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239 lines
9.4 KiB
Nix
239 lines
9.4 KiB
Nix
let
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commonConfig = ./common/acme/client;
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dnsScript = {writeScript, dnsAddress, bash, curl}: writeScript "dns-hook.sh" ''
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#!${bash}/bin/bash
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set -euo pipefail
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echo '[INFO]' "[$2]" 'dns-hook.sh' $*
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if [ "$1" = "present" ]; then
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${curl}/bin/curl --data '{"host": "'"$2"'", "value": "'"$3"'"}' http://${dnsAddress}:8055/set-txt
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else
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${curl}/bin/curl --data '{"host": "'"$2"'"}' http://${dnsAddress}:8055/clear-txt
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fi
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'';
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in import ./make-test-python.nix ({ lib, ... }: {
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name = "acme";
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meta.maintainers = lib.teams.acme.members;
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nodes = rec {
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acme = { nodes, lib, ... }: {
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imports = [ ./common/acme/server ];
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networking.nameservers = lib.mkForce [
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nodes.dnsserver.config.networking.primaryIPAddress
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];
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};
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dnsserver = { nodes, pkgs, ... }: {
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networking.firewall.allowedTCPPorts = [ 8055 53 ];
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networking.firewall.allowedUDPPorts = [ 53 ];
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systemd.services.pebble-challtestsrv = {
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enable = true;
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description = "Pebble ACME challenge test server";
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wantedBy = [ "network.target" ];
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serviceConfig = {
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ExecStart = "${pkgs.pebble}/bin/pebble-challtestsrv -dns01 ':53' -defaultIPv6 '' -defaultIPv4 '${nodes.webserver.config.networking.primaryIPAddress}'";
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# Required to bind on privileged ports.
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AmbientCapabilities = [ "CAP_NET_BIND_SERVICE" ];
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};
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};
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};
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acmeStandalone = { nodes, lib, config, pkgs, ... }: {
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imports = [ commonConfig ];
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networking.nameservers = lib.mkForce [
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nodes.dnsserver.config.networking.primaryIPAddress
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];
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networking.firewall.allowedTCPPorts = [ 80 ];
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security.acme.certs."standalone.test" = {
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webroot = "/var/lib/acme/acme-challenges";
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};
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systemd.targets."acme-finished-standalone.test" = {
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after = [ "acme-standalone.test.service" ];
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wantedBy = [ "acme-standalone.test.service" ];
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};
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services.nginx.enable = true;
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services.nginx.virtualHosts."standalone.test" = {
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locations."/.well-known/acme-challenge".root = "/var/lib/acme/acme-challenges";
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};
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};
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webserver = { nodes, config, pkgs, lib, ... }: {
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imports = [ commonConfig ];
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networking.firewall.allowedTCPPorts = [ 80 443 ];
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networking.nameservers = lib.mkForce [
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nodes.dnsserver.config.networking.primaryIPAddress
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];
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# A target remains active. Use this to probe the fact that
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# a service fired eventhough it is not RemainAfterExit
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systemd.targets."acme-finished-a.example.test" = {
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after = [ "acme-a.example.test.service" ];
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wantedBy = [ "acme-a.example.test.service" ];
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};
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services.nginx.enable = true;
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services.nginx.virtualHosts."a.example.test" = {
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enableACME = true;
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forceSSL = true;
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locations."/".root = pkgs.runCommand "docroot" {} ''
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mkdir -p "$out"
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echo hello world > "$out/index.html"
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'';
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};
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security.acme.server = "https://acme.test/dir";
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specialisation.second-cert.configuration = {pkgs, ...}: {
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systemd.targets."acme-finished-b.example.test" = {
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after = [ "acme-b.example.test.service" ];
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wantedBy = [ "acme-b.example.test.service" ];
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};
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services.nginx.virtualHosts."b.example.test" = {
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enableACME = true;
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forceSSL = true;
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locations."/".root = pkgs.runCommand "docroot" {} ''
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mkdir -p "$out"
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echo hello world > "$out/index.html"
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'';
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};
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};
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specialisation.dns-01.configuration = {pkgs, config, nodes, lib, ...}: {
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security.acme.certs."example.test" = {
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domain = "*.example.test";
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dnsProvider = "exec";
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dnsPropagationCheck = false;
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credentialsFile = with pkgs; writeText "wildcard.env" ''
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EXEC_PATH=${dnsScript { inherit writeScript bash curl; dnsAddress = nodes.dnsserver.config.networking.primaryIPAddress; }}
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'';
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user = config.services.nginx.user;
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group = config.services.nginx.group;
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};
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systemd.targets."acme-finished-example.test" = {
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after = [ "acme-example.test.service" ];
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wantedBy = [ "acme-example.test.service" ];
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};
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systemd.services."acme-example.test" = {
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before = [ "nginx.service" ];
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wantedBy = [ "nginx.service" ];
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};
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services.nginx.virtualHosts."c.example.test" = {
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forceSSL = true;
