system metrics improvements #726
4 changed files with 412 additions and 104 deletions
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@ -27,6 +27,112 @@ Exposes the Garage replication factor configured on the node
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garage_replication_factor 3
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```
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#### `garage_local_disk_avail` and `garage_local_disk_total` (gauge)
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Reports the available and total disk space on each node, for data and metadata separately.
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```
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garage_local_disk_avail{volume="data"} 540341960704
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garage_local_disk_avail{volume="metadata"} 540341960704
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garage_local_disk_total{volume="data"} 763063566336
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garage_local_disk_total{volume="metadata"} 763063566336
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```
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### Cluster health status metrics
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#### `cluster_healthy` (gauge)
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Whether all storage nodes are connected (0 or 1)
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```
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cluster_healthy 0
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```
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#### `cluster_available` (gauge)
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Whether all requests can be served, even if some storage nodes are disconnected
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```
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cluster_available 1
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```
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#### `cluster_connected_nodes` (gauge)
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Number of nodes currently connected
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```
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cluster_connected_nodes 3
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```
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#### `cluster_known_nodes` (gauge)
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Number of nodes already seen once in the cluster
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```
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cluster_known_nodes 3
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```
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#### `cluster_layout_node_connected` (gauge)
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Connection status for individual nodes of the cluster layout
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```
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cluster_layout_node_connected{id="62b218d848e86a64",role_capacity="1000000000",role_gateway="0",role_zone="dc1"} 1
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cluster_layout_node_connected{id="a11c7cf18af29737",role_capacity="1000000000",role_gateway="0",role_zone="dc1"} 0
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cluster_layout_node_connected{id="a235ac7695e0c54d",role_capacity="1000000000",role_gateway="0",role_zone="dc1"} 1
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cluster_layout_node_connected{id="b10c110e4e854e5a",role_capacity="1000000000",role_gateway="0",role_zone="dc1"} 1
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```
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#### `cluster_layout_node_disconnected_time` (gauge)
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Time (in seconds) since last connection to individual nodes of the cluster layout
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```
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cluster_layout_node_disconnected_time{id="62b218d848e86a64",role_capacity="1000000000",role_gateway="0",role_zone="dc1"} 0
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cluster_layout_node_disconnected_time{id="a235ac7695e0c54d",role_capacity="1000000000",role_gateway="0",role_zone="dc1"} 0
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cluster_layout_node_disconnected_time{id="b10c110e4e854e5a",role_capacity="1000000000",role_gateway="0",role_zone="dc1"} 0
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```
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#### `cluster_storage_nodes` (gauge)
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Number of storage nodes declared in the current layout
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```
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cluster_storage_nodes 4
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```
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#### `cluster_storage_nodes_ok` (gauge)
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Number of storage nodes currently connected
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```
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cluster_storage_nodes_ok 3
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```
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#### `cluster_partitions` (gauge)
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Number of partitions in the layout (this is always 256)
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```
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cluster_partitions 256
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```
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#### `cluster_partitions_all_ok` (gauge)
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Number of partitions for which all storage nodes are connected
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```
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cluster_partitions_all_ok 64
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```
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#### `cluster_partitions_quorum` (gauge)
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Number of partitions for which we have a quorum of connected nodes and all requests can be served
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```
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cluster_partitions_quorum 256
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```
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### Metrics of the API endpoints
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#### `api_admin_request_counter` (counter)
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@ -162,6 +162,7 @@ pub async fn run_server(config_file: PathBuf, secrets: Secrets) -> Result<(), Er
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info!("Netapp exited");
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// Drop all references so that stuff can terminate properly
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garage.system.cleanup();
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drop(garage);
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// Await for all background tasks to end
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@ -3,11 +3,10 @@ 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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use arc_swap::ArcSwap;
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use arc_swap::ArcSwapOption;
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use async_trait::async_trait;
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use futures::join;
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use serde::{Deserialize, Serialize};
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@ -88,7 +87,7 @@ pub struct System {
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persist_cluster_layout: Persister<ClusterLayout>,
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persist_peer_list: Persister<PeerList>,
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local_status: ArcSwap<NodeStatus>,
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pub(crate) local_status: RwLock<NodeStatus>,
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node_status: RwLock<HashMap<Uuid, (u64, NodeStatus)>>,
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pub netapp: Arc<NetApp>,
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@ -106,10 +105,10 @@ pub struct System {
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#[cfg(feature = "kubernetes-discovery")]
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kubernetes_discovery: Option<KubernetesDiscoveryConfig>,
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metrics: SystemMetrics,
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metrics: ArcSwapOption<SystemMetrics>,
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replication_mode: ReplicationMode,
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replication_factor: usize,
