we can not safely rely on the defaults() when there are # tagNodes in place, it is better to blend in the defaults manually. if 'volume' in container['name'][name]: for volume in container['name'][name]['volume']: - default_values = defaults(base + ['name', 'volume']) + default_values_volume = defaults(base + ['name', 'volume']) container['name'][name]['volume'][volume] = dict_merge( - default_values, container['name'][name]['volume'][volume]) + default_values_volume, container['name'][name]['volume'][volume]) + + # registry is a tagNode with default values - merge the list from + # default_values['registry'] into the tagNode variables + if 'registry' not in container: + container.update({'registry' : {}}) + default_values = defaults(base) + for registry in default_values['registry'].split(): + tmp = {registry : {}} + container['registry'] = dict_merge(tmp, container['registry']) # Delete container network, delete containers tmp = node_changed(conf, base + ['network']) @@ -142,21 +168,29 @@ def verify(container): raise ConfigError(f'Container network "{network_name}" does not exist!') if 'address' in container_config['network'][network_name]: - address = container_config['network'][network_name]['address'] - network = None - if is_ipv4(address): - network = [x for x in container['network'][network_name]['prefix'] if is_ipv4(x)][0] - elif is_ipv6(address): - network = [x for x in container['network'][network_name]['prefix'] if is_ipv6(x)][0] - - # Specified container IP address must belong to network prefix - if ip_address(address) not in ip_network(network): - raise ConfigError(f'Used container address "{address}" not in network "{network}"!') - - # We can not use the first IP address of a network prefix as this is used by podman - if ip_address(address) == ip_network(network)[1]: - raise ConfigError(f'IP address "{address}" can not be used for a container, '\ - 'reserved for the container engine!') + cnt_ipv4 = 0 + cnt_ipv6 = 0 + for address in container_config['network'][network_name]['address']: + network = None + if is_ipv4(address): + network = [x for x in container['network'][network_name]['prefix'] if is_ipv4(x)][0] + cnt_ipv4 += 1 + elif is_ipv6(address): + network = [x for x in container['network'][network_name]['prefix'] if is_ipv6(x)][0] + cnt_ipv6 += 1 + + # Specified container IP address must belong to network prefix + if ip_address(address) not in ip_network(network): + raise ConfigError(f'Used container address "{address}" not in network "{network}"!') + + # We can not use the first IP address of a network prefix as this is used by podman + if ip_address(address) == ip_network(network)[1]: + raise ConfigError(f'IP address "{address}" can not be used for a container, '\ + 'reserved for the container engine!') + + if cnt_ipv4 > 1 or cnt_ipv6 > 1: + raise ConfigError(f'Only one IP address per address family can be used for '\ + f'container "{name}". {cnt_ipv4} IPv4 and {cnt_ipv6} IPv6 address(es)!') if 'device' in container_config: for dev, dev_config in container_config['device'].items(): @@ -218,6 +252,8 @@ def verify(container): if v6_prefix > 1: raise ConfigError(f'Only one IPv6 prefix can be defined for network "{network}"!') + # Verify VRF exists + verify_vrf(network_config) # A network attached to a container can not be deleted if {'network_remove', 'name'} <= set(container): @@ -226,6 +262,13 @@ def verify(container): if 'network' in container_config and network in container_config['network']: raise ConfigError(f'Can not remove network "{network}", used by container "{container}"!') + if 'registry' in container: + for registry, registry_config in container['registry'].items(): + if 'authentication' not in registry_config: + continue + if not {'username', 'password'} <= set(registry_config['authentication']): + raise ConfigError('If registry username or or password is defined, so must be the other!') + return None def generate_run_arguments(name, container_config): @@ -256,6 +299,11 @@ def generate_run_arguments(name, container_config): for k, v in container_config['environment'].items(): env_opt += f" --env \"{k}={v['value']}\"" + hostname = '' + if 'host_name' in container_config: + hostname = container_config['host_name'] + hostname = f'--hostname {hostname}' + # Publish ports port = '' if 'port' in container_config: @@ -277,62 +325,96 @@ def generate_run_arguments(name, container_config): container_base_cmd = f'--detach --interactive --tty --replace {cap_add} ' \ f'--memory {memory}m --shm-size {shared_memory}m --memory-swap 0 --restart {restart} ' \ - f'--name {name} {device} {port} {volume} {env_opt}' + f'--name {name} {hostname} {device} {port} {volume} {env_opt}' + + entrypoint = '' + if 'entrypoint' in container_config: + # it needs to be json-formatted with single quote on the outside + entrypoint = json_write(container_config['entrypoint'].split()).replace('"', """) + entrypoint = f'--entrypoint '{entrypoint}'' + + hostname = '' + if 'host_name' in container_config: + hostname = container_config['host_name'] + hostname = f'--hostname {hostname}' + + command = '' + if 'command' in container_config: + command = container_config['command'].strip() + + command_arguments = '' + if 'arguments' in container_config: + command_arguments = container_config['arguments'].strip() if 'allow_host_networks' in container_config: - return f'{container_base_cmd} --net