I Like To Move It

3 files changed, 207 insertions, 0 deletions

diff --git a/modules/cd/default.nix b/modules/cd/default.nix
new file mode 100644
index 00000000..a4e6bbc7
--- /dev/null
+++ b/modules/cd/default.nix
@@ -0,0 +1,118 @@
+{ config, pkgs, ... }:
+
+{
+  imports =
+    [
+      <secrets/hashedPasswords.nix>
+      ./iptables.nix
+      ./networking.nix
+      ../tv/base-cac-CentOS-7-64bit.nix
+      ../tv/ejabberd.nix # XXX echtes modul
+      ../tv/exim-smarthost.nix
+      ../tv/retiolum.nix
+      ../tv/sanitize.nix
+    ];
+
+  # "Developer 2" plan has two vCPUs.
+  nix.maxJobs = 2;
+
+
+  environment.systemPackages = with pkgs; [
+    htop
+    iftop
+    iotop
+    iptables
+    mutt    # for mv
+    nethogs
+    rxvt_unicode.terminfo
+    tcpdump
+  ];
+
+  security.rtkit.enable = false;
+
+  services.cron.enable = false;
+
+  services.ejabberd-cd = {
+    enable = true;
+  };
+
+  services.journald.extraConfig = ''
+    SystemMaxUse=1G
+    RuntimeMaxUse=128M
+  '';
+
+  services.ntp.enable = false;
+
+  services.openssh = {
+    enable = true;
+    hostKeys = [
+      # XXX bits here make no science
+      { bits = 8192; type = "ed25519"; path = "/etc/ssh/ssh_host_ed25519_key"; }
+    ];
+    permitRootLogin = "yes";
+  };
+
+  services.retiolum = {
+    enable = true;
+    hosts = /etc/nixos/hosts;
+    privateKeyFile = "/etc/nixos/secrets/cd.retiolum.rsa_key.priv";
+    connectTo = [
+      "fastpoke"
+      "pigstarter"
+      "ire"
+    ];
+  };
+
+  sound.enable = false;
+
+  # TODO base
+  time.timeZone = "UTC";
+
+  # TODO replace by ./modules/cd-users.nix
+  users.extraGroups = {
+
+    # ● systemd-tmpfiles-setup.service - Create Volatile Files and Directories
+    #    Loaded: loaded (/nix/store/2l33gg7nmncqkpysq9f5fxyhlw6ncm2j-systemd-217/example/systemd/system/systemd-tmpfiles-setup.service)
+    #    Active: failed (Result: exit-code) since Mon 2015-03-16 10:29:18 UTC; 4s ago
+    #      Docs: man:tmpfiles.d(5)
+    #            man:systemd-tmpfiles(8)
+    #   Process: 19272 ExecStart=/nix/store/2l33gg7nmncqkpysq9f5fxyhlw6ncm2j-systemd-217/bin/systemd-tmpfiles --create --remove --boot --exclude-prefix=/dev (code=exited, status=1/FAILURE)
+    #  Main PID: 19272 (code=exited, status=1/FAILURE)
+    # 
+    # Mar 16 10:29:17 cd systemd-tmpfiles[19272]: [/usr/lib/tmpfiles.d/legacy.conf:26] Unknown group 'lock'.
+    # Mar 16 10:29:18 cd systemd-tmpfiles[19272]: Two or more conflicting lines for /var/log/journal configured, ignoring.
+    # Mar 16 10:29:18 cd systemd-tmpfiles[19272]: Two or more conflicting lines for /var/log/journal/7b35116927d74ea58785e00b47ac0f0d configured, ignoring.
+    # Mar 16 10:29:18 cd systemd[1]: systemd-tmpfiles-setup.service: main process exited, code=exited, status=1/FAILURE
+    # Mar 16 10:29:18 cd systemd[1]: Failed to start Create Volatile Files and Directories.
+    # Mar 16 10:29:18 cd systemd[1]: Unit systemd-tmpfiles-setup.service entered failed state.
+    # Mar 16 10:29:18 cd systemd[1]: systemd-tmpfiles-setup.service failed.
