\u3000\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f nova.scheduler.filters \u4ee5\u4e0b\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u5168\u3066\u306e\u30d5\u30a3\u30eb\u30bf\u30af\u30e9\u30b9\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u5b9f\u969b\u306b\u306f\u4e0a\u8a18\u306e\u3067\u793a\u3059\u30d5\u30a3\u30eb\u30bf\u30af\u30e9\u30b9\u304c\u9069\u5fdc\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u3000\u30d5\u30a3\u30eb\u30bf\u30af\u30e9\u30b9\u306e\u5b9f\u88c5\u306f\u3001\u4ee5\u4e0b BaseHostFilter \u3092\u7d99\u627f\u3057 host_passes \u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u30d5\u30a3\u30eb\u30bf\u30af\u30e9\u30b9\u306e\u89aa\u30af\u30e9\u30b9 BaseHostFilter \u306e\u5b9a\u7fa9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\r\nclass BaseHostFilter(filters.BaseFilter):\r\n \"\"\"Base class for host filters.\"\"\"\r\n ...\r\n def host_passes(self, host_state, filter_properties):\r\n \"\"\"Return True if the HostState passes the filter, otherwise False.\r\n Override this in a subclass.\r\n \"\"\"\r\n raise NotImplementedError()\r\n<\/pre>\n\u3000host_passes \u30e1\u30bd\u30c3\u30c9\u306f\u3001\u30db\u30b9\u30c8\u306e\u30b9\u30da\u30c3\u30af\u3001\u8d77\u52d5\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u6570\u3001\u4f7f\u7528\u30e1\u30e2\u30ea\u5bb9\u91cf\u7b49\u306e\u30db\u30b9\u30c8\u306e\u72b6\u614b\u3092\u8868\u3059 HostState \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u30b9\u30da\u30c3\u30af\u3068\u30e6\u30fc\u30b6\u6307\u5b9a\u6761\u4ef6\u3092\u30de\u30fc\u30b8\u3057\u305f filter_properties \u306e 2 \u3064\u306e\u5f15\u6570\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002\u305d\u3057\u3066\u5f53\u8a72\u30db\u30b9\u30c8\u3067\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u8d77\u52d5\u53ef\u80fd\u3067\u3042\u308b\u306a\u3089\u3070 True \u3092\u8fd4\u3057\u3001\u305d\u3046\u3067\u306a\u3051\u308c\u3070 False \u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n
\u3000\u3053\u3046\u3057\u3066\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3055\u308c\u305f\u30db\u30b9\u30c8\u306e\u30ea\u30b9\u30c8\u304c\u6b21\u306e Weighting \u51e6\u7406\u306b\u56de\u3055\u308c\u307e\u3059\u3002<\/p>\n
Weighting \u51e6\u7406<\/h4>\n
\u3000Weighting \u51e6\u7406\u306f\u3001get_weighed_hosts \u30e1\u30bd\u30c3\u30c9\u306b\u3088\u3063\u3066\u5b9f\u65bd\u3055\u308c\u307e\u3059\u3002\u4ee5\u4e0b\u304c\u5b9f\u88c5\u306e\u5168\u6587\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\r\n def get_weighed_hosts(self, hosts, weight_properties):\r\n \"\"\"Weigh the hosts.\"\"\"\r\n\r\n return self.weight_handler.get_weighed_objects(self.weight_classes, hosts, weight_properties)\r\n<\/pre>\n\u3000Filtering \u51e6\u7406\u540c\u69d8\u3001\u30ed\u30fc\u30c0\u30d6\u30eb\u306a\u30c9\u30e9\u30a4\u30d0\u306b\u3088\u3063\u3066\u512a\u5148\u5ea6\u4ed8\u3051\u30bd\u30fc\u30c8\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e scheduler_weight_classes \u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u3088\u3063\u3066\u3001\u4f7f\u7528\u3059\u308b\u30c9\u30e9\u30a4\u30d0\u30ea\u30b9\u30c8\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001nova.scheduler.weights \u914d\u4e0b\u306b\u3042\u308b\u5168\u3066\u306e\u30c9\u30e9\u30a4\u30d0\u3092\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3000Filtering \u51e6\u7406\u306e\u5834\u5408\u3068\u9055\u3044\u3001Weighting \u51e6\u7406\u3067\u306f Ram \u3068 Metrics \u306e 2 \u3064\u306e\u30c9\u30e9\u30a4\u30d0\u3060\u3051\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002RAM \u30c9\u30e9\u30a4\u30d0\u306b\u3088\u308b\u91cd\u307f\u4ed8\u3051\u3092\u884c\u3046\u5834\u5408\u306b\u306f\u3001ram_weight_multiplier \u8a2d\u5b9a\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8abf\u7bc0\u3057\u307e\u3059\u3002\u307e\u305f\u30e6\u30fc\u30b6\u5b9a\u7fa9\u30e1\u30c8\u30ea\u30c3\u30af\u5024\u306e\u91cd\u307f\u4ed8\u3051\u3092\u884c\u3046 Metrics \u30c9\u30e9\u30a4\u30d0\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306b\u306f\u3001weight_setting \u8a2d\u5b9a\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u3088\u308a\u3001\u6ce8\u76ee\u3059\u308b\u30db\u30b9\u30c8\u306e\u30e1\u30c8\u30ea\u30c3\u30af\u5024\u53ca\u3073\u91cd\u307f\u5024\u306e\u30ea\u30b9\u30c8\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n
\u3000\u4f46\u3057\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u5168\u3066\u306e\u91cd\u307f\u5024\u306f 1.0 \u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001Weighting \u51e6\u7406\u306b\u3088\u308b\u30db\u30b9\u30c8\u306e\u30bd\u30fc\u30c8\u306f\u5b9f\u65bd\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n
