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provision grafana datasources and some dashboards (#23)

fixes #22 

This commit introduces:
- A few more optional options for the monitoring module, in particular
an SMTP option to setup sending alerts with an STMP server.
- 2 required options for adding a secure key for signing and for an
initial admin password. The latter is nice because at least you can
choose securely the initial admin password instead of it being just
"admin", adding a bit more security to the install process.
- Provisioning Grafana with dashboards, datasources, alerts, contact
points and notification policies.
- Documentation for monitoring in
[docs/blocks/monitoring.md](docs/blocks/monitoring.md).
- A NixOS test that makes sure provisioning did go well as expected.
This commit is contained in:
Pierre Penninckx 2023-11-26 09:56:08 -08:00 committed by GitHub
parent d3a507d33c
commit 7d9dedb845
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
15 changed files with 1950 additions and 60 deletions

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@ -326,43 +326,7 @@ See the [`ldap.nix`](./modules/ldap.nix) and [`authelia.nix`](./modules/authelia
### Deploy the full Grafana, Prometheus and Loki suite
This is not a prerequisite for anything and could be enabled just for debugging.
```nix
shb.monitoring = {
enable = true;
subdomain = "grafana";
inherit domain;
};
```
With that, Grafana, Prometheus, Loki and Promtail are setup! You can access `Grafana` at
`grafana.example.com`.
A few Prometheus metrics scrapers are setup automatically:
- node - cpu, memory, disk I/O, network I/O and a few others of the computer
- smartctl - hard drive health
- prometheus_internal - scraping jobs health
- nginx
- dnsmasq (if the service is enabled)
The following Loki logs scraper is setup automatically:
- systemd journal
I intend to provide more options so that you could for example tweak data retention.
Also, since all logs are now stored in Loki, you can probably reduce the systemd journal retention
time with:
```nix
# See https://www.freedesktop.org/software/systemd/man/journald.conf.html#SystemMaxUse=
services.journald.extraConfig = ''
SystemMaxUse=2G
SystemKeepFree=4G
SystemMaxFileSize=100M
MaxFileSec=day
'';
```
See [docs/blocks/monitoring.md](docs/blocks/monitoring.md).
### Set up network tunnel with VPN and Proxy

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118
docs/blocks/monitoring.md Normal file
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@ -0,0 +1,118 @@
# Monitoring Block
This block sets up the monitoring stack for Self Host Blocks. It is composed of:
- Grafana as the dashboard frontend.
- Prometheus as the database for metrics.
- Loki as the database for logs.
## Configuration
```nix
shb.monitoring = {
enable = true;
subdomain = "grafana";
inherit domain;
contactPoints = [ "me@example.com" ];
adminPasswordFile = config.sops.secrets."monitoring/admin_password".path;
secretKeyFile = config.sops.secrets."monitoring/secret_key".path;
};
sops.secrets."monitoring/admin_password" = {
sopsFile = ./secrets.yaml;
mode = "0400";
owner = "grafana";
group = "grafana";
restartUnits = [ "grafana.service" ];
};
sops.secrets."monitoring/secret_key" = {
sopsFile = ./secrets.yaml;
mode = "0400";
owner = "grafana";
group = "grafana";
restartUnits = [ "grafana.service" ];
};
```
With that, Grafana, Prometheus, Loki and Promtail are setup! You can access `Grafana` at
`grafana.example.com` with user `admin` and password ``.
I recommend adding a STMP server configuration so you receive alerts by email:
```nix
shb.monitoring.smtp = {
from_address = "grafana@$example.com";
from_name = "Grafana";
host = "smtp.mailgun.org";
port = 587;
username = "postmaster@mg.example.com";
passwordFile = config.sops.secrets."monitoring/smtp".path;
};
sops.secrets."monitoring/secret_key" = {
sopsFile = ./secrets.yaml;
mode = "0400";
owner = "grafana";
group = "grafana";
restartUnits = [ "grafana.service" ];
};
```
Since all logs are now stored in Loki, you can probably reduce the systemd journal retention
time with:
```nix
# See https://www.freedesktop.org/software/systemd/man/journald.conf.html#SystemMaxUse=
services.journald.extraConfig = ''
SystemMaxUse=2G
SystemKeepFree=4G
SystemMaxFileSize=100M
MaxFileSec=day
'';
```
## Provisioning
Self Host Blocks will create automatically the following resources:
- For Grafana:
- datasources
- dashboards
- contact points
- notification policies
- alerts
- For Prometheus, the following exporters and related scrapers:
- node
- smartctl
- nginx
- For Loki, the following exporters and related scrapers:
- systemd
Those resources are namespaced as appropriate under the Self Host Blocks namespace:
![](../assets/monitoring_grafana_folder.png)
## Errors Dashboard
This dashboard is meant to be the first stop to understand why a service is misbehaving.
