mirror of https://github.com/apache/cloudstack.git
458 lines
19 KiB
Plaintext
458 lines
19 KiB
Plaintext
#Licensed to the Apache Software Foundation (ASF) under one
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#or more contributor license agreements. See the NOTICE file
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#distributed with this work for additional information
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#regarding copyright ownership. The ASF licenses this file
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#to you under the Apache License, Version 2.0 (the
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#"License"); you may not use this file except in compliance
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#with the License. You may obtain a copy of the License at
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#http://www.apache.org/licenses/LICENSE-2.0
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#Unless required by applicable law or agreed to in writing,
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#software distributed under the License is distributed on an
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#"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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#KIND, either express or implied. See the License for the
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#specific language governing permissions and limitations
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#under the License.
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#
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# Translators:
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# Isaac Chiang <isaacchiang@gmail.com>, 2013.
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msgid ""
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msgstr ""
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"Project-Id-Version: Apache CloudStack Docs\n"
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"POT-Creation-Date: 2013-04-12T11:19:38\n"
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"PO-Revision-Date: 2013-04-08 15:40+0000\n"
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"Last-Translator: isaac.chiang <isaacchiang@gmail.com>\n"
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"Language-Team: None\n"
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"MIME-Version: 1.0\n"
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"Content-Type: text/plain; charset=UTF-8\n"
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"Content-Transfer-Encoding: 8bit\n"
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"Language: zh_TW\n"
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"Plural-Forms: nplurals=1; plural=0;\n"
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#. Tag: title
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#, no-c-format
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msgid "Configuring AutoScale"
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msgstr "設定 AutoScale "
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#. Tag: para
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#, no-c-format
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msgid ""
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"AutoScaling allows you to scale your back-end services or application VMs up"
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" or down seamlessly and automatically according to the conditions you "
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"define. With AutoScaling enabled, you can ensure that the number of VMs you "
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"are using seamlessly scale up when demand increases, and automatically "
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"decreases when demand subsides. Thus it helps you save compute costs by "
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"terminating underused VMs automatically and launching new VMs when you need "
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"them, without the need for manual intervention."
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msgstr "AutoScaling允許您擴充終端服務或無縫及自動地增加或減少VM，根據您的設定。啟用AutoScaling，您可以確定當需求增加時，VM數量會跟著增加，反之則自動減少。這能幫您減少運算成本，不用手動介入"
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#. Tag: para
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#, no-c-format
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msgid ""
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"NetScaler AutoScaling is designed to seamlessly launch or terminate VMs "
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"based on user-defined conditions. Conditions for triggering a scaleup or "
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"scaledown action can vary from a simple use case like monitoring the CPU "
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"usage of a server to a complex use case of monitoring a combination of "
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"server's responsiveness and its CPU usage. For example, you can configure "
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"AutoScaling to launch an additional VM whenever CPU usage exceeds 80 percent"
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" for 15 minutes, or to remove a VM whenever CPU usage is less than 20 "
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"percent for 30 minutes."
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msgstr "NetScaler AutoScaling設計為無縫執行或根據使用者定義情況終止VM，觸發變動的情況會依據像監控CPU使用率等簡單的規則，或是監控伺服器的反應及CPU使用率等複雜的規則而有所不同，例如，您想要想要在CPU使用率在15分鐘超過80%就增加VM，或是CPU使用率在30分鐘低於20%就移除VM"
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#. Tag: para
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#, no-c-format
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msgid ""
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"&PRODUCT; uses the NetScaler load balancer to monitor all aspects of a "
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"system's health and work in unison with &PRODUCT; to initiate scale-up or "
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"scale-down actions."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid "AutoScale is supported on NetScaler Release 10 Build 73.e and beyond."
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msgstr ""
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#. Tag: title
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#, no-c-format
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msgid "Prerequisites"
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msgstr "事前準備"
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#. Tag: para
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#, no-c-format
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msgid "Before you configure an AutoScale rule, consider the following:"
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msgstr "在您設定 AutoScale 規則之前，請先考慮："
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#. Tag: para
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#, no-c-format
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msgid ""
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"Ensure that the necessary template is prepared before configuring AutoScale."
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" When a VM is deployed by using a template and when it comes up, the "
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"application should be up and running."
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msgstr "確保必要的模組已經準備好，當VM使用模組部署時，應用程式需要出現並執行"
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#. Tag: para
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#, no-c-format
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msgid ""
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"If the application is not running, the NetScaler device considers the VM as "
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"ineffective and continues provisioning the VMs unconditionally until the "
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"resource limit is exhausted."
