[perso/Immae/Config/Nix.git] / modules / private / system / eldiron.nix

{ config, pkgs, lib, ... }:
{
  deployment = {
    targetUser = "root";
    targetHost = config.hostEnv.ips.main.ip4;
    substituteOnDestination = true;
  };
  # ssh-keyscan eldiron | nix-shell -p ssh-to-age --run ssh-to-age
  secrets.ageKeys = [ "age1dxr5lhvtnjssfaqpnf6qx80h8gfwkxg3tdf35m6n9wljmk7wadfs3kmahj" ];
  boot = {
    kernelModules = [ "kvm-intel" ];
    blacklistedKernelModules = [ "nvidiafb" ];
    loader.timeout = 1;
    loader.grub.devices = [ "/dev/sda" "/dev/sdb" ];
    kernel.sysctl = {
      # https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md
      "net.ipv4.tcp_sack" = 0;
    };
    supportedFilesystems = [ "zfs" ];
    kernelParams = ["zfs.zfs_arc_max=6442450944"];
    kernelPackages = pkgs.linuxPackages_latest;
    initrd.availableKernelModules = [ "ahci" "sd_mod" ];
    initrd.secrets = {
      "/boot/pass.key" = "/boot/pass.key";
    };
  };
  services.udev.extraRules = ''
    ACTION=="add", SUBSYSTEM=="net", ATTR{address}=="c8:60:00:56:a0:88", NAME="eth0"
  '';
  nix.maxJobs = 8;
  powerManagement.cpuFreqGovernor = "powersave";
  myEnv = import ../../../nixops/secrets/environment.nix;

  fileSystems = {
    # pools:
    #     zpool: ashift=12
    #     zfast: ashift=12
    # zfs:
    #     zpool/: acltype=posixacl ; xattr=sa ; atime=off ; mountpoint=legacy
    #     zpool/root: encryption=on ; keyformat=passphrase ; keylocation=file:///boot/pass.key
    #     zpool/root/var: atime=on
    #     zfast/: acltype=posixacl ; xattr=sa ; atime=off ; mountpoint=legacy
    #     zfast/root: encryption=on ; keyformat=passphrase ; keylocation=file:///boot/pass.key
    #     zfast/root/etc: ø
    #     zfast/root/nix: ø
    #     zfast/root/tmp: async=disabled
    #     zfast/root/var: atime=on
    #     zfast/root/var/lib: ø
    #     zfast/root/var/lib/mysql: logbias=throughput ; atime=off ; primarycache=metadata
    #     zfast/root/var/lib/postgresql: recordsize=8K ; atime=off ; logbias=throughput
    #     zfast/root/var/lib/postgresql/11.0: ø
    #     zfast/root/var/lib/postgresql/11.0/pg_wal: ø
    "/"     = { fsType = "zfs"; device = "zpool/root"; };
    "/boot" = { fsType = "ext4"; device = "/dev/disk/by-uuid/e6bb18fb-ff56-4b5f-ae9f-e60d40dc0622"; };
    "/etc"  = { fsType = "zfs"; device = "zpool/root/etc"; };
    "/nix"  = { fsType = "zfs"; device = "zfast/root/nix"; };
    "/tmp"  = { fsType = "zfs"; device = "zfast/root/tmp"; };
    "/var"  = { fsType = "zfs"; device = "zpool/root/var"; };
    "/var/lib/mysql" = { fsType = "zfs"; device = "zfast/root/var/lib/mysql"; };
    "/var/lib/postgresql"             = { fsType = "zfs"; device = "zfast/root/var/lib/postgresql"; };
    "/var/lib/postgresql/11.0"        = { fsType = "zfs"; device = "zfast/root/var/lib/postgresql/11.0"; };
    "/var/lib/postgresql/11.0/pg_wal" = { fsType = "zfs"; device = "zfast/root/var/lib/postgresql/11.0/pg_wal"; };
  };
  swapDevices = [ { label = "swap1"; } { label = "swap2"; } ];
  hardware.enableRedistributableFirmware = true;

