U Ld$ @s>UdZddlZddlmZddlmZddlmZmZddl m Z ddl m Z ddl mZmZdd lmZed Zd dd ed gedgedgdZeed<eeZeeZedddgZdZdZdZedddZedddZee dddZ e!d d!d"Z"e!d d#d$Z#e d%d&d'Z$d(d)Z%e&e e e!dd*d+d,Z'dS)-Z WireguardN)dedent)log)subputil)Cloud)Config) MetaSchema get_meta_doc) PER_INSTANCEaIWireguard module provides a dynamic interface for configuring Wireguard (as a peer or server) in an easy way. This module takes care of: - writing interface configuration files - enabling and starting interfaces - installing wireguard-tools package - loading wireguard kernel module - executing readiness probes What's a readiness probe? The idea behind readiness probes is to ensure Wireguard connectivity before continuing the cloud-init process. This could be useful if you need access to specific services like an internal APT Repository Server (e.g Landscape) to install/update packages. Example: An edge device can't access the internet but uses cloud-init modules which will install packages (e.g landscape, packages, ubuntu_advantage). Those modules will fail due to missing internet connection. The "wireguard" module fixes that problem as it waits until all readinessprobes (which can be arbitrary commands - e.g. checking if a proxy server is reachable over Wireguard network) are finished before continuing the cloud-init "config" stage. .. note:: In order to use DNS with Wireguard you have to install ``resolvconf`` package or symlink it to systemd's ``resolvectl``, otherwise ``wg-quick`` commands will throw an error message that executable ``resolvconf`` is missing which leads wireguard module to fail. Z cc_wireguardz$Module to configure Wireguard tunnelZubuntu wireguarda # Configure one or more WG interfaces and provide optional readinessprobes wireguard: interfaces: - name: wg0 config_path: /etc/wireguard/wg0.conf content: | [Interface] PrivateKey = Address =
[Peer] PublicKey = Endpoint = : AllowedIPs = , , ... - name: wg1 config_path: /etc/wireguard/wg1.conf content: | [Interface] PrivateKey = Address =
[Peer] PublicKey = Endpoint = : AllowedIPs = readinessprobe: - 'systemctl restart service' - 'curl https://webhook.endpoint/example' - 'nc -zv some-service-fqdn 443' )idnametitleZ descriptionZdistrosZ frequencyZactivate_by_schema_keysZexamplesmetar config_pathcontenti ))wg_intcCsg}tt|}|r8dt|}|d|t|D]@\}}|dksd|dksd|dkrDt|t sD|d|d|qD|rt dt t |d S) aRValidate user-provided wg:interfaces option values. This function supplements flexible jsonschema validation with specific value checks to aid in triage of invalid user-provided configuration. @param wg_int: Dict of configuration value under 'wg:interfaces'. @raises: ValueError describing invalid values provided. z, z%Missing required wg:interfaces keys: r rrz$Expected a string for wg:interfaces:. Found z*Invalid wireguard interface configuration:N) REQUIRED_WG_INT_KEYS differencesetkeysjoinsortedappenditems isinstancestr ValueErrorNL)rerrorsZmissingrkeyvaluer&?/usr/lib/python3/dist-packages/cloudinit/config/cc_wireguard.pysupplemental_schema_validationhs  r(c Cstd|dz,td|dtj|d|dtdWnDtk r}z&td|ddtt||W5d }~XYnXd S) zWriting user-provided configuration into Wireguard interface configuration file. @param wg_int: Dict of configuration value under 'wg:interfaces'. @raises: RuntimeError for issues writing of configuration file. z"Configuring Wireguard interface %sr z#Writing wireguard config to file %srr)modez-Failure writing Wireguard configuration file :N) LOGdebugrZ write_fileWG_CONFIG_FILE_MODE Exception RuntimeErrorr"r )rer&r&r' write_configs r1)rcloudc CszTtd|d|jdd|dtd|d|jdd|dWn<tjk r}ztdtt||W5d}~XYnXdS) zEnable and start Wireguard interface @param wg_int: Dict of configuration value under 'wg:interfaces'. @raises: RuntimeError for issues enabling WG interface. zEnabling wg-quick@%s at bootr enablez wg-quick@z!Bringing up interface wg-quick@%sZrestartz0Failed enabling/starting Wireguard interface(s):N) r+r,distroZmanage_servicerProcessExecutionErrorr/r"r )rr2r0r&r&r' enable_wgsr6)wg_readinessprobescCsZg}d}|D],}t|ts |d|d||d7}q |rVtdtt|dS)zBasic validation of user-provided probes @param wg_readinessprobes: List of readinessprobe probe(s). @raises: ValueError of wrong datatype provided for probes. rz(Expected a string for readinessprobe at rz Invalid readinessProbe commands:N)rr rr!r"r)r7r#poscr&r&r'!readinessprobe_command_validations  r;c Csg}|D]b}z$tdt|tj|dddWqtjk rh}z||d|W5d}~XYqXq|rtdtt|dS)zExecute provided readiness probe(s) @param wg_readinessprobes: List of readinessprobe probe(s). @raises: ProcessExecutionError for issues during execution of probes. zRunning readinessprobe: '%s'TZcaptureshellz: Nz&Failed running readinessprobe command:) r+r,r rr5rr/r"r)r7r#r:r0r&r&r'readinessprobes(r>)r2cCsdg}tdrdSttkr*|dz|jWn"tk rZt t dYnXz|j |Wn"tk rt t dYnXdS)zInstall wireguard packages and tools @param cloud: Cloud object @raises: Exception for issues during package installation. zwireguard-toolsZwgNr zPackage update failedz!Failed to install wireguard-tools) rZwhichrZkernel_versionMIN_KERNEL_VERSIONrr4Zupdate_package_sourcesr.logexcr+Zinstall_packages)r2Zpackagesr&r&r' maybe_install_wireguard_packagess      rAc Csz@tjdddd}td|js>tdtjddddWn@tjk r}z t tdt t |W5d}~XYnXdS) zYLoad wireguard kernel module @raises: ProcessExecutionError for issues modprobe ZlsmodTr<r zLoading wireguard kernel modulezmodprobe wireguardz Could not load wireguard module:N) rresearchstdoutstripr+r,r5rr@r"r )outr0r&r&r'load_wireguard_kernel_modules rG)r cfgr2argsreturncCsd}d|kr td|d}ntd|dSt|t|dD]}t|t|t||qFd|kr|ddk r|d}t|t|n tddS)Nr z!Found Wireguard section in configzz+Skipping readinessprobe - no checks defined) r+r,rArGr(r1r6r;r>)r rHr2rIZ wg_sectionrr7r&r&r'handles.      rK)(__doc__rBtextwraprZ cloudinitrZloggingrrZcloudinit.cloudrZcloudinit.configrZcloudinit.config.schemarr Zcloudinit.settingsr ZMODULE_DESCRIPTIONr__annotations__Z getLogger__name__r+ frozensetrr-r"r?dictr(r1r6listr;r>rArGr rKr&r&r&r'sJ     $+