fix(ui): swap usage chart shown twice in tabs view (#2356)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

internal/alerts/alerts_api_test.go

@@ -11,6 +11,7 @@ import (
 	"strings"
 	"sync/atomic"
 	"testing"
+	"testing/synctest"
 
 	beszelTests "github.com/henrygd/beszel/internal/tests"
 	pbTests "github.com/pocketbase/pocketbase/tests"
@@ -533,6 +534,20 @@ func TestSendTestNotification(t *testing.T) {
 
 	for _, url := range []string{localURL, "smtp://user:pass@127.0.0.1/?fromAddress=sender@example.com&toAddresses=recipient@example.com", "mqtt://127.0.0.1/topic"} {
 		scenarios = append(scenarios, beszelTests.ApiScenario{
+			BeforeTestFunc: func(tb testing.TB, _ *pbTests.TestApp, e *core.ServeEvent) {
+				if !strings.HasPrefix(url, "mqtt://") {
+					return
+				}
+				// Keep the real MQTT rejection path, but advance its library's
+				// fixed timeout using virtual time instead of waiting 10 seconds.
+				e.Router.BindFunc(func(re *core.RequestEvent) error {
+					var err error
+					synctest.Test(tb.(*testing.T), func(t *testing.T) {
+						err = re.Next()
+					})
+					return err
+				})
+			},
 			Name:            "readonly cannot send to " + url,
 			Method:          http.MethodPost,
 			URL:             "/api/beszel/test-notification",

internal/alerts/notification_client_test.go

@@ -11,6 +11,7 @@ import (
 	"strings"
 	"sync/atomic"
 	"testing"
+	"testing/synctest"
 
 	"github.com/nicholas-fedor/shoutrrr/pkg/types"
 	"golang.org/x/net/dns/dnsmessage"
@@ -178,39 +179,45 @@ func TestPublicNotificationTCP(t *testing.T) {
 	} {
 		t.Run(rawURL, func(t *testing.T) {
 			t.Parallel()
+			// MQTT waits for a fixed library timeout even after a dial failure.
+			// Virtual time preserves the full send/cleanup path without that delay.
 			t.Run("internal destination", func(t *testing.T) {
-				err := sendPublicNotification(strings.ReplaceAll(rawURL, "HOST", "127.0.0.1"), "test")
+				synctest.Test(t, func(t *testing.T) {
-				if !errors.Is(err, errInternalDestination) {
+					err := sendPublicNotification(strings.ReplaceAll(rawURL, "HOST", "127.0.0.1"), "test")
-					t.Fatalf("expected blocked destination, got %v", err)
+					if !errors.Is(err, errInternalDestination) {
-				}
+						t.Fatalf("expected blocked destination, got %v", err)
+					}
+				})
 			})
 			t.Run("public destination uses injected dialer", func(t *testing.T) {
-				var calls atomic.Int32
+				synctest.Test(t, func(t *testing.T) {
-				stopped := errors.New("test dial stopped")
+					var calls atomic.Int32
-				service, err := newPublicNotificationService(strings.ReplaceAll(rawURL, "HOST", "8.8.8.8"), types.SenderOptions{
+					stopped := errors.New("test dial stopped")
-					DialContext: func(ctx context.Context, network, address string) (net.Conn, error) {
+					service, err := newPublicNotificationService(strings.ReplaceAll(rawURL, "HOST", "8.8.8.8"), types.SenderOptions{
-						calls.Add(1)
+						DialContext: func(ctx context.Context, network, address string) (net.Conn, error) {
-						if network != "tcp" || !strings.HasPrefix(address, "8.8.8.8:") {
+							calls.Add(1)
-							t.Errorf("unexpected dial: %s %s", network, address)
+							if network != "tcp" || !strings.HasPrefix(address, "8.8.8.8:") {
-						}
+								t.Errorf("unexpected dial: %s %s", network, address)
-						if err := checkNotificationAddress(address); err != nil {
+							}
-							t.Error(err)
+							if err := checkNotificationAddress(address); err != nil {
-						}
+								t.Error(err)
-						return nil, stopped
+							}
-					},
+							return nil, stopped
+						},
+					})
+					if err != nil {
+						t.Fatal(err)
+					}
+					if closer, ok := service.(io.Closer); ok {
+						defer closer.Close()
+					}
+					if err := service.Send("test", &types.Params{}); err == nil {
+						t.Fatal("expected dial failure")
+					}
+					if calls.Load() == 0 {
+						t.Fatal("custom dialer was not used")
+					}
 				})
-				if err != nil {
-					t.Fatal(err)
-				}
-				if closer, ok := service.(io.Closer); ok {
-					defer closer.Close()
-				}
-				if err := service.Send("test", &types.Params{}); err == nil {
-					t.Fatal("expected dial failure")
-				}
-				if calls.Load() == 0 {
-					t.Fatal("custom dialer was not used")
-				}
 			})
 		})
 	}

internal/dockerfile_agent

@@ -12,7 +12,7 @@ RUN apk add --no-cache ca-certificates && update-ca-certificates
 
