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OpenStackµÄAPI·ç¸ñΪ£ºRESTful£¬Ëü¿ÉÒÔ¼æÈÝAWS(ÑÇÂíÑ·ÔÆ)¡¢S3£»¼´Openstack¿ÉÖ±½Óµ÷ÓÃAWS»òS3ÉϵÄÓ¦Óã¬

Ò²¿ÉÒÔÖ±½ÓÔÚAWS¡¢S3Éϵ÷ÓÃOpenStackµÄÓ¦Ó㻿ɷdz£·½±ãµÄ×é¼þ»ìºÏÔÆ¡£

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1. ·þÎñÃû:Compute(´úÂëÃû:Nova) :ËüÖ÷ÒªÓÃÀ´¹ÜÀíVMʵÀýµÄÍêÕûÉúÃüÖÜÆÚ,Æô¶¯¡¢×ÊÔ´·ÖÅä¡¢¹Ø±Õ¡¢Ïú»Ù¡¢ÔËÐÐÖÐSSHÃÜÔ¿×¢Èë¡¢SSHÁ¬½ÓµÄÌṩµÈ£¬¾ùÓÉËüÀ´Ìṩ¡£

2.·þÎñÃû:Networking(´úÂëÃû:Neutron):ÔçÆÚÓÉNova,¼´ComputeÀ´Ìṩ£¬´ÓF°æ(Folsom release)¿ªÊ¼¶ÀÁ¢³öÀ´,ÓÃÓÚÌá¹©ÍøÂçÁ¬½Ó·þÎñ£¬Ëü²ÉÓòå¼þÉè¼Æ,Ö§³ÖÖÚ¶àÁ÷ÐеÄÍøÂç¹ÜÀí²å¼þ.

3.Storage £º·ÖÁ½¸ö×é¼þ£¬Ò»¸öΪBlock´æ´¢(Cinder), ÁíÒ»¸öΪ¶ÔÏó´æ´¢(Swift)

¶ÔÏó´æ´¢£ºÀàËÆÓÚVMwareµÄ´ÅÅÌÎļþ,µ«VMwareµÄ´ÅÅÌÎļþ²¢·ÇÊǶÔÏó´æ´¢,¶ÔÏó´æ´¢ÊÇ×ÔÉí°üº¬×ÔÉíµÄÔªÊý¾Ý£¬¼´±ã½«Ëü·Åµ½Ò»¸öûÓÐÎļþϵͳµÄ´ÅÅÌÉÏ£¬ËüÒ²ÄÜ×ÔÎÒ¹ÜÀí¡£OpenStack²ÉÓÃSwiftÕâ¸öÖØÁ¿¼¶µÄ·Ö²¼Ê½´æ´¢ÏµÍ³,ÊÇÒòΪ¿ª·¢¸ÃϵͳµÄ¹«Ë¾ÊÇOpenStackµÄÔçÆÚ·¢ÆðÈËÖ®Ò»,²¢ÇҸù«Ë¾»¹½«×Ô¼ºµÄ·Ö²¼Ê½´æ´¢ÏµÍ³¹±Ï׸øOpenStack×÷ΪÆä¶ÔÏó´æ´¢ÏµÍ³,¸Ãϵͳ¾ÍÊÇSwift¡£

Object Storage: ´úÂëÃû:Swift,ËüÊÇͨ¹ýRESTful½Ó¿ÚÀ´´æ´¢ºÍ¼ìË÷·Ç½á¹¹»¯µÄÊý¾Ý¶ÔÏó£¬ËüÊÇÒ»¸ö¸ßÈÝ´í¿ÉÉìËõµÄ´æ´¢¼Ü¹¹¡£

Block Storage£º´úÂëÃû:Cinder,ÔçÆÚÓÉNova,¼´Compute×é¼þÀ´Ìṩ,´ÓF°æ¿ªÊ¼¶ÀÁ¢³öÀ´,ËüÖ÷ҪΪVMÌṩ³Ö¾ÃµÄ¿é´æ´¢µÄ×é¼þ¡£