![](../assets/monitoring_grafana_dashboards_Errors_1.png)
![](../assets/monitoring_grafana_dashboards_Errors_2.png)
The yellow and red dashed vertical bars correspond to the [Requests Error Budget
Alert](#requests-error-budget-alert) firing.
## Performance Dashboard
This dashboard is meant to be the first stop to understand why a service is performing poorly.
![](../assets/monitoring_grafana_dashboards_Performance_1.png)
![](../assets/monitoring_grafana_dashboards_Performance_2.png)
## Requests Error Budget Alert
This alert will fire when the ratio between number of requests getting a 5XX response from a service
and the total requests to that service exceeds 1%.
![](../assets/monitoring_grafana_alert_rules_5xx_1.png)
![](../assets/monitoring_grafana_alert_rules_5xx_2.png)

View file

@ -49,6 +49,13 @@
flattenAttrs = root: attrset: pkgs.lib.attrsets.foldlAttrs (acc: name: value: acc // {
"${root}_${name}" = value;
}) {} attrset;
vm_test = name: path: flattenAttrs "vm_${name}" (
import path {
inherit pkgs;
inherit (pkgs) lib;
}
);
in (rec {
all = mergeTests [
modules
@ -64,7 +71,8 @@
]);
};
}
// (flattenAttrs "vm_postgresql" (import ./test/vm/postgresql.nix {inherit pkgs; inherit (pkgs) lib;}))
// (vm_test "postgresql" ./test/vm/postgresql.nix)
// (vm_test "monitoring" ./test/vm/monitoring.nix)
);
}
);

View file

@ -1,4 +1,4 @@
{ config, pkgs, lib, ... }:
{ config, options, pkgs, lib, ... }:
let
cfg = config.shb.monitoring;
@ -9,12 +9,6 @@ in
options.shb.monitoring = {
enable = lib.mkEnableOption "selfhostblocks.monitoring";
# sopsFile = lib.mkOption {
# type = lib.types.path;
# description = "Sops file location";
# example = "secrets/monitoring.yaml";
# };
subdomain = lib.mkOption {
type = lib.types.str;
description = "Subdomain under which home-assistant will be served.";
@ -27,15 +21,103 @@ in
example = "mydomain.com";
};
grafanaPort = lib.mkOption {
type = lib.types.port;
description = "Port where Grafana listens to HTTP requests.";
default = 3000;
};
prometheusPort = lib.mkOption {
type = lib.types.port;
description = "Port where Prometheus listens to HTTP requests.";
default = 3001;
};
lokiPort = lib.mkOption {
type = lib.types.port;
description = "Port where Loki listens to HTTP requests.";
default = 3002;
};
debugLog = lib.mkOption {
type = lib.types.bool;
description = "Set to true to enable debug logging of the infrastructure serving Grafana.";
default = false;
example = true;
};
orgId = lib.mkOption {
type = lib.types.int;
description = "Org ID where all self host blocks related config will be stored.";
default = 1;
};
provisionDashboards = lib.mkOption {
type = lib.types.bool;
description = "Provision Self Host Blocks dashboards under 'Self Host Blocks' folder.";
default = true;
};
contactPoints = lib.mkOption {
type = lib.types.listOf lib.types.str;
description = "List of email addresses to send alerts to";
default = [];
};
adminPasswordFile = lib.mkOption {
type = lib.types.path;
description = "File containing the initial admin password.";
};
secretKeyFile = lib.mkOption {
type = lib.types.path;
description = "File containing the secret key used for signing.";
};
smtp = lib.mkOption {
default = null;
type = lib.types.nullOr (lib.types.submodule {
options = {
from_address = lib.mkOption {
type = lib.types.str;
description = "SMTP address from which the emails originate.";