 # Build
 ARG TARGETOS TARGETARCH
-RUN CGO_ENABLED=0 GOGC=75 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags "-w -s" -o /agent ./internal/cmd/agent
+RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags "-w -s" -o /agent ./internal/cmd/agent
 
 RUN rm -rf /tmp/*
 

internal/dockerfile_agent_alpine

@@ -10,14 +10,14 @@ COPY . ./
 
 # Build
 ARG TARGETOS TARGETARCH
-RUN CGO_ENABLED=0 GOGC=75 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags "-w -s" -o /agent ./internal/cmd/agent
+RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags "-w -s" -o /agent ./internal/cmd/agent
 
 RUN rm -rf /tmp/*
 
 # --------------------------
 # Final image: default scratch-based agent
 # --------------------------
-FROM alpine:3.23
+FROM alpine:3.24
 COPY --from=builder /agent /agent
 
 # AMD GPU name lookup (used by agent on Linux when /usr/share/libdrm/amdgpu.ids is read)

internal/dockerfile_agent_intel

@@ -10,13 +10,13 @@ COPY . ./
 
 # Build
 ARG TARGETOS TARGETARCH
-RUN CGO_ENABLED=0 GOGC=75 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags "-w -s" -o /agent ./internal/cmd/agent
+RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags "-w -s" -o /agent ./internal/cmd/agent
 
 # --------------------------
 # Final image
 # Note: must cap_add: [CAP_PERFMON] and mount /dev/dri/ as volume
 # --------------------------
-FROM alpine:3.23
+FROM alpine:3.24
 
 COPY --from=builder /agent /agent
 

internal/dockerfile_agent_nvidia

@@ -10,7 +10,7 @@ COPY . ./
 
 # Build
 ARG TARGETOS TARGETARCH
-RUN CGO_ENABLED=0 GOGC=75 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -tags glibc -ldflags "-w -s" -o /agent ./internal/cmd/agent
+RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -tags glibc -ldflags "-w -s" -o /agent ./internal/cmd/agent
 
 # --------------------------
 # Smartmontools builder stage

internal/dockerfile_agent_nvidia_slim

@@ -17,7 +17,7 @@ RUN set -eux; \
   if [ "$TARGETARCH" = "arm" ] && [ -n "$TARGETVARIANT" ]; then \
     export GOARM="${TARGETVARIANT#v}"; \
   fi; \
-  CGO_ENABLED=0 GOGC=75 GOOS=$TARGETOS GOARCH=$TARGETARCH \
+  CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH \
     go build -tags glibc -ldflags "-w -s" -o /agent ./internal/cmd/agent
 
 # --------------------------
@@ -70,7 +70,9 @@ RUN set -eux; \
 # --------------------------
 FROM --platform=$TARGETPLATFORM debian:bookworm-slim AS zfsutils-builder
 
-RUN apt-get update && apt-get install -y --no-install-recommends \
+# zfsutils-linux is distributed in Debian's contrib component.
+RUN sed -i 's/Components: main/Components: main contrib/' /etc/apt/sources.list.d/debian.sources \
+  && apt-get update && apt-get install -y --no-install-recommends \
   zfsutils-linux \
   && rm -rf /var/lib/apt/lists/*
 

internal/dockerfile_hub

@@ -17,7 +17,7 @@ RUN update-ca-certificates
 
 # Build
 ARG TARGETOS TARGETARCH
-RUN CGO_ENABLED=0 GOGC=75 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags "-w -s" -o /beszel ./internal/cmd/hub
+RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -ldflags "-w -s" -o /beszel ./internal/cmd/hub
 
 # ? -------------------------
 FROM scratch

internal/hub/agent_connect_test.go

@@ -978,11 +978,18 @@ func TestAgentWebSocketIntegration(t *testing.T) {
 				}
 			}
 