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msgstr "如果應用程式並未執行，NetScaler裝置會認為VM是無效的，並繼續無條件的配置VM，直到資源耗盡"
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#. Tag: para
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#, no-c-format
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msgid ""
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"Deploy the templates you prepared. Ensure that the applications come up on "
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"the first boot and is ready to take the traffic. Observe the time requires "
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"to deploy the template. Consider this time when you specify the quiet time "
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"while configuring AutoScale."
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msgstr "部署您準備的模組，確定應用程式在開機時有出現，並可以處理流量。觀察部署模組需要的時間，用來考慮設定AutoScale時是否正常"
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#. Tag: para
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#, no-c-format
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msgid ""
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"The AutoScale feature supports the SNMP counters that can be used to define "
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"conditions for taking scale up or scale down actions. To monitor the SNMP-"
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"based counter, ensure that the SNMP agent is installed in the template used "
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"for creating the AutoScale VMs, and the SNMP operations work with the "
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"configured SNMP community and port by using standard SNMP managers. For "
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"example, see <xref linkend=\"configure-snmp-rhel\" /> to configure SNMP on a"
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" RHEL machine."
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msgstr "AutoScale功能支援SNMP計數器，可使用為定義狀況，想要監視 SNMP-based 計數器，請確保SNMP agent已安裝在模組中，及 使用標準SNMP管理器，使 SNMP運作單元可以在設定後的SNMP 群組及通訊埠正常運作，例如，詳見<xref linkend=\"configure-snmp-rhel\" />來設定RHEL機器上的SNMP "
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#. Tag: para
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#, no-c-format
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msgid ""
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"Ensure that the endpointe.url parameter present in the Global Settings is "
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"set to the Management Server API URL. For example, "
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"http://10.102.102.22:8080/client/api. In a multi-node Management Server "
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"deployment, use the virtual IP address configured in the load balancer for "
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"the management server’s cluster. Additionally, ensure that the NetScaler "
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"device has access to this IP address to provide AutoScale support."
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msgstr "確定endpointe.url 欄位有出現在Global Setting，並設定為Management Server API URL。例如，http://10.102.102.22:8080/client/api。對於多節點管理伺服器，使用虛擬IP，在管理伺服器叢集的負載平衡器中設定。另外，確定NetScaler 裝置可以存取此IP，藉此提供AutoScale支援"
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#. Tag: para
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#, no-c-format
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msgid ""
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"If you update the endpointe.url, disable the AutoScale functionality of the "
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"load balancer rules in the system, then enable them back to reflect the "
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"changes. For more information see <xref linkend=\"update-autoscale\" />"
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msgstr "如果您更新endpointe.url，請停用系統的負載平衡規則的AutoScale功能，然後再啟用，使變更生效，更多資訊，詳見<xref linkend=\"update-autoscale\" /> "
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#. Tag: para
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#, no-c-format
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msgid ""
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"If the API Key and Secret Key are regenerated for an AutoScale user, ensure "
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"that the AutoScale functionality of the load balancers that the user "
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"participates in are disabled and then enabled to reflect the configuration "
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"changes in the NetScaler."
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msgstr "如果API Key 及 Secret Key為AutoScale 使用者重新產生，請確定使用者參與的負載平衡器的AutoScale功能，有先停用後再啟用，以使變更生效"
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#. Tag: para
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#, no-c-format
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msgid ""
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"In an advanced Zone, ensure that at least one VM should be present before "
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"configuring a load balancer rule with AutoScale. Having one VM in the "
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"network ensures that the network is in implemented state for configuring "
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"AutoScale."
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msgstr "在進階區域中，確定在設定AutoScale的負載平衡規則前，至少有一個VM顯示，此確定網路是在執行狀態"
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#. Tag: title
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#, no-c-format
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msgid "Configuration"
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msgstr "系統設定"
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#. Tag: para
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#, no-c-format
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msgid "Specify the following:"
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msgstr "具體說明以下："
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Template</emphasis>: A template consists of a base "
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"OS image and application. A template is used to provision the new instance "
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"of an application on a scaleup action. When a VM is deployed from a "
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"template, the VM can start taking the traffic from the load balancer without"
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" any admin intervention. For example, if the VM is deployed for a Web "
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"service, it should have the Web server running, the database connected, and "
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"so on."