\u307e\u3068\u3081<\/h2>\n
\u3000nova-scheduler \u306e\u5185\u90e8\u306e\u4ed5\u7d44\u307f\u304c\u3069\u3046\u306a\u3063\u3066\u3044\u308b\u304b\u3084\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5b9f\u884c\u3059\u308b\u30db\u30b9\u30c8\u304c\u3069\u306e\u3088\u3046\u306b\u9078\u3070\u308c\u3066\u3044\u308b\u30db\u30b9\u30c8\u306e\u5b9f\u88c5\u304c\u3069\u3046\u306a\u3063\u3066\u3044\u308b\u304b\u3001\u305d\u3057\u3066\u3069\u306e\u90e8\u5206\u3092\u3069\u3046\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308c\u3070\u3001\u3069\u306e\u3088\u3046\u306a\u4e8b\u304c\u51fa\u6765\u305d\u3046\u304b\u3068\u3044\u3046\u3053\u3068\u304c\u5206\u304b\u3063\u3066\u3044\u305f\u3060\u3051\u305f\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n
\u3000OpenStack \u3067\u306f\u3001\u8fd1\u5e74\u8a71\u984c\u306e\u30af\u30e9\u30a6\u30c9\u30aa\u30fc\u30b1\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u62c5\u3046 Heat \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3084\u3001\u5f93\u6765\u306e\u4eee\u60f3\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u7ba1\u7406\u3060\u3051\u3067\u306f\u306a\u304f\u3001\u7269\u7406\u30b5\u30fc\u30d0\u306e\u30d7\u30ed\u30d3\u30b8\u30e7\u30cb\u30f3\u30b0\u3092\u62c5\u3046 Ironic \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306a\u3069\u69d8\u3005\u306a\u6a5f\u80fd\u304c\u8ffd\u52a0\u3055\u308c\u3001IaaS \u30af\u30e9\u30a6\u30c9\u306e\u9818\u57df\u306b\u304a\u3051\u308b OpenStack \u306e\u6709\u7528\u6027\u306f\u307e\u3059\u307e\u3059\u5e83\u304c\u3063\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u5192\u982d\u3067\u89e6\u308c\u305f\u3088\u3046\u306b\u3001\u6211\u3005\u3084\u4ed6\u306e\u5927\u624b\u30b3\u30f3\u30c6\u30f3\u30c4\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304c\u3053\u305e\u3063\u3066\u63a1\u7528\u3057\u59cb\u3081\u305f\u3053\u3068\u3067\u3001\u305d\u306e\u91cd\u8981\u6027\u3082\u5897\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3000\u3053\u3046\u3057\u305f\u80cc\u666f\u304b\u3089 OpenStack \u306e\u904b\u7528\u30ce\u30a6\u30cf\u30a6\u3092\u84c4\u7a4d\u3059\u308b\u91cd\u8981\u6027\u306f\u4eca\u5f8c\u307e\u3059\u307e\u3059\u9ad8\u307e\u3063\u3066\u3086\u304f\u3068\u601d\u308f\u308c\u307e\u3059\u3002\u4eca\u56de\u306e\u30a8\u30f3\u30c8\u30ea\u304c\u305d\u306e\u304a\u5f79\u306b\u305f\u3066\u305f\u306a\u3089\u5e78\u3044\u3067\u3059\u3002<\/p>\n
\u3000\u6700\u5f8c\u307e\u3067\u8aad\u3093\u3067\u304f\u3060\u3055\u308a\u3001\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3057\u305f\u3002<\/p>\n
---
\n\u3000\u660e\u65e5\u306f Ruby \u30b3\u30df\u30c3\u30bf\u306e\u9ad8\u91ce\u5149\u5f18\u3055\u3093\u306e\u8a18\u4e8b\u306b\u306a\u308a\u307e\u3059\u3002\u304a\u697d\u3057\u307f\u306b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u306f\u3058\u3081\u306b \u3000\u3053\u3093\u306b\u3061\u306f\u3002\u300eGREE Advent Calendar 2014\u300f\u306e 23 \u65e5\u76ee\u306e\u8a18\u4e8b\u3092\u62c5\u5f53\u3057\u307e\u3059\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u672c\u90e8\u958b\u767a\u90e8\u306e\u5927\u5c71\u3067\u3059\u3002\u6628\u5e74\u306e AdventCalendar \u3067 OpenFlow \u30b3\u30f3\u30c8\u30ed […]<\/p>\n","protected":false},"author":121,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[54,81,56],"class_list":["post-12903","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","tag-advent-calendar","tag-openstack","tag-python"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/posts\/12903","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/users\/121"}],"replies":[{"embeddable":true,"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/comments?post=12903"}],"version-history":[{"count":3,"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/posts\/12903\/revisions"}],"predecessor-version":[{"id":13173,"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/posts\/12903\/revisions\/13173"}],"wp:attachment":[{"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/media?parent=12903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/categories?post=12903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/labs.gree.jp\/blog\/wp-json\/wp\/v2\/tags?post=12903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![](\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2014\/12\/openstack-arch-havana-logical-v1.jpg\")
![](\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2014\/12\/nova-compute.png\")
![](\"http:\/\/labs.gree.jp\/blog\/wp-content\/uploads\/2014\/12\/scheduler_component.png\")
![](\"http:\/\/docs.openstack.org\/developer\/nova\/_images\/filteringWorkflow1.png\")