-			// Verify system status
+			// A connected WebSocket does not mean the hub has finished verifying
-			updatedSystemRecord, err := testApp.FindRecordById("systems", systemRecord.Id)
+			// the agent and updating the system. Wait for the database state rather
-			require.NoError(t, err)
+			// than assuming that work completes within a fixed sleep under load.
-			status := updatedSystemRecord.GetString("status")
+			var status string
-			assert.Equal(t, tc.expectSystemStatus, status, "System status should match expected value")
+			require.EventuallyWithT(t, func(c *assert.CollectT) {
+				updatedSystemRecord, err := testApp.FindRecordById("systems", systemRecord.Id)
+				if !assert.NoError(c, err) {
+					return
+				}
+				status = updatedSystemRecord.GetString("status")
+				assert.Equal(c, tc.expectSystemStatus, status, "System status should match expected value")
+			}, 5*time.Second, 20*time.Millisecond)
 
 			t.Logf("%s - System status: %s, Fingerprint: %s", tc.description, status, finalFingerprint)
 		})
@@ -1142,42 +1149,43 @@ func TestMultipleSystemsWithSameUniversalToken(t *testing.T) {
 
 			// Verify system creation/reuse behavior
 			if tc.expectConnection {
-				// Count systems after connection
+				expectedSystemsAfter := systemsBeforeCount
-				systemsAfter, err := testApp.FindRecordsByFilter("systems", "users ~ {:userId}", "", -1, 0, map[string]any{"userId": userRecord.Id})
-				require.NoError(t, err)
-				systemsAfterCount := len(systemsAfter)
-
 				if tc.expectNewSystem {
-					// Should have created a new system
+					expectedSystemsAfter++
 					systemCount++
-					assert.Equal(t, systemsBeforeCount+1, systemsAfterCount, "Should have created a new system")
-					assert.Equal(t, systemCount, systemsAfterCount, "Total system count should match expected")
-				} else {
-					// Should have reused existing system
-					assert.Equal(t, systemsBeforeCount, systemsAfterCount, "Should not have created a new system")
-					assert.Equal(t, systemCount, systemsAfterCount, "Total system count should remain the same")
 				}
 
-				time.Sleep(20 * time.Millisecond)
+				// WebSocket connection precedes the hub's asynchronous system
+				// setup. Re-read all database state until setup is complete.
+				var systemId, status string
+				require.EventuallyWithT(t, func(c *assert.CollectT) {
+					systemsAfter, err := testApp.FindRecordsByFilter("systems", "users ~ {:userId}", "", -1, 0, map[string]any{"userId": userRecord.Id})
+					if !assert.NoError(c, err) {
+						return
+					}
+					assert.Len(c, systemsAfter, expectedSystemsAfter, "System creation/reuse should match expected behavior")
+					assert.Len(c, systemsAfter, systemCount, "Total system count should match expected")
 
-				// Verify that a fingerprint record exists for this fingerprint
+					fingerprints, err := testApp.FindRecordsByFilter("fingerprints", "token = {:token} && fingerprint = {:fingerprint}", "", -1, 0, map[string]any{
-				fingerprints, err := testApp.FindRecordsByFilter("fingerprints", "token = {:token} && fingerprint = {:fingerprint}", "", -1, 0, map[string]any{
+						"token":       universalToken,
-					"token":       universalToken,
+						"fingerprint": tc.agentFingerprint,
-					"fingerprint": tc.agentFingerprint,
+					})
-				})
+					if !assert.NoError(c, err) || !assert.Len(c, fingerprints, 1, "Should have exactly one fingerprint record for this token+fingerprint combination") {
-				require.NoError(t, err)
+						return
-				require.Len(t, fingerprints, 1, "Should have exactly one fingerprint record for this token+fingerprint combination")
+					}
 
-				fingerprint := fingerprints[0]
+					fingerprint := fingerprints[0]
-				assert.Equal(t, universalToken, fingerprint.GetString("token"), "Fingerprint should have the universal token")
+					assert.Equal(c, universalToken, fingerprint.GetString("token"), "Fingerprint should have the universal token")
-				assert.Equal(t, tc.agentFingerprint, fingerprint.GetString("fingerprint"), "Fingerprint should match agent's fingerprint")
+					assert.Equal(c, tc.agentFingerprint, fingerprint.GetString("fingerprint"), "Fingerprint should match agent's fingerprint")
 