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msgstr "<emphasis role=\"bold\">Template</emphasis>：模組包含作業系統映像及應用程式。用來提供新 instance 擴增動作，當VM部署後，VM可以開始由負載平衡器接收流量，例如，如果VM部署為網頁服務，網頁伺服器應會開始執行，資料庫開始連結，然後繼續下去"
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Compute offering</emphasis>: A predefined set of "
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"virtual hardware attributes, including CPU speed, number of CPUs, and RAM "
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"size, that the user can select when creating a new virtual machine instance."
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" Choose one of the compute offerings to be used while provisioning a VM "
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"instance as part of scaleup action."
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msgstr "<emphasis role=\"bold\">Compute offering</emphasis>：一組先定義的虛擬硬體，包含CPU速度、CPU數量及記憶體大小，讓使用者可以在建立新的虛擬機器時選擇，配置VM instance為擴增動作的一部份時，選擇一個計算服務"
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Min Instance</emphasis>: The minimum number of "
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"active VM instances that is assigned to a load balancing rule. The active VM"
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" instances are the application instances that are up and serving the "
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"traffic, and are being load balanced. This parameter ensures that a load "
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"balancing rule has at least the configured number of active VM instances are"
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" available to serve the traffic."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"If an application, such as SAP, running on a VM instance is down for some "
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"reason, the VM is then not counted as part of Min Instance parameter, and "
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"the AutoScale feature initiates a scaleup action if the number of active VM "
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"instances is below the configured value. Similarly, when an application "
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"instance comes up from its earlier down state, this application instance is "
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"counted as part of the active instance count and the AutoScale process "
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"initiates a scaledown action when the active instance count breaches the Max"
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" instance value."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Max Instance</emphasis>: Maximum number of active VM"
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" instances that <emphasis role=\"bold\">should be assigned to </emphasis>a "
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"load balancing rule. This parameter defines the upper limit of active VM "
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"instances that can be assigned to a load balancing rule."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"Specifying a large value for the maximum instance parameter might result in "
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"provisioning large number of VM instances, which in turn leads to a single "
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"load balancing rule exhausting the VM instances limit specified at the "
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"account or domain level."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"If an application, such as SAP, running on a VM instance is down for some "
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"reason, the VM is not counted as part of Max Instance parameter. So there "
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"may be scenarios where the number of VMs provisioned for a scaleup action "
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"might be more than the configured Max Instance value. Once the application "
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"instances in the VMs are up from an earlier down state, the AutoScale "
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"feature starts aligning to the configured Max Instance value."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid "Specify the following scale-up and scale-down policies:"
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Duration</emphasis>: The duration, in seconds, for "
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"which the conditions you specify must be true to trigger a scaleup action. "
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"The conditions defined should hold true for the entire duration you specify "
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"for an AutoScale action to be invoked."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Counter</emphasis>: The performance counters expose "
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"the state of the monitored instances. By default, &PRODUCT; offers four "
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"performance counters: Three SNMP counters and one NetScaler counter. The "
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"SNMP counters are Linux User CPU, Linux System CPU, and Linux CPU Idle. The "
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"NetScaler counter is ResponseTime. The root administrator can add additional"
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" counters into &PRODUCT; by using the &PRODUCT; API."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Operator</emphasis>: The following five relational "
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"operators are supported in AutoScale feature: Greater than, Less than, Less "
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"than or equal to, Greater than or equal to, and Equal to."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Threshold</emphasis>: Threshold value to be used for"
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" the counter. Once the counter defined above breaches the threshold value, "
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"the AutoScale feature initiates a scaleup or scaledown action."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid "<emphasis role=\"bold\">Add</emphasis>: Click Add to add the condition."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"Additionally, if you want to configure the advanced settings, click Show "
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"advanced settings, and specify the following:"
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Polling interval</emphasis>: Frequency in which the "
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"conditions, combination of counter, operator and threshold, are to be "
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"evaluated before taking a scale up or down action. The default polling "
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"interval is 30 seconds."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Quiet Time</emphasis>: This is the cool down period "
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"after an AutoScale action is initiated. The time includes the time taken to "
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"complete provisioning a VM instance from its template and the time taken by "
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"an application to be ready to serve traffic. This quiet time allows the "
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"fleet to come up to a stable state before any action can take place. The "
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"default is 300 seconds."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Destroy VM Grace Period</emphasis>: The duration in "
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"seconds, after a scaledown action is initiated, to wait before the VM is "
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"destroyed as part of scaledown action. This is to ensure graceful close of "
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"any pending sessions or transactions being served by the VM marked for "
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"destroy. The default is 120 seconds."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Security Groups</emphasis>: Security groups provide "
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"a way to isolate traffic to the VM instances. A security group is a group of"
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" VMs that filter their incoming and outgoing traffic according to a set of "
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"rules, called ingress and egress rules. These rules filter network traffic "
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"according to the IP address that is attempting to communicate with the VM."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Disk Offerings</emphasis>: A predefined set of disk "
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"size for primary data storage."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">SNMP Community</emphasis>: The SNMP community string"
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" to be used by the NetScaler device to query the configured counter value "
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"from the provisioned VM instances. Default is public."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">SNMP Port</emphasis>: The port number on which the "
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"SNMP agent that run on the provisioned VMs is listening. Default port is "
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"161."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">User</emphasis>: This is the user that the NetScaler"
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" device use to invoke scaleup and scaledown API calls to the cloud. If no "
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"option is specified, the user who configures AutoScaling is applied. Specify"
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" another user name to override."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"<emphasis role=\"bold\">Apply</emphasis>: Click Apply to create the "
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"AutoScale configuration."