4. Identify£¬´úÂëÃû: Keystore ,ËüΪ³ý×ÔÉíÍâµÄÆäËüËùÓÐ×é¼þÌṩÁËÒ»¸öÈÏÖ¤ºÍÊÚȨµÄ·þÎñ¼°¶Ëµã±à¼·þÎñ,¼´ÀàËÆÓëĿ¼·þÎñµÄ¹¦ÄÜ,¿Éͨ¹ýËü¼ìË÷ËùÓÐ×é¼þµÄ·ÃÎÊ·¾¶¡£

5. Image£¬´úÂëÃû£ºGlance£¬ËüÊÇ×÷ΪSwiftµÄǰ¶Ë,ÓÃÀ´Ìṩ´æ´¢¶ÔÏóÔªÊý¾Ý¼ìË÷µÄ,¼òµ¥Ëµ:¼´VMÆô¶¯Ç°ÐèÒªÖªµÀ´ÅÅ̾µÏñÎļþ´æÔÚÄÄ,Ëü¾ÍÐèÒª·ÃÎÊImage·þÎñÀ´¼ìË÷,Image·þÎñÉÏ´æ´¢ÁËËùÓÐSwiftµÄ´æ´¢Î»ÖÃÐÅÏ¢£¬Ëü»á¸æËßVMclientµ½ÄÄÈ¥ÏÂÔØ¾µÏñ,È»ºó,VMclientÔÙ×Ô¼ºÈ¥ÕÒ¡£

6. Dashboard£¨Óû§½»»¥½çÃæ£©(Horizon) £ºËüÊÇÒ»¸öÓëOpenStack¸ö×é¼þ½»»¥µÄ»ùÓÚWebµÄ·ÃÎʽӿڡ£

7. Telemetry,´úÂëÃû:Ceilometer, ¼à¿ØºÍ¼ÆÁ¿VM,¼ÆÁ¿:¼´¸ù¾ÝÓû§Ê¹ÓÃVMµÄ×ÊÔ´À´ÊÕ·Ñ,Èç:ÄãʹÓÃÁ˶àÉÙRAM¡¢CPU¡¢ÍøÂç´ø¿í¡¢´ÅÅ̿ռäµÈµÈ¡£

8. Orachestration:´úÂëÃû:Heat, »ùÓÚÄ£°å¸ñʽ»òAWSµÄCloudFormationÄ£°å¸ñʽÀ´ÊµÏÖ¿ìËÙ½«¶à¸ö×ÊÔ´Áª¶¯ÆðÀ´,Íê³Éͳһ·þÎñ¹¦ÄÜ.¼òµ¥Àí½â:»ùÓÚÄ£°åÀ´ÊµÏÖϵͳ¹ÜÀí.

9. Database: ´úÂëÃû:Trove, ÓÃÀ´ÌṩDBaaSµÄ×é¼þ¡£

10.Data processing: ´úÂëÃû:Sahara(ɳ¹þÀ­), ÓÃÓÚÔÚOpenStackÖÐʵÏÖHadoopµÄ°´Ðè¿ÉÉìËõµÄ¹ÜÀí¡£

OpenStack¸÷×é¼þ¼äµÄ½»»¥Í¼

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¸÷×é¼þ¼ä½»»¥µÄ¼òÂÔÃèÊö:

1.ͨ¹ýDashboard/CLI(OpenStackÃüÁîÐнӿÚ)/×Ô¼º¿ª·¢µÄ´´½¨VMµÄ½çÃæ,ÒªÆô¶¯VM,ÐèÏȵ½KeystoreÈÏÖ¤²¢µÇ¼,½Ó×ÅÓûñµÃµÄToken,À´·ÃÎÊNova-API.

2.Nova-APIËüÊǽÓÊÕÓû§ÇëÇóµÄµ÷ÓýӿÚ,ËüÐèÒª¼àÌýÔÚÒ»¸öÌ×½Ó×ÖÉÏ,À´Í¨¹ýTCP/IPЭÒéÀ´·ÃÎÊ.µ±Dashboard/CLI·¢¹ýÀ´ÇëÇóºó,Nova-API»áÏÈÑéÖ¤ËüµÄTokenÊÇ·ñºÏ·¨,ÈôºÏ·¨Ôò½ÓÊÕÇëÇó¡£½Ó×ÅÏòNova-DB(MySQL)ÇëÇó²éѯ¸ÃVM,Nova-DB´ÓÒÑ´´½¨µÄVMÖвéѯ,ÈôÓÐÒªÆô¶¯µÄVMÔò»ñÈ¡¸ÃVMµÄÐÅÏ¢(Èç:ʵÀýÃû/RAM´óС/CPU/´ÅÅ̵ÈÐÅÏ¢),²¢½«ÕâЩÐÅÏ¢·µ»Ø¸øNova-API¡£

