܍~c!% UdZddlZddlmZddlmZddlmZddlmZm Z ddl m Z ddl m Z dd lmZmZdd lmZed Zd dd edgedgedgdZeed<eeZejeZegdZdZdZdZdefdZdefdZ dede fdZ!de"fdZ#de"fdZ$de fdZ%d Z&d!e'd"e de d#ed$e"d%df d&Z(dS)' WireguardN)Logger)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$Module to configure Wireguard tunnelubuntu wireguarda # Configure one or more WG interfaces and provide optional readinessprobes wireguard: interfaces: - name: wg0 config_path: /etc/wireguard/wg0.conf content: | [Interface] PrivateKey = Address =
[Peer] PublicKey = Endpoint = : AllowedIPs = , , ... - name: wg1 config_path: /etc/wireguard/wg1.conf content: | [Interface] PrivateKey = Address =
[Peer] PublicKey = Endpoint = : AllowedIPs = readinessprobe: - 'systemctl restart service' - 'curl https://webhook.endpoint/example' - 'nc -zv some-service-fqdn 443' )idnametitle descriptiondistros frequencyactivate_by_schema_keysexamplesmeta)r config_pathcontenti )wg_intc,g}tt|}|r:dt |}|d|t |D]G\}}|dks |dks|dkr0t|ts|d|d|H|r1tdtt|d S) aRValidate user-provided wg:interfaces option values. This function supplements flexible jsonschema validation with specific value checks to aid in triage of invalid user-provided configuration. @param wg_int: Dict of configuration value under 'wg:interfaces'. @raises: ValueError describing invalid values provided. z, z%Missing required wg:interfaces keys: rrrz$Expected a string for wg:interfaces:. Found z*Invalid wireguard interface configuration:N) REQUIRED_WG_INT_KEYS differencesetkeysjoinsortedappenditems isinstancestr ValueErrorNL)rerrorsmissingr%keyvalues ?/usr/lib/python3/dist-packages/cloudinit/config/cc_wireguard.pysupplemental_schema_validationr3is#F"--c&++--.@.@AAGFyy)) DdDDEEEV\\^^,, U &==C=00C94D4DeS))  O3OOOO  N NRWWV__ N N     c `td|d td|dtj|d|dtd S#t $r5}t d|ddtt||d }~wwxYw) zWriting user-provided configuration into Wireguard interface configuration file. @param wg_int: Dict of configuration value under 'wg:interfaces'. @raises: RuntimeError for issues writing of configuration file. z"Configuring Wireguard interface %srz#Writing wireguard config to file %srr)modez-Failure writing Wireguard configuration file :N) LOGdebugr write_fileWG_CONFIG_FILE_MODE Exception RuntimeErrorr-r+)res r2 write_configr?sII2F6NCCC  7 9NOOO  = !6)#4;N        5}% 5 5(* 5,/FF 5 5   sA A.. B-80B((B-cloudc td|d|jdd|dtd|d|jdd|ddS#tj$r,}t dtt||d}~wwxYw) 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@%sstartz0Failed enabling/starting Wireguard interface(s):N) r8r9distromanage_servicerProcessExecutionErrorr=r-r+)rr@r>s r2 enable_wgrGs 0&.AAA ##H.J&..J.JKKK 5vf~FFF ##G-I-I-IJJJJJ  % Kr K3q66 K K   sB BC 'CC wg_readinessprobescg}d}|D]7}t|ts |d|d||dz }8|r1tdtt|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 r!z Invalid readinessProbe commands:N)r*r+r(r,r-r&)rHr.poscs r2!readinessprobe_command_validationrMsF C !S!!  MMK3KKKK    1HC   Dr D2776?? D D     r4cfg}|D]x} tdt|tj|ddC#tj$r$}||d|Yd}~qd}~wwxYw|r1t dtt|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:) r8r9r+rrFr(r=r-r&)rHr.rLr>s r2readinessproberRsF '' ' II4c!ff = = = IaT 2 2 2 2 2) ' ' ' MMQ++!++ & & & & & & & & '  JR J J J     s?AA;A66A;cdg}tjdrdStjtkr|d |jn)#t$rtj tdwxYw |j |dS#t$rtj tdwxYw)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(rDupdate_package_sourcesr<logexcr8install_packages)r@packagess r2 maybe_install_wireguard_packagesr\s""H z$ 111 $$$ ++----  C0111  %%h/////  C<=== s A&&&B B,,&Cc  tjddd}tjd|js3t dtjddddSdS#tj$r7}tj t dtt|d}~wwxYw) zYLoad wireguard kernel module @raises: ProcessExecutionError for issues modprobe lsmodTrOrzLoading wireguard kernel modulezmodprobe wireguardz Could not load wireguard module:N) rresearchstdoutstripr8r9rFrrYr-r+)outr>s r2load_wireguard_kernel_modulerds iT:::ycj&6&6&8&899 F II7 8 8 8 I*D E E E E E E F F  % CHBHAHHIII sA4A::C 2B;;Crcfgrargsreturncd}d|vr#td|d}ntd|dSt|t|dD]0}t |t |t ||1d|vr0|d(|d}t|t|dStddS)Nrz!Found Wireguard section in configzr|sz  $$$$$$ !!!!!!######<<<<<<<<++++++V!!H   3%z +}    ))j)))V ,t  g!! y!C!C!CDD  4    :*d5$ $    , t    *E<   &A &A&A#(&A/5&A=A&A &A&A&A&A&A&Ar4