dotfiles/nix/systems/toothpick.nix
Magic_RB 1f1b61004a
Trigger restart of vault-agent on key update on toothpick
Signed-off-by: Magic_RB <magic_rb@redalder.org>
2021-09-14 21:56:15 +02:00

411 lines
13 KiB
Nix

inputs: {
system = "x86_64-linux";
modules = [
../nixos-modules/default.nix
({ lib, pkgs, config, secret, ... }: {
magic_rb = {
pins = inputs;
overlays = inputs.self.overlays;
hardware.toothpick = true;
flakes.enable = true;
sshdEmacs.enable = true;
vpsRemoteAccess =
{ enable = true;
trustedWheel = true;
};
};
environment.systemPackages =
[ pkgs.git
pkgs.envoy
];
boot.kernel.sysctl = { "net.ipv4.ip_forward" = "1"; };
services.nomad = {
enable = true;
enableDocker = false;
dropPrivileges = false;
package = config.magic_rb.pkgs.nixpkgs-master.nomad_1_1;
extraPackages = with pkgs; [ consul glibc ];
extraSettingsPaths = [ "/var/secrets/nomad.hcl" ];
};
# https://github.com/NixOS/nixpkgs/issues/76671
# the rpc.statd daemon is not running when not mounting any nfs filesystems on boot
# and can't be manually started...
services.nfs.server.enable = true;
# create default network with `podman -r network create default`
# virtualisation.podman = {
# enable = true;
# };
virtualisation.docker = {
enable = true;
};
services.consul = {
enable = true;
interface = {
bind = "wg0";
advertise = "wg0";
};
extraConfigFiles = [
"/var/secrets/consul.hcl"
];
};
systemd.services.vault-agent = {
restartTriggers = [ "/etc/vault-agent/vault.crt" "/etc/vault-agent/vault.key" ];
serviceConfig = {
ExecPreStart = "mkdir -p /var/secrets/ && chown -R vault-agent:secrets /var/secrets/";
};
};
services.vault-agent = {
enable = true;
settings = {
vault = {
address = "https://${secret.network.ips.vault.dns}:8200";
client_cert = "/etc/vault-agent/vault.crt";
client_key = "/etc/vault-agent/vault.key";
};
auto_auth = {
method = [
{
"cert" = {
name = "system-toothpick";
};
}
];
};
template =
let
refreshConsul = pkgs.writeShellScript "refresh-consul.sh" ''
# CONSUL_ADDR="https://127.0.0.1:8501/" ${pkgs.consul}/bin/consul reload
'';
in [
{
source = pkgs.writeText "vault.key.tpl" ''
{{ with secret "pki_dynra/issue/vault.toothpick" "common_name=vault.toothpick.dyn.redalder.org" "ttl=24h" "alt_names=localhost" "ip_sans=127.0.0.1" }}
{{ .Data.private_key }}
{{ end }}
'';
destination = "/etc/vault-agent/vault.key.new";
}
# create role with
# vault write pki_dynra/roles/vault.toothpick \
# allowed_domains=vault.toothpick.dyn.redalder.org \
# allow_subdomains=false \
# max_ttl=72h \
# allow_bare_domains=true
#
# also requires bootstrapping by generating the key/crt
# the first time, look into the source template. Then the
# generated cert must once again be first added to the
# cert auth method, look into the command. Basically you
# must manually do what vault-agent will do on its own
# after bootstrap
{
source = pkgs.writeText "vault.crt.tpl" ''
{{ with secret "pki_dynra/issue/vault.toothpick" "common_name=vault.toothpick.dyn.redalder.org" "ttl=24h" "alt_names=localhost" "ip_sans=127.0.0.1" }}
{{ .Data.certificate }}
{{ end }}
'';
destination = "/etc/vault-agent/vault.crt.new";
command = pkgs.writeShellScript "vault.crt-renew" ''
export PATH=${pkgs.vault}/bin:$PATH
set -e
export VAULT_ADDR="https://${secret.network.ips.vault.dns}:8200/"
export VAULT_TOKEN="$(vault login \
-method=cert \
-client-cert=/etc/vault-agent/vault.crt \
-client-key=/etc/vault-agent/vault.key \
-token-only \
name=vault.toothpick)"
vault write auth/cert/certs/vault.toothpick \
display_name=vault.toothpick \
policies=vault.toothpick \
certificate=@/etc/vault-agent/vault.crt.new \
ttl=3600
echo "$VAULT_TOKEN" > /var/secrets/vault.token
cp /etc/vault-agent/vault.crt.new /etc/vault-agent/vault.crt
cp /etc/vault-agent/vault.key.new /etc/vault-agent/vault.key
'';
}
# create role with
# vault write pki_dynra/roles/consul.toothpick \
# allowed_domains=consul.toothpick.dyn.redalder.org \
# allow_subdomains=false \
# max_ttl=72h \
# allow_bare_domains=true
#
{
source = pkgs.writeText "consul.crt.tpl" ''
{{ with secret "pki_dynra/issue/consul.toothpick" "common_name=consul.toothpick.dyn.redalder.org" "ttl=24h" "alt_names=localhost" "ip_sans=127.0.0.1" }}
{{ .Data.certificate }}
{{ end }}
'';
destination = "/var/secrets/consul.crt";