example = "vaultwarden@mydomain.com";
};
from_name = lib.mkOption {
type = lib.types.str;
description = "SMTP name from which the emails originate.";
default = "Vaultwarden";
};
host = lib.mkOption {
type = lib.types.str;
description = "SMTP host to send the emails to.";
};
port = lib.mkOption {
type = lib.types.port;
description = "SMTP port to send the emails to.";
default = 25;
};
username = lib.mkOption {
type = lib.types.str;
description = "Username to connect to the SMTP host.";
};
passwordFile = lib.mkOption {
type = lib.types.str;
description = "File containing the password to connect to the SMTP host.";
};
};
});
};
};
config = lib.mkIf cfg.enable {
assertions = [
{
assertion = (!(isNull cfg.smtp)) -> builtins.length cfg.contactPoints > 0;
message = "Must have at least one contact point for alerting";
}
];
shb.postgresql.ensures = [
{
username = "grafana";
@ -57,19 +139,119 @@ in
# password = "$__file{/run/secrets/homeassistant/dbpass}";
};
security = {
secret_key = "$__file{${cfg.secretKeyFile}}";
disable_initial_admin_creation = false; # Enable when LDAP support is configured.
admin_password = "$__file{${cfg.adminPasswordFile}}"; # Remove when LDAP support is configured.
};
server = {
http_addr = "127.0.0.1";
http_port = 3000;
http_port = cfg.grafanaPort;
domain = fqdn;
root_url = "https://${fqdn}";
router_logging = cfg.debugLog;
};
smtp = lib.mkIf (!(isNull cfg.smtp)) {
enabled = true;
inherit (cfg.smtp) from_address from_name;
host = "${cfg.smtp.host}:${toString cfg.smtp.port}";
user = cfg.smtp.username;
password = "$__file{${cfg.smtp.passwordFile}}";
};
};
};
services.grafana.provision = {
dashboards.settings = lib.mkIf cfg.provisionDashboards {
apiVersion = 1;
providers = [{
folder = "Self Host Blocks";
options.path = ./monitoring/dashboards;
allowUiUpdates = true;
disableDeletion = true;
}];
};
datasources.settings = {
apiVersion = 1;
datasources = [
{
inherit (cfg) orgId;
name = "Prometheus";
type = "prometheus";
url = "http://127.0.0.1:${toString config.services.prometheus.port}";
uid = "df80f9f5-97d7-4112-91d8-72f523a02b09";
isDefault = true;
version = 1;
}
{
inherit (cfg) orgId;
name = "Loki";
type = "loki";
url = "http://127.0.0.1:${toString config.services.loki.configuration.server.http_listen_port}";
uid = "cd6cc53e-840c-484d-85f7-96fede324006";
version = 1;
}
];
deleteDatasources = [
{
inherit (cfg) orgId;
name = "Prometheus";
}
{
inherit (cfg) orgId;
name = "Loki";
}
];
};
alerting.contactPoints.settings = {
apiVersion = 1;
contactPoints = [{
inherit (cfg) orgId;
name = "grafana-default-email";
receivers = lib.optionals ((builtins.length cfg.contactPoints) > 0) [{
uid = "sysadmin";
type = "email";
settings.addresses = lib.concatStringsSep ";" cfg.contactPoints;
}];
}];
};
alerting.policies.settings = {
apiVersion = 1;
policies = [{
inherit (cfg) orgId;
receiver = "grafana-default-email";
group_by = [ "grafana_folder" "alertname" ];
group_wait = "30s";
group_interval = "5m";
repeat_interval = "4h";
}];
# resetPolicies seems to happen after setting the above policies, effectively rolling back
# any updates.
};
alerting.rules.settings =
let
rules = builtins.fromJSON (builtins.readFile ./monitoring/rules.json);
ruleIds = map (r: r.uid) rules;
in
{
apiVersion = 1;
groups = [{
inherit (cfg) orgId;
name = "SysAdmin";
folder = "Self Host Blocks";
interval = "10m";
inherit rules;
}];
