github.com/bigcommerce/nomad@v0.9.3-bc/command/node_status.go (about) 1 package command 2 3 import ( 4 "fmt" 5 "math" 6 "sort" 7 "strconv" 8 "strings" 9 "time" 10 11 humanize "github.com/dustin/go-humanize" 12 "github.com/hashicorp/nomad/api" 13 "github.com/hashicorp/nomad/api/contexts" 14 "github.com/hashicorp/nomad/helper" 15 "github.com/posener/complete" 16 ) 17 18 const ( 19 // floatFormat is a format string for formatting floats. 20 floatFormat = "#,###.##" 21 22 // bytesPerMegabyte is the number of bytes per MB 23 bytesPerMegabyte = 1024 * 1024 24 ) 25 26 type NodeStatusCommand struct { 27 Meta 28 length int 29 short bool 30 verbose bool 31 list_allocs bool 32 self bool 33 stats bool 34 json bool 35 tmpl string 36 } 37 38 func (c *NodeStatusCommand) Help() string { 39 helpText := ` 40 Usage: nomad node status [options] <node> 41 42 Display status information about a given node. The list of nodes 43 returned includes only nodes which jobs may be scheduled to, and 44 includes status and other high-level information. 45 46 If a node ID is passed, information for that specific node will be displayed, 47 including resource usage statistics. If no node ID's are passed, then a 48 short-hand list of all nodes will be displayed. The -self flag is useful to 49 quickly access the status of the local node. 50 51 General Options: 52 53 ` + generalOptionsUsage() + ` 54 55 Node Status Options: 56 57 -self 58 Query the status of the local node. 59 60 -stats 61 Display detailed resource usage statistics. 62 63 -allocs 64 Display a count of running allocations for each node. 65 66 -short 67 Display short output. Used only when a single node is being 68 queried, and drops verbose output about node allocations. 69 70 -verbose 71 Display full information. 72 73 -json 74 Output the node in its JSON format. 75 76 -t 77 Format and display node using a Go template. 78 ` 79 return strings.TrimSpace(helpText) 80 } 81 82 func (c *NodeStatusCommand) Synopsis() string { 83 return "Display status information about nodes" 84 } 85 86 func (c *NodeStatusCommand) AutocompleteFlags() complete.Flags { 87 return mergeAutocompleteFlags(c.Meta.AutocompleteFlags(FlagSetClient), 88 complete.Flags{ 89 "-allocs": complete.PredictNothing, 90 "-json": complete.PredictNothing, 91 "-self": complete.PredictNothing, 92 "-short": complete.PredictNothing, 93 "-stats": complete.PredictNothing, 94 "-t": complete.PredictAnything, 95 "-verbose": complete.PredictNothing, 96 }) 97 } 98 99 func (c *NodeStatusCommand) AutocompleteArgs() complete.Predictor { 100 return complete.PredictFunc(func(a complete.Args) []string { 101 client, err := c.Meta.Client() 102 if err != nil { 103 return nil 104 } 105 106 resp, _, err := client.Search().PrefixSearch(a.Last, contexts.Nodes, nil) 107 if err != nil { 108 return []string{} 109 } 110 return resp.Matches[contexts.Nodes] 111 }) 112 } 113 114 func (c *NodeStatusCommand) Name() string { return "node-status" } 115 116 func (c *NodeStatusCommand) Run(args []string) int { 117 118 flags := c.Meta.FlagSet(c.Name(), FlagSetClient) 119 flags.Usage = func() { c.Ui.Output(c.Help()) } 120 flags.BoolVar(&c.short, "short", false, "") 121 flags.BoolVar(&c.verbose, "verbose", false, "") 122 flags.BoolVar(&c.list_allocs, "allocs", false, "") 123 flags.BoolVar(&c.self, "self", false, "") 