  services.zfs = {
    autoScrub = {
      enable = false;
    };
  };
  networking = {
    hostId = "8262ca33"; # generated with head -c4 /dev/urandom | od -A none -t x4
    firewall.enable = true;
    # FIXME: on next reboot, remove the /27 and the localCommands
    interfaces."eth0".ipv4.addresses =
      pkgs.lib.attrsets.mapAttrsToList
        (n: ips: { address = ips.ip4; prefixLength = 32; })
        (pkgs.lib.attrsets.filterAttrs (n: v: n != "main") config.hostEnv.ips)
      ++ [ { address = config.hostEnv.ips.main.ip4; prefixLength = 27; } ];
    interfaces."eth0".ipv6.addresses = pkgs.lib.flatten (pkgs.lib.attrsets.mapAttrsToList
      (n: ips: map (ip: { address = ip; prefixLength = (if n == "main" && ip == pkgs.lib.head ips.ip6 then 64 else 128); }) (ips.ip6 or []))
      config.hostEnv.ips);
    defaultGateway = "176.9.151.65";
    localCommands = ''
      # FIXME: Those commands were added by nixops and may not be
      # actually needed
      ip -6 addr add '2a01:4f8:160:3445::/64' dev 'eth0' || true
      ip -4 route change '176.9.151.64/27' via '176.9.151.65' dev 'eth0' || true
      ip -6 route add default via 'fe80::1' dev eth0 || true
    '';
    nameservers = [
      "213.133.98.98"
      "213.133.99.99"
      "213.133.100.100"
      "2a01:4f8:0:a0a1::add:1010"
      "2a01:4f8:0:a102::add:9999"
      "2a01:4f8:0:a111::add:9898"
    ];
  };

  imports = builtins.attrValues (import ../..);

  myServices.buildbot.enable = true;
  myServices.databases.enable = true;
  myServices.gitolite.enable = true;
  myServices.monitoring.enable = true;
  myServices.irc.enable = true;
  myServices.pub.enable = true;
  myServices.tasks.enable = true;
  myServices.mpd.enable = true;
  myServices.dns.enable = true;
  myServices.certificates.enable = true;
  myServices.websites.enable = true;
  myServices.gemini.enable = true;
  myServices.mail.enable = true;
  myServices.ejabberd.enable = true;
  myServices.vpn.enable = true;
  myServices.ftp.enable = true;
  services.duplyBackup.enable = false;
  services.duplyBackup.profiles.oldies.rootDir = "/var/lib/oldies";

  services.netdata.enable = true;
  services.netdata.config.global."memory mode" = "none";
  services.netdata.config.health."enabled" = "no";
  services.netdata.config.web.mode = "none";
  users.users."${config.services.netdata.user}".extraGroups = [ "keys" ];
  environment.etc."netdata/stream.conf".source = config.secrets.fullPaths."netdata-stream.conf";
  secrets.keys = {
    "netdata-stream.conf" = {
      user = config.services.netdata.user;
      group = config.services.netdata.group;
      permissions = "0400";
      text = ''
        [stream]
            enabled = yes
            destination = ${config.myEnv.monitoring.netdata_aggregator}
            api key = ${config.myEnv.monitoring.netdata_keys.eldiron}
      '';
    };
    "zrepl_backup/identity" = {
      user = "root";
      group = "root";
      permissions = "0400";
      text = config.myEnv.zrepl_backup.ssh_key.private;
    };
  };
  programs.ssh.knownHosts.dilion = {
    hostNames = ["dilion.immae.eu"];
    publicKey = let
      profile = config.myEnv.rsync_backup.profiles.dilion;
    in
      "${profile.host_key_type} ${profile.host_key}";
  };

  services.cron = {
    enable = true;
    mailto = "cron@immae.eu";
    systemCronJobs = [
      ''
        0 0 * * * root journalctl -q --since="25 hours ago" -u postfix -t postfix/smtpd -g "immae.eu.*Recipient address rejected"
        # Need a way to blacklist properly
        # 0 0 * * * root journalctl -q --since="25 hours ago" -u postfix -t postfix/smtpd -g "NOQUEUE:"
        0 0 * * * root journalctl -q --since="25 hours ago" -u postfix -t postfix/smtp -g "status=bounced"
      ''
    ];
  };

  environment.systemPackages = [ pkgs.bindfs ];

