Unix1998
later add
博文
(2024-05-03 16:08:15)
thefourmostcommonlyusedHTTPmethods(alsoreferredtoasverbs)are: GET:Usedtoretrievedatafromtheserver.Itshouldonlyretrievedataandshouldhavenoothereffectontheserver. POST:Usedtosenddatatotheservertocreateanewresource.Itcanalsobeusedtosubmitformdatatotheserver. PUT:Usedtoupdateanexistingresourceontheserver.Theentireresourceisreplacedwiththenewrepresentationprovidedintherequest. PATCH:Usedtoupdate...[阅读全文]
(2024-04-29 16:29:02)
Here'sageneraloverviewofthestepsinvolved: InstallPostgreSQLorMySQL:Dependingonyourpreferenceandrequirements,youcanchooseeitherPostgreSQLorMySQLasthebackenddatabaseforAirflow.Installthechosendatabasesystemfollowingitsinstallationinstructions. CreateaDatabase:AfterinstallingPostgreSQLorMySQL,createanewdatabaseforAirflowtouse.Youcandothisusingtherespectivedatabasemanagementtoolsorcommand-linei...[阅读全文]
(2024-04-29 16:27:10)
fromairflowimportDAG
fromairflow.operators.ssh_operatorimportSSHOperator
fromdatetimeimportdatetimedefault_args={
'owner':'airflow',
'depends_on_past':False,
'start_date':datetime(2024,4,29),
'email_on_failure':False,
'email_on_retry':False,
'retries':1
}dag=DAG('ssh_example',default_args=default_ar...[阅读全文]
fromairflow.operators.ssh_operatorimportSSHOperator
fromdatetimeimportdatetimedefault_args={
'owner':'airflow',
'depends_on_past':False,
'start_date':datetime(2024,4,29),
'email_on_failure':False,
'email_on_retry':False,
'retries':1
}dag=DAG('ssh_example',default_args=default_ar...[阅读全文]
(2024-04-29 16:25:17)
BashOperator:ThisoperatorallowsyoutoexecuteabashcommandorscriptasataskwithinyourDAG. PythonOperator:ThisoperatorenablesyoutorunarbitraryPythonfunctionsastaskswithinyourDAG. Besidesthesetwo,Airflowprovidesawiderangeofoperatorstosuitvariousneeds.Someoftheothercommonlyusedoperatorsinclude: BranchPythonOperator:ThisoperatorallowsyoutoexecutedifferenttasksinyourDAGbasedontheresultofaPythonfunction...[阅读全文]
(2024-04-28 16:54:08)
1.Classmethods(using@classmethoddecorator): Purpose:Classmethodsoperateontheclassitselfratherthanspecificinstances.Theyareoftenusedfor: Factorymethods:Creatingobjectswithdifferentconfigurationsbasedonprovidedarguments. Utilityfunctions:Performingactionsrelatedtotheclassasawhole,suchasvalidationordatamanipulation. Calling:Youcallclassmethodsusingtheclassnamefollowedbyadotandthemethodname(e.g.,...[阅读全文]
(2024-04-26 14:13:12)
IAM(IdentityandAccessManagement)typicallyencompassestwomaincomponents:IdentityManagementandAccessManagement.1.**IdentityManagement(IDM)**:
-**UserProvisioningandDe-provisioning**:Managingthelifecycleofuseraccounts,includingcreating,modifying,andremovingthem.
-**Authentication**:Verifyingtheidentityofusersattemptingtoaccessresources,oftenthroughpasswords,biometrics,ormulti-factorauthenticat...[阅读全文]
-**UserProvisioningandDe-provisioning**:Managingthelifecycleofuseraccounts,includingcreating,modifying,andremovingthem.
-**Authentication**:Verifyingtheidentityofusersattemptingtoaccessresources,oftenthroughpasswords,biometrics,ormulti-factorauthenticat...[阅读全文]
(2024-04-26 10:47:44)
InOpenStack,eachservicetypicallyhasaprojectnameorcodenamethatisusedinternallywithintheOpenStackcommunityandsometimesexternallybyusersandoperators.HerearesomeofthecoreOpenStackservicesalongwiththeirprojectnames:1.**Nova**:NovaisthecomputeserviceinOpenStack,responsibleformanagingandprovisioningvirtualmachines(VMs).Itsprojectnameis"Nova."2.**Swift**:SwiftistheobjectstorageserviceinOpenStack...[阅读全文]
(2024-04-26 10:41:42)
GoogleCloudPlatform(GCP)offersavarietyofcomputing,storage,pipeline,andotherpopularservices.Herearesomeofthemostcommonlyusedones:1.**ComputeEngine**:Thisserviceprovidesvirtualmachines(VMs)thatrunonGoogle'sinfrastructure.It'ssimilartoAmazonEC2inAWS.2.**AppEngine**:Aplatform-as-a-service(PaaS)offeringthatallowsdeveloperstobuildanddeployapplicationswithoutmanagingtheunderlyinginfrastructure.3....[阅读全文]
(2024-04-25 17:47:02)
whenweinstallmysql,postgresqlpacakage,weneedinstallmysql-develandlibpq-devel,pythonneedbinaryofthe2package
InRedhat,wecanrun:
$sudodnfinstallgccmysql-develpython3-devel,
ifwemeetthesimilarissueswhenrun"pipinstallpsycopg2"(thisispythonPostgresqlpkg)
error:pg_configcannotbefound
wecanrun:
$sudodnfinstalllibpq-devel
whentheabovestepisfinished,andgood,
thenrun
...[阅读全文]
(2024-04-22 08:36:51)
TheOracleIdentityandAccessManagementSuitePlus(OracleIAMSuitePlus)typicallyincludesacomprehensivesetofcomponentsaimedatprovidingorganizationswithrobustidentityandaccessmanagementcapabilities.Thesecomponentsaredesignedtoaddressvariousaspectsofidentitygovernance,accessmanagement,anddirectoryservices.Whilethespecificcomponentsmayvarybasedontheversionandconfigurationofthesuite,somecommoncomponentsinclu...[阅读全文]
