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routing.nix
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routing.nix
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{ self, lib, pkgs, config, nodeName, ... }: {
imports = [
./common.nix
./consul/client.nix
./oauth.nix
./secrets.nix
./telegraf.nix
./vault/client.nix
];
services.amazon-ssm-agent.enable = true;
services.vault-agent-monitoring.enable = true;
systemd.services.copy-acme-certs = {
before = [ "traefik.service" ];
wantedBy = [ "traefik.service" ];
serviceConfig = {
Type = "oneshot";
RemainAfterExit = false;
Restart = "on-failure";
RestartSec = "30s";
};
path = [ pkgs.coreutils ];
script = ''
set -exuo pipefail
mkdir -p /var/lib/traefik/certs
cp /etc/ssl/certs/${config.cluster.domain}-*.pem /var/lib/traefik/certs
chown -R traefik:traefik /var/lib/traefik
'';
};
security.acme = {
acceptTerms = true;
certs.routing = lib.mkIf (nodeName == "routing") {
dnsProvider = "route53";
dnsResolver = "1.1.1.1:53";
email = "devops@iohk.io";
domain = config.cluster.domain;
credentialsFile = builtins.toFile "nothing" "";
extraDomainNames = [ "*.${config.cluster.domain}" ]
++ config.cluster.extraAcmeSANs;
postRun = ''
cp fullchain.pem /etc/ssl/certs/${config.cluster.domain}-full.pem
cp key.pem /etc/ssl/certs/${config.cluster.domain}-key.pem
systemctl try-restart --no-block traefik.service
export VAULT_TOKEN="$(< /run/keys/vault-token)"
export VAULT_ADDR="http://127.0.0.1:8200"
${pkgs.vault}/bin/vault kv put kv/bootstrap/letsencrypt/key value=@key.pem
${pkgs.vault}/bin/vault kv put kv/bootstrap/letsencrypt/fullchain value=@fullchain.pem
${pkgs.vault}/bin/vault kv put kv/bootstrap/letsencrypt/cert value=@cert.pem
'';
};
};
services.traefik = {
enable = true;
dynamicConfigOptions = {
tls.certificates = [{
certFile = "/var/lib/traefik/certs/${config.cluster.domain}-full.pem";
keyFile = "/var/lib/traefik/certs/${config.cluster.domain}-key.pem";
}];
http = {
routers = {
traefik = {
rule = "Host(`routing.${config.cluster.domain}`)";
service = "api@internal";
entrypoints = "https";
tls = true;
};
};
};
};
staticConfigOptions = {
metrics.influxDB = {
address =
"http://${config.cluster.instances.monitoring.privateIP}:8428";
protocol = "http";
database = "traefik";
addEntryPointsLabels = true;
addServicesLabels = true;
pushInterval = "10s";
};
api = { dashboard = true; };
entryPoints = {
http = {
address = ":80";
http = {
redirections = {
entryPoint = {
scheme = "https";
to = "https";
};
};
};
};
https = { address = ":443"; };
};
providers.consulCatalog = {
refreshInterval = "30s";
prefix = "traefik";
# Forces the read to be fully consistent.
requireConsistent = true;
# Use stale consistency for catalog reads.
stale = false;
# Use local agent caching for catalog reads.
cache = false;
endpoint = {
# Defines the address of the Consul server.
address = "127.0.0.1:${toString config.services.consul.ports.http}";
scheme = "http";
# Defines the datacenter to use. If not provided in Traefik, Consul uses the default agent datacenter.
datacenter = config.cluster.region;
# Token is used to provide a per-request ACL token which overwrites the agent's default token.
# token = ""
# Limits the duration for which a Watch can block. If not provided, the agent default values will be used.
# endpointWaitTime = "1s";
};
# Expose Consul Catalog services by default in Traefik. If set to false, services that don't have a traefik.enable=true tag will be ignored from the resulting routing configuration.
exposedByDefault = false;
# The default host rule for all services.
# For a given service, if no routing rule was defined by a tag, it is
# defined by this defaultRule instead. The defaultRule must be set to a
# valid Go template, and can include sprig template functions. The
# service name can be accessed with the Name identifier, and the template
# has access to all the labels (i.e. tags beginning with the prefix)
# defined on this service.
# The option can be overridden on an instance basis with the
# traefik.http.routers.{name-of-your-choice}.rule tag.
# Default=Host(`{{ normalize .Name }}`)
# defaultRule = ''Host(`{{ .Name }}.{{ index .Labels "customLabel"}}`)'';
defaultRule = "Host(`{{ normalize .Name }}`)";
# The constraints option can be set to an expression that Traefik matches
# against the service tags to determine whether to create any route for that
# service. If none of the service tags match the expression, no route for that
# service is created. If the expression is empty, all detected services are
# included.
# The expression syntax is based on the Tag(`tag`), and TagRegex(`tag`)
# functions, as well as the usual boolean logic.
constraints = "Tag(`ingress`)";
};
};
};
}