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pub(crate) replication_factor: usize,
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/// The ring
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pub ring: watch::Receiver<Arc<Ring>>,
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@ -170,7 +169,7 @@ pub struct ClusterHealth {
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pub partitions_all_ok: usize,
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}
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#[derive(Debug, Clone, Copy)]
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#[derive(Debug, Clone, Copy, Eq, PartialEq)]
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pub enum ClusterHealthStatus {
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/// All nodes are available
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Healthy,
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@ -280,10 +279,8 @@ impl System {
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}
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};
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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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local_status.update_disk_usage(&config.metadata_dir, &config.data_dir);
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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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@ -357,7 +354,7 @@ impl System {
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id: netapp.id.into(),
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persist_cluster_layout,
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persist_peer_list,
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local_status: ArcSwap::new(Arc::new(local_status)),
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local_status: RwLock::new(local_status),
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node_status: RwLock::new(HashMap::new()),
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netapp: netapp.clone(),
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peering: peering.clone(),
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@ -377,14 +374,19 @@ 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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metrics,
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metrics: ArcSwapOption::new(None),
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ring,
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update_ring: Mutex::new(update_ring),
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metadata_dir: config.metadata_dir.clone(),
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data_dir: config.data_dir.clone(),
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});
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sys.system_endpoint.set_handler(sys.clone());
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let metrics = SystemMetrics::new(sys.clone());
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sys.metrics.store(Some(Arc::new(metrics)));
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Ok(sys)
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}
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@ -402,6 +404,11 @@ impl System {
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);
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}
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pub fn cleanup(&self) {
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// Break reference cycle
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self.metrics.store(None);
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}
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// ---- Administrative operations (directly available and
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// also available through RPC) ----
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@ -546,12 +553,9 @@ impl System {
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}
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};
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let hostname = self.local_status.read().unwrap().hostname.clone();
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if let Err(e) = c
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.publish_consul_service(
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self.netapp.id,
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&self.local_status.load_full().hostname,
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rpc_public_addr,
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)
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.publish_consul_service(self.netapp.id, &hostname, rpc_public_addr)
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.await
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{
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error!("Error while publishing Consul service: {}", e);
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@ -573,13 +577,8 @@ impl System {
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}
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};
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if let Err(e) = publish_kubernetes_node(
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k,
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self.netapp.id,
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&self.local_status.load_full().hostname,
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rpc_public_addr,
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)
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.await
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let hostname = self.local_status.read().unwrap().hostname.clone();
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if let Err(e) = publish_kubernetes_node(k, self.netapp.id, &hostname, rpc_public_addr).await
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{
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error!("Error while publishing node to Kubernetes: {}", e);
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}
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@ -596,15 +595,13 @@ impl System {
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}
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fn update_local_status(&self) {
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let mut new_si: NodeStatus = self.local_status.load().as_ref().clone();
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let mut local_status = self.local_status.write().unwrap();
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let ring = self.ring.borrow();
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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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local_status.cluster_layout_version = ring.layout.version;
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local_status.cluster_layout_staging_hash = ring.layout.staging_hash;
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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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local_status.update_disk_usage(&self.metadata_dir, &self.data_dir);
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}
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// --- RPC HANDLERS ---
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@ -629,7 +626,7 @@ impl System {
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from: Uuid,
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info: &NodeStatus,
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) -> Result<SystemRpc, Error> {
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let local_info = self.local_status.load();
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let local_info = self.local_status.read().unwrap();
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if local_info.replication_factor < info.replication_factor {
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error!("Some node have a higher replication factor ({}) than this one ({}). This is not supported and will lead to data corruption. Shutting down for safety.",
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@ -644,6 +641,8 @@ impl System {
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tokio::spawn(self.clone().pull_cluster_layout(from));
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}
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drop(local_info);
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self.node_status
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.write()
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.unwrap()
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@ -707,8 +706,10 @@ impl System {
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while !*stop_signal.borrow() {
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let restart_at = Instant::now() + STATUS_EXCHANGE_INTERVAL;
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// Update local node status that is exchanged.