3.µ±Nova-API»ñµÃµÄVMµÄÐÅÏ¢ºó,Nova-API»á½«¸ÃVMÐÅÏ¢×éÖ¯³ÉHypervisor»òNova-computeÉϽèÖúHypervisorÀ´²Ù×÷VMµÄÌØ¶¨ÇëÇó°ü,²¢·¢Ë͸øHypervisor»òNova-compute,ÓÉËüÀ´¸ºÔð²Ù×÷VM, Nova-APIºÍNova-computeµÄ½»»¥ÊÇÒì²½µÄ,ËüÃÇÖмä¸ô×ÅÒ»¸ö¶ÓÁÐ.;

¡¾×¢: Nova-APIËü½öÊÇÓÃÀ´½ÓÊÕVM²Ù×÷ÇëÇó,ÑéÖ¤ÊÇ·ñÓÐȨÏÞ²Ù×÷VM,²¢»ñÈ¡VMÐÅÏ¢½»¸øHypervisorÀ´Íê³ÉVMµÄʵ¼Ê¹ÜÀí²Ù×÷.¡¿

4.Nova-API½«Ìض¨ÇëÇó°ü¶ªÈë¶ÓÁкó,Nova-Scheduler»á»ñµÃÕâЩÇëÇó,²¢Îª¸ÃÇëÇóµ÷¶ÈÑ¡ÔñÔËÐнڵã,Íê³Éºó,Nova-scheduler»á½«¸Ãµ÷¶ÈÐÅÏ¢ÔٴζªÈë¶ÓÁÐÖÐ,ͬʱÏòNova-DB·¢ËÍVMÒÑÆô¶¯µÄ¸üÐÂÐÅÏ¢,Nova-DB¸üÐÂÍê¸ÃVMµÄ״̬ºó,»á֪ͨNova-scheduler.

5.Nova-compute¿ÉÒÔ¿´³ÉÊǾßÌåµÄÒ»¸öÎïÀíʵÌå»ú,Ëü»á´Ó¶ÓÁÐÖлñÈ¡Nova-scheduler·¢³öµÄµ÷¶ÈÐÅÏ¢,²¢ÅжÏÊÇ·ñÊÇ×Ô¼ºµÄÈÎÎñ,ÈôÊÇÔò»ñÈ¡¸ÃÆô¶¯VMµÄÈÎÎñ,²¢Éú³ÉVMµÄÒÑÔÚÆô¶¯ÖеÄ״̬ÐÅÏ¢,ÔÚ¶ªÈë¶ÓÁÐÖС£

6.µ±Nova-conductor·¢ÏÖNova-compute¶ªÈë¶ÓÁÐÖеÄVM״̬¸üÐÂÐÅÏ¢ºó,Ëü»á¶ÁÈ¡¸ÃÐÅÏ¢,²¢½«¸ÃÐÅÏ¢·¢¸øNova-DBÀ´¸üиÃVMµÄ״̬,µ±Nova-DB¸üÐÂÍê³Éºó£¬Nova-DB»á֪ͨNova-conductor,½Ó×ÅNova-conductor»á½«¸ÃÐÅÏ¢¶ªÈë¶ÓÁÐ,µ±Nova-compute¼ì²âµ½Nova-conductor¶ªÈëµÄ¸üгɹ¦µÄÐÅÏ¢ºó£¬Nova-compute±ã¿ªÊ¼½øÐнÓÏÂÀ´µÄVMÆô¶¯²½Öè¡£