# deleteRules seems to happen after creating the above rules, effectively rolling back
# any updates.
};
};
services.prometheus = {
enable = true;
port = 3001;
port = cfg.prometheusPort;
};
services.loki = {
@ -78,7 +260,7 @@ in
configuration = {
auth_enabled = false;
server.http_listen_port = 3002;
server.http_listen_port = cfg.lokiPort;
ingester = {
lifecycler = {
@ -179,9 +361,9 @@ in
enable = true;
virtualHosts.${fqdn} = {
forceSSL = true;
sslCertificate = "/var/lib/acme/${cfg.domain}/cert.pem";
sslCertificateKey = "/var/lib/acme/${cfg.domain}/key.pem";
forceSSL = lib.mkIf config.shb.ssl.enable true;
sslCertificate = lib.mkIf config.shb.ssl.enable "/var/lib/acme/${cfg.domain}/cert.pem";
sslCertificateKey = lib.mkIf config.shb.ssl.enable "/var/lib/acme/${cfg.domain}/key.pem";
locations."/" = {
proxyPass = "http://${toString config.services.grafana.settings.server.http_addr}:${toString config.services.grafana.settings.server.http_port}";
proxyWebsockets = true;
@ -278,14 +460,5 @@ in
listenAddress = "127.0.0.1";
};
services.nginx.statusPage = lib.mkDefault config.services.nginx.enable;
# sops.secrets."grafana" = {
# inherit (cfg) sopsFile;
# mode = "0440";
# owner = "grafana";
# group = "grafana";
# # path = "${config.services.home-assistant.configDir}/secrets.yaml";
# restartUnits = [ "grafana.service" ];
# };
};
}

View file

@ -0,0 +1,782 @@
{
"annotations": {
"list": [
{
"builtIn": 1,
"datasource": {
"type": "grafana",
"uid": "-- Grafana --"
},
"enable": true,
"hide": true,
"iconColor": "rgba(0, 211, 255, 1)",
"name": "Annotations & Alerts",
"type": "dashboard"
}
]
},
"editable": true,
"fiscalYearStartMonth": 0,
"graphTooltip": 0,
"id": 8,
"links": [],
"liveNow": false,
"panels": [
{
"datasource": {
"type": "loki",
"uid": "cd6cc53e-840c-484d-85f7-96fede324006"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "palette-classic"
},
"custom": {
"axisBorderShow": false,
"axisCenteredZero": false,
"axisColorMode": "text",
"axisLabel": "",
"axisPlacement": "auto",
"barAlignment": 0,
"drawStyle": "line",
"fillOpacity": 0,
"gradientMode": "none",
"hideFrom": {
"legend": false,
"tooltip": false,
"viz": false
},
"insertNulls": false,
"lineInterpolation": "linear",
"lineWidth": 1,
"pointSize": 5,
"scaleDistribution": {
"type": "linear"
},
"showPoints": "auto",
"spanNulls": false,
"stacking": {
"group": "A",
"mode": "none"
},
"thresholdsStyle": {
"mode": "off"
}
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{
"color": "light-red",
"value": null
},
{
"color": "transparent",
"value": 0.99
}
]
},
"unit": "reqps"
},
"overrides": []
},
"gridPos": {
"h": 7,
"w": 24,
"x": 0,
"y": 0
},
"id": 12,
"links": [
{
"title": "explore",
"url": "https://grafana.tiserbox.com/explore?panes=%7B%22HWt%22:%7B%22datasource%22:%22cd6cc53e-840c-484d-85f7-96fede324006%22,%22queries%22:%5B%7B%22refId%22:%22A%22,%22expr%22:%22%7Bunit%3D%5C%22nginx.service%5C%22%7D%20%7C%20pattern%20%5C%22%3C_%3E%20%3C_%3E%20%3Cline%3E%5C%22%20%7C%20line_format%20%5C%22%7B%7B.line%7D%7D%5C%22%20%7C%20json%20%7C%20status%20%21~%20%5C%222..%5C%22%20%7C%20__error__%20%21%3D%20%5C%22JSONParserErr%5C%22%22,%22queryType%22:%22range%22,%22datasource%22:%7B%22type%22:%22loki%22,%22uid%22:%22cd6cc53e-840c-484d-85f7-96fede324006%22%7D,%22editorMode%22:%22code%22%7D%5D,%22range%22:%7B%22from%22:%22now-6h%22,%22to%22:%22now%22%7D%7D%7D&schemaVersion=1&orgId=1"