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self.update_local_status();
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let local_status: NodeStatus = self.local_status.load().as_ref().clone();
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let local_status: NodeStatus = self.local_status.read().unwrap().clone();
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let _ = self
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.rpc
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.broadcast(
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@ -893,12 +894,7 @@ impl NodeStatus {
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}
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}
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fn update_disk_usage(
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&mut self,
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meta_dir: &Path,
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data_dir: &DataDirEnum,
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metrics: &SystemMetrics,
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) {
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fn update_disk_usage(&mut self, meta_dir: &Path, data_dir: &DataDirEnum) {
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use nix::sys::statvfs::statvfs;
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let mount_avail = |path: &Path| match statvfs(path) {
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Ok(x) => {
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@ -934,27 +930,6 @@ impl NodeStatus {
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)
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})(),
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};
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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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@ -1,32 +1,58 @@
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use std::sync::atomic::{AtomicU64, Ordering};
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use std::sync::Arc;
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use std::sync::{Arc, RwLock};
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use std::time::{Duration, Instant};
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use opentelemetry::{global, metrics::*, KeyValue};
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use crate::ring::Ring;
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use crate::system::{ClusterHealthStatus, System};
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/// TableMetrics reference all counter used for metrics
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pub struct SystemMetrics {
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// Static values
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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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// Disk space values from System::local_status
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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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// Health report from System::health()
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pub(crate) _cluster_healthy: ValueObserver<u64>,
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pub(crate) _cluster_available: ValueObserver<u64>,
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pub(crate) _known_nodes: ValueObserver<u64>,
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pub(crate) _connected_nodes: ValueObserver<u64>,
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pub(crate) _storage_nodes: ValueObserver<u64>,
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pub(crate) _storage_nodes_ok: ValueObserver<u64>,
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pub(crate) _partitions: ValueObserver<u64>,
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pub(crate) _partitions_quorum: ValueObserver<u64>,
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pub(crate) _partitions_all_ok: ValueObserver<u64>,
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// Status report for individual cluster nodes
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pub(crate) _layout_node_connected: ValueObserver<u64>,
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pub(crate) _layout_node_disconnected_time: ValueObserver<u64>,
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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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pub fn new(system: Arc<System>) -> 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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let health_cache = RwLock::new((Instant::now(), system.health()));
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let system2 = system.clone();
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let get_health = Arc::new(move || {
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{
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let cache = health_cache.read().unwrap();