-				// Verify system status
+					systemId = fingerprint.GetString("system")
-				systemId := fingerprint.GetString("system")
+					system, err := testApp.FindRecordById("systems", systemId)
-				system, err := testApp.FindRecordById("systems", systemId)
+					if !assert.NoError(c, err) {
-				require.NoError(t, err)
+						return
-				status := system.GetString("status")
+					}
-				assert.Equal(t, tc.expectSystemStatus, status, "System status should match expected value")
+					status = system.GetString("status")
+					assert.Equal(c, tc.expectSystemStatus, status, "System status should match expected value")
+				}, 5*time.Second, 20*time.Millisecond)
 
 				t.Logf("%s - System ID: %s, Status: %s, New System: %v", tc.description, systemId, status, tc.expectNewSystem)
 			}

internal/hub/systems/network_monitor_ssh_test.go

@@ -0,0 +1,159 @@
+//go:build testing
+
+package systems
+
+import (
+	"context"
+	"crypto/ed25519"
+	"crypto/rand"
+	"net"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/fxamacker/cbor/v2"
+	"github.com/henrygd/beszel/internal/common"
+	"github.com/henrygd/beszel/internal/entities/monitor"
+	esystem "github.com/henrygd/beszel/internal/entities/system"
+	"github.com/henrygd/beszel/internal/hub/expirymap"
+	"github.com/pocketbase/pocketbase/core"
+	"github.com/stretchr/testify/require"
+	"golang.org/x/crypto/ssh"
+)
+
+func TestSSHNetworkMonitorReconnectSync(t *testing.T) {
+	sys, app := newTestSystemWithHub(t)
+	sys.manager.zfsFetchMap = expirymap.New[zfsFetchState](time.Hour)
+	t.Cleanup(sys.manager.zfsFetchMap.StopCleaner)
+	sys.ctx = context.Background()
+	sys.Status = up
+	_, key, err := ed25519.GenerateKey(rand.Reader)
+	require.NoError(t, err)
+	signer, err := ssh.NewSignerFromKey(key)
+	require.NoError(t, err)
+	config := &ssh.ServerConfig{NoClientAuth: true, ServerVersion: "SSH-2.0-beszel_0.20.0"}
+	config.AddHostKey(signer)
+	listener, err := net.Listen("tcp", "127.0.0.1:0")
+	require.NoError(t, err)
+	t.Cleanup(func() { _ = listener.Close() })
+	sys.Host, sys.Port, err = net.SplitHostPort(listener.Addr().String())
+	require.NoError(t, err)
+	sys.manager.sshConfig = &ssh.ClientConfig{User: "test", HostKeyCallback: ssh.InsecureIgnoreHostKey(), Timeout: time.Second}
+	t.Cleanup(sys.closeSSHConnection)
+	requests := make(chan monitor.SyncRequest, 10)
+	var failSync atomic.Bool
+	go func() {
+		for {
+			conn, err := listener.Accept()
+			if err != nil {
+				return
+			}
+			go func() {
+				server, channels, reqs, err := ssh.NewServerConn(conn, config)
+				if err != nil {
+					_ = conn.Close()
+					return
+				}
+				defer server.Close()
+				go ssh.DiscardRequests(reqs)
+				for channel := range channels {
+					ch, reqs, err := channel.Accept()
+					if err != nil {
+						return
+					}
+					go func() {
+						defer ch.Close()
+						for req := range reqs {
+							if req.Type != "shell" {
+								_ = req.Reply(false, nil)
+								continue
+							}
+							_ = req.Reply(true, nil)
+							var request common.HubRequest[cbor.RawMessage]
+							if cbor.NewDecoder(ch).Decode(&request) != nil {
+								return
+							}
+							response := common.AgentResponse{}
+							switch request.Action {
+							case common.GetData:
+								response.SystemData = &esystem.CombinedData{}
+							case common.SyncNetworkMonitors:
+								var syncReq monitor.SyncRequest
+								if cbor.Unmarshal(request.Data, &syncReq) != nil {
+									return
+								}
+								requests <- syncReq
+								if failSync.Load() {
+									response.Error = "test sync failure"
+								} else {
+									response.Data, _ = cbor.Marshal(monitor.SyncResponse{})
+								}
+							}
+							_ = cbor.NewEncoder(ch).Encode(response)
+							_, _ = ch.SendRequest("exit-status", false, ssh.Marshal(struct{ Status uint32 }{0}))
+							return
+						}
+					}()
+				}
+			}()
+		}
+	}()
+	collection, err := app.FindCachedCollectionByNameOrId("network_monitors")
+	require.NoError(t, err)
+	probe := core.NewRecord(collection)
+	probe.Load(map[string]any{"system": sys.Id, "target": "localhost", "protocol": "tcp", "port": 80, "interval": 60, "enabled": true})
+	require.NoError(t, app.SaveNoValidate(probe))
+	fetch := func() {
+		t.Helper()
+		_, err := sys.fetchDataFromAgent(common.DataRequestOptions{})
+		require.NoError(t, err, "monitor sync failure must not fail stats fetching")
+	}
+	receive := func() monitor.SyncRequest {
+		t.Helper()
+		select {
+		case req := <-requests:
+			require.Equal(t, monitor.SyncActionReplace, req.Action)
+			return req
+		case <-time.After(time.Second):
+			t.Fatal("missing full monitor sync")
+			return monitor.SyncRequest{}
+		}
+	}
+	fetch()
+	require.Equal(t, probe.Id, receive().Configs[0].ID)
+	require.False(t, sys.monitorsNeedSync.Load())
+	fetch()
+	require.Empty(t, requests, "steady-state fetch must not resync")
+
+	// Simulate loss of the agent process/connection and its in-memory monitors.
+	require.NoError(t, sys.client.Load().Close())
+	fetch()
+	require.Equal(t, probe.Id, receive().Configs[0].ID)
+	require.False(t, sys.monitorsNeedSync.Load())
+
+	// Failed replacements are retried on the next successful stats fetch.
+	require.NoError(t, sys.client.Load().Close())
+	failSync.Store(true)
+	fetch()
+	receive()
+	require.True(t, sys.monitorsNeedSync.Load())
+	failSync.Store(false)
+	fetch()
+	receive()
+	require.False(t, sys.monitorsNeedSync.Load())
+
+	probe.Set("enabled", false)
+	require.NoError(t, app.SaveNoValidate(probe))
+	require.NoError(t, sys.client.Load().Close())
+	fetch()
+	require.Empty(t, receive().Configs, "empty replacement must clear stale monitors")
+}
+
+func TestPendingNetworkMonitorSyncQueryFailure(t *testing.T) {
+	sys, app := newTestSystemWithHub(t)
+	_, err := app.DB().NewQuery("DROP TABLE network_monitors").Execute()
+	require.NoError(t, err)
+	sys.monitorsNeedSync.Store(true)
+	sys.syncPendingNetworkMonitors()
+	require.True(t, sys.monitorsNeedSync.Load())
+}

