forked from Deuxfleurs/garage
Add local disk usage to exported prometheus metrics
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3 changed files with 75 additions and 12 deletions
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@ -3,6 +3,9 @@
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#[macro_use]
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extern crate tracing;
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mod metrics;
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mod system_metrics;
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#[cfg(feature = "consul-discovery")]
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mod consul;
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#[cfg(feature = "kubernetes-discovery")]
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@ -13,9 +16,6 @@ pub mod replication_mode;
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pub mod ring;
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pub mod system;
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mod metrics;
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pub mod rpc_helper;
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pub use rpc_helper::*;
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pub mod system_metrics;
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@ -3,6 +3,7 @@ use std::collections::HashMap;
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use std::io::{Read, Write};
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use std::net::{IpAddr, SocketAddr};
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use std::path::{Path, PathBuf};
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use std::sync::atomic::Ordering;
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use std::sync::{Arc, RwLock};
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use std::time::{Duration, Instant};
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@ -38,7 +39,6 @@ use crate::replication_mode::*;
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use crate::ring::*;
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use crate::rpc_helper::*;
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#[cfg(feature = "metrics")]
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use crate::system_metrics::*;
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const DISCOVERY_INTERVAL: Duration = Duration::from_secs(60);
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@ -106,7 +106,7 @@ pub struct System {
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consul_discovery: Option<ConsulDiscovery>,
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#[cfg(feature = "kubernetes-discovery")]
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kubernetes_discovery: Option<KubernetesDiscoveryConfig>,
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#[cfg(feature = "metrics")]
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metrics: SystemMetrics,
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replication_mode: ReplicationMode,
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@ -281,12 +281,11 @@ impl System {
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}
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};
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let mut local_status = NodeStatus::initial(replication_factor, &cluster_layout);
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local_status.update_disk_usage(&config.metadata_dir, &config.data_dir);
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#[cfg(feature = "metrics")]
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let metrics = SystemMetrics::new(replication_factor);
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let mut local_status = NodeStatus::initial(replication_factor, &cluster_layout);
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local_status.update_disk_usage(&config.metadata_dir, &config.data_dir, &metrics);
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let ring = Ring::new(cluster_layout, replication_factor);
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let (update_ring, ring) = watch::channel(Arc::new(ring));
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@ -377,7 +376,6 @@ impl System {
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consul_discovery,
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#[cfg(feature = "kubernetes-discovery")]
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kubernetes_discovery: config.kubernetes_discovery.clone(),
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#[cfg(feature = "metrics")]
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metrics,
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ring,
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@ -601,7 +599,7 @@ impl System {
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new_si.cluster_layout_version = ring.layout.version;
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new_si.cluster_layout_staging_hash = ring.layout.staging_hash;
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new_si.update_disk_usage(&self.metadata_dir, &self.data_dir);
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new_si.update_disk_usage(&self.metadata_dir, &self.data_dir, &self.metrics);
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self.local_status.swap(Arc::new(new_si));
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}
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@ -892,7 +890,7 @@ impl NodeStatus {
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}
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}
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fn update_disk_usage(&mut self, meta_dir: &Path, data_dir: &Path) {
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fn update_disk_usage(&mut self, meta_dir: &Path, data_dir: &Path, metrics: &SystemMetrics) {
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use systemstat::{Platform, System};
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let mounts = System::new().mounts().unwrap_or_default();
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@ -906,6 +904,27 @@ impl NodeStatus {
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self.meta_disk_avail = mount_avail(meta_dir);
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self.data_disk_avail = mount_avail(data_dir);
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if let Some((avail, total)) = self.meta_disk_avail {
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metrics
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.values
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.meta_disk_avail
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.store(avail, Ordering::Relaxed);
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metrics
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.values
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.meta_disk_total
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.store(total, Ordering::Relaxed);
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}
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if let Some((avail, total)) = self.data_disk_avail {
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metrics
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.values
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.data_disk_avail
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.store(avail, Ordering::Relaxed);
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metrics
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.values
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.data_disk_total
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.store(total, Ordering::Relaxed);
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}
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}
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}
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@ -1,14 +1,31 @@
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use std::sync::atomic::{AtomicU64, Ordering};
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use std::sync::Arc;
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use opentelemetry::{global, metrics::*, KeyValue};
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/// TableMetrics reference all counter used for metrics
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pub struct SystemMetrics {
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pub(crate) _garage_build_info: ValueObserver<u64>,
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pub(crate) _replication_factor: ValueObserver<u64>,
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pub(crate) _disk_avail: ValueObserver<u64>,
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pub(crate) _disk_total: ValueObserver<u64>,
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pub(crate) values: Arc<SystemMetricsValues>,
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}
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#[derive(Default)]
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pub struct SystemMetricsValues {
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pub(crate) data_disk_total: AtomicU64,
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pub(crate) data_disk_avail: AtomicU64,
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pub(crate) meta_disk_total: AtomicU64,
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pub(crate) meta_disk_avail: AtomicU64,
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}
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impl SystemMetrics {
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pub fn new(replication_factor: usize) -> Self {
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let meter = global::meter("garage_system");
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let values = Arc::new(SystemMetricsValues::default());
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let values1 = values.clone();
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let values2 = values.clone();
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Self {
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_garage_build_info: meter
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.u64_value_observer("garage_build_info", move |observer| {
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@ -28,6 +45,33 @@ impl SystemMetrics {
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})
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.with_description("Garage replication factor setting")
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.init(),
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_disk_avail: meter
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.u64_value_observer("garage_local_disk_avail", move |observer| {
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match values1.data_disk_avail.load(Ordering::Relaxed) {
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0 => (),
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x => observer.observe(x, &[KeyValue::new("volume", "data")]),
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};
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match values1.meta_disk_avail.load(Ordering::Relaxed) {
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0 => (),
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x => observer.observe(x, &[KeyValue::new("volume", "metadata")]),
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};
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})
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.with_description("Garage available disk space on each node")
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.init(),
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_disk_total: meter
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.u64_value_observer("garage_local_disk_total", move |observer| {
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match values2.data_disk_total.load(Ordering::Relaxed) {
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0 => (),
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x => observer.observe(x, &[KeyValue::new("volume", "data")]),
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};
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match values2.meta_disk_total.load(Ordering::Relaxed) {
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0 => (),
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x => observer.observe(x, &[KeyValue::new("volume", "metadata")]),
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};
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})
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.with_description("Garage total disk space on each node")
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.init(),
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values,
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}
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}
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}
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