}
],
"options": {
"legend": {
"calcs": [
"mean",
"max"
],
"displayMode": "table",
"placement": "right",
"showLegend": true
},
"tooltip": {
"mode": "single",
"sort": "none"
}
},
"pluginVersion": "10.2.0",
"targets": [
{
"datasource": {
"type": "loki",
"uid": "cd6cc53e-840c-484d-85f7-96fede324006"
},
"editorMode": "code",
"expr": "sum by(server_name) (rate({unit=\"nginx.service\"} | pattern \"<_> <_> <line>\" | line_format \"{{.line}}\" | json | __error__ != \"JSONParserErr\" | server_name =~ \"[[server_name]].*\" [$__auto]))",
"legendFormat": "{{server_name}}",
"queryType": "range",
"refId": "A"
}
],
"title": "Rate of Requests",
"transformations": [
{
"id": "extractFields",
"options": {
"replace": true,
"source": "Line"
}
},
{
"id": "organize",
"options": {
"excludeByName": {},
"indexByName": {
"body_bytes_sent": 9,
"bytes_sent": 8,
"gzip_ration": 11,
"post": 12,
"referrer": 10,
"remote_addr": 3,
"remote_user": 6,
"request": 4,
"request_length": 7,
"request_time": 15,
"server_name": 2,
"status": 1,
"time_local": 0,
"upstream_addr": 13,
"upstream_connect_time": 17,
"upstream_header_time": 18,
"upstream_response_time": 16,
"upstream_status": 14,
"user_agent": 5
},
"renameByName": {}
}
}
],
"type": "timeseries"
},
{
"datasource": {
"type": "loki",
"uid": "cd6cc53e-840c-484d-85f7-96fede324006"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "palette-classic"
},
"custom": {
"axisBorderShow": false,
"axisCenteredZero": false,
"axisColorMode": "text",
"axisLabel": "",
"axisPlacement": "auto",
"barAlignment": 0,
"drawStyle": "line",
"fillOpacity": 0,
"gradientMode": "none",
"hideFrom": {
"legend": false,
"tooltip": false,
"viz": false
},
"insertNulls": false,
"lineInterpolation": "linear",
"lineWidth": 1,
"pointSize": 5,
"scaleDistribution": {
"type": "linear"
},
"showPoints": "auto",
"spanNulls": false,
"stacking": {
"group": "A",
"mode": "none"
},
"thresholdsStyle": {
"mode": "dashed+area"
}
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{
"color": "light-red",
"value": null
},
{
"color": "transparent",
"value": 0.99
}
]
},
"unit": "percentunit"
},
"overrides": []
},
"gridPos": {
"h": 7,
"w": 12,
"x": 0,
"y": 7
},
"id": 9,
"links": [
{
"title": "explore",
"url": "https://grafana.tiserbox.com/explore?panes=%7B%22HWt%22:%7B%22datasource%22:%22cd6cc53e-840c-484d-85f7-96fede324006%22,%22queries%22:%5B%7B%22refId%22:%22A%22,%22expr%22:%22%7Bunit%3D%5C%22nginx.service%5C%22%7D%20%7C%20pattern%20%5C%22%3C_%3E%20%3C_%3E%20%3Cline%3E%5C%22%20%7C%20line_format%20%5C%22%7B%7B.line%7D%7D%5C%22%20%7C%20json%20%7C%20status%20%21~%20%5C%222..%5C%22%20%7C%20__error__%20%21%3D%20%5C%22JSONParserErr%5C%22%22,%22queryType%22:%22range%22,%22datasource%22:%7B%22type%22:%22loki%22,%22uid%22:%22cd6cc53e-840c-484d-85f7-96fede324006%22%7D,%22editorMode%22:%22code%22%7D%5D,%22range%22:%7B%22from%22:%22now-6h%22,%22to%22:%22now%22%7D%7D%7D&schemaVersion=1&orgId=1"
}
],
"options": {
"legend": {
"calcs": [