internal/hub/systems/network_monitor_sync_test.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"strings"
+	"sync/atomic"
 	"testing"
 	"time"
 
@@ -13,6 +14,7 @@ import (
 	"github.com/fxamacker/cbor/v2"
 	"github.com/henrygd/beszel/internal/common"
 	"github.com/henrygd/beszel/internal/entities/monitor"
+	esystem "github.com/henrygd/beszel/internal/entities/system"
 	"github.com/henrygd/beszel/internal/hub/ws"
 	"github.com/lxzan/gws"
 	"github.com/pocketbase/pocketbase/core"
@@ -22,17 +24,31 @@ import (
 type monitorSyncClient struct {
 	gws.BuiltinEventHandler
 	requests chan common.HubRequest[monitor.SyncRequest]
+	failSync atomic.Bool
 }
 
 func (c *monitorSyncClient) OnMessage(conn *gws.Conn, message *gws.Message) {
 	defer message.Close()
-	var req common.HubRequest[monitor.SyncRequest]
+	var req common.HubRequest[cbor.RawMessage]
 	if err := cbor.Unmarshal(message.Bytes(), &req); err != nil {
 		return
 	}
-	c.requests <- req
+	resp := common.AgentResponse{Id: req.Id}
-	data, _ := cbor.Marshal(monitor.SyncResponse{})
+	if req.Action == common.GetData {
-	response, _ := cbor.Marshal(common.AgentResponse{Id: req.Id, Data: data})
+		resp.SystemData = &esystem.CombinedData{}
+	} else {
+		var data monitor.SyncRequest
+		if err := cbor.Unmarshal(req.Data, &data); err != nil {
+			return
+		}
+		c.requests <- common.HubRequest[monitor.SyncRequest]{Id: req.Id, Action: req.Action, Data: data}
+		if c.failSync.Load() {
+			resp.Error = "test sync failure"
+		} else {
+			resp.Data, _ = cbor.Marshal(monitor.SyncResponse{})
+		}
+	}
+	response, _ := cbor.Marshal(resp)
 	_ = conn.WriteMessage(gws.OpcodeBinary, response)
 }
 
@@ -57,7 +73,7 @@ func TestNetworkMonitorSyncSkipsOlderAgents(t *testing.T) {
 }
 
 func TestNetworkMonitorReconnectSync(t *testing.T) {
-	for _, change := range []string{"delete", "disable"} {
+	for _, change := range []string{"delete", "disable", "retry"} {
 		t.Run(change, func(t *testing.T) {
 			sys, app := newTestSystemWithHub(t)
 			record, err := app.FindRecordById("systems", sys.Id)
@@ -120,9 +136,33 @@ func TestNetworkMonitorReconnectSync(t *testing.T) {
 				}
 			}
 
