Environment Variables
The environment variable reference. Find what any env var means, where it's set, and how to use it.
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Azure40
APPLICATIONINSIGHTS_CONNECTION_STRINGmonitoring
AZURE_AD_CLIENT_IDauthentication
AZURE_AD_CLIENT_SECRETauthentication
AZURE_AD_TENANT_IDauthentication
AZURE_AUTHORITY_HOSTauthentication
AZURE_CLIENT_CERTIFICATE_PATHauthentication
AZURE_CONTAINER_REGISTRY_NAMEcontainers
AZURE_CONTAINER_REGISTRY_PASSWORDcontainers
AZURE_COSMOS_DB_CONNECTION_STRINGdatabase
AZURE_COSMOS_DB_KEYdatabase
AZURE_DEVOPS_ORG_URLdevops
AZURE_DEVOPS_PATdevops
AZURE_EVENT_HUB_CONNECTION_STRINGmessaging
AZURE_FEDERATED_TOKEN_FILEauthentication
AZURE_FUNCTIONS_ENVIRONMENTcompute
AZURE_KEY_VAULT_NAMEsecurity
AZURE_KEY_VAULT_URLsecurity
AZURE_OPENAI_API_KEYai
AZURE_OPENAI_ENDPOINTai
AZURE_REDIS_CACHE_HOSTcache
AZURE_REDIS_CACHE_KEYcache
AZURE_RESOURCE_GROUPresource-management
AZURE_SERVICE_BUS_CONNECTION_STRINGmessaging
AZURE_SIGNALR_CONNECTION_STRINGmessaging
AZURE_SQL_CONNECTION_STRINGdatabase
AZURE_STORAGE_ACCOUNTstorage
AZURE_STORAGE_CONNECTION_STRINGstorage
AZURE_STORAGE_KEYstorage
AZURE_SUBSCRIPTION_IDresource-management
AZURE_WEBAPP_NAMEcompute
AZURE_WEBAPP_RESOURCE_GROUPcompute
AzureWebJobsStoragecompute
FUNCTIONS_WORKER_RUNTIMEcompute
IDENTITY_ENDPOINTauthentication
IDENTITY_HEADERauthentication
MSI_ENDPOINTauthentication
MSI_SECRETauthentication
WEBSITE_HOSTNAMEcompute
WEBSITE_INSTANCE_IDcompute
WEBSITE_SITE_NAMEcompute
AWS40
_HANDLERlambda
_X_AMZN_TRACE_IDmonitoring
AWS_ACCESS_KEY_IDauthentication
AWS_CODECOMMIT_PROFILEdevops
AWS_CONFIG_FILEconfiguration
AWS_CONTAINER_CREDENTIALS_RELATIVE_URIauthentication
AWS_DEFAULT_OUTPUTconfiguration
AWS_DEFAULT_REGIONconfiguration
AWS_DYNAMODB_TABLEdatabase
AWS_EC2_METADATA_DISABLEDconfiguration
AWS_ECS_CLUSTERcontainers
AWS_ECS_TASK_DEFINITIONcontainers
AWS_ENDPOINT_URLconfiguration
AWS_EXECUTION_ENVlambda
AWS_LAMBDA_FUNCTION_MEMORY_SIZElambda
AWS_LAMBDA_FUNCTION_NAMElambda
AWS_LAMBDA_FUNCTION_VERSIONlambda
AWS_LAMBDA_LOG_GROUP_NAMElambda
AWS_LAMBDA_LOG_STREAM_NAMElambda
AWS_LAMBDA_RUNTIME_APIlambda
AWS_MAX_ATTEMPTSconfiguration
AWS_PAGERconfiguration
AWS_PROFILEconfiguration
AWS_REGIONconfiguration
AWS_RETRY_MODEconfiguration
AWS_ROLE_ARNauthentication
AWS_S3_BUCKETstorage
AWS_SDK_LOAD_CONFIGconfiguration
AWS_SECRET_ACCESS_KEYauthentication
AWS_SESSION_TOKENauthentication
AWS_SHARED_CREDENTIALS_FILEconfiguration
AWS_SNS_TOPIC_ARNmessaging
AWS_SQS_QUEUE_URLmessaging
AWS_STS_REGIONAL_ENDPOINTSconfiguration
AWS_WEB_IDENTITY_TOKEN_FILEauthentication
AWS_XRAY_DAEMON_ADDRESSmonitoring
ECS_CONTAINER_METADATA_URIcontainers
ECS_CONTAINER_METADATA_URI_V4containers
LAMBDA_RUNTIME_DIRlambda
LAMBDA_TASK_ROOTlambda
Node.js & Runtime21
BUN_INSTALLruntime
DENO_DIRruntime
HOSTnetworking
NODE_DEBUGdebugging
NODE_ENVruntime
NODE_EXTRA_CA_CERTSsecurity
NODE_ICU_DATAinternationalization
NODE_NO_WARNINGSruntime
NODE_OPTIONSruntime
NODE_PATHruntime
NODE_PENDING_DEPRECATIONruntime
NODE_REPL_HISTORYruntime
NODE_TLS_REJECT_UNAUTHORIZEDsecurity
npm_config_registrypackage-manager
npm_package_namepackage-manager
npm_package_versionpackage-manager
NPM_TOKENpackage-manager
PNPM_HOMEpackage-manager
PORTnetworking
UV_THREADPOOL_SIZEperformance