"lastNotNull",
"min"
],
"displayMode": "table",
"placement": "right",
"showLegend": true
},
"tooltip": {
"mode": "single",
"sort": "none"
}
},
"pluginVersion": "10.2.0",
"targets": [
{
"datasource": {
"type": "loki",
"uid": "cd6cc53e-840c-484d-85f7-96fede324006"
},
"editorMode": "code",
"expr": "(sum by(server_name) (count_over_time({unit=\"nginx.service\"} | pattern \"<_> <_> <line>\" | line_format \"{{.line}}\" | json | __error__ != \"JSONParserErr\" | status =~ \"[1234]..\" | server_name =~ \"[[server_name]].*\" [7d])) / sum by(server_name) (count_over_time({unit=\"nginx.service\"} | pattern \"<_> <_> <line>\" | line_format \"{{.line}}\" | json | __error__ != \"JSONParserErr\" | server_name =~ \"[[server_name]].*\" [7d])))",
"legendFormat": "{{server_name}}",
"queryType": "range",
"refId": "A"
}
],
"title": "5XX Requests Error Budgets",
"transformations": [
{
"id": "extractFields",
"options": {
"replace": true,
"source": "Line"
}
},
{
"id": "organize",
"options": {
"excludeByName": {},
"indexByName": {
"body_bytes_sent": 9,
"bytes_sent": 8,
"gzip_ration": 11,
"post": 12,
"referrer": 10,
"remote_addr": 3,
"remote_user": 6,
"request": 4,
"request_length": 7,
"request_time": 15,
"server_name": 2,
"status": 1,
"time_local": 0,
"upstream_addr": 13,
"upstream_connect_time": 17,
"upstream_header_time": 18,
"upstream_response_time": 16,
"upstream_status": 14,
"user_agent": 5
},
"renameByName": {}
}
}
],
"type": "timeseries"
},
{
"datasource": {
"type": "loki",
"uid": "cd6cc53e-840c-484d-85f7-96fede324006"
},
"fieldConfig": {
"defaults": {
"color": {
"mode": "palette-classic"
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"expr": "{unit=\"nginx.service\"} | pattern \"<_> <_> <line>\" | line_format \"{{.line}}\" | json | __error__ != \"JSONParserErr\" | request_time > 500",
"legendFormat": "",
"queryType": "range",
"refId": "A"
}
],
"title": "Slow Queries",
"transformations": [
{
"id": "extractFields",
"options": {
"keepTime": true,
"replace": true,
"source": "labels"
}
},
{
"id": "organize",
"options": {
"excludeByName": {
"body_bytes_sent": true,
"bytes_sent": true,
"gzip_ration": true,
"job": true,
"line": true,
"post": true,
"referrer": true,
"remote_addr": true,
"remote_user": true,
"request": true,
"request_length": true,
"status": true,
"time_local": true,
"unit": true,
"upstream_addr": true,
"upstream_connect_time": true,
"upstream_header_time": true,
"upstream_response_time": true,
"upstream_status": true,
"user_agent": true
},
"indexByName": {},
"renameByName": {}
}
},
{
"id": "convertFieldType",
"options": {
"conversions": [
{
"dateFormat": "",
"destinationType": "number",
"targetField": "request_time"
}
],
"fields": {}
}
},
{
"id": "partitionByValues",
"options": {
"fields": [
"server_name"
]
}
},
{
"id": "renameByRegex",
"options": {
"regex": "request_time (.*)",
"renamePattern": "$1"
}
}
],
"type": "timeseries"
},
{
"collapsed": false,
"gridPos": {
"h": 1,
"w": 24,
"x": 0,
"y": 34
},
"id": 7,
"panels": [],
"title": "Databases",
"type": "row"
},
{
"datasource": {
"type": "loki",
"uid": "cd6cc53e-840c-484d-85f7-96fede324006"
},
"fieldConfig": {
"defaults": {
"custom": {
"align": "auto",