  services.zrepl = {
    enable = true;
    config = let
      redis_dump = pkgs.writeScript "redis-dump" ''
        #! ${pkgs.stdenv.shell}
        ${pkgs.redis}/bin/redis-cli bgsave
      '';
    in ''
      jobs:
        - type: push
          # must not change
          name: "backup-to-dilion"
          filesystems:
            "zpool/root": true
            "zpool/root/etc": true
            "zpool/root/var<": true
          connect:
            type: ssh+stdinserver
            host: dilion.immae.eu
            user: backup
            port: 22
            identity_file: ${config.secrets.fullPaths."zrepl_backup/identity"}
          snapshotting:
            type: periodic
            prefix: zrepl_
            interval: 1h
            #hooks:
            #  - type: mysql-lock-tables
            #    dsn: "${config.myEnv.zrepl_backup.mysql.user}:${config.myEnv.zrepl_backup.mysql.password}@tcp(localhost)/"
            #    filesystems:
            #      "zpool/root/var": true
            #  - type: command
            #    path: ${redis_dump}
            #    err_is_fatal: false
            #    filesystems:
            #      "zpool/root/var": true
          send:
            encrypted: true
          pruning:
            keep_sender:
              - type: regex
                regex: "^manual_.*"
              - type: grid
                grid: 24x1h | 7x1d | 4x7d | 6x30d
                regex: "^zrepl_.*"
            keep_receiver:
              - type: regex
                regex: "^manual_.*"
              - type: grid
                grid: 6x4h | 7x1d | 4x7d | 6x30d
                regex: "^zrepl_.*"
    '';
  };
  # This value determines the NixOS release with which your system is
  # to be compatible, in order to avoid breaking some software such as
  # database servers. You should change this only after NixOS release
  # notes say you should.
  # https://nixos.org/nixos/manual/release-notes.html
  system.stateVersion = "20.03"; # Did you read the comment?
}
Commit	Line	Data
7e214bf9	1	{ config, pkgs, lib, ... }:
f807d917	2	{
34abd6af IB	3	deployment = {
	4	targetUser = "root";
	5	targetHost = config.hostEnv.ips.main.ip4;
	6	substituteOnDestination = true;
	7	};
282c67a1 IB	8	# ssh-keyscan eldiron \| nix-shell -p ssh-to-age --run ssh-to-age
282c67a1 IB	9	secrets.ageKeys = [ "age1dxr5lhvtnjssfaqpnf6qx80h8gfwkxg3tdf35m6n9wljmk7wadfs3kmahj" ];
34abd6af IB	10	boot = {
	11	kernelModules = [ "kvm-intel" ];
	12	blacklistedKernelModules = [ "nvidiafb" ];
	13	loader.timeout = 1;
	14	loader.grub.devices = [ "/dev/sda" "/dev/sdb" ];
	15	kernel.sysctl = {
	16	# https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md
	17	"net.ipv4.tcp_sack" = 0;
	18	};
	19	supportedFilesystems = [ "zfs" ];
	20	kernelParams = ["zfs.zfs_arc_max=6442450944"];
	21	kernelPackages = pkgs.linuxPackages_latest;
	22	initrd.availableKernelModules = [ "ahci" "sd_mod" ];
	23	initrd.secrets = {
	24	"/boot/pass.key" = "/boot/pass.key";
	25	};
	26	};
	27	services.udev.extraRules = ''
	28	ACTION=="add", SUBSYSTEM=="net", ATTR{address}=="c8:60:00:56:a0:88", NAME="eth0"
	29	'';
	30	nix.maxJobs = 8;
	31	powerManagement.cpuFreqGovernor = "powersave";
282c67a1	32	myEnv = import ../../../nixops/secrets/environment.nix;
f807d917	33
7e214bf9	34	fileSystems = {
ef909e24 IB	35	# pools:
	36	# zpool: ashift=12
	37	# zfast: ashift=12
	38	# zfs:
	39	# zpool/: acltype=posixacl ; xattr=sa ; atime=off ; mountpoint=legacy
	40	# zpool/root: encryption=on ; keyformat=passphrase ; keylocation=file:///boot/pass.key
	41	# zpool/root/var: atime=on
	42	# zfast/: acltype=posixacl ; xattr=sa ; atime=off ; mountpoint=legacy
	43	# zfast/root: encryption=on ; keyformat=passphrase ; keylocation=file:///boot/pass.key
	44	# zfast/root/etc: ø
	45	# zfast/root/nix: ø