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if cache.0 > Instant::now() - Duration::from_secs(1) {
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return cache.1;
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}
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}
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let health = system2.health();
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*health_cache.write().unwrap() = (Instant::now(), health);
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health
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});
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Self {
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// Static values
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_garage_build_info: meter
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.u64_value_observer("garage_build_info", move |observer| {
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observer.observe(
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@ -39,39 +65,239 @@ impl SystemMetrics {
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})
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.with_description("Garage build info")
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.init(),
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_replication_factor: meter
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_replication_factor: {
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let replication_factor = system.replication_factor;
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meter
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.u64_value_observer("garage_replication_factor", move |observer| {
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observer.observe(replication_factor as u64, &[])
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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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.init()
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},
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// Disk space values from System::local_status
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_disk_avail: {
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let system = system.clone();
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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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let st = system.local_status.read().unwrap();
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if let Some((avail, _total)) = st.data_disk_avail {
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observer.observe(avail, &[KeyValue::new("volume", "data")]);
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}
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if let Some((avail, _total)) = st.meta_disk_avail {
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observer.observe(avail, &[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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.init()
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},
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_disk_total: {
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let system = system.clone();
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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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};
|
||||
let st = system.local_status.read().unwrap();
|
||||
if let Some((_avail, total)) = st.data_disk_avail {
|
||||
observer.observe(total, &[KeyValue::new("volume", "data")]);
|
||||
}
|
||||
if let Some((_avail, total)) = st.meta_disk_avail {
|
||||
observer.observe(total, &[KeyValue::new("volume", "metadata")]);
|
||||
}
|
||||
})
|
||||
.with_description("Garage total disk space on each node")
|
||||
.init(),
|
||||
values,
|
||||
.init()
|
||||
},
|
||||
|
||||
// Health report from System::()
|
||||
_cluster_healthy: {
|
||||
let get_health = get_health.clone();
|
||||
meter
|
||||
.u64_value_observer("cluster_healthy", move |observer| {
|
||||
let h = get_health();
|
||||
if h.status == ClusterHealthStatus::Healthy {
|
||||
observer.observe(1, &[]);
|
||||
} else {
|
||||
observer.observe(0, &[]);
|
||||
}
|
||||
})
|
||||
.with_description("Whether all storage nodes are connected")
|
||||
.init()
|
||||
},
|
||||
_cluster_available: {
|
||||
let get_health = get_health.clone();
|
||||
meter.u64_value_observer("cluster_available", move |observer| {
|
||||
let h = get_health();
|
||||
if h.status != ClusterHealthStatus::Unavailable {
|
||||
observer.observe(1, &[]);
|
||||
} else {
|
||||
observer.observe(0, &[]);
|
||||
}
|
||||
})
|
||||
.with_description("Whether all requests can be served, even if some storage nodes are disconnected")
|
||||
.init()
|
||||
},
|
||||
_known_nodes: {
|
||||
let get_health = get_health.clone();
|
||||
meter
|
||||
.u64_value_observer("cluster_known_nodes", move |observer| {
|
||||
let h = get_health();
|
||||
observer.observe(h.known_nodes as u64, &[]);
|
||||
})
|
||||
.with_description("Number of nodes already seen once in the cluster")
|
||||