command = refreshConsul;
}
{
source = pkgs.writeText "consul.key.tpl" ''
{{ with secret "pki_dynra/issue/consul.toothpick" "common_name=consul.toothpick.dyn.redalder.org" "ttl=24h" "alt_names=localhost" "ip_sans=127.0.0.1" }}
{{ .Data.private_key }}
{{ end }}
'';
destination = "/var/secrets/consul.key";
command = refreshConsul;
}
{
source = pkgs.writeText "ca.crt.tpl" ''
{{ with secret "pki_dynra/cert/ca" }}
{{ .Data.certificate }}
{{ end }}
'';
destination = "/var/secrets/ca.crt";
}
{
source = pkgs.writeText "nomad.hcl.tpl" ''
client {
enabled = true
cni_path = "${pkgs.cni-plugins}/bin"
host_network "public" {
cidr = "64.225.104.221/32"
reserved_ports = ""
}
host_network "vpn" {
cidr = "${secret.network.networks.vpn}"
reserved_ports = ""
}
}
advertise {
http = "${secret.network.ips.toothpick}"
rpc = "${secret.network.ips.toothpick}"
serf = "${secret.network.ips.toothpick}"
}
plugin "docker" {
config {
endpoint = "unix:///var/run/docker.sock"
allow_privileged = true
}
}
vault {
enabled = true
address = "https://${secret.network.ips.vault.dns}:8200"
allow_unauthenticated = false
create_from_role = "nomad-cluster"
}
{{ with secret "kv/data/systems/toothpick/nomad" }}
consul {
ssl = false
address = "127.0.0.1:8500"
# ca_file = "/var/secrets/ca.crt"
# key_file = "/var/secrets/consul.key"
# cert_file = "/var/secrets/consul.crt"
token = "{{ .Data.data.consul_token }}"
auto_advertise = true
server_auto_join = true
client_auto_join = true
}
{{ end }}
log_level = "DEBUG"
disable_update_check = true
datacenter = "do-1"
data_dir = "/var/lib/nomad"
'';
destination = "/var/secrets/nomad.hcl";
perms = "0644";
}
{
source = pkgs.writeText "consul.hcl.tpl" ''
datacenter = "do-1"
node_name = "toothpick"
data_dir = "/var/lib/consul"
retry_join_wan = [ "${secret.network.ips.blowhole.ip}" ]
server = true
primary_datacenter = "homelab-1"
acl {
enabled = true
default_policy = "deny"
enable_token_persistence = true
enable_token_replication = true
{{ with secret "kv/data/systems/toothpick/consul" }}
tokens {
"agent" = "{{ .Data.data.agent_token }}"
"replication" = "{{ .Data.data.replication_token }}"
}
{{ end }}
}
ui_config {
enabled = true
}
connect {
enabled = true
}
# ca_file = "/var/secrets/ca.crt"
# cert_file = "/var/secrets/consul.crt"
# key_file = "/var/secrets/consul.key"
verify_incoming = false
verify_outgoing = false
verify_server_hostname = false
log_level = "DEBUG"
ports {
http = 8500
# https = 8501
grpc = 8502
}
'';
# ca_provider = "vault"
# ca_config {
# address = "https://${secret.network.ips.vault.dns}:8200"
# token = "{{ file "/var/secrets/vault.token" | trimSpace }}"
# root_pki_path = "consul_root"
# intermediate_pki_path = "consul_intermediate"
# }
destination = "/var/secrets/consul.hcl";
perms = "0644";
}
];
};
};
networking = {
hostName = "toothpick";
nameservers =
[ "${secret.network.ips.woodchip}"
"93.184.77.2"
"67.207.67.3"
];
wireguard = {
enable = true;
interfaces."wg0" =
{
postSetup = ''
${pkgs.iptables}/bin/iptables -I FORWARD -i wg0 -o wg0 -j ACCEPT
'';
postShutdown = ''
${pkgs.iptables}/bin/iptables -D FORWARD -i wg0 -o wg0 -j ACCEPT
'';
} // config.magic_rb.secret.wireguard."toothpick";
};
defaultGateway = "64.225.96.1";
defaultGateway6 = "";
dhcpcd.enable = false;
usePredictableInterfaceNames = lib.mkForce false;
firewall = {
extraCommands = ''
iptables -P FORWARD DROP
'';
# extraStopCommands = ''
# '';
interfaces."eth0" = {
allowedTCPPorts =
[ 80
443
];
allowedUDPPorts =
[ 6666
];
};
interfaces."wg0" = {
allowedTCPPorts =
[ 8501
8502
8301
8302
8300
10000
];
allowedTCPPortRanges =
[ {
from = 21000;
to = 21255;
}];
allowedUDPPorts =
[ 8301
8302
];
allowedUDPPortRanges =
[ {
from = 21000;
to = 21255;
}];
};
};
interfaces = {
eth0 = {
ipv4.addresses =
[ { address="64.225.104.221"; prefixLength=20; }
{ address="10.19.0.6"; prefixLength=16; }
];
ipv6.addresses =
[ { address="fe80::8ce0:84ff:fefb:f981";
prefixLength=64;
}
];
ipv4.routes =
[ { address = "64.225.96.1"; prefixLength = 32; }
];
};
};
};
security.pki.certificates =
[ (builtins.readFile ../redalder.org.crt)
(builtins.readFile ../dyn.redalder.org.crt)
];
services.udev.extraRules = ''
ATTR{address}=="8e:e0:84:fb:f9:81", NAME="eth0"
'';
time.timeZone = "Europe/Bratislava";
system.stateVersion = "21.05";
})
];
}