host {image}' + return f'{container_base_cmd} --net host {entrypoint} {image} {command} {command_arguments}'.strip() ip_param = '' networks = ",".join(container_config['network']) for network in container_config['network']: - if 'address' in container_config['network'][network]: - address = container_config['network'][network]['address'] - ip_param = f'--ip {address}' + if 'address' not in container_config['network'][network]: + continue + for address in container_config['network'][network]['address']: + if is_ipv6(address): + ip_param += f' --ip6 {address}' + else: + ip_param += f' --ip {address}' - return f'{container_base_cmd} --net {networks} {ip_param} {image}' + return f'{container_base_cmd} --net {networks} {ip_param} {entrypoint} {image} {command} {command_arguments}'.strip() def generate(container): # bail out early - looks like removal from running config if not container: - if os.path.exists(config_containers_registry): - os.unlink(config_containers_registry) - if os.path.exists(config_containers_storage): - os.unlink(config_containers_storage) + for file in [config_containers, config_registry, config_storage]: + if os.path.exists(file): + os.unlink(file) return None if 'network' in container: for network, network_config in container['network'].items(): tmp = { - 'cniVersion' : '0.4.0', - 'name' : network, - 'plugins' : [{ - 'type': 'bridge', - 'bridge': f'cni-{network}', - 'isGateway': True, - 'ipMasq': False, - 'hairpinMode': False, - 'ipam' : { - 'type': 'host-local', - 'routes': [], - 'ranges' : [], - }, - }] + 'name': network, + 'id' : sha256(f'{network}'.encode()).hexdigest(), + 'driver': 'bridge', + 'network_interface': f'pod-{network}', + 'subnets': [], + 'ipv6_enabled': False, + 'internal': False, + 'dns_enabled': True, + 'ipam_options': { + 'driver': 'host-local' + } } - for prefix in network_config['prefix']: - net = [{'gateway' : inc_ip(prefix, 1), 'subnet' : prefix}] - tmp['plugins'][0]['ipam']['ranges'].append(net) + net = {'subnet' : prefix, 'gateway' : inc_ip(prefix, 1)} + tmp['subnets'].append(net) - # install per address-family default orutes - default_route = '0.0.0.0/0' if is_ipv6(prefix): - default_route = '::/0' - tmp['plugins'][0]['ipam']['routes'].append({'dst': default_route}) + tmp['ipv6_enabled'] = True - write_file(f'/etc/cni/net.d/{network}.conflist', json_write(tmp, indent=2)) + write_file(f'/etc/containers/networks/{network}.json', json_write(tmp, indent=2)) - render(config_containers_registry, 'container/registries.conf.j2', container) - render(config_containers_storage, 'container/storage.conf.j2', container) + if 'registry' in container: + cmd = f'podman logout --all' + rc, out = rc_cmd(cmd) + if rc != 0: + raise ConfigError(out) + + for registry, registry_config in container['registry'].items(): + if 'disable' in registry_config: + continue + if 'authentication' in registry_config: + if {'username', 'password'} <= set(registry_config['authentication']): + username = registry_config['authentication']['username'] + password = registry_config['authentication']['password'] + cmd = f'podman login --username {username} --password {password} {registry}' + rc, out = rc_cmd(cmd) + if rc != 0: + raise ConfigError(out) + + render(config_containers, 'container/containers.conf.j2', container) + render(config_registry, 'container/registries.conf.j2', container) + render(config_storage, 'container/storage.conf.j2', container) if 'name' in container: for name, container_config in container['name'].items(): @@ -341,7 +423,8 @@ def generate(container): file_path = os.path.join(systemd_unit_path, f'vyos-container-{name}.service') run_args = generate_run_arguments(name, container_config) - render(file_path, 'container/systemd-unit.j2', {'name': name, 'run_args': run_args}) + render(file_path, 'container/systemd-unit.j2', {'name': name, 'run_args': run_args,}, + formater=lambda _: _.replace(""", '"').replace("'", "'")) return None @@ -360,10 +443,7 @@ def apply(container): # Delete old networks if needed if 'network_remove' in container: for network in container['network_remove']: - call(f'podman network rm {network}') - tmp = f'/etc/cni/net.d/{network}.conflist' - if os.path.exists(tmp): - os.unlink(tmp) + call(f'podman network rm {network} >/dev/null 2>&1') # Add container disabled_new = False @@ -387,11 +467,26 @@ def apply(container): os.unlink(file_path) continue - cmd(f'systemctl restart vyos-container-{name}.service') + if 'container_restart' in container and name in container['container_restart']: + cmd(f'systemctl restart vyos-container-{name}.service') if disabled_new: call('systemctl daemon-reload') + # Start network and assign it to given VRF if requested. this can only be done + # after the containers got started as the podman network interface will + # only be enabled by the first container and yet I do not know how to enable + # the network interface in advance + if 'network' in container: + for network, network_config in container['network'].items(): + network_name = f'pod-{network}' + # T5147: Networks are started only as soon as there is a consumer. + # If only a network is created in the first place, no need to assign + # it to a VRF as there's no consumer, yet. + if os.path.exists(f'/sys/class/net/{network_name}'): + tmp = Interface(network_name) + tmp.set_vrf(network_config.get('vrf', '')) + return None if __name__ == '__main__': |