Unattended Simulated Mode
【0.架構】
- Haizea Configuration File - 一個文字檔包含一些選項
- Request Tracefile - 一個文字檔包含了租約的需求
【1.配置】
【1.1 Haizea Configuration File】
| 從上圖架構知道，要使用 Haiea 的第一步便是要撰寫一篇好的 Haizea Configuration File，官方文件說可以參考範例檔 /usr/share/haizea/etc/sample_trace.conf 和 sample_trace_barebones (兩個文件內容一樣，只差再第2份沒註解)，文檔中要注意的地方是 option 的設定和配置 |
- 以下面範例來解說 option，便是『模擬』 2006-11-25 下午1點開始執行任務在 4台有1顆CPU 和1G Ram 的機器上執行 ([simulation]->屬性名稱，startime、resources->屬性細部設定)
[simulation] starttime: 2006-11-25 13:00:00 resources: 4 CPU:100 Memory:1024
- 參考的屬性值
【1.2 Tracefile File】
| 而 Tracefile 便是在 Haizea Configuration File 中的 [tracefile] 屬性指定 |
[tracefile] tracefile: /usr/share/haizea/traces/sample.lwf
- 此 Tracefile 範例檔的格式為 LWF/Lease Workload Format (類似 XML 的格式)
<lease-workload name="sample"> <description> A simple trace where an AR lease preempts a best-effort lease that is already running. </description> <lease-requests> <!-- The lease requests are initially commented out --> <!-- First lease request --> <!-- ... --> <!-- Second lease request --> <!-- ... --> </lease-requests> </lease-workload>
- XML 格式參考
【2.開始模擬】
| 現在我們使用已寫好的範例 configuration(sample_trace.conf) 和 tracefile(sample.lwf)，便可透過haizea 指令開始執行模擬 (參數 -c 為指定設定檔) |
【2.1 範例一】
# haizea -c /usr/share/haizea/etc/sample_trace.conf [2006-11-25 13:00:00.00] RM Starting resource manager [2006-11-25 13:00:00.00] TFILE Loading tracefile /usr/share/haizea/traces/sample.lwf [2006-11-25 13:00:00.00] TFILE Loaded workload with 0 requests () [2006-11-25 13:00:00.00] CLOCK Starting simulated clock [2006-11-25 13:00:00.00] CLOCK Simulated clock has stopped [2006-11-25 13:00:00.00] RM Stopping resource manager gracefully... [2006-11-25 13:00:00.00] RM --- Haizea status summary --- [2006-11-25 13:00:00.00] RM Number of leases (not including completed): 0 [2006-11-25 13:00:00.00] RM Completed leases: 0 [2006-11-25 13:00:00.00] RM ---- End summary ----
- 此結果輸出主要有三類：RM(Resource Manager)、TFILE(TraceFile)、CLOCK
- RM Starting resource manager：啟動資源管理者
- TFILE Loading tracefile /usr/share/haizea/traces/sample.lwf：載入 tracefile
- TFILE Loaded workload with 0 requests ()：此範例檔並無租約要求
- CLOCK Starting simulated clock：開始模擬的 clock
- CLOCK Simulated clock has stopped：停止模擬的 clock
【2.2 範例一之版本1】
- 現在我們修改 TraceFile (將註解的第18行和第34行打開)
19 <lease-request arrival="00:00:00"> 20 <lease preemptible="true"> 21 <nodes> 22 <node-set numnodes="1"> 23 <res type="CPU" amount="100"/> 24 <res type="Memory" amount="1024"/> 25 </node-set> 26 </nodes> 27 <start></start> 28 <duration time="01:00:00"/> 29 <software> 30 <disk-image id="foobar.img" size="1024"/> 31 </software> 32 </lease> 33 </lease-request>
- 再執行它
# haizea -c /usr/share/haizea/etc/sample_trace.conf [2006-11-25 13:00:00.00] RM Starting resource manager [2006-11-25 13:00:00.00] TFILE Loading tracefile /usr/share/haizea/traces/sample.lwf [2006-11-25 13:00:00.00] TFILE Loaded workload with 1 requests (1 Best-effort) [2006-11-25 13:00:00.00] CLOCK Starting simulated clock [2006-11-25 13:00:00.00] LSCHED Lease #1 has been requested. [2006-11-25 13:00:00.00] LSCHED Lease #1 has been marked as pending. [2006-11-25 13:00:00.00] LSCHED Queued best-effort lease request #1, 1 nodes for 01:00:00.00. [2006-11-25 13:00:00.00] LSCHED Next request in the queue is lease 1. Attempting to schedule... [2006-11-25 13:00:00.00] VMSCHED Lease #1 has been scheduled on nodes [1] from 2006-11-25 13:00:00.00 to 2006-11-25 14:00:00.00 [2006-11-25 13:00:00.00] VMSCHED Started VMs for lease 1 on nodes [1] [2006-11-25 14:00:00.00] VMSCHED Stopped VMs for lease 1 on nodes [1] [2006-11-25 14:00:00.00] VMSCHED Lease 1's VMs have shutdown. [2006-11-25 14:00:00.00] CLOCK Simulated clock has stopped [2006-11-25 14:00:00.00] RM Stopping resource manager gracefully... [2006-11-25 14:00:00.00] RM --- Haizea status summary --- [2006-11-25 14:00:00.00] RM Number of leases (not including completed): 0 [2006-11-25 14:00:00.00] RM Completed leases: 1 [2006-11-25 14:00:00.00] RM ---- End summary ----
- 兩個 CLOCK 之間多了LSCHED(租約排程) 和 VMSCHED(VM排程)
- LSCHED Lease #1 has been requested.