124 flags.BoolVar(&c.stats, "stats", false, "") 125 flags.BoolVar(&c.json, "json", false, "") 126 flags.StringVar(&c.tmpl, "t", "", "") 127 128 if err := flags.Parse(args); err != nil { 129 return 1 130 } 131 132 // Check that we got either a single node or none 133 args = flags.Args() 134 if len(args) > 1 { 135 c.Ui.Error("This command takes either one or no arguments") 136 c.Ui.Error(commandErrorText(c)) 137 return 1 138 } 139 140 // Truncate the id unless full length is requested 141 c.length = shortId 142 if c.verbose { 143 c.length = fullId 144 } 145 146 // Get the HTTP client 147 client, err := c.Meta.Client() 148 if err != nil { 149 c.Ui.Error(fmt.Sprintf("Error initializing client: %s", err)) 150 return 1 151 } 152 153 // Use list mode if no node name was provided 154 if len(args) == 0 && !c.self { 155 156 // Query the node info 157 nodes, _, err := client.Nodes().List(nil) 158 if err != nil { 159 c.Ui.Error(fmt.Sprintf("Error querying node status: %s", err)) 160 return 1 161 } 162 163 // If output format is specified, format and output the node data list 164 if c.json || len(c.tmpl) > 0 { 165 out, err := Format(c.json, c.tmpl, nodes) 166 if err != nil { 167 c.Ui.Error(err.Error()) 168 return 1 169 } 170 171 c.Ui.Output(out) 172 return 0 173 } 174 175 // Return nothing if no nodes found 176 if len(nodes) == 0 { 177 return 0 178 } 179 180 // Format the nodes list 181 out := make([]string, len(nodes)+1) 182 183 out[0] = "ID|DC|Name|Class|" 184 185 if c.verbose { 186 out[0] += "Address|Version|" 187 } 188 189 out[0] += "Drain|Eligibility|Status" 190 191 if c.list_allocs { 192 out[0] += "|Running Allocs" 193 } 194 195 for i, node := range nodes { 196 out[i+1] = fmt.Sprintf("%s|%s|%s|%s", 197 limit(node.ID, c.length), 198 node.Datacenter, 199 node.Name, 200 node.NodeClass) 201 if c.verbose { 202 out[i+1] += fmt.Sprintf("|%s|%s", 203 node.Address, node.Version) 204 } 205 out[i+1] += fmt.Sprintf("|%v|%s|%s", 206 node.Drain, 207 node.SchedulingEligibility, 208 node.Status) 209 210 if c.list_allocs { 211 numAllocs, err := getRunningAllocs(client, node.ID) 212 if err != nil { 213 c.Ui.Error(fmt.Sprintf("Error querying node allocations: %s", err)) 214 return 1 215 } 216 out[i+1] += fmt.Sprintf("|%v", 217 len(numAllocs)) 218 } 219 } 220 221 // Dump the output 222 c.Ui.Output(formatList(out)) 223 return 0 224 } 225 226 // Query the specific node 227 var nodeID string 228 if !c.self { 229 nodeID = args[0] 230 } else { 231 var err error 232 if nodeID, err = getLocalNodeID(client); err != nil { 233 c.Ui.Error(err.Error()) 234 return 1 235 } 236 } 237 if len(nodeID) == 1 { 238 c.Ui.Error(fmt.Sprintf("Identifier must contain at least two characters.")) 239 return 1 240 } 241 242 nodeID = sanitizeUUIDPrefix(nodeID) 243 nodes, _, err := client.Nodes().PrefixList(nodeID) 244 if err != nil { 245 c.Ui.Error(fmt.Sprintf("Error querying node info: %s", err)) 246 return 1 247 } 248 // Return error if no nodes are found 249 if len(nodes) == 0 { 250 c.Ui.Error(fmt.Sprintf("No node(s) with prefix %q found", nodeID)) 251 return 1 252 } 253 if len(nodes) > 1 { 254 // Dump the output 255 c.Ui.Error(fmt.Sprintf("Prefix matched multiple nodes\n\n%s", 256 formatNodeStubList(nodes, c.verbose))) 257 return 1 258 } 259 260 // Prefix lookup matched a single node 261 node, _, err := client.Nodes().Info(nodes[0].ID, nil) 262 if err != nil { 263 c.Ui.Error(fmt.Sprintf("Error querying node info: %s", err)) 264 return 1 265 } 266 267 // If output format is specified, format and output the data 268 if c.json || len(c.tmpl) > 0 { 269 out, err := Format(c.json, c.tmpl, node) 270 if err != nil { 271 c.Ui.Error(err.Error()) 272 return 1 273 } 274 275 c.Ui.Output(out) 276 return 0 277 } 278 279 return c.formatNode(client, node) 280 } 281 282 func nodeDrivers(n *api.Node) []string { 283 var drivers []string 284 for k, v := range n.Attributes { 285 // driver.docker = 1 286 parts := strings.Split(k, ".") 287 if len(parts) != 2 { 288 continue 289 } else if parts[0] != "driver" { 290 continue 291 } else if v != "1" { 292 continue 293 } 294 295 drivers = append(drivers, parts[1]) 296 } 297 298 sort.Strings(drivers) 299 return drivers 300 } 301 302 func formatDrain(n *api.Node) string { 303 if n.DrainStrategy != nil { 304 b := new(strings.Builder) 305 b.WriteString("true") 306 if n.DrainStrategy.DrainSpec.Deadline.Nanoseconds() < 0 { 307 b.WriteString("; force drain") 308 } else if n.DrainStrategy.ForceDeadline.IsZero() { 309 b.WriteString("; no deadline") 310 } else { 311 fmt.Fprintf(b, "; %s deadline", formatTime(n.DrainStrategy.ForceDeadline)) 312 } 313 314 if n.DrainStrategy.IgnoreSystemJobs { 315 b.WriteString("; ignoring system jobs") 316 } 317 return b.String() 318 } 319 320 return strconv.FormatBool(n.Drain) 321 } 322 323 func (c *NodeStatusCommand) formatNode(client *api.Client, node *api.Node) int { 324 // Format the header output 325 basic := []string{ 326 fmt.Sprintf("ID|%s", limit(node.ID, c.length)), 327 fmt.Sprintf("Name|%s", node.Name), 328 fmt.Sprintf("Class|%s", node.NodeClass), 329 fmt.Sprintf("DC|%s", node.Datacenter), 330 fmt.Sprintf("Drain|%v", formatDrain(node)), 331 fmt.Sprintf("Eligibility|%s", node.SchedulingEligibility), 332 fmt.Sprintf("Status|%s", node.Status), 333 } 334 335 if c.short { 336 basic = append(basic, fmt.Sprintf("Drivers|%s", strings.Join(nodeDrivers(node), ","))) 337 c.Ui.Output(c.Colorize().Color(formatKV(basic))) 338 } else { 339 // Get the host stats 340 hostStats, nodeStatsErr := client.Nodes().Stats(node.ID, nil) 341 if nodeStatsErr != nil { 342 c.Ui.Output("") 343 c.Ui.Error(fmt.Sprintf("error fetching node stats: %v", nodeStatsErr)) 344 } 345 if hostStats != nil { 346 uptime := time.Duration(hostStats.Uptime * uint64(time.Second)) 347 basic = append(basic, fmt.Sprintf("Uptime|%s", uptime.String())) 348 } 349 350 // Emit the driver info 351 if !c.verbose { 352 driverStatus := fmt.Sprintf("Driver Status| %s", c.outputTruncatedNodeDriverInfo(node)) 353 basic = append(basic, driverStatus) 354 } 355 356 c.Ui.Output(c.Colorize().Color(formatKV(basic))) 357 358 if c.verbose { 359 c.outputNodeDriverInfo(node) 360 } 361 362 // Emit node events 363 c.outputNodeStatusEvents(node) 364 365 // Get list of running allocations on the node 366 runningAllocs, err := getRunningAllocs(client, node.ID) 367 if err != nil { 368 c.Ui.Error(fmt.Sprintf("Error querying node for running allocations: %s", err)) 369 return 1 370 } 371 372 allocatedResources := getAllocatedResources(client, runningAllocs, node) 373 c.Ui.Output(c.Colorize().Color("\n[bold]Allocated Resources[reset]")) 374 c.Ui.Output(formatList(allocatedResources)) 375 376 