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ssh: increase server startup timeout to 45m for GPU accelerators #5569

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ssh: increase server startup timeout to 45m for GPU accelerators #5569

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ssh: increase server startup timeout to 45m for GPU accelerators
anton-107 Jun 12, 2026
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Add NEXT_CHANGELOG entry
anton-107 Jun 12, 2026
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1 change: 1 addition & 0 deletions NEXT_CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@

### CLI
* Show a once-per-day notice after a command when a newer CLI release is available, with a link to the release and the upgrade command for the detected install method. Suppressed for non-interactive/CI runs, JSON output, the Databricks Runtime, and development builds, and can be disabled with `DATABRICKS_CLI_DISABLE_UPDATE_CHECK` ([#5470](https://github.com/databricks/cli/pull/5470)).
* Increase the SSH server startup timeout from 10 to 45 minutes when a GPU accelerator is requested via `databricks ssh connect --accelerator` ([#5569](https://github.com/databricks/cli/pull/5569)).

### Bundles
* Remove API enum values and types that are still in development from the `databricks-bundles` Python package; these were never accepted by the backend ([#5484](https://github.com/databricks/cli/pull/5484)).
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8 changes: 7 additions & 1 deletion experimental/ssh/cmd/connect.go
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Expand Up @@ -90,6 +90,12 @@ Connect to a dedicated cluster:
if connectionName == "" && clusterID == "" && !proxyMode {
connectionName = client.GenerateDefaultConnectionName(wsClient.Config.Host, accelerator)
}
// Serverless GPU compute can take much longer to provision than CPU compute,
// so allow extra time for the SSH server job to start.
startupTimeout := taskStartupTimeout
if accelerator != "" {
startupTimeout = gpuTaskStartupTimeout
}
opts := client.ClientOptions{
Profile: wsClient.Config.Profile,
ClusterID: clusterID,
Expand All @@ -103,7 +109,7 @@ Connect to a dedicated cluster:
HandoverTimeout: handoverTimeout,
ReleasesDir: releasesDir,
ServerTimeout: max(serverTimeout, shutdownDelay),
TaskStartupTimeout: taskStartupTimeout,
TaskStartupTimeout: startupTimeout,
AutoStartCluster: autoStartCluster,
ClientPublicKeyName: clientPublicKeyName,
ClientPrivateKeyName: clientPrivateKeyName,
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17 changes: 9 additions & 8 deletions experimental/ssh/cmd/constants.go
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Expand Up @@ -9,12 +9,13 @@ const (
defaultHandoverTimeout = 30 * time.Minute
defaultEnvironmentVersion = 4

serverTimeout = 24 * time.Hour
taskStartupTimeout = 10 * time.Minute
serverPortRange = 100
serverConfigDir = ".ssh-tunnel"
serverPrivateKeyName = "server-private-key"
serverPublicKeyName = "server-public-key"
clientPrivateKeyName = "client-private-key"
clientPublicKeyName = "client-public-key"
serverTimeout = 24 * time.Hour
taskStartupTimeout = 10 * time.Minute
gpuTaskStartupTimeout = 45 * time.Minute
serverPortRange = 100
serverConfigDir = ".ssh-tunnel"
serverPrivateKeyName = "server-private-key"
serverPublicKeyName = "server-public-key"
clientPrivateKeyName = "client-private-key"
clientPublicKeyName = "client-public-key"
)
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