+			client.failSync.Store(change == "retry")
 			initial := connect()
 			require.Len(t, initial.Configs, 1)
 			require.Equal(t, probe.Id, initial.Configs[0].ID)
+			if change == "retry" {
+				system, err := sm.GetSystem(sys.Id)
+				require.NoError(t, err)
+				require.Eventually(t, system.monitorsNeedSync.Load, time.Second, time.Millisecond)
+				// A second failed sync must not fail the stats fetch or clear pending state.
+				_, err = system.fetchDataFromAgent(common.DataRequestOptions{})
+				require.NoError(t, err)
+				require.True(t, system.monitorsNeedSync.Load())
+				require.Len(t, client.requests, 1)
+				<-client.requests
+				client.failSync.Store(false)
+				_, err = system.fetchDataFromAgent(common.DataRequestOptions{})
+				require.NoError(t, err)
+				require.False(t, system.monitorsNeedSync.Load())
+				require.Len(t, client.requests, 1)
+				retry := <-client.requests
+				require.Equal(t, monitor.SyncActionReplace, retry.Data.Action)
+				require.Equal(t, initial.Configs, retry.Data.Configs)
+				_, err = system.fetchDataFromAgent(common.DataRequestOptions{})
+				require.NoError(t, err)
+				require.Empty(t, client.requests, "successful sync must not repeat on every fetch")
+				return
+			}
 			require.NoError(t, sm.RemoveSystem(sys.Id))
 			if change == "delete" {
 				require.NoError(t, app.Delete(probe))

internal/hub/systems/network_monitors.go

@@ -2,6 +2,7 @@ package systems
 
 import (
 	"context"
+	"fmt"
 	"time"
 
 	"github.com/henrygd/beszel"
@@ -9,6 +10,27 @@ import (
 	"github.com/henrygd/beszel/internal/entities/monitor"
 )
 
+// syncPendingNetworkMonitors runs on WebSocket connect and after successful stats
+// fetches. Failed syncs retry on the next update without taking the system down.
+func (sys *System) syncPendingNetworkMonitors() {
+	if !sys.monitorsNeedSync.Swap(false) {
+		return
+	}
+	if err := sys.syncAllNetworkMonitors(); err != nil {
+		sys.monitorsNeedSync.Store(true)
+		sys.manager.hub.Logger().Warn("failed to sync monitors to agent", "system", sys.Id, "err", err)
+	}
+}
+
+func (sys *System) syncAllNetworkMonitors() error {
+	configs, err := sys.manager.GetMonitorConfigsForSystem(sys.Id)
+	if err != nil {
+		return fmt.Errorf("failed to load monitors: %w", err)
+	}
+	// An empty set must also replace probes retained across a disconnect.
+	return sys.SyncNetworkMonitors(configs)
+}
+
 // SyncNetworkMonitors sends monitor configurations to the agent.
 func (sys *System) SyncNetworkMonitors(configs []monitor.Config) error {
 	_, err := sys.syncNetworkMonitors(monitor.SyncRequest{Action: monitor.SyncActionReplace, Configs: configs})

internal/hub/systems/system.go

@@ -56,6 +56,9 @@ type System struct {
 	smartInterval  time.Duration              // Interval for periodic SMART data updates
 	zfsFetching    atomic.Bool                // True if ZFS pools are currently being fetched
 	zfsInterval    time.Duration              // Interval for periodic ZFS detail data updates
+
+	// A fresh connection needs a full monitor configuration sync.
+	monitorsNeedSync atomic.Bool
 	// Serialize persistence from scheduled updates and resumes through commit.
 	recordsMu sync.Mutex
 	// Protected by recordsMu; realtime reads don't consume probes.
@@ -630,7 +633,10 @@ func (sys *System) request(ctx context.Context, action common.WebSocketAction, r
 	err := sys.sshTransport.RequestWithRetry(ctx, action, req, dest, 1)
 	// Keep legacy SSH client/version fields in sync for other code paths.
 	if sys.sshTransport != nil {
-		sys.client.Store(sys.sshTransport.GetClient())
+		client := sys.sshTransport.GetClient()
+		if previous := sys.client.Swap(client); client != nil && client != previous {
+			sys.monitorsNeedSync.Store(true)
+		}
 		sys.agentVersion = sys.sshTransport.GetAgentVersion()
 	}
 	return err
@@ -688,6 +694,7 @@ func (sys *System) fetchDataFromAgent(options common.DataRequestOptions) (*syste
 	if sys.WsConn != nil && sys.WsConn.IsConnected() {
 		wsData, err := sys.fetchDataViaWebSocket(options)
 		if err == nil {
+			sys.syncPendingNetworkMonitors()
 			return wsData, nil
 		}
 		// close the WebSocket connection if error and try SSH
@@ -698,6 +705,7 @@ func (sys *System) fetchDataFromAgent(options common.DataRequestOptions) (*syste
 	if err != nil {
 		return nil, err
 	}
+	sys.syncPendingNetworkMonitors()
 	return sshData, nil
 }
 