actualResources, err := getActualResources(client, runningAllocs, node) 377 if err == nil { 378 c.Ui.Output(c.Colorize().Color("\n[bold]Allocation Resource Utilization[reset]")) 379 c.Ui.Output(formatList(actualResources)) 380 } 381 382 hostResources, err := getHostResources(hostStats, node) 383 if err != nil { 384 c.Ui.Output("") 385 c.Ui.Error(fmt.Sprintf("error fetching node stats: %v", err)) 386 } 387 if err == nil { 388 c.Ui.Output(c.Colorize().Color("\n[bold]Host Resource Utilization[reset]")) 389 c.Ui.Output(formatList(hostResources)) 390 } 391 392 if err == nil && node.NodeResources != nil && len(node.NodeResources.Devices) > 0 { 393 c.Ui.Output(c.Colorize().Color("\n[bold]Device Resource Utilization[reset]")) 394 c.Ui.Output(formatList(getDeviceResourcesForNode(hostStats.DeviceStats, node))) 395 } 396 if hostStats != nil && c.stats { 397 c.Ui.Output(c.Colorize().Color("\n[bold]CPU Stats[reset]")) 398 c.printCpuStats(hostStats) 399 c.Ui.Output(c.Colorize().Color("\n[bold]Memory Stats[reset]")) 400 c.printMemoryStats(hostStats) 401 c.Ui.Output(c.Colorize().Color("\n[bold]Disk Stats[reset]")) 402 c.printDiskStats(hostStats) 403 if len(hostStats.DeviceStats) > 0 { 404 c.Ui.Output(c.Colorize().Color("\n[bold]Device Stats[reset]")) 405 printDeviceStats(c.Ui, hostStats.DeviceStats) 406 } 407 } 408 } 409 410 nodeAllocs, _, err := client.Nodes().Allocations(node.ID, nil) 411 if err != nil { 412 c.Ui.Error(fmt.Sprintf("Error querying node allocations: %s", err)) 413 return 1 414 } 415 416 c.Ui.Output(c.Colorize().Color("\n[bold]Allocations[reset]")) 417 c.Ui.Output(formatAllocList(nodeAllocs, c.verbose, c.length)) 418 419 if c.verbose { 420 c.formatAttributes(node) 421 c.formatDeviceAttributes(node) 422 c.formatMeta(node) 423 } 424 return 0 425 426 } 427 428 func (c *NodeStatusCommand) outputTruncatedNodeDriverInfo(node *api.Node) string { 429 drivers := make([]string, 0, len(node.Drivers)) 430 431 for driverName, driverInfo := range node.Drivers { 432 if !driverInfo.Detected { 433 continue 434 } 435 436 if !driverInfo.Healthy { 437 drivers = append(drivers, fmt.Sprintf("%s (unhealthy)", driverName)) 438 } else { 439 drivers = append(drivers, driverName) 440 } 441 } 442 sort.Strings(drivers) 443 return strings.Trim(strings.Join(drivers, ","), ", ") 444 } 445 446 func (c *NodeStatusCommand) outputNodeDriverInfo(node *api.Node) { 447 c.Ui.Output(c.Colorize().Color("\n[bold]Drivers")) 448 449 size := len(node.Drivers) 450 nodeDrivers := make([]string, 0, size+1) 451 452 nodeDrivers = append(nodeDrivers, "Driver|Detected|Healthy|Message|Time") 453 454 drivers := make([]string, 0, len(node.Drivers)) 455 for driver := range node.Drivers { 456 drivers = append(drivers, driver) 457 } 458 sort.Strings(drivers) 459 460 for _, driver := range drivers { 461 info := node.Drivers[driver] 462 timestamp := formatTime(info.UpdateTime) 463 nodeDrivers = append(nodeDrivers, fmt.Sprintf("%s|%v|%v|%s|%s", driver, info.Detected, info.Healthy, info.HealthDescription, timestamp)) 464 } 465 c.Ui.Output(formatList(nodeDrivers)) 466 } 467 468 func (c *NodeStatusCommand) outputNodeStatusEvents(node *api.Node) { 469 c.Ui.Output(c.Colorize().Color("\n[bold]Node Events")) 470 c.outputNodeEvent(node.Events) 471 } 472 473 func (c *NodeStatusCommand) outputNodeEvent(events []*api.NodeEvent) { 474 size := len(events) 475 nodeEvents := make([]string, size+1) 476 if c.verbose { 477 nodeEvents[0] = "Time|Subsystem|Message|Details" 478 } else { 479 nodeEvents[0] = "Time|Subsystem|Message" 480 } 481 482 for i, event := range events { 483 timestamp := formatTime(event.Timestamp) 484 subsystem := formatEventSubsystem(event.Subsystem, event.Details["driver"]) 485 msg := event.Message 486 if c.verbose { 487 details := formatEventDetails(event.Details) 488 nodeEvents[size-i] = fmt.Sprintf("%s|%s|%s|%s", timestamp, subsystem, msg, details) 489 } else { 490 nodeEvents[size-i] = fmt.Sprintf("%s|%s|%s", timestamp, subsystem, msg) 491 } 492 } 493 c.Ui.Output(formatList(nodeEvents)) 494 } 495 496 func formatEventSubsystem(subsystem, driverName string) string { 497 if driverName == "" { 498 return subsystem 499 } 500 501 // If this event is for a driver, append the driver name to make the message 502 // clearer 503 return fmt.Sprintf("Driver: %s", driverName) 504 } 505 506 func formatEventDetails(details map[string]string) string { 507 output := make([]string, 0, len(details)) 508 for k, v := range details { 509 output = append(output, fmt.Sprintf("%s: %s ", k, v)) 510 } 511 return strings.Join(output, ", ") 512 } 513 514 func (c *NodeStatusCommand) formatAttributes(node *api.Node) { 515 // Print the attributes 516 keys := make([]string, len(node.Attributes)) 517 for k := range node.Attributes { 518 keys = append(keys, k) 519 } 520 sort.Strings(keys) 521 522 var attributes []string 523 for _, k := range keys { 524 if k != "" { 525 attributes = append(attributes, fmt.Sprintf("%s|%s", k, node.Attributes[k])) 526 } 527 } 528 c.Ui.Output(c.Colorize().Color("\n[bold]Attributes[reset]")) 529 c.Ui.Output(formatKV(attributes)) 530 } 531 532 func (c *NodeStatusCommand) formatDeviceAttributes(node *api.Node) { 533 if node.NodeResources == nil { 534 return 535 } 536 devices := node.NodeResources.Devices 537 if len(devices) == 0 { 538 return 539 } 540 541 sort.Slice(devices, func(i, j int) bool { 542 return devices[i].ID() < devices[j].ID() 543 }) 544 545 first := true 546 for _, d := range devices { 547 if len(d.Attributes) == 0 { 548 continue 549 } 550 551 if first { 552 c.Ui.Output("\nDevice Group Attributes") 553 first = false 554 } else { 555 c.Ui.Output("") 556 } 557 c.Ui.Output(formatKV(getDeviceAttributes(d))) 558 } 559 } 560 561 func (c *NodeStatusCommand) formatMeta(node *api.Node) { 562 // Print the meta 563 keys := make([]string, 0, len(node.Meta)) 564 for k := range node.Meta { 565 keys = append(keys, k) 566 } 567 sort.Strings(keys) 568 569 var meta []string 570 for _, k := range keys { 571 if k != "" { 572 meta = append(meta, fmt.Sprintf("%s|%s", k, node.Meta[k])) 573 } 574 } 575 c.Ui.Output(c.Colorize().Color("\n[bold]Meta[reset]")) 576 c.Ui.Output(formatKV(meta)) 577 } 578 579 func (c *NodeStatusCommand) printCpuStats(hostStats *api.HostStats) { 580 l := len(hostStats.CPU) 581 for i, cpuStat := range hostStats.CPU { 582 cpuStatsAttr := make([]string, 4) 583 cpuStatsAttr[0] = fmt.Sprintf("CPU|%v", cpuStat.CPU) 584 cpuStatsAttr[1] = fmt.Sprintf("User|%v%%", humanize.FormatFloat(floatFormat, cpuStat.User)) 585 cpuStatsAttr[2] = fmt.Sprintf("System|%v%%", humanize.FormatFloat(floatFormat, cpuStat.System)) 586 cpuStatsAttr[3] = fmt.Sprintf("Idle|%v%%", humanize.FormatFloat(floatFormat, cpuStat.Idle)) 