	46	# zfast/root/tmp: async=disabled
	47	# zfast/root/var: atime=on
	48	# zfast/root/var/lib: ø
	49	# zfast/root/var/lib/mysql: logbias=throughput ; atime=off ; primarycache=metadata
	50	# zfast/root/var/lib/postgresql: recordsize=8K ; atime=off ; logbias=throughput
	51	# zfast/root/var/lib/postgresql/11.0: ø
	52	# zfast/root/var/lib/postgresql/11.0/pg_wal: ø
34abd6af	53	"/" = { fsType = "zfs"; device = "zpool/root"; };
7e214bf9 IB	54	"/boot" = { fsType = "ext4"; device = "/dev/disk/by-uuid/e6bb18fb-ff56-4b5f-ae9f-e60d40dc0622"; };
7e214bf9 IB	55	"/etc" = { fsType = "zfs"; device = "zpool/root/etc"; };
ef909e24 IB	56	"/nix" = { fsType = "zfs"; device = "zfast/root/nix"; };
ef909e24 IB	57	"/tmp" = { fsType = "zfs"; device = "zfast/root/tmp"; };
7e214bf9	58	"/var" = { fsType = "zfs"; device = "zpool/root/var"; };
ef909e24 IB	59	"/var/lib/mysql" = { fsType = "zfs"; device = "zfast/root/var/lib/mysql"; };
	60	"/var/lib/postgresql" = { fsType = "zfs"; device = "zfast/root/var/lib/postgresql"; };
	61	"/var/lib/postgresql/11.0" = { fsType = "zfs"; device = "zfast/root/var/lib/postgresql/11.0"; };
	62	"/var/lib/postgresql/11.0/pg_wal" = { fsType = "zfs"; device = "zfast/root/var/lib/postgresql/11.0/pg_wal"; };
7e214bf9	63	};
34abd6af IB	64	swapDevices = [ { label = "swap1"; } { label = "swap2"; } ];
34abd6af IB	65	hardware.enableRedistributableFirmware = true;
7e214bf9 IB	66
7e214bf9 IB	67	services.zfs = {
7e214bf9	68	autoScrub = {
05a3b252	69	enable = false;
7e214bf9 IB	70	};
7e214bf9 IB	71	};
f807d917	72	networking = {
31e11cdf	73	hostId = "8262ca33"; # generated with head -c4 /dev/urandom \| od -A none -t x4
f807d917	74	firewall.enable = true;
05a3b252	75	# FIXME: on next reboot, remove the /27 and the localCommands
34abd6af IB	76	interfaces."eth0".ipv4.addresses =
	77	pkgs.lib.attrsets.mapAttrsToList
	78	(n: ips: { address = ips.ip4; prefixLength = 32; })
	79	(pkgs.lib.attrsets.filterAttrs (n: v: n != "main") config.hostEnv.ips)
	80	++ [ { address = config.hostEnv.ips.main.ip4; prefixLength = 27; } ];
f807d917 IB	81	interfaces."eth0".ipv6.addresses = pkgs.lib.flatten (pkgs.lib.attrsets.mapAttrsToList
f807d917 IB	82	(n: ips: map (ip: { address = ip; prefixLength = (if n == "main" && ip == pkgs.lib.head ips.ip6 then 64 else 128); }) (ips.ip6 or []))
619e4f46	83	config.hostEnv.ips);
34abd6af IB	84	defaultGateway = "176.9.151.65";
	85	localCommands = ''
	86	# FIXME: Those commands were added by nixops and may not be
	87	# actually needed
	88	ip -6 addr add '2a01:4f8:160:3445::/64' dev 'eth0' \|\| true
	89	ip -4 route change '176.9.151.64/27' via '176.9.151.65' dev 'eth0' \|\| true
	90	ip -6 route add default via 'fe80::1' dev eth0 \|\| true
	91	'';
	92	nameservers = [
	93	"213.133.98.98"
	94	"213.133.99.99"
	95	"213.133.100.100"
	96	"2a01:4f8:0:a0a1::add:1010"
	97	"2a01:4f8:0:a102::add:9999"
	98	"2a01:4f8:0:a111::add:9898"
	99	];
f807d917 IB	100	};
	101
	102	imports = builtins.attrValues (import ../..);
	103
	104	myServices.buildbot.enable = true;
	105	myServices.databases.enable = true;
	106	myServices.gitolite.enable = true;
3bc32d9e	107	myServices.monitoring.enable = true;
f807d917 IB	108	myServices.irc.enable = true;
	109	myServices.pub.enable = true;
	110	myServices.tasks.enable = true;
8415083e IB	111	myServices.mpd.enable = true;
	112	myServices.dns.enable = true;
	113	myServices.certificates.enable = true;
	114	myServices.websites.enable = true;
ef118cb3	115	myServices.gemini.enable = true;
8415083e	116	myServices.mail.enable = true;
3f453c7d	117	myServices.ejabberd.enable = true;
ea9c6fe8	118	myServices.vpn.enable = true;
fcbdf67a	119	myServices.ftp.enable = true;
5b42284e	120	services.duplyBackup.enable = false;
213c323a	121	services.duplyBackup.profiles.oldies.rootDir = "/var/lib/oldies";
