openstack虛擬機器resize原始碼分析(更新至排程計算節點執行任務)
阿新 • • 發佈：2018-12-13
openstack虛擬機器resize原始碼分析
resize過程python-client端debug
[[email protected] ~(keystone_admin)]# nova --debug resize 2001bdd5-8a2e-4ff4-b8fc-8a5eff066728 2 --poll
DEBUG (session:195) REQ: curl -g -i -X GET http://10.10.10.250:35357/v2.0/ -H "Accept: application/json" -H "User-Agent: python-keystoneclient"
INFO ( [[email protected] ~(keystone_admin)]# nova list
+--------------------------------------+-------------+---------------+------------+-------------+-----------------------------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+-------------+---------------+------------+-------------+-----------------------------------+
| 2001bdd5-8a2e-4ff4-b8fc-8a5eff066728 | cirros_test | VERIFY_RESIZE | - | Running | tstack-vxlan-network=172.16.0.105 |
+--------------------------------------+-------------+---------------+------------+-------------+-----------------------------------+
[[email protected] ~(keystone_admin)]# nova --debug resize-confirm 2001bdd5-8a2e-4ff4-b8fc-8a5eff066728
DEBUG (session:195) REQ: curl -g -i -X GET http://10.10.10.250:35357/v2.0/ -H "Accept: application/json" -H "User-Agent: python-keystoneclient"
INFO (connectionpool:203) Starting new HTTP connection (1): 10.10.10.250
DEBUG (connectionpool:383) "GET /v2.0/ HTTP/1.1" 200 339
DEBUG (session:224) RESP: [200] content-length: 339 vary: X-Auth-Token keep-alive: timeout=5, max=100 server: Apache/2.4.6 (CentOS) mod_wsgi/3.4 Python/2.7.5 connection: Keep-Alive date: Thu, 30 Aug 2018 11:41:52 GMT content-type: application/json x-openstack-request-id: req-bad6820b-800a-498f-b758-d81ae7cb2a3f
RESP BODY: {"version": {"status": "stable", "updated": "2014-04-17T00:00:00Z", "media-types": [{"base": "application/json", "type": "application/vnd.openstack.identity-v2.0+json"}], "id": "v2.0", "links": [{"href": "http://10.10.10.250:35357/v2.0/", "rel": "self"}, {"href": "http://docs.openstack.org/", "type": "text/html", "rel": "describedby"}]}}
DEBUG (v2:76) Making authentication request to http://10.10.10.250:35357/v2.0/tokens
DEBUG (connectionpool:383) "POST /v2.0/tokens HTTP/1.1" 200 3484
DEBUG (session:195) REQ: curl -g -i -X GET http://10.10.10.250:8774/v2/b045010ed16147c680a368fd23d96272/servers/2001bdd5-8a2e-4ff4-b8fc-8a5eff066728 -H "User-Agent: python-novaclient" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}ad997cb2eabbfb8ed4e469f296470180e21a4526"
INFO (connectionpool:203) Starting new HTTP connection (1): 10.10.10.250
DEBUG (connectionpool:383) "GET /v2/b045010ed16147c680a368fd23d96272/servers/2001bdd5-8a2e-4ff4-b8fc-8a5eff066728 HTTP/1.1" 200 1759
DEBUG (session:224) RESP: [200] date: Thu, 30 Aug 2018 11:41:53 GMT connection: keep-alive content-type: application/json content-length: 1759 x-compute-request-id: req-cb70e06c-2364-4b01-966a-eb5de997d934
RESP BODY: {"server": {"OS-EXT-STS:task_state": null, "addresses": {"tstack-vxlan-network": [{"OS-EXT-IPS-MAC:mac_addr": "fa:16:3e:fd:06:74", "version": 4, "addr": "172.16.0.105", "OS-EXT-IPS:type": "fixed"}]}, "links": [{"href": "http://10.10.10.250:8774/v2/b045010ed16147c680a368fd23d96272/servers/2001bdd5-8a2e-4ff4-b8fc-8a5eff066728", "rel": "self"}, {"href": "http://10.10.10.250:8774/b045010ed16147c680a368fd23d96272/servers/2001bdd5-8a2e-4ff4-b8fc-8a5eff066728", "rel": "bookmark"}], "image": {"id": "0be3adcf-181b-4c8a-a5f4-657e972497d8", "links": [{"href": "http://10.10.10.250:8774/b045010ed16147c680a368fd23d96272/images/0be3adcf-181b-4c8a-a5f4-657e972497d8", "rel": "bookmark"}]}, "OS-EXT-STS:vm_state": "resized", "OS-EXT-SRV-ATTR:instance_name": "instance-00000009", "OS-SRV-USG:launched_at": "2018-08-30T11:40:48.000000", "flavor": {"id": "3", "links": [{"href": "http://10.10.10.250:8774/b045010ed16147c680a368fd23d96272/flavors/3", "rel": "bookmark"}]}, "id": "2001bdd5-8a2e-4ff4-b8fc-8a5eff066728", "security_groups": [{"name": "default"}], "user_id": "33f84664ac69496ea4cdfb7166fbf416", "OS-DCF:diskConfig": "MANUAL", "accessIPv4": "", "accessIPv6": "", "progress": 0, "OS-EXT-STS:power_state": 1, "region_node_id": "REGION_FYD_1", "config_drive": "", "status": "VERIFY_RESIZE", "updated": "2018-08-30T19:44:58Z", "hostId": "1b346db001405aa020eb63097240a58b546291e1464c4a3dad66e6b3", "OS-EXT-SRV-ATTR:host": "openstack-compute01", "OS-SRV-USG:terminated_at": null, "key_name": null, "OS-EXT-AZ:availability_zone": "nova", "OS-EXT-SRV-ATTR:hypervisor_hostname": "openstack-compute01", "name": "cirros_test", "created": "2018-08-30T10:35:32Z", "tenant_id": "b045010ed16147c680a368fd23d96272", "os-extended-volumes:volumes_attached": [], "metadata": {}}}
DEBUG (session:195) REQ: curl -g -i -X POST http://10.10.10.250:8774/v2/b045010ed16147c680a368fd23d96272/servers/2001bdd5-8a2e-4ff4-b8fc-8a5eff066728/action -H "User-Agent: python-novaclient" -H "Content-Type: application/json" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}ad997cb2eabbfb8ed4e469f296470180e21a4526" -d '{"confirmResize": null}'
DEBUG (connectionpool:383) "POST /v2/b045010ed16147c680a368fd23d96272/servers/2001bdd5-8a2e-4ff4-b8fc-8a5eff066728/action HTTP/1.1" 204 0
DEBUG (session:224) RESP: [204] date: Thu, 30 Aug 2018 11:41:53 GMT connection: keep-alive content-type: application/json content-length: 0 x-compute-request-id: req-cf558e26-888b-4596-9af3-31b02905e4ba
debug分析
### resize過程
獲取keystone版本詳情
curl -g -i -X GET http://10.10.10.250:35357/v2.0/ -H "Accept: application/json" -H "User-Agent: python-keystoneclient"
驗證admin資訊並生成token
DEBUG (connectionpool:383) "POST /v2.0/tokens HTTP/1.1" 200 3484
帶著token去請求虛擬機器資訊
curl -g -i -X GET http://10.10.10.250:8774/v2/b045010ed16147c680a368fd23d96272/servers/2001bdd5-8a2e-4ff4-b8fc-8a5eff066728 -H "User-Agent: python-novaclient" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}c963302cb137a44f36fa62c50c39fff3462d7e34"
# 格式為 /v2/{tenant_id}/servers/{server_id}
帶著token去獲取resizede的目標flavor
curl -g -i -X GET http://10.10.10.250:8774/v2/b045010ed16147c680a368fd23d96272/flavors/2 -H "User-Agent: python-novaclient" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}c963302cb137a44f36fa62c50c39fff3462d7e34"
傳送調整例項請求
curl -g -i -X POST http://10.10.10.250:8774/v2/b045010ed16147c680a368fd23d96272/servers/2001bdd5-8a2e-4ff4-b8fc-8a5eff066728/action -H "User-Agent: python-novaclient" -H "Content-Type: application/json" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}c963302cb137a44f36fa62c50c39fff3462d7e34" -d '{"resize": {"flavorRef": "2"}}'
# 格式為/v2/{tenant_id}/servers/action
# 行為json引數為
#{
# "resize": {
# "flavorRef": "2"
# }
#}
再次獲取虛擬機器資訊 監控伺服器狀態 直到狀態改變為VERIFY_RESIZE 結束這個任務
curl -g -i -X GET http://10.10.10.250:8774/v2/b045010ed16147c680a368fd23d96272/servers/2001bdd5-8a2e-4ff4-b8fc-8a5eff066728 -H "User-Agent: python-novaclient" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}c963302cb137a44f36fa62c50c39fff3462d7e34"
resize confirm過程
獲取keystone版本資訊
curl -g -i -X GET http://10.10.10.250:35357/v2.0/ -H "Accept: application/json" -H "User-Agent: python-keystoneclient"
驗證admin資訊並生成token
curl -g -i -X GET http://10.10.10.250:8774/v2/b045010ed16147c680a368fd23d96272/servers/2001bdd5-8a2e-4ff4-b8fc-8a5eff066728 -H "User-Agent: python-novaclient" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}ad997cb2eabbfb8ed4e469f296470180e21a4526"
帶著token去執行resize-confirm請求
curl -g -i -X POST http://10.10.10.250:8774/v2/b045010ed16147c680a368fd23d96272/servers/2001bdd5-8a2e-4ff4-b8fc-8a5eff066728/action -H "User-Agent: python-novaclient" -H "Content-Type: application/json" -H "Accept: application/json" -H "X-Auth-Token: {SHA1}ad997cb2eabbfb8ed4e469f296470180e21a4526" -d '{"confirmResize": null}'
# 請求引數json格式
#{
# "confirmResize": null
#}
在v2 api中 基本上所有的外部請求都要先去keystone驗證身份 然後從keystone獲取一個token 拿著這個token再去做其他行為
resize過程原始碼分析
通過原始碼地圖setup.cfg可以知道nova api實現的程式碼路徑nova/api/openstack/compute/servers.py
def _resize(self, req, instance_id, flavor_id, **kwargs):
"""Begin the resize process with given instance/flavor.
輸入引數說明如下：
req:Request：物件，包含本次請求的上下文
instance_id：例項id
flavor_id：機型id
**kwargs:其他引數字典
"""