Hands-on: Try the Create Dynamic Expressions tutorial.
Terraform has detailed logs that you can enable by setting the TF_LOG
environment variable to any value. Enabling this setting causes detailed logs to appear on stderr
.
You can set TF_LOG
to one of the log levels (in order of decreasing verbosity) TRACE
, DEBUG
, INFO
, WARN
or ERROR
to change the verbosity of the logs.
Setting TF_LOG
to JSON
outputs logs at the TRACE
level or higher, and uses a parseable JSON encoding as the formatting.
Logging can be enabled separately for Terraform itself and the provider plugins
using the TF_LOG_CORE
or TF_LOG_PROVIDER
environment variables. These take
the same level arguments as TF_LOG
, but only activate a subset of the logs.
To persist logged output you can set TF_LOG_PATH
in order to force the log to always be appended to a specific file when logging is enabled. Note that even when TF_LOG_PATH
is set, TF_LOG
must be set in order for any logging to be enabled.
If you find a bug with Terraform, please include the detailed log by using a service such as gist.