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sslCertificate = config.security.acme.certs."example.test".directory + "/cert.pem";
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sslTrustedCertificate = config.security.acme.certs."example.test".directory + "/full.pem";
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sslCertificateKey = config.security.acme.certs."example.test".directory + "/key.pem";
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locations."/".root = pkgs.runCommand "docroot" {} ''
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mkdir -p "$out"
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echo hello world > "$out/index.html"
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'';
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};
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};
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# When nginx depends on a service that is slow to start up, requesting used to fail
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# certificates fail. Reproducer for https://github.com/NixOS/nixpkgs/issues/81842
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specialisation.slow-startup.configuration = { pkgs, config, nodes, lib, ...}: {
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systemd.services.my-slow-service = {
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wantedBy = [ "multi-user.target" "nginx.service" ];
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before = [ "nginx.service" ];
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preStart = "sleep 5";
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script = "${pkgs.python3}/bin/python -m http.server";
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};
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systemd.targets."acme-finished-d.example.com" = {
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after = [ "acme-d.example.com.service" ];
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wantedBy = [ "acme-d.example.com.service" ];
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};
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services.nginx.virtualHosts."d.example.com" = {
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forceSSL = true;
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enableACME = true;
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locations."/".proxyPass = "http://localhost:8000";
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};
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};
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};
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client = {nodes, lib, ...}: {
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imports = [ commonConfig ];
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networking.nameservers = lib.mkForce [
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nodes.dnsserver.config.networking.primaryIPAddress
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];
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};
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};
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testScript = {nodes, ...}:
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let
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newServerSystem = nodes.webserver.config.system.build.toplevel;
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switchToNewServer = "${newServerSystem}/bin/switch-to-configuration test";
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in
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# Note, wait_for_unit does not work for oneshot services that do not have RemainAfterExit=true,
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# this is because a oneshot goes from inactive => activating => inactive, and never
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# reaches the active state. To work around this, we create some mock target units which
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# get pulled in by the oneshot units. The target units linger after activation, and hence we
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# can use them to probe that a oneshot fired. It is a bit ugly, but it is the best we can do
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''
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client.start()
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dnsserver.start()
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acme.wait_for_unit("default.target")
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dnsserver.wait_for_unit("pebble-challtestsrv.service")
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client.succeed(
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'curl --data \'{"host": "acme.test", "addresses": ["${nodes.acme.config.networking.primaryIPAddress}"]}\' http://${nodes.dnsserver.config.networking.primaryIPAddress}:8055/add-a'
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)
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client.succeed(
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'curl --data \'{"host": "standalone.test", "addresses": ["${nodes.acmeStandalone.config.networking.primaryIPAddress}"]}\' http://${nodes.dnsserver.config.networking.primaryIPAddress}:8055/add-a'
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)
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acme.start()
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acmeStandalone.start()
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acme.wait_for_unit("default.target")
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acme.wait_for_unit("pebble.service")
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with subtest("can request certificate with HTTPS-01 challenge"):
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acmeStandalone.wait_for_unit("default.target")
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acmeStandalone.succeed("systemctl start acme-standalone.test.service")
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acmeStandalone.wait_for_unit("acme-finished-standalone.test.target")
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client.wait_for_unit("default.target")
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client.succeed("curl https://acme.test:15000/roots/0 > /tmp/ca.crt")
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client.succeed("curl https://acme.test:15000/intermediate-keys/0 >> /tmp/ca.crt")
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with subtest("Can request certificate for nginx service"):
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webserver.wait_for_unit("acme-finished-a.example.test.target")
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client.succeed(
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"curl --cacert /tmp/ca.crt https://a.example.test/ | grep -qF 'hello world'"
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)
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with subtest("Can add another certificate for nginx service"):
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webserver.succeed(
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"/run/current-system/specialisation/second-cert/bin/switch-to-configuration test"
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)
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webserver.wait_for_unit("acme-finished-b.example.test.target")
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client.succeed(
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"curl --cacert /tmp/ca.crt https://b.example.test/ | grep -qF 'hello world'"
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)
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with subtest("Can request wildcard certificates using DNS-01 challenge"):
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webserver.succeed(
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"${switchToNewServer}"
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)
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webserver.succeed(
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"/run/current-system/specialisation/dns-01/bin/switch-to-configuration test"
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)
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webserver.wait_for_unit("acme-finished-example.test.target")
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client.succeed(
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"curl --cacert /tmp/ca.crt https://c.example.test/ | grep -qF 'hello world'"
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)
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with subtest("Can request certificate of nginx when startup is delayed"):
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webserver.succeed(
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"${switchToNewServer}"
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)
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webserver.succeed(
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"/run/current-system/specialisation/slow-startup/bin/switch-to-configuration test"
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)
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webserver.wait_for_unit("acme-finished-d.example.com.target")
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client.succeed("curl --cacert /tmp/ca.crt https://d.example.com/")
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'';
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})
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