587 c.Ui.Output(formatKV(cpuStatsAttr)) 588 if i+1 < l { 589 c.Ui.Output("") 590 } 591 } 592 } 593 594 func (c *NodeStatusCommand) printMemoryStats(hostStats *api.HostStats) { 595 memoryStat := hostStats.Memory 596 memStatsAttr := make([]string, 4) 597 memStatsAttr[0] = fmt.Sprintf("Total|%v", humanize.IBytes(memoryStat.Total)) 598 memStatsAttr[1] = fmt.Sprintf("Available|%v", humanize.IBytes(memoryStat.Available)) 599 memStatsAttr[2] = fmt.Sprintf("Used|%v", humanize.IBytes(memoryStat.Used)) 600 memStatsAttr[3] = fmt.Sprintf("Free|%v", humanize.IBytes(memoryStat.Free)) 601 c.Ui.Output(formatKV(memStatsAttr)) 602 } 603 604 func (c *NodeStatusCommand) printDiskStats(hostStats *api.HostStats) { 605 l := len(hostStats.DiskStats) 606 for i, diskStat := range hostStats.DiskStats { 607 diskStatsAttr := make([]string, 7) 608 diskStatsAttr[0] = fmt.Sprintf("Device|%s", diskStat.Device) 609 diskStatsAttr[1] = fmt.Sprintf("MountPoint|%s", diskStat.Mountpoint) 610 diskStatsAttr[2] = fmt.Sprintf("Size|%s", humanize.IBytes(diskStat.Size)) 611 diskStatsAttr[3] = fmt.Sprintf("Used|%s", humanize.IBytes(diskStat.Used)) 612 diskStatsAttr[4] = fmt.Sprintf("Available|%s", humanize.IBytes(diskStat.Available)) 613 diskStatsAttr[5] = fmt.Sprintf("Used Percent|%v%%", humanize.FormatFloat(floatFormat, diskStat.UsedPercent)) 614 diskStatsAttr[6] = fmt.Sprintf("Inodes Percent|%v%%", humanize.FormatFloat(floatFormat, diskStat.InodesUsedPercent)) 615 c.Ui.Output(formatKV(diskStatsAttr)) 616 if i+1 < l { 617 c.Ui.Output("") 618 } 619 } 620 } 621 622 // getRunningAllocs returns a slice of allocation id's running on the node 623 func getRunningAllocs(client *api.Client, nodeID string) ([]*api.Allocation, error) { 624 var allocs []*api.Allocation 625 626 // Query the node allocations 627 nodeAllocs, _, err := client.Nodes().Allocations(nodeID, nil) 628 // Filter list to only running allocations 629 for _, alloc := range nodeAllocs { 630 if alloc.ClientStatus == "running" { 631 allocs = append(allocs, alloc) 632 } 633 } 634 return allocs, err 635 } 636 637 // getAllocatedResources returns the resource usage of the node. 638 func getAllocatedResources(client *api.Client, runningAllocs []*api.Allocation, node *api.Node) []string { 639 // Compute the total 640 total := computeNodeTotalResources(node) 641 642 // Get Resources 643 var cpu, mem, disk int 644 for _, alloc := range runningAllocs { 645 cpu += *alloc.Resources.CPU 646 mem += *alloc.Resources.MemoryMB 647 disk += *alloc.Resources.DiskMB 648 } 649 650 resources := make([]string, 2) 651 resources[0] = "CPU|Memory|Disk" 652 resources[1] = fmt.Sprintf("%d/%d MHz|%s/%s|%s/%s", 653 cpu, 654 *total.CPU, 655 humanize.IBytes(uint64(mem*bytesPerMegabyte)), 656 humanize.IBytes(uint64(*total.MemoryMB*bytesPerMegabyte)), 657 humanize.IBytes(uint64(disk*bytesPerMegabyte)), 658 humanize.IBytes(uint64(*total.DiskMB*bytesPerMegabyte))) 659 660 return resources 661 } 662 663 // computeNodeTotalResources returns the total allocatable resources (resources 664 // minus reserved) 665 func computeNodeTotalResources(node *api.Node) api.Resources { 666 total := api.Resources{} 667 668 r := node.Resources 669 res := node.Reserved 670 if res == nil { 671 res = &api.Resources{} 672 } 673 total.CPU = helper.IntToPtr(*r.CPU - *res.CPU) 674 total.MemoryMB = helper.IntToPtr(*r.MemoryMB - *res.MemoryMB) 675 total.DiskMB = helper.IntToPtr(*r.DiskMB - *res.DiskMB) 676 return total 677 } 678 679 // getActualResources returns the actual resource usage of the allocations. 