+    # warning: error(s) occured while switching to the new configuration
+    lock.gid = 10001;
+
+  };
+  users.extraUsers =
+    {
+      root = {
+        openssh.authorizedKeys.keys = [
+          "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEieAihh+o208aeCA14fAtjzyZN/nrpOJt2vZ5VYZp69 deploy@wu"
+          "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDDYv5OkVrnerkzJwgi7ol7HzcWJf4oWCJTX84trFX5vgJXu1zMvSe+koY8xpnMOd7WHF2wgsjjrFlMuixTrfMPc/OjvG2N1TlnvzlFD8ivTW/AJzDwNxT//niqAYAZ9kmb8e/zE/SyNHSKZcyEKGiiW2+YW9wWHPYRP/XiNEjLP3BeTGScMwWr001V/8m7ne4SGHrE1FbHbHqaBXgqUFgnvzMY3CsfDafODZlj5xSMNGHyLGNNKvu3YR1crcAjbQrBXBdwaArThFxp+e2uWrnffshlks6WtRyR1AFVjc/gxEG74Axq1AHY6EJm2Fw/JdFNiYQ7yyQZHS9bZJYjgnWF tv@nomic"
+        ];
+      };
+
+      mv = rec {
+        name = "mv";
+        uid = 1338;
+        group = "users";
+        home = "/home/${name}";
+        createHome = true;
+        useDefaultShell = true;
+        openssh.authorizedKeys.keys = [
+          "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGer9e2+Lew7vnisgBbsFNECEIkpNJgEaqQqgb9inWkQ mv@vod"
+        ];
+      };
+
+    };
+
+  users.mutableUsers = false;
+
+}
diff --git a/modules/cd/iptables.nix b/modules/cd/iptables.nix
new file mode 100644
index 00000000..48425e8d
--- /dev/null
+++ b/modules/cd/iptables.nix
@@ -0,0 +1,75 @@
+{ config, pkgs, ... }:
+
+{
+  #
+  # iptables
+  #
+  networking.firewall.enable = false;
+  system.activationScripts.iptables =
+    let
+      log = false;
+      when = c: f: if c then f else "";
+    in
+      ''
+        ip4tables() { ${pkgs.iptables}/sbin/iptables "$@"; }
+        ip6tables() { ${pkgs.iptables}/sbin/ip6tables "$@"; }
+        ipXtables() { ip4tables "$@" && ip6tables "$@"; }
+
+        # XXX This fails with the original CAC CentOS 7 kernel.
+        if ipXtables -vL >/dev/null; then
+
+          #
+          # nat
+          #
+
+          # reset tables
+          ipXtables -t nat -F
+          ipXtables -t nat -X
+
+          #
+          ipXtables -t nat -A PREROUTING -j REDIRECT ! -i retiolum -p tcp --dport ssh --to-ports 0
+          ipXtables -t nat -A PREROUTING -j REDIRECT -p tcp --dport 11423 --to-ports ssh
+
+          #
+          # filter
+          #
+
+          # reset tables
+          ipXtables -P INPUT DROP
+          ipXtables -P FORWARD DROP
+          ipXtables -F
+          ipXtables -X
+
+          # create custom chains
+          ipXtables -N Retiolum
+
+          # INPUT
+          ipXtables -A INPUT -j ACCEPT -m conntrack --ctstate RELATED,ESTABLISHED
+          ipXtables -A INPUT -j ACCEPT -i lo
+          ipXtables -A INPUT -j ACCEPT -p tcp --dport ssh -m conntrack --ctstate NEW
+          #ipXtables -A INPUT -j ACCEPT -p tcp --dport http -m conntrack --ctstate NEW
+          ipXtables -A INPUT -j ACCEPT -p tcp --dport tinc -m conntrack --ctstate NEW
+          ipXtables -A INPUT -j ACCEPT -p tcp --dport smtp -m conntrack --ctstate NEW
+          ipXtables -A INPUT -j ACCEPT -p tcp --dport xmpp-client -m conntrack --ctstate NEW
+          ipXtables -A INPUT -j ACCEPT -p tcp --dport xmpp-server -m conntrack --ctstate NEW
+
+          ipXtables -A INPUT -j Retiolum -i retiolum
+          ${when log "ipXtables -A INPUT -j LOG --log-level info --log-prefix 'INPUT DROP '"}
+
+          # FORWARD
+          ${when log "ipXtables -A FORWARD -j LOG --log-level info --log-prefix 'FORWARD DROP '"}
+
+          # Retiolum
+          ip4tables -A Retiolum -j ACCEPT -p icmp --icmp-type echo-request
+          ip6tables -A Retiolum -j ACCEPT -p ipv6-icmp -m icmp6 --icmpv6-type echo-request
+
+
+          ${when log "ipXtables -A Retiolum -j LOG --log-level info --log-prefix 'REJECT '"}
+          ipXtables -A Retiolum -j REJECT -p tcp --reject-with tcp-reset
+          ip4tables -A Retiolum -j REJECT -p udp --reject-with icmp-port-unreachable
+          ip4tables -A Retiolum -j REJECT        --reject-with icmp-proto-unreachable
+          ip6tables -A Retiolum -j REJECT -p udp --reject-with icmp6-port-unreachable
+          ip6tables -A Retiolum -j REJECT
+        fi
+      '';
+}
diff --git a/modules/cd/networking.nix b/modules/cd/networking.nix
new file mode 100644
index 00000000..215e2082
--- /dev/null
+++ b/modules/cd/networking.nix
@@ -0,0 +1,14 @@
+{...}:
+{
+  networking.hostName = "cd";
+  networking.interfaces.enp2s1.ip4 = [
+    {
+      address = "162.219.7.216";
+      prefixLength = 24;
+    }
+  ];
+  networking.defaultGateway = "162.219.7.1";
+  networking.nameservers = [
+    "8.8.8.8"
+  ];
+}