- NAME
-
- gcloud beta emulators spanner start - start a local Cloud Spanner emulator
- SYNOPSIS
-
-
gcloud beta emulators spanner start[--enable-fault-injection=ENABLE_FAULT_INJECTION] [--host-port=HOST_PORT] [--rest-port=REST_PORT] [--use-docker=USE_DOCKER] [GCLOUD_WIDE_FLAG …]
-
- DESCRIPTION
-
(BETA)This command starts a local Cloud Spanner emulator. - EXAMPLES
- To start a local Cloud Spanner emulator, run:
gcloud beta emulators spanner start - FLAGS
-
-
--enable-fault-injection=ENABLE_FAULT_INJECTION - If true, the emulator will randomly inject faults into transactions. This facilitates application abort-retry testing.
-
--host-port=HOST_PORT - The host:port to which the emulator should be bound. The default value is localhost:9010. Note that this port serves gRPC requests. To override the default port serving REST requests, use --rest-port. If using Docker to run the emulator, the host must be specified as an ipaddress.
-
--rest-port=REST_PORT - The port at which REST requests are served. gcloud uses REST to communicate with the emulator. The default value is 9020.
-
--use-docker=USE_DOCKER - Use the Cloud Spanner emulator docker image even if the platform has a native binary available in the gcloud CLI. Currently we only provide a native binary for Linux. For other systems, you must install Docker for your platform before starting the emulator.
-
- GCLOUD WIDE FLAGS
- These flags are available to all commands:
--access-token-file,--account,--billing-project,--configuration,--flags-file,--flatten,--format,--help,--impersonate-service-account,--log-http,--project,--quiet,--trace-token,--user-output-enabled,--verbosity.Run
$ gcloud helpfor details. - NOTES
- This command is currently in beta and might change without notice. These
variants are also available:
gcloud emulators spanner startgcloud alpha emulators spanner start
gcloud beta emulators spanner start
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Last updated 2026-05-27 UTC.