YARN_CACHE_FOLDERpackage-manager
Docker & Containers15
COMPOSE_FILEcompose
COMPOSE_HTTP_TIMEOUTcompose
COMPOSE_PROFILEScompose
COMPOSE_PROJECT_NAMEcompose
DOCKER_BUILDKITbuild
DOCKER_CERT_PATHsecurity
DOCKER_CLI_EXPERIMENTALconfiguration
DOCKER_CONFIGconfiguration
DOCKER_CONTENT_TRUSTsecurity
DOCKER_DEFAULT_PLATFORMconfiguration
DOCKER_HIDE_LEGACY_COMMANDSconfiguration
DOCKER_HOSTdaemon
DOCKER_SCAN_SUGGESTconfiguration
DOCKER_TLS_VERIFYsecurity
TESTCONTAINERS_DOCKER_SOCKET_OVERRIDEtesting
General / OS39
ALL_PROXYnetwork
COLORTERMterminal
CURL_CA_BUNDLEsecurity
DISPLAYdisplay
EDITORtools
FORCE_COLORterminal
GPG_TTYsecurity
HOMEsystem
HOSTNAMEsystem
HTTP_PROXYnetwork
HTTPS_PROXYnetwork
LANGlocale
LC_ALLlocale
LC_CTYPElocale
LOGNAMEsystem
NO_COLORterminal
NO_PROXYnetwork
OLDPWDsystem
PAGERtools
PATHsystem
PWDsystem
REQUESTS_CA_BUNDLEsecurity
SHELLsystem
SHLVLsystem
SSH_AGENT_PIDssh
SSH_AUTH_SOCKssh
SSL_CERT_FILEsecurity
TERMterminal
TERM_PROGRAMterminal
TMPDIRsystem
TZlocale
USERsystem
VISUALtools
WAYLAND_DISPLAYdisplay
XDG_CACHE_HOMExdg
XDG_CONFIG_HOMExdg
XDG_DATA_HOMExdg
XDG_RUNTIME_DIRxdg
XDG_STATE_HOMExdg
Google Cloud25
CLOUD_SQL_CONNECTION_NAMEdatabase
CLOUDSDK_AUTH_CREDENTIAL_FILE_OVERRIDEauthentication
CLOUDSDK_COMPUTE_REGIONconfiguration
CLOUDSDK_COMPUTE_ZONEconfiguration
CLOUDSDK_CORE_PROJECTconfiguration
FIREBASE_CONFIGconfiguration
FIREBASE_TOKENauthentication
FUNCTION_SIGNATURE_TYPEcompute
FUNCTION_TARGETcompute
GCLOUD_PROJECTconfiguration
GCLOUD_SERVICE_KEYauthentication
GCP_SERVICE_ACCOUNT_KEYauthentication
GCS_BUCKETstorage
GOOGLE_API_KEYauthentication
GOOGLE_APPLICATION_CREDENTIALSauthentication
GOOGLE_CLOUD_KEYFILE_JSONauthentication
GOOGLE_CLOUD_PROJECTconfiguration
GOOGLE_CLOUD_QUOTA_PROJECTconfiguration
GOOGLE_CLOUD_REGIONconfiguration
K_CONFIGURATIONcompute
K_REVISIONcompute
K_SERVICEcompute
PORTcompute
PUBSUB_SUBSCRIPTIONmessaging
PUBSUB_TOPICmessaging
Databases24
CASSANDRA_CONTACT_POINTScassandra
DATABASE_URLconnection
ELASTICSEARCH_URLsearch
MONGO_URLmongodb
MONGODB_URImongodb
MSSQL_SA_PASSWORDmssql
MYSQL_DATABASEmysql
MYSQL_HOSTmysql
MYSQL_PASSWORDmysql
MYSQL_PORTmysql
MYSQL_ROOT_PASSWORDmysql
MYSQL_USERmysql
PGCONNECT_TIMEOUTpostgresql
PGDATABASEpostgresql
PGHOSTpostgresql
PGPASSWORDpostgresql
PGPORTpostgresql
PGSSLMODEpostgresql
PGUSERpostgresql
REDIS_HOSTredis
REDIS_PASSWORDredis
REDIS_PORTredis
REDIS_URLredis
SQLITE_DATABASEsqlite
CI/CD & Build38
BUILD_NUMBERjenkins
BUILD_URLjenkins
CIgeneral
CI_COMMIT_REF_NAMEgitlab-ci
CI_COMMIT_SHAgitlab-ci
CI_JOB_TOKENgitlab-ci
CI_PIPELINE_IDgitlab-ci
CI_PROJECT_DIRgitlab-ci
CIRCLE_BRANCHcircleci
CIRCLE_BUILD_NUMcircleci
CIRCLECIcircleci
DEPLOY_URLnetlify
GITHUB_ACTIONSgithub-actions
GITHUB_ACTORgithub-actions
GITHUB_API_URLgithub-actions
GITHUB_BASE_REFgithub-actions
GITHUB_ENVgithub-actions
GITHUB_EVENT_NAMEgithub-actions
GITHUB_HEAD_REFgithub-actions
GITHUB_OUTPUTgithub-actions
GITHUB_REFgithub-actions
GITHUB_REPOSITORYgithub-actions
GITHUB_RUN_IDgithub-actions
GITHUB_SERVER_URLgithub-actions
GITHUB_SHAgithub-actions
GITHUB_TOKENgithub-actions
GITHUB_WORKFLOWgithub-actions
GITHUB_WORKSPACEgithub-actions
GITLAB_CIgitlab-ci
JENKINS_HOMEjenkins
JENKINS_URLjenkins
JOB_NAMEjenkins
NETLIFYnetlify
TRAVIStravis-ci
TRAVIS_BRANCHtravis-ci
VERCELvercel
VERCEL_ENVvercel
VERCEL_URLvercel