- LSCHED Lease #1 has been marked as pending.
- LSCHED Queued best-effort lease request #1, 1 nodes for 01:00:00.00.
- LSCHED Next request in the queue is lease 1. Attempting to schedule...
- VMSCHED Lease #1 has been scheduled on nodes [1] from 2006-11-25 13:00:00.00 to 2006-11-25 14:00:00.00
- VMSCHED Started VMs for lease 1 on nodes [1]
- VMSCHED Stopped VMs for lease 1 on nodes [1]
- VMSCHED Lease 1's VMs have shutdown.
<- 流程圖解：此 Best-effort 租約要求一台 node 在 13:00時，並持續擁有資源此 1小時
【2.2 範例一之版本2】
- 繼續修改 TraceFile (再把註解的第37行和第55行打開)
38 <lease-request arrival="00:15:00"> 39 <lease preemptible="false"> 40 <nodes> 41 <node-set numnodes="4"> 42 <res type="CPU" amount="100"/> 43 <res type="Memory" amount="1024"/> 44 </node-set> 45 </nodes> 46 <start> 47 <exact time="00:30:00"/> 48 </start> 49 <duration time="00:30:00"/> 50 <software> 51 <disk-image id="foobar.img" size="1024"/> 52 </software> 53 </lease> 54 </lease-request>
- 執行它
# haizea -c /usr/share/haizea/etc/sample_trace.conf [2006-11-25 13:00:00.00] RM Starting resource manager [2006-11-25 13:00:00.00] TFILE Loading tracefile /usr/share/haizea/traces/sample.lwf [2006-11-25 13:00:00.00] TFILE Loaded workload with 2 requests (1 Best-effort + 1 AR) [2006-11-25 13:00:00.00] CLOCK Starting simulated clock [2006-11-25 13:00:00.00] LSCHED Lease #1 has been requested. [2006-11-25 13:00:00.00] LSCHED Lease #1 has been marked as pending. [2006-11-25 13:00:00.00] LSCHED Queued best-effort lease request #1, 1 nodes for 01:00:00.00. [2006-11-25 13:00:00.00] LSCHED Next request in the queue is lease 1. Attempting to schedule... [2006-11-25 13:00:00.00] VMSCHED Lease #1 has been scheduled on nodes [1] from 2006-11-25 13:00:00.00 to 2006-11-25 14:00:00.00 [2006-11-25 13:00:00.00] VMSCHED Started VMs for lease 1 on nodes [1] [2006-11-25 13:15:00.00] LSCHED Lease #2 has been requested. [2006-11-25 13:15:00.00] LSCHED Lease #2 has been marked as pending. [2006-11-25 13:15:00.00] LSCHED Scheduling AR lease #2, 4 nodes from 2006-11-25 13:30:00.00 to 2006-11-25 14:00:00.00. [2006-11-25 13:15:00.00] LSCHED Must preempt leases [1] to make room for lease #2 [2006-11-25 13:15:00.00] LSCHED Preempting lease #1... [2006-11-25 13:15:00.00] LSCHED ... lease #1 will be suspended at 2006-11-25 13:30:00.00. [2006-11-25 13:15:00.00] LSCHED AR lease #2 has been scheduled. [2006-11-25 13:29:28.00] VMSCHED Stopped VMs for lease 1 on nodes [1] [2006-11-25 13:29:28.00] VMSCHED Suspending lease 1... [2006-11-25 13:30:00.00] VMSCHED Lease 1 suspended. [2006-11-25 13:30:00.00] VMSCHED Started VMs for lease 2 on nodes [2, 3, 4, 1] [2006-11-25 13:30:00.00] LSCHED Next request in the queue is lease 1. Attempting to schedule... [2006-11-25 13:30:00.00] VMSCHED Lease #1 has been scheduled on nodes [1] from 2006-11-25 14:00:00.00 (resuming) to 2006-11-25 14:31:04.00 [2006-11-25 14:00:00.00] VMSCHED Stopped VMs for lease 2 on nodes [2, 3, 4, 1] [2006-11-25 14:00:00.00] VMSCHED Resuming lease 1... [2006-11-25 14:00:00.00] VMSCHED Lease 2's VMs have shutdown. [2006-11-25 14:00:32.00] VMSCHED Resumed lease 1 [2006-11-25 14:00:32.00] VMSCHED Started VMs for lease 1 on nodes [1] [2006-11-25 14:31:04.00] VMSCHED Stopped VMs for lease 1 on nodes [1] [2006-11-25 14:31:04.00] VMSCHED Lease 1's VMs have shutdown. [2006-11-25 14:31:04.00] CLOCK Simulated clock has stopped [2006-11-25 14:31:04.00] RM Stopping resource manager gracefully... [2006-11-25 14:31:04.00] RM --- Haizea status summary --- [2006-11-25 14:31:04.00] RM Number of leases (not including completed): 0 [2006-11-25 14:31:04.00] RM Completed leases: 2 [2006-11-25 14:31:04.00] RM ---- End summary ----
<- 流程圖解：第1個租約(Best-effort lease)要求一台 node 在 13:00時，並持續擁有資源此 1 小時，到了13:15分時，第2個租約(AR lease)要求出現，他需要 4 台 node 再 13:30開始執行，並持續擁有資源 30 分鐘 (因為AR lease 優先權高於 Best-effort lease，所以到了13:30時，將第1個租約先 suspend起來，等到13:30 第2個資約完成後，才resume回來繼續執行租約1)
Last modified 15 years ago
Last modified on Jan 20, 2010, 10:52:32 AM
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