680 func getActualResources(client *api.Client, runningAllocs []*api.Allocation, node *api.Node) ([]string, error) { 681 // Compute the total 682 total := computeNodeTotalResources(node) 683 684 // Get Resources 685 var cpu float64 686 var mem uint64 687 for _, alloc := range runningAllocs { 688 // Make the call to the client to get the actual usage. 689 stats, err := client.Allocations().Stats(alloc, nil) 690 if err != nil { 691 return nil, err 692 } 693 694 cpu += stats.ResourceUsage.CpuStats.TotalTicks 695 mem += stats.ResourceUsage.MemoryStats.RSS 696 } 697 698 resources := make([]string, 2) 699 resources[0] = "CPU|Memory" 700 resources[1] = fmt.Sprintf("%v/%d MHz|%v/%v", 701 math.Floor(cpu), 702 *total.CPU, 703 humanize.IBytes(mem), 704 humanize.IBytes(uint64(*total.MemoryMB*bytesPerMegabyte))) 705 706 return resources, nil 707 } 708 709 // getHostResources returns the actual resource usage of the node. 710 func getHostResources(hostStats *api.HostStats, node *api.Node) ([]string, error) { 711 if hostStats == nil { 712 return nil, fmt.Errorf("actual resource usage not present") 713 } 714 var resources []string 715 716 // calculate disk usage 717 storageDevice := node.Attributes["unique.storage.volume"] 718 var diskUsed, diskSize uint64 719 var physical bool 720 for _, disk := range hostStats.DiskStats { 721 if disk.Device == storageDevice { 722 diskUsed = disk.Used 723 diskSize = disk.Size 724 physical = true 725 } 726 } 727 728 resources = make([]string, 2) 729 resources[0] = "CPU|Memory|Disk" 730 if physical { 731 resources[1] = fmt.Sprintf("%v/%d MHz|%s/%s|%s/%s", 732 math.Floor(hostStats.CPUTicksConsumed), 733 *node.Resources.CPU, 734 humanize.IBytes(hostStats.Memory.Used), 735 humanize.IBytes(hostStats.Memory.Total), 736 humanize.IBytes(diskUsed), 737 humanize.IBytes(diskSize), 738 ) 739 } else { 740 // If non-physical device are used, output device name only, 741 // since nomad doesn't collect the stats data. 742 resources[1] = fmt.Sprintf("%v/%d MHz|%s/%s|(%s)", 743 math.Floor(hostStats.CPUTicksConsumed), 744 *node.Resources.CPU, 745 humanize.IBytes(hostStats.Memory.Used), 746 humanize.IBytes(hostStats.Memory.Total), 747 storageDevice, 748 ) 749 } 750 return resources, nil 751 } 752 753 // formatNodeStubList is used to return a table format of a list of node stubs. 754 func formatNodeStubList(nodes []*api.NodeListStub, verbose bool) string { 755 // Return error if no nodes are found 756 if len(nodes) == 0 { 757 return "" 758 } 759 // Truncate the id unless full length is requested 760 length := shortId 761 if verbose { 762 length = fullId 763 } 764 765 // Format the nodes list that matches the prefix so that the user 766 // can create a more specific request 767 out := make([]string, len(nodes)+1) 768 out[0] = "ID|DC|Name|Class|Drain|Eligibility|Status" 769 for i, node := range nodes { 770 out[i+1] = fmt.Sprintf("%s|%s|%s|%s|%v|%s|%s", 771 limit(node.ID, length), 772 node.Datacenter, 773 node.Name, 774 node.NodeClass, 775 node.Drain, 776 node.SchedulingEligibility, 777 node.Status) 778 } 779 780 return formatList(out) 781 }