.init()
|
||||
},
|
||||
_connected_nodes: {
|
||||
let get_health = get_health.clone();
|
||||
meter
|
||||
.u64_value_observer("cluster_connected_nodes", move |observer| {
|
||||
let h = get_health();
|
||||
observer.observe(h.connected_nodes as u64, &[]);
|
||||
})
|
||||
.with_description("Number of nodes currently connected")
|
||||
.init()
|
||||
},
|
||||
_storage_nodes: {
|
||||
let get_health = get_health.clone();
|
||||
meter
|
||||
.u64_value_observer("cluster_storage_nodes", move |observer| {
|
||||
let h = get_health();
|
||||
observer.observe(h.storage_nodes as u64, &[]);
|
||||
})
|
||||
.with_description("Number of storage nodes declared in the current layout")
|
||||
.init()
|
||||
},
|
||||
_storage_nodes_ok: {
|
||||
let get_health = get_health.clone();
|
||||
meter
|
||||
.u64_value_observer("cluster_storage_nodes_ok", move |observer| {
|
||||
let h = get_health();
|
||||
observer.observe(h.storage_nodes_ok as u64, &[]);
|
||||
})
|
||||
.with_description("Number of storage nodes currently connected")
|
||||
.init()
|
||||
},
|
||||
_partitions: {
|
||||
let get_health = get_health.clone();
|
||||
meter
|
||||
.u64_value_observer("cluster_partitions", move |observer| {
|
||||
let h = get_health();
|
||||
observer.observe(h.partitions as u64, &[]);
|
||||
})
|
||||
.with_description("Number of partitions in the layout")
|
||||
.init()
|
||||
},
|
||||
_partitions_quorum: {
|
||||
let get_health = get_health.clone();
|
||||
meter
|
||||
.u64_value_observer("cluster_partitions_quorum", move |observer| {
|
||||
let h = get_health();
|
||||
observer.observe(h.partitions_quorum as u64, &[]);
|
||||
})
|
||||
.with_description(
|
||||
"Number of partitions for which we have a quorum of connected nodes",
|
||||
)
|
||||
.init()
|
||||
},
|
||||
_partitions_all_ok: {
|
||||
let get_health = get_health.clone();
|
||||
meter
|
||||
.u64_value_observer("cluster_partitions_all_ok", move |observer| {
|
||||
let h = get_health();
|
||||
observer.observe(h.partitions_all_ok as u64, &[]);
|
||||
})
|
||||
.with_description(
|
||||
"Number of partitions for which all storage nodes are connected",
|
||||
)
|
||||
.init()
|
||||
},
|
||||
|
||||
// Status report for individual cluster nodes
|
||||
_layout_node_connected: {
|
||||
let system = system.clone();
|
||||
meter
|
||||
.u64_value_observer("cluster_layout_node_connected", move |observer| {
|
||||
let ring: Arc<Ring> = system.ring.borrow().clone();
|
||||
let nodes = system.get_known_nodes();
|
||||
for (id, _, config) in ring.layout.roles.items().iter() {
|
||||
if let Some(role) = &config.0 {
|
||||
let mut kv = vec![
|
||||
KeyValue::new("id", format!("{:?}", id)),
|
||||
KeyValue::new("role_zone", role.zone.clone()),
|
||||
];
|
||||
match role.capacity {
|
||||
Some(cap) => {
|
||||
kv.push(KeyValue::new("role_capacity", cap as i64));
|
||||
kv.push(KeyValue::new("role_gateway", 0));
|
||||
}
|
||||
None => {
|
||||
kv.push(KeyValue::new("role_gateway", 1));
|
||||
}
|
||||
}
|
||||
|
||||
let value;
|
||||
if let Some(node) = nodes.iter().find(|n| n.id == *id) {
|
||||
value = if node.is_up { 1 } else { 0 };
|
||||
// TODO: if we add address and hostname, and those change, we
|
||||
// get duplicate metrics, due to bad otel aggregation :(
|
||||
// Can probably be fixed when we upgrade opentelemetry
|
||||
// kv.push(KeyValue::new("address", node.addr.to_string()));
|
||||
// kv.push(KeyValue::new(
|
||||
// "hostname",
|
||||
// node.status.hostname.clone(),
|
||||
// ));
|
||||
} else {
|
||||
value = 0;
|
||||
}
|
||||
|
||||
observer.observe(value, &kv);
|
||||
}
|
||||
}
|
||||
})
|
||||
.with_description("Connection status for nodes in the cluster layout")
|
||||
.init()
|
||||
},
|
||||
_layout_node_disconnected_time: {
|
||||
let system = system.clone();
|
||||
meter
|
||||
.u64_value_observer("cluster_layout_node_disconnected_time", move |observer| {
|
||||
let ring: Arc<Ring> = system.ring.borrow().clone();
|
||||
let nodes = system.get_known_nodes();
|
||||
for (id, _, config) in ring.layout.roles.items().iter() {
|
||||
if let Some(role) = &config.0 {
|
||||
let mut kv = vec![
|
||||
KeyValue::new("id", format!("{:?}", id)),
|
||||
KeyValue::new("role_zone", role.zone.clone()),
|
||||
];
|
||||
match role.capacity {
|
||||
Some(cap) => {
|
||||
kv.push(KeyValue::new("role_capacity", cap as i64));
|
||||
kv.push(KeyValue::new("role_gateway", 0));
|
||||
}
|
||||
None => {
|
||||
kv.push(KeyValue::new("role_gateway", 1));
|
||||
}
|
||||
}
|
||||
|
||||
if let Some(node) = nodes.iter().find(|n| n.id == *id) {
|
||||
// TODO: see comment above
|
||||
// kv.push(KeyValue::new("address", node.addr.to_string()));
|
||||
// kv.push(KeyValue::new(
|
||||
// "hostname",
|
||||
// node.status.hostname.clone(),
|
||||
// ));
|
||||
if node.is_up {
|
||||
observer.observe(0, &kv);
|
||||
} else if let Some(secs) = node.last_seen_secs_ago {
|
||||
observer.observe(secs, &kv);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
})
|
||||
.with_description(
|
||||
"Time (in seconds) since last connection to nodes in the cluster layout",
|
||||
)
|
||||
.init()
|
||||
},
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue