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Translations:ReleaseNotes/Liberty/43/zh-tw

Revision as of 08:37, 27 October 2015 by WebberGuo (talk | contribs)
  • 如果你是從Kilo版本來的,再升級到Liberty之前請先升級到最新版本。由於bug https://bugs.launchpad.net/nova/+bug/1474074 修正從Kilo版本訪問Liberty節版本節點問題
  • RAM 和 CPU分配比率現在是由nova-compute所定義的(所以每個compute節點)。分配率也需要提供scheduler服務。取決於compute節點是否運行 Kilo 或是 Liberty,分配比率表現不同 : 如果compute節點運行Kilo該compute的節點CPU and RAM預設設定將會是在controller的nova.conf上,或是compute節點是Liberty那麼你就可以配置compute分配率為CPU and RAM。為了給操作者提供的分配率所有compute節點,預設分配比勒將是在nova.conf設定為0.0(即使對於controller)。這並不代表分配率實際上是0.0,指示操作者提供那些在下一個版本之前 (例如 Mitaka)。需要了解的是,預設配置扔然是16.0為cpu_allocation_ratio 和 1.5為ram_allocation_ratio。
  • 升級Neutron服務"network-vif-deleted"之前nova-compute應該升級到Liberty版本事件event: https://review.openstack.org/#/c/187871/
  • Rootwrap過濾必須升級之後版本加入 'touch'指令。
    • 在Launchpad中bug提到 imagebackend 和 imagecache之間的條件競爭 1256838.
    • 在這情況下如果base image被 ImageCacheManager刪除當 imagebackend的image複製到instance路徑,那麼instance會出現錯誤狀態
    • 為了解決這個問題,有必要改變並增加在compute.filters 'touch'指令 https://review.openstack.org/#/c/217579/.
    • 在案例競爭條件,當libvirt已經改變基本文件所有權 libvirt-qemu同時imagebackend被複製image,然後我們使用os.utime更新檔案時發生拒絕錯誤。要解決這個錯誤我們需要使用root使用者權限去更新存取'touch'指令。
  • DiskFilter現在是由部分 scheduler_default_filters 在Liberty https://review.openstack.org/#/c/207942/
  • 現在只能對應一個vCenter 叢集到一個nova-compute節點 https://review.openstack.org/#/c/103916/
  • Libvirt driver parallels 已經更名為 virtuozzo
  • Orphaned tables - iscsi_targets, volumes - have been removed.
  • The default paste.ini has been updated to use the new v2.1 API for all endpoints, and the v3 endpoint has been removed. A compatibility mode middlewear is used to relax the v2.1 validation for the /v2 and /v1.1 endpoints.
  • The code for DB schema downgrades has now been removed: https://blueprints.launchpad.net/nova/+spec/nova-no-downward-sql-migration
  • The default DB driver we test against is now pymysql rather than Python-MySQL
  • The "powervm" hv_type shim has been removed. This only affects users of the PowerVC driver on stackforge which are using older images with hv_type=powervm in the image metadata.
  • The minimum required version of libvirt in the Mitaka release will be 0.10.2. Support for libvirt < 0.10.2 is deprecated in Liberty: https://review.openstack.org/#/c/183220/
  • The libvirt.remove_unused_kernels config option is deprecated for removal and now defaults to True: https://review.openstack.org/#/c/182315/