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monitoring: replace prometheus with victoriametrics

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VictoriaMetrics is known to be less resource intensive compared to
prometheus.

Prometheus' node_exporter is still used to scrape data from systemd,
because it is very good, but entire Prometheus scraper and data storage
is no longer necessary. The complete Node Exporter Full dashboard is
also very nice to look at :)
This commit is contained in:
Payas Relekar 2023-06-10 15:03:36 +05:30
parent 3c9fc4014b
commit 0a042d8fab
1 changed files with 4 additions and 24 deletions
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28
modules/monitoring/monitoring.nix
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@ -6,7 +6,7 @@ let
stream_parse: true
static_configs:
- targets:
- 127.0.0.1:9002
- 127.0.0.1:9100
'';
in
{
@ -14,45 +14,25 @@ in
networking.firewall.extraCommands = ''
iptables -A nixos-fw -p tcp --source 192.168.0.0/24 --dport 2342:2342 -j nixos-fw-accept
iptables -A nixos-fw -p udp --source 192.168.0.0/24 --dport 2342:2342 -j nixos-fw-accept
iptables -A nixos-fw -p tcp --source 192.168.0.0/24 --dport 10052:10052 -j nixos-fw-accept
iptables -A nixos-fw -p udp --source 192.168.0.0/24 --dport 10052:10052 -j nixos-fw-accept
'';
networking.firewall.allowedTCPPorts = [ 9100 ];
services = {
victoriametrics = {
enable = true;
};
# Collect data with conveniently declared 'scrapers'
prometheus = {
enable = true;
port = 9001;
# Enable prometheus to collect data from systemd
# Enable prometheus node_exporter
exporters = {
node = {
enable = true;
enabledCollectors = [
"systemd"
];
port = 9002;
port = 9100;
};
};
# Tell prometheus to collect data from defined exporters
# Why this is not default config, I do not know.
# Maybe this is for when exporter and scraper are on separate instances?
scrapeConfigs = [
{
job_name = "prometheus-exporters";
static_configs = [{
targets = [
"127.0.0.1:${toString config.services.prometheus.exporters.node.port}"
];
}];
}
];
};
# Show data with fancy graphs