"cellOptions": {
"type": "auto"
},
"inspect": false
},
"mappings": [],
"thresholds": {
"mode": "absolute",
"steps": [
{
"color": "green"
},
{
"color": "red",
"value": 80
}
]
}
},
"overrides": [
{
"matcher": {
"id": "byName",
"options": "duration_ms"
},
"properties": [
{
"id": "custom.width",
"value": 100
}
]
},
{
"matcher": {
"id": "byName",
"options": "unit"
},
"properties": [
{
"id": "custom.width",
"value": 150
}
]
}
]
},
"gridPos": {
"h": 8,
"w": 24,
"x": 0,
"y": 35
},
"id": 6,
"links": [
{
"title": "explore",
"url": "https://grafana.tiserbox.com/explore?panes=%7B%22HWt%22:%7B%22datasource%22:%22cd6cc53e-840c-484d-85f7-96fede324006%22,%22queries%22:%5B%7B%22refId%22:%22A%22,%22expr%22:%22%7Bunit%3D%5C%22nginx.service%5C%22%7D%20%7C%20pattern%20%5C%22%3C_%3E%20%3C_%3E%20%3Cline%3E%5C%22%20%7C%20line_format%20%5C%22%7B%7B.line%7D%7D%5C%22%20%7C%20json%20%7C%20status%20%21~%20%5C%222..%5C%22%20%7C%20__error__%20%21%3D%20%5C%22JSONParserErr%5C%22%22,%22queryType%22:%22range%22,%22datasource%22:%7B%22type%22:%22loki%22,%22uid%22:%22cd6cc53e-840c-484d-85f7-96fede324006%22%7D,%22editorMode%22:%22code%22%7D%5D,%22range%22:%7B%22from%22:%22now-6h%22,%22to%22:%22now%22%7D%7D%7D&schemaVersion=1&orgId=1"
}
],
"options": {
"cellHeight": "sm",
"footer": {
"countRows": false,
"fields": "",
"reducer": [
"sum"
],
"show": false
},
"showHeader": true
},
"pluginVersion": "10.2.0",
"targets": [
{
"datasource": {
"type": "loki",
"uid": "cd6cc53e-840c-484d-85f7-96fede324006"
},
"editorMode": "code",
"expr": "{unit=\"postgresql.service\"} | regexp \".*duration: (?P<duration_ms>[0-9.]+) ms (?P<statement>.*)\" | duration_ms > 500 | __error__ != \"LabelFilterErr\"",
"queryType": "range",
"refId": "A"
}
],
"title": "Slow DB Queries",
"transformations": [
{
"id": "extractFields",
"options": {
"replace": true,
"source": "labels"
}
},
{
"id": "organize",
"options": {
"excludeByName": {
"job": true
},
"indexByName": {
"duration_ms": 0,
"job": 1,
"statement": 3,
"unit": 2
},
"renameByName": {}
}
}
],
"type": "table"
}
],
"refresh": "",
"schemaVersion": 38,
"tags": [],
"templating": {
"list": [
{
"current": {
"selected": false,
"text": "0",
"value": "0"
},
"datasource": {
"type": "prometheus",
"uid": "df80f9f5-97d7-4112-91d8-72f523a02b09"
},
"definition": "label_values(node_cpu_seconds_total,cpu)",
"hide": 2,
"includeAll": true,
"multi": false,
"name": "cpu",
"options": [],
"query": {
"qryType": 1,
"query": "label_values(node_cpu_seconds_total,cpu)",
"refId": "PrometheusVariableQueryEditor-VariableQuery"
},
"refresh": 1,
"regex": "",
"skipUrlSync": false,
"sort": 3,
"type": "query"
}
]
},
"time": {
"from": "now-6h",
"to": "now"
},
"timepicker": {},
"timezone": "",
"title": "Performance",
"uid": "e01156bf-cdba-42eb-9845-a401dd634d41",
"version": 25,
"weekStart": ""
}

View file

@ -0,0 +1,131 @@
[
{
"uid": "f5246fa3-163f-4eae-9e1d-5b0fe2af0509",
"title": "5XX Requests Error Budgets Under 99%",
"condition": "threshold",
"data": [
{
"refId": "A",
"queryType": "range",
"relativeTimeRange": {
"from": 21600,
"to": 0
},
"datasourceUid": "cd6cc53e-840c-484d-85f7-96fede324006",
"model": {
"datasource": {
"type": "loki",
