274 lines
8.9 KiB
Nix
274 lines
8.9 KiB
Nix
{ config, pkgs, lib, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
cfg = config.services.netdata;
|
|
|
|
wrappedPlugins = pkgs.runCommand "wrapped-plugins" { preferLocalBuild = true; } ''
|
|
mkdir -p $out/libexec/netdata/plugins.d
|
|
ln -s /run/wrappers/bin/apps.plugin $out/libexec/netdata/plugins.d/apps.plugin
|
|
ln -s /run/wrappers/bin/cgroup-network $out/libexec/netdata/plugins.d/cgroup-network
|
|
ln -s /run/wrappers/bin/perf.plugin $out/libexec/netdata/plugins.d/perf.plugin
|
|
ln -s /run/wrappers/bin/slabinfo.plugin $out/libexec/netdata/plugins.d/slabinfo.plugin
|
|
ln -s /run/wrappers/bin/freeipmi.plugin $out/libexec/netdata/plugins.d/freeipmi.plugin
|
|
'';
|
|
|
|
plugins = [
|
|
"${cfg.package}/libexec/netdata/plugins.d"
|
|
"${wrappedPlugins}/libexec/netdata/plugins.d"
|
|
] ++ cfg.extraPluginPaths;
|
|
|
|
localConfig = {
|
|
global = {
|
|
"plugins directory" = concatStringsSep " " plugins;
|
|
};
|
|
web = {
|
|
"web files owner" = "root";
|
|
"web files group" = "root";
|
|
};
|
|
"plugin:cgroups" = {
|
|
"script to get cgroup network interfaces" = "${wrappedPlugins}/libexec/netdata/plugins.d/cgroup-network";
|
|
"use unified cgroups" = "yes";
|
|
};
|
|
};
|
|
mkConfig = generators.toINI {} (recursiveUpdate localConfig cfg.config);
|
|
configFile = pkgs.writeText "netdata.conf" (if cfg.configText != null then cfg.configText else mkConfig);
|
|
|
|
defaultUser = "netdata";
|
|
|
|
in {
|
|
options = {
|
|
services.netdata = {
|
|
enable = mkEnableOption "netdata";
|
|
|
|
package = mkOption {
|
|
type = types.package;
|
|
default = pkgs.netdata;
|
|
defaultText = "pkgs.netdata";
|
|
description = "Netdata package to use.";
|
|
};
|
|
|
|
user = mkOption {
|
|
type = types.str;
|
|
default = "netdata";
|
|
description = "User account under which netdata runs.";
|
|
};
|
|
|
|
group = mkOption {
|
|
type = types.str;
|
|
default = "netdata";
|
|
description = "Group under which netdata runs.";
|
|
};
|
|
|
|
configText = mkOption {
|
|
type = types.nullOr types.lines;
|
|
description = "Verbatim netdata.conf, cannot be combined with config.";
|
|
default = null;
|
|
example = ''
|
|
[global]
|
|
debug log = syslog
|
|
access log = syslog
|
|
error log = syslog
|
|
'';
|
|
};
|
|
|
|
python = {
|
|
enable = mkOption {
|
|
type = types.bool;
|
|
default = true;
|
|
description = ''
|
|
Whether to enable python-based plugins
|
|
'';
|
|
};
|
|
extraPackages = mkOption {
|
|
type = types.functionTo (types.listOf types.package);
|
|
default = ps: [];
|
|
defaultText = "ps: []";
|
|
example = literalExample ''
|
|
ps: [
|
|
ps.psycopg2
|
|
ps.docker
|
|
ps.dnspython
|
|
]
|
|
'';
|
|
description = ''
|
|
Extra python packages available at runtime
|
|
to enable additional python plugins.
|
|
'';
|
|
};
|
|
};
|
|
|
|
extraPluginPaths = mkOption {
|
|
type = types.listOf types.path;
|
|
default = [ ];
|
|
example = literalExample ''
|
|
[ "/path/to/plugins.d" ]
|
|
'';
|
|
description = ''
|
|
Extra paths to add to the netdata global "plugins directory"
|
|
option. Useful for when you want to include your own
|
|
collection scripts.
|
|
</para><para>
|
|
Details about writing a custom netdata plugin are available at:
|
|
<link xlink:href="https://docs.netdata.cloud/collectors/plugins.d/"/>
|
|
</para><para>
|
|
Cannot be combined with configText.
|
|
'';
|
|
};
|
|
|
|
config = mkOption {
|
|
type = types.attrsOf types.attrs;
|
|
default = {};
|
|
description = "netdata.conf configuration as nix attributes. cannot be combined with configText.";
|
|
example = literalExample ''
|
|
global = {
|
|
"debug log" = "syslog";
|
|
"access log" = "syslog";
|
|
"error log" = "syslog";
|
|
};
|
|
'';
|
|
};
|
|
|
|
enableAnalyticsReporting = mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
description = ''
|
|
Enable reporting of anonymous usage statistics to Netdata Inc. via either
|
|
Google Analytics (in versions prior to 1.29.4), or Netdata Inc.'s
|
|
self-hosted PostHog (in versions 1.29.4 and later).
