74 lines
4.3 KiB
Markdown
74 lines
4.3 KiB
Markdown
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---
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layout: "language"
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page_title: "Upgrading to Terraform v1.0"
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sidebar_current: "upgrade-guides-1-0"
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description: |-
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Upgrading to Terraform v1.0
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---
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# Upgrading to Terraform v1.0
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Terraform v1.0 is an unusual release in that its primary focus is on stability,
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and it represents the culmination of several years of work in previous major
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releases to make sure that the Terraform language and internal architecture
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will be a suitable foundation for forthcoming additions that will remain
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backward-compatible.
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Terraform v1.0.0 intentionally has no significant changes compared to Terraform
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v0.15.5. You can consider the v1.0 series as a direct continuation of the v0.15
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series.
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There are no special steps to take if you are upgrading from the previous
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major release, Terraform v0.15.
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You can also upgrade directly from Terraform v0.14 if you wish, although please
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still consider the notes from [the Terraform v0.15 upgrade guide](0-15.html).
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If you are affected by the notes in that upgrade guide, you will still need to
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take the steps described there but you can do so as part of upgrading to v1.0,
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without any need for an intermediate step of running Terraform v0.15.
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If you are currently using Terraform v0.13 or earlier then we strongly
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recommend upgrading one major version at a time until you reach Terraform v0.14,
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following the upgrade guides of each of those versions, because those earlier
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versions include mechanisms to automatically detect necessary changes to your
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configuration, and in some cases also automatically edit your configuration
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to include those changes. One you reach Terraform v0.14 you can then skip
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directly from there to Terraform v1.0.
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The following table summarizes the above recommendations. In each case, we
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recommend using the latest patch release from each major version in order to
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complete your upgrade.
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| Current Version | Recommendation |
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| -- | -- |
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| v0.10 or earlier | Refer to the upgrade guides for these historical versions until you have upgraded to the latest v0.11 release, then refer to the following item. |
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| v0.11 | Use [the `terraform 0.12checklist` command](0-12.html#pre-upgrade-checklist) to detect any situations that must be addressed before upgrading to v0.12, resolve them, and then upgrade to the latest v0.12 release and follow [the v0.12 Upgrade Guide](/upgrade-guides/0-12.html). |
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| v0.12 | Upgrade to the latest Terraform v0.13 release and then follow [the v0.13 upgrade guide](0-13.html) to upgrade your configuration and state for explicit provider requirements. |
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| v0.13 | Upgrade to the latest Terraform v0.14 release and attempt a normal Terraform run. If you encounter any new errors, refer to [the v0.14 upgrade guide](0-14.html) for resolution steps. |
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| v0.14 | Upgrade directly to the latest Terraform v1.0 release and attempt a normal Terraform run. If you encounter any new errors, refer to [the v0.15 upgrade guide](0-15.html) for resolution steps. |
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| v0.15 | Upgrade directly to the latest Terraform v1.0 release and attempt a normal Terraform run. Terraform v1.0 is a continuation of the v0.15 series, and so v1.0.0 and later are directly backward-compatible with Terraform v0.15.5. |
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-> If you run into any problems during upgrading, please feel free to start a
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topic in [the Terraform community forum](https://discuss.hashicorp.com/c/terraform-core),
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describing the problem you've encountered in enough detail that other readers
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may be able to reproduce it and offer advice.
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## Remote State Compatibility
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In a more complex system you might have multiple separate Terraform
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configurations that collaborate together using
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[the `terraform_remote_state` data source](/docs/language/state/remote-state-data.html).
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In that case, it's typical for some configurations to be applied with a new
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version before others do, causing differences in the state snapshot format
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between your different configurations.
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If you are upgrading from Terraform v0.14 or Terraform v0.15 to Terraform v1.0
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then you can upgrade your configurations in any order, because all three of
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these versions have intercompatible state snapshot formats.
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Upgrading from v0.13 or earlier in a multi-configuration environment may
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require more explicit planning to ensure state snapshot compatibility. Please
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refer to the previous release upgrade guides for more information, and upgrade
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only one major version at a time until you reach Terraform v0.14.
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