"uid": "cd6cc53e-840c-484d-85f7-96fede324006"
},
"editorMode": "code",
"expr": "(sum by(server_name) (count_over_time({unit=\"nginx.service\"} | pattern \"<_> <_> <line>\" | line_format \"{{.line}}\" | json | __error__ != \"JSONParserErr\" | status =~ \"[1234]..\" | server_name =~ \".*\" [7d])) / sum by(server_name) (count_over_time({unit=\"nginx.service\"} | pattern \"<_> <_> <line>\" | line_format \"{{.line}}\" | json | __error__ != \"JSONParserErr\" | server_name =~ \".*\" [7d])))",
"intervalMs": 1000,
"legendFormat": "{{server_name}}",
"maxDataPoints": 43200,
"queryType": "range",
"refId": "A"
}
},
{
"refId": "last",
"relativeTimeRange": {
"from": 0,
"to": 0
},
"datasourceUid": "__expr__",
"model": {
"conditions": [
{
"evaluator": {
"params": [],
"type": "gt"
},
"operator": {
"type": "and"
},
"query": {
"params": [
"B"
]
},
"reducer": {
"params": [],
"type": "last"
},
"type": "query"
}
],
"datasource": {
"type": "__expr__",
"uid": "__expr__"
},
"expression": "A",
"intervalMs": 1000,
"maxDataPoints": 43200,
"reducer": "last",
"refId": "last",
"type": "reduce"
}
},
{
"refId": "threshold",
"relativeTimeRange": {
"from": 0,
"to": 0
},
"datasourceUid": "__expr__",
"model": {
"conditions": [
{
"evaluator": {
"params": [
0.99
],
"type": "lt"
},
"operator": {
"type": "and"
},
"query": {
"params": [
"C"
]
},
"reducer": {
"params": [],
"type": "last"
},
"type": "query"
}
],
"datasource": {
"type": "__expr__",
"uid": "__expr__"
},
"expression": "last",
"intervalMs": 1000,
"maxDataPoints": 43200,
"refId": "threshold",
"type": "threshold"
}
}
],
"dasboardUid": "d66242cf-71e8-417c-8ef7-51b0741545df",
"panelId": 9,
"noDataState": "OK",
"execErrState": "Error",
"for": "20m",
"annotations": {
"__dashboardUid__": "d66242cf-71e8-417c-8ef7-51b0741545df",
"__panelId__": "9",
"description": "",
"runbook_url": "",
"summary": "The error budget for a service for the last 7 days is under 99%"
},
"labels": {
"": "",
"role": "sysadmin"
},
"isPaused": false
}
]

42
test/vm/monitoring.nix Normal file
View file

@ -0,0 +1,42 @@
{ pkgs, lib, ... }:
{
# This test, although simple, makes sure all provisioning went fine.
auth = pkgs.nixosTest {
name = "monitoring-basic";
nodes.machine = { config, pkgs, ... }: {
imports = [
{
options = {
shb.ssl.enable = lib.mkEnableOption "ssl";
};
}
../../modules/blocks/postgresql.nix
../../modules/blocks/monitoring.nix
];
shb.monitoring = {
enable = true;
subdomain = "grafana";
domain = "example.com";
grafanaPort = 3000;
adminPasswordFile = pkgs.writeText "admin_password" "securepw";
secretKeyFile = pkgs.writeText "secret_key" "secret_key";
};
};
testScript = { nodes, ... }: ''
start_all()
machine.wait_for_unit("grafana.service")
def curl_req(password, wantStatus, endpoint):
response = machine.wait_until_succeeds("curl -i http://admin:{password}@localhost:3000{endpoint}".format(password=password, endpoint=endpoint), timeout=10)
if not response.startswith("HTTP/1.1 {wantStatus}".format(wantStatus=wantStatus)):
raise Exception("Wrong status, expected {}, got {}".format(wantStatus, response[9:12]))
return response
curl_req("securepw", 200, "/api/org")
curl_req("wrong", 401, "/api/org")
'';
};
}