7.µ±ÖªµÀVM¸üÐÂÐÅÏ¢ÒѾ­Íê³Éºó,Nova-compute¿ªÊ¼Ïòglance-APIÇëÇóÆô¶¯¸ÃVMµÄ´ÅÅ̾µÏñ,Õâʱglance-API»áÏÈ´Óͨ¹ýglance-registryÀ´²éѯglance-DB¿´ÊÇ·ñ´æÔÚ¸ÃVMµÄ´ÅÅÌÐÅÏ¢,ÈôÓÐÔòglance-registry»á½«¸Ã´ÅÅ̾µÏñÐÅÏ¢·µ»Ø¸øglance-API,È»ºó£¬glance-API»áÏȵ½KeystoreÑéÖ¤¸ÃNova-computeÌṩµÄTokenÊÇ·ñºÏ·¨,ÈôºÏ·¨,Ôòͨ¹ý¸ÃVM´ÅÅ̾µÏñÐÅÏ¢µ½Image StoreÖÐÈ¥ÏÂÔØ¸ÃVMÆô¶¯µÄ´ÅÅ̾µÏñÎļþ,²¢·µ»Ø¸øNova-compute¡£

8.quantum-server: ËüÊǸºÔðΪVM´´½¨ÍøÂç»ù´¡ÉèÊ©µÄ,Èç:¹¹½¨ÐéÄâÍøÇÅ,ÐéÄâ·ÓÉÆ÷²¢Ìí¼ÓÏàӦת·¢¹æÔò,ÉõÖÁÊÇNAT; quantum-serverÊÇÒ»¸ö·Ç³£·±Ã¦µÄϵͳ,ÒòΪËüÐèҪΪÿ¸öVM´´½¨ÍøÂç»ù´¡ÉèÊ©,µ«quantum-server²¢²»Ö±½ÓΪVM´´½¨ÍøÂç»ù´¡ÉèÊ©,¶øÊǽ«ÇëÇó¶ªÈëµ½quantum×ÓϵͳÄÚ²¿µÄ¶ÓÁÐÖС£

9.ÏàÓ¦µÄquantum-plugin»á´Óquantum×ÓϵͳÄÚ²¿µÄ¶ÓÁÐÖжÁÈ¡¹¹½¨ÍøÂçÉèÊ©µÄÐÅÏ¢,²¢Í¨¹ý²éѯQuantum-DBÀ´ÅжÏÄÇЩ²¿·ÖÔÚÕæÕýÔËÐÐVMµÄNova-computeÉÏ´´½¨(Èç:´´½¨ÍøÇžÍÐèÒªÔÚ±¾µØ´´½¨.)£¬ÄÇЩÔÚquantumÉÏ´´½¨,ÈôÐèÒªÔÚÔËÐÐVMµÄ½ÚµãÉÏ´´½¨,Ôòquantum-plugin»á½«ÕâЩÐÅÏ¢¶ªÈëÄÚ²¿¶ÓÁÐÖУ¬Nova-computeÉÏÔËÐеÄquantum-agent»á´ÓquantumÄÚ²¿¶ÓÁÐÖлñµÃÕâЩÐÅÏ¢,²¢ÔÚ±¾µØ´´½¨ÏàÓ¦µÄÍøÂç»ù´¡ÉèÊ©£¬Íê³Éºó£¬quantum-agent»á½«Íê³ÉÐÅÏ¢·¢Ë͸øQuantum-DBÀ´¸üиÃÍøÂç»ù´¡ÉèÊ©µÄ״̬ÐÅÏ¢¡£¡¾×¢:quantum-serverÒ²»áÔÚÊÕµ½Nova-computeµÄÇëÇóµ½KeystoreÉÏÈ¥ÑéÖ¤ÊÇ·ñÓкϷ¨¡£¡¿×îºó£¬quantum-server»áͨ¸æNova-computeÍøÂçÒѾ­¹¹½¨Íê³É¡£