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msgstr ""
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#. Tag: title
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#, no-c-format
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msgid "Disabling and Enabling an AutoScale Configuration"
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"If you want to perform any maintenance operation on the AutoScale VM "
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"instances, disable the AutoScale configuration. When the AutoScale "
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"configuration is disabled, no scaleup or scaledown action is performed. You "
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"can use this downtime for the maintenance activities. To disable the "
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"AutoScale configuration, click the Disable AutoScale<inlinemediaobject> "
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"<imageobject> <imagedata fileref=\"./images/enable-disable-autoscale.png\" "
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"/> </imageobject> <textobject> <phrase>EnableDisable.png: button to enable "
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"or disable AutoScale.</phrase> </textobject> </inlinemediaobject>button."
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msgstr ""
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#. Tag: para
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#, no-c-format
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msgid ""
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"The button toggles between enable and disable, depending on whether "
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"AutoScale is currently enabled or not. After the maintenance operations are "
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"done, you can enable the AutoScale configuration back. To enable, open the "
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"AutoScale configuration page again, then click the Enable "
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||
"AutoScale<inlinemediaobject> <imageobject> <imagedata fileref=\"./images"
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||
"/enable-disable-autoscale.png\" /> </imageobject> <textobject> "
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||
"<phrase>EnableDisable.png: button to enable or disable AutoScale.</phrase> "
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"</textobject> </inlinemediaobject>button."
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msgstr ""
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|
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#. Tag: title
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||
#, no-c-format
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||
msgid "Updating an AutoScale Configuration"
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msgstr ""
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#. Tag: para
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||
#, no-c-format
|
||
msgid ""
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||
"You can update the various parameters and add or delete the conditions in a "
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"scaleup or scaledown rule. Before you update an AutoScale configuration, "
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||
"ensure that you disable the AutoScale load balancer rule by clicking the "
|
||
"Disable AutoScale button."
|
||
msgstr ""
|
||
|
||
#. Tag: para
|
||
#, no-c-format
|
||
msgid ""
|
||
"After you modify the required AutoScale parameters, click Apply. To apply "
|
||
"the new AutoScale policies, open the AutoScale configuration page again, "
|
||
"then click the Enable AutoScale button."
|
||
msgstr ""
|
||
|
||
#. Tag: title
|
||
#, no-c-format
|
||
msgid "Runtime Considerations"
|
||
msgstr ""
|
||
|
||
#. Tag: para
|
||
#, no-c-format
|
||
msgid ""
|
||
"An administrator should not assign a VM to a load balancing rule which is "
|
||
"configured for AutoScale."
|
||
msgstr ""
|
||
|
||
#. Tag: para
|
||
#, no-c-format
|
||
msgid ""
|
||
"Before a VM provisioning is completed if NetScaler is shutdown or restarted,"
|
||
" the provisioned VM cannot be a part of the load balancing rule though the "
|
||
"intent was to assign it to a load balancing rule. To workaround, rename the "
|
||
"AutoScale provisioned VMs based on the rule name or ID so at any point of "
|
||
"time the VMs can be reconciled to its load balancing rule."
|
||
msgstr ""
|
||
|
||
#. Tag: para
|
||
#, no-c-format
|
||
msgid ""
|
||
"Making API calls outside the context of AutoScale, such as destroyVM, on an "
|
||
"autoscaled VM leaves the load balancing configuration in an inconsistent "
|
||
"state. Though VM is destroyed from the load balancer rule, NetScaler "
|
||
"continues to show the VM as a service assigned to a rule."
|
||
msgstr ""
|