|
|
See: <link xlink:href="https://learn.netdata.cloud/docs/agent/anonymous-statistics"/>
|
|
'';
|
|
};
|
|
};
|
|
};
|
|
|
|
config = mkIf cfg.enable {
|
|
assertions =
|
|
[ { assertion = cfg.config != {} -> cfg.configText == null ;
|
|
message = "Cannot specify both config and configText";
|
|
}
|
|
];
|
|
|
|
systemd.services.netdata = {
|
|
description = "Real time performance monitoring";
|
|
after = [ "network.target" ];
|
|
wantedBy = [ "multi-user.target" ];
|
|
path = (with pkgs; [ curl gawk iproute2 which ])
|
|
++ lib.optional cfg.python.enable (pkgs.python3.withPackages cfg.python.extraPackages)
|
|
++ lib.optional config.virtualisation.libvirtd.enable (config.virtualisation.libvirtd.package);
|
|
environment = {
|
|
PYTHONPATH = "${cfg.package}/libexec/netdata/python.d/python_modules";
|
|
} // lib.optionalAttrs (!cfg.enableAnalyticsReporting) {
|
|
DO_NOT_TRACK = "1";
|
|
};
|
|
serviceConfig = {
|
|
ExecStart = "${cfg.package}/bin/netdata -P /run/netdata/netdata.pid -D -c ${configFile}";
|
|
ExecReload = "${pkgs.util-linux}/bin/kill -s HUP -s USR1 -s USR2 $MAINPID";
|
|
TimeoutStopSec = 60;
|
|
Restart = "on-failure";
|
|
# User and group
|
|
User = cfg.user;
|
|
Group = cfg.group;
|
|
# Performance
|
|
LimitNOFILE = "30000";
|
|
# Runtime directory and mode
|
|
RuntimeDirectory = "netdata";
|
|
RuntimeDirectoryMode = "0750";
|
|
# State directory and mode
|
|
StateDirectory = "netdata";
|
|
StateDirectoryMode = "0750";
|
|
# Cache directory and mode
|
|
CacheDirectory = "netdata";
|
|
CacheDirectoryMode = "0750";
|
|
# Logs directory and mode
|
|
LogsDirectory = "netdata";
|
|
LogsDirectoryMode = "0750";
|
|
# Configuration directory and mode
|
|
ConfigurationDirectory = "netdata";
|
|
ConfigurationDirectoryMode = "0755";
|
|
# Capabilities
|
|
CapabilityBoundingSet = [
|
|
"CAP_DAC_OVERRIDE" # is required for freeipmi and slabinfo plugins
|
|
"CAP_DAC_READ_SEARCH" # is required for apps plugin
|
|
"CAP_FOWNER" # is required for freeipmi plugin
|
|
"CAP_SETPCAP" # is required for apps, perf and slabinfo plugins
|
|
"CAP_SYS_ADMIN" # is required for perf plugin
|
|
"CAP_SYS_PTRACE" # is required for apps plugin
|
|
"CAP_SYS_RESOURCE" # is required for ebpf plugin
|
|
"CAP_NET_RAW" # is required for fping app
|
|
"CAP_SYS_CHROOT" # is required for cgroups plugin
|
|
"CAP_SETUID" # is required for cgroups and cgroups-network plugins
|
|
];
|
|
# Sandboxing
|
|
ProtectSystem = "full";
|
|
ProtectHome = "read-only";
|
|
PrivateTmp = true;
|
|
ProtectControlGroups = true;
|
|
PrivateMounts = true;
|
|
};
|
|
};
|
|
|
|
systemd.enableCgroupAccounting = true;
|
|
|
|
security.wrappers = {
|
|
"apps.plugin" = {
|
|
source = "${cfg.package}/libexec/netdata/plugins.d/apps.plugin.org";
|
|
capabilities = "cap_dac_read_search,cap_sys_ptrace+ep";
|
|
owner = cfg.user;
|
|
group = cfg.group;
|
|
permissions = "u+rx,g+x,o-rwx";
|
|
};
|
|
|
|
"cgroup-network" = {
|
|
source = "${cfg.package}/libexec/netdata/plugins.d/cgroup-network.org";
|
|
capabilities = "cap_setuid+ep";
|
|
owner = cfg.user;
|
|
group = cfg.group;
|
|
permissions = "u+rx,g+x,o-rwx";
|
|
};
|
|
|
|
"perf.plugin" = {
|
|
source = "${cfg.package}/libexec/netdata/plugins.d/perf.plugin.org";
|
|
capabilities = "cap_sys_admin+ep";
|
|
owner = cfg.user;
|
|
group = cfg.group;
|
|
permissions = "u+rx,g+x,o-rwx";
|
|
};
|
|
|
|
"slabinfo.plugin" = {
|
|
source = "${cfg.package}/libexec/netdata/plugins.d/slabinfo.plugin.org";
|
|
capabilities = "cap_dac_override+ep";
|
|
owner = cfg.user;
|
|
group = cfg.group;
|
|
permissions = "u+rx,g+x,o-rwx";
|
|
};
|
|
|
|
} // optionalAttrs (cfg.package.withIpmi) {
|
|
"freeipmi.plugin" = {
|
|
source = "${cfg.package}/libexec/netdata/plugins.d/freeipmi.plugin.org";
|
|
capabilities = "cap_dac_override,cap_fowner+ep";
|
|
owner = cfg.user;
|
|
group = cfg.group;
|
|
permissions = "u+rx,g+x,o-rwx";
|
|
};
|
|
};
|
|
|
|
security.pam.loginLimits = [
|
|
{ domain = "netdata"; type = "soft"; item = "nofile"; value = "10000"; }
|
|
{ domain = "netdata"; type = "hard"; item = "nofile"; value = "30000"; }
|
|
];
|
|
|
|
users.users = optionalAttrs (cfg.user == defaultUser) {
|
|
${defaultUser} = {
|
|
group = defaultUser;
|
|
isSystemUser = true;
|
|
};
|
|
};
|
|
|
|
users.groups = optionalAttrs (cfg.group == defaultUser) {
|
|
${defaultUser} = { };
|
|
};
|
|
|
|
};
|
|
}
|