f807d917	122
e43fdf34 IB	123	services.netdata.enable = true;
	124	services.netdata.config.global."memory mode" = "none";
	125	services.netdata.config.health."enabled" = "no";
	126	services.netdata.config.web.mode = "none";
c081a03a	127	users.users."${config.services.netdata.user}".extraGroups = [ "keys" ];
da30ae4f	128	environment.etc."netdata/stream.conf".source = config.secrets.fullPaths."netdata-stream.conf";
4c4652aa IB	129	secrets.keys = {
4c4652aa IB	130	"netdata-stream.conf" = {
c081a03a IB	131	user = config.services.netdata.user;
	132	group = config.services.netdata.group;
	133	permissions = "0400";
	134	text = ''
	135	[stream]
	136	enabled = yes
	137	destination = ${config.myEnv.monitoring.netdata_aggregator}
	138	api key = ${config.myEnv.monitoring.netdata_keys.eldiron}
	139	'';
4c4652aa IB	140	};
4c4652aa IB	141	"zrepl_backup/identity" = {
8bf83d7a IB	142	user = "root";
	143	group = "root";
	144	permissions = "0400";
5dda316b	145	text = config.myEnv.zrepl_backup.ssh_key.private;
4c4652aa IB	146	};
4c4652aa IB	147	};
8bf83d7a IB	148	programs.ssh.knownHosts.dilion = {
	149	hostNames = ["dilion.immae.eu"];
	150	publicKey = let
	151	profile = config.myEnv.rsync_backup.profiles.dilion;
	152	in
	153	"${profile.host_key_type} ${profile.host_key}";
	154	};
	155
f807d917 IB	156	services.cron = {
f807d917 IB	157	enable = true;
4227853a	158	mailto = "cron@immae.eu";
f807d917 IB	159	systemCronJobs = [
f807d917 IB	160	''
fb7611c1 IB	161	0 0 * * * root journalctl -q --since="25 hours ago" -u postfix -t postfix/smtpd -g "immae.eu.*Recipient address rejected"
	162	# Need a way to blacklist properly
	163	# 0 0 * * * root journalctl -q --since="25 hours ago" -u postfix -t postfix/smtpd -g "NOQUEUE:"
	164	0 0 * * * root journalctl -q --since="25 hours ago" -u postfix -t postfix/smtp -g "status=bounced"
f807d917 IB	165	''
	166	];
	167	};
	168
740a6506	169	environment.systemPackages = [ pkgs.bindfs ];
f831eb7e	170
5dda316b IB	171	services.zrepl = {
	172	enable = true;
	173	config = let
	174	redis_dump = pkgs.writeScript "redis-dump" ''
	175	#! ${pkgs.stdenv.shell}
	176	${pkgs.redis}/bin/redis-cli bgsave
	177	'';
	178	in ''
	179	jobs:
	180	- type: push
	181	# must not change
	182	name: "backup-to-dilion"
	183	filesystems:
	184	"zpool/root": true
	185	"zpool/root/etc": true
	186	"zpool/root/var<": true
	187	connect:
	188	type: ssh+stdinserver
	189	host: dilion.immae.eu
	190	user: backup
	191	port: 22
	192	identity_file: ${config.secrets.fullPaths."zrepl_backup/identity"}
	193	snapshotting:
	194	type: periodic
	195	prefix: zrepl_
8b150321 IB	196	interval: 1h
	197	#hooks:
	198	# - type: mysql-lock-tables
	199	# dsn: "${config.myEnv.zrepl_backup.mysql.user}:${config.myEnv.zrepl_backup.mysql.password}@tcp(localhost)/"
	200	# filesystems:
	201	# "zpool/root/var": true
	202	# - type: command
	203	# path: ${redis_dump}
	204	# err_is_fatal: false
	205	# filesystems:
	206	# "zpool/root/var": true
5dda316b IB	207	send:
	208	encrypted: true
	209	pruning:
	210	keep_sender:
5dda316b IB	211	- type: regex
	212	regex: "^manual_.*"
	213	- type: grid
8b150321	214	grid: 24x1h \| 7x1d \| 4x7d \| 6x30d
5dda316b IB	215	regex: "^zrepl_.*"
	216	keep_receiver:
	217	- type: regex
	218	regex: "^manual_.*"
	219	- type: grid
8b150321	220	grid: 6x4h \| 7x1d \| 4x7d \| 6x30d
5dda316b IB	221	regex: "^zrepl_.*"
	222	'';
	223	};
f807d917 IB	224	# This value determines the NixOS release with which your system is
	225	# to be compatible, in order to avoid breaking some software such as
	226	# database servers. You should change this only after NixOS release
	227	# notes say you should.
61ebe69b	228	# https://nixos.org/nixos/manual/release-notes.html
d43e0c61	229	system.stateVersion = "20.03"; # Did you read the comment?
f807d917	230	}