o w7e$ @sFUdZddlZddlmZddlmZddlmZmZddl m Z ddl m Z ddl mZmZdd lmZed Zd dd ed gedgedgdZeed<eeZeeZegdZdZdZdZdefddZdefddZdede fddZ de!fdd Z"de!fd!d"Z#de fd#d$Z$d%d&Z%d'e&d(e de d)e!d*df d+d,Z'dS)- 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. cc_wireguardz$Module to configure Wireguard tunnelubuntu wireguarda # Configure one or more WG interfaces and provide optional readinessprobes wireguard: interfaces: - name: wg0 config_path: /etc/wireguard/wg0.conf content: | [Interface] PrivateKey = Address =
[Peer] PublicKey = Endpoint = : AllowedIPs = , , ... - name: wg1 config_path: /etc/wireguard/wg1.conf content: | [Interface] PrivateKey = Address =
[Peer] PublicKey = Endpoint = : AllowedIPs = readinessprobe: - 'systemctl restart service' - 'curl https://webhook.endpoint/example' - 'nc -zv some-service-fqdn 443' )idnametitle descriptiondistros frequencyactivate_by_schema_keysexamplesmeta)r config_pathcontenti )wg_intcCsg}tt|}|rdt|}|d|t|D] \}}|dks2|dks2|dkrBt|t sB|d|d|q"|rQt dt t |d S) aRValidate user-provided wg:interfaces option values. This function supplements flexible jsonschema validation with specific value checks to aid in triage of invalid user-provided configuration. @param wg_int: Dict of configuration value under 'wg:interfaces'. @raises: ValueError describing invalid values provided. z, z%Missing required wg:interfaces keys: rrrz$Expected a string for wg:interfaces:. Found z*Invalid wireguard interface configuration:N) REQUIRED_WG_INT_KEYS differencesetkeysjoinsortedappenditems isinstancestr ValueErrorNL)rerrorsmissingr"keyvaluer/?/usr/lib/python3/dist-packages/cloudinit/config/cc_wireguard.pysupplemental_schema_validationhs"  r1c Csztd|dztd|dtj|d|dtdWd Sty<}ztd|ddtt||d }~ww) 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 %srz#Writing wireguard config to file %srr)modez-Failure writing Wireguard configuration file :N) LOGdebugr write_fileWG_CONFIG_FILE_MODE Exception RuntimeErrorr*r()rer/r/r0 write_configs( r;cloudc Csz+td|d|jdd|dtd|d|jdd|dWdStjyD}z tdtt||d}~ww) 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 bootrenablez wg-quick@z!Bringing up interface wg-quick@%srestartz0Failed enabling/starting Wireguard interface(s):N) r4r5distromanage_servicerProcessExecutionErrorr9r*r()rr<r:r/r/r0 enable_wgsrBwg_readinessprobescCsZg}d}|D]}t|ts|d|d||d7}q|r+tdtt|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)r'r(r%r)r*r#)rCr+poscr/r/r0!readinessprobe_command_validations rGc Csg}|D]1}ztdt|tj|dddWqtjy5}z||d|WYd}~qd}~ww|rDtdtt|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'Tcaptureshellz: Nz&Failed running readinessprobe command:) r4r5r(rrAr%r9r*r#)rCr+rFr:r/r/r0readinessprobes rKcCsdg}tdr dSttkr|dz|jWnty*t t dwz |j |WdStyBt t dw)zInstall wireguard packages and tools @param cloud: Cloud object @raises: Exception for issues during package installation. zwireguard-toolswgNrzPackage update failedz!Failed to install wireguard-tools) rwhichrkernel_versionMIN_KERNEL_VERSIONr%r?update_package_sourcesr8logexcr4install_packages)r<packagesr/r/r0 maybe_install_wireguard_packagess"       rTc Csz$tjdddd}td|js"tdtjddddWdSWdStjy?}zt tdt t |d}~ww) zYLoad wireguard kernel module @raises: ProcessExecutionError for issues modprobe lsmodTrHrzLoading wireguard kernel modulezmodprobe wireguardz Could not load wireguard module:N) rresearchstdoutstripr4r5rArrQr*r()outr:r/r/r0load_wireguard_kernel_modules r[rcfgargsreturncCsd}d|vrtd|d}ntd|dSt|t|dD]}t|t|t||q#d|vrK|ddurK|d}t|t|dStddS)Nrz!Found Wireguard section in configzsL     $+  "