@@ -932,6 +940,7 @@ func (s *System) createSSHClient() error {
 		return err
 	}
 	s.agentVersion, _ = extractAgentVersion(string(client.Conn.ServerVersion()))
+	s.monitorsNeedSync.Store(true)
 	s.manager.resetFailedSmartFetchState(s.Id)
 	s.manager.resetFailedZfsFetchState(s.Id)
 	return nil

internal/hub/systems/system_manager.go

@@ -349,23 +349,14 @@ func (sm *SystemManager) AddWebSocketSystem(systemId string, agentVersion semver
 	system := sm.NewSystem(systemId)
 	system.WsConn = wsConn
 	system.agentVersion = agentVersion
+	system.monitorsNeedSync.Store(true)
 
 	if err := sm.AddRecord(systemRecord, system); err != nil {
 		return err
 	}
 
 	// Sync network monitors to the newly connected agent
-	go func() {
+	go system.syncPendingNetworkMonitors()
-		configs, err := sm.GetMonitorConfigsForSystem(systemId)
-		if err != nil {
-			sm.hub.Logger().Warn("failed to load monitors for agent", "system", systemId, "err", err)
-			return
-		}
-		// An empty set must also replace any probes retained across a disconnect.
-		if err := system.SyncNetworkMonitors(configs); err != nil {
-			sm.hub.Logger().Warn("failed to sync monitors to agent", "system", systemId, "err", err)
-		}
-	}()
 
 	return nil
 }

internal/site/src/components/containers-table/containers-table-columns.tsx

@@ -59,7 +59,11 @@ export const containerChartCols: ColumnDef<ContainerRecord>[] = [
 			const allSystems = $allSystemsById.get()
 			const systemNameA = allSystems[a.original.system]?.name ?? ""
 			const systemNameB = allSystems[b.original.system]?.name ?? ""
-			return systemNameA.localeCompare(systemNameB)
+			const primary = systemNameA.localeCompare(systemNameB)
+			if (primary !== 0) {
+				return primary
+			}
+			return a.original.name.localeCompare(b.original.name)
 		},
 		header: ({ column }) => <HeaderButton column={column} name={t`System`} Icon={ServerIcon} />,
 		cell: ({ getValue }) => {

internal/site/src/components/routes/system.tsx

@@ -211,7 +211,6 @@ export default memo(function SystemDetail({ id }: { id: string }) {
 						<TemperatureChart {...coreProps} setPageBottomExtraMargin={setPageBottomExtraMargin} />
 						<FanChart {...coreProps} />
 						<BatteryChart system={system} {...coreProps} />
-						<SwapChart chartData={chartData} grid={grid} dataEmpty={dataEmpty} systemStats={systemStats} />
 						{pageBottomExtraMargin > 0 && <div style={{ marginBottom: pageBottomExtraMargin }}></div>}
 					</div>
 				</TabsContent>

readme.md

@@ -15,9 +15,10 @@ It has a friendly web interface, simple configuration, and is ready to use out o
 
 - **Lightweight**: Smaller and less resource-intensive than leading solutions.
 - **Simple**: Easy setup with little manual configuration required.
+- **Alerts**: Configurable alerts for most metrics. Supports many notification services.
 - **Docker stats**: Tracks CPU, memory, and network usage history for each container.
-- **ZFS**: Tracks pool capacity, health, and I/O, plus per-dataset usage.
+- **Network monitoring**: Monitor response time and interruptions directly from agents.
-- **Alerts**: Configurable alerts for CPU, memory, disk, bandwidth, temperature, fan speed, load average, and status.
+- **S.M.A.R.T.**: Disk health data and notifications on drive failure.
 - **Multi-user**: Users manage their own systems. Admins can share systems across users.
 - **OAuth / OIDC**: Supports many OAuth2 providers. Password auth can be disabled.
 - **Automatic backups**: Save to and restore from disk or S3-compatible storage.
@@ -51,7 +52,7 @@ The [quick start guide](https://beszel.dev/guide/getting-started) and other docu
 - **Temperature** - Host system sensors.
 - **Fan speed** - Host system sensors (Linux, via `/sys/class/hwmon`).
 - **GPU usage / power draw** - Nvidia, AMD, and Intel.
-- **Battery** - Host system battery charge.
+- **Battery charge** - Host system and some peripherals.
 - **Containers** - Status and metrics of all running Docker / Podman containers.
 - **S.M.A.R.T.** - Host system disk health (includes eMMC wear/EOL and Linux mdraid array health via sysfs when available).
 - **ZFS** - Pool capacity, usage, health, I/O throughput, scrub status, and per-dataset usage.