10.Nova-compute»á´Ó»ñµÃµÄÆô¶¯VMµÄÐÅÏ¢Öп´ÊÇ·ñÐèÒª¼ÓÔØËüÔø¾­¹ØÁª¹ýµÄBlockÉ豸,ÈôÓÐÔòÏòcinder-API·¢ÆðÇëÇó,cinder-API»áÏȽ«ÇëÇóÐÅÏ¢·¢¸øcinder-volume,ÓÉËüÀ´²éѯCinder-DB¿´ÊÇ·ñ´æÔÚNova-computeÇëÇóµÄBlockÉ豸,ÈôÓÐÔòcinder-volume»á֪ͨcinder-API,cinder-APIÔÚÏòKeystore·¢ÆðÑéÖ¤ÇëÇó,Ñé֤ͨ¹ýºó£¬cinder-api»áÖ±½Ó½«BlockÉ豸ÐÅÏ¢·µ»Ø¸ønova-compute,ÈôÕâÊÇÒ»¸ö´´½¨BlockµÄÇëÇó£¬Ôòcinder-volume»á½«BlockÐÅÏ¢¶ªÈëcinderÄÚ²¿¶ÓÁÐÖÐ,ÓÉcinder-scheduler´Ócinder-DBÖлñÈ¡ºó¶Ë´æ´¢µÄÐÅÏ¢£¬²¢¸ù¾ÝÒª´´½¨VolumeµÄ´óС£¬VolumeType£¬ËùÐè¾ßÓеÄÌØÐÔµÈÐÅÏ¢£¬´Óºó¶Ë´æ´¢Ö÷»úÖÐÑ¡³öÒ»¸ö×îÆ¥ÅäµÄ£¬²¢½«½á¹ûдÈëcinder¶ÓÁÐÖУ¬cinder-volumeͨ¹ý¸ÃÐÅÏ¢ÔÚ´æ´¢½ÚµãÉϵ÷ÓÃÏàÓ¦µÄ´æ´¢Çý¶¯´´½¨volume£¬´´½¨Íê³Éºó½«ÕâЩÐÅϢдÈëcinder-dbÖУ¬×îºócinder-volume¸æËßcinder-api£¬cinder-apiÔÚ·µ»ØÐÅÏ¢¸ønove-compute.

Controller Node + Network Node + Compute Node ÕâÖÖÈý½ÚµãOpenStack¼Ü¹¹ÊÇOpenStackµÄ×îС½á¹¹¡£

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2.Image Service.

3.computeµÄNova Management¡£

4.Networking: Neutron server, ML2 Plug-in.

5.Dashboard £ºÍ¼ÐιÜÀí½çÃæ

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1.Database MySQL or MariaDB

2.Message Broker: RabbitMQ or Qpid£¬ËüÊÇÓÃÀ´Îª»ù´¡·þÎñºÍÊý¾Ý¿âÁ¬½ÓÌṩ»º´æÇøµÄ¡£

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ÒÔ±ãÍⲿ¿Éµ÷ÓÃCinderÌṩµÄBlock Storage»òObject Storage£¬ÒÔ¼°Image Service.

Network Node:

ÐèÒªÌṩ»ù´¡µÄNetworking·þÎñ,¸Ã·þÎñ°üº¬:

ML2 Plug-in(µÚ¶þ²ã²å¼þ),

Layer2 Agent(µÚ¶þ²ã´úÀí:OVS): OVSÊÇÓÃÀ´¹¹½¨ÇÅ¡¢VLAN¡¢VxLAN¡¢GRE¡¢ÓëNetwork Node½ÚµãͨОùÓÐËüÀ´Íê³É¡£

Layer3 Agent(µÚÈý²ã´úÀí):´´½¨NAT NS²¢¹¹½¨NAT¹æÔò,iptables¹ýÂ˹æÔò¡¢Â·ÓÉת·¢¹æÔòµÈ

DHCP Agent:ÓÃÀ´ÌṩDHCP·þÎñ,ΪVMÌṩ¶¯Ì¬µØÖ··ÖÅä¹ÜÀí¡£

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1.Management ½Ó¿Ú¡£

2.ÓëʵÀý¹¹½¨ËíµÀµÄ½Ó¿Ú.

3.ÓëÍâÍøÁ¬½ÓµÄ½Ó¿Ú¡£

Compute Node:

ËüÊÇÔËÐÐVMµÄ»ù±¾½Úµã¡£Ëü¿ÉÒÔÓзdz£¶à¡£

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1.Compute(¼ÆËã·þÎñ):Nova Hypervisor; KVM or QEMU

2.Networking: ML2 Plug-in, Layer2 Agent(OVS)

ËüÐèÒªÁ½¸öÍø¿¨½Ó¿Ú:

1. Management½Ó¿Ú

2.¹¹½¨TunnelµÄ½Ó¿Ú¡£

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