supplemental/helm/beszel-agent/Chart.yaml

@@ -2,9 +2,9 @@ apiVersion: v1
 description: Installs beszel-agent in kubernetes
 home: https://github.com/henrygd/beszel/tree/main/supplemental/helm/beszel-agent
 name: beszel-agent
-appVersion: "0.19.0"
+appVersion: "0.20.0"
 # Bump this version when publishing chart changes.
-version: 0.1.6
+version: 0.1.7
 sources:
   - https://github.com/henrygd/beszel/tree/main/supplemental/helm/beszel-agent
   - https://www.beszel.dev/

supplemental/helm/beszel-agent/README.md

@@ -80,7 +80,7 @@ Essential parameters to configure:
 | `secret.sshKey` | `ssh-key` | Key name in the secret for the SSH public key |
 | `secret.tokenKey` | `token` | Key name in the secret for the authentication token |
 | `image.repository` | `henrygd/beszel-agent` | Container image |
-| `image.tag` | Chart AppVersion (0.19.0) | Image version |
+| `image.tag` | Chart AppVersion (0.20.0) | Image version |
 | `hostNetwork` | `false` | Use host network for network monitoring |
 | `tolerations` | Allows all taints | Tolerations for running on tainted nodes |
 
@@ -385,7 +385,7 @@ helm upgrade beszel-agent ./beszel-agent \
 
 # Change image version
 helm upgrade beszel-agent ./beszel-agent \
-  --set image.tag="0.19.0"
+  --set image.tag="0.20.0"
 ```
 
 ### Restart All Agents
@@ -522,7 +522,7 @@ kubectl get secret beszel-agent -o jsonpath='{.data.ssh-key}' | base64 -d
 ## Chart Information
 
 - **Chart Version**: 0.1.0
-- **App Version**: 0.19.0
+- **App Version**: 0.20.0
 - **Kubernetes Version**: 1.19+
 - **Maintainer**: cloudwithdan (nikoloskid@pm.me)
 

supplemental/helm/beszel-hub/Chart.yaml

@@ -2,9 +2,9 @@ apiVersion: v1
 description: Installs beszel-hub in kubernetes
 home: https://github.com/henrygd/beszel/tree/main/supplemental/helm/beszel-hub
 name: beszel-hub
-appVersion: "0.19.0"
+appVersion: "0.20.0"
 # Bump this version when publishing chart changes.
-version: 0.1.6
+version: 0.1.7
 sources:
   - https://github.com/henrygd/beszel/tree/main/supplemental/helm/beszel-hub
   - https://www.beszel.dev/

supplemental/helm/beszel-hub/README.md

@@ -47,7 +47,7 @@ Key configuration options in `values.yaml`:
 |-----------|---------|-------------|
 | `replicaCount` | `1` | Number of Beszel Hub replicas |
 | `image.repository` | `henrygd/beszel` | Container image repository |
-| `image.tag` | Chart AppVersion (0.19.0) | Container image tag |
+| `image.tag` | Chart AppVersion (0.20.0) | Container image tag |
 | `image.pullPolicy` | `IfNotPresent` | Image pull policy |
 | `service.port` | `8090` | Service port |
 | `persistentVolumeClaim.enabled` | `true` | Enable persistent volume |
@@ -169,7 +169,7 @@ tolerations:
 ```yaml
 replicaCount: 3
 image:
-  tag: "0.19.0"
+  tag: "0.20.0"
 service:
   type: LoadBalancer
 ingress:
@@ -330,7 +330,7 @@ By default, Beszel Hub uses a PersistentVolumeClaim for data storage. Ensure you
 ## Chart Information
 
 - **Chart Version**: 0.1.0
-- **App Version**: 0.19.0
+- **App Version**: 0.20.0
 - **Kubernetes Version**: 1.19+
 - **Maintainer**: cloudwithdan (nikoloskid@pm.me)