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Add cmd for downgrade (#173)

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This commit is contained in:
Sandeep Rajan 2019-05-21 11:38:22 -04:00 • committed by Chris O'Haver
parent 38ae5466f7
commit 617ccc1151
5 changed files with 63 additions and 4 deletions
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9
kubernetes/corefile-tool/README.md
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@ -12,6 +12,7 @@ Usage:
corefile-tool default --corefile <path> [--k8sversion <k8s-ver>]
corefile-tool deprecated --from <coredns-ver> --to <coredns-ver> --corefile <path>
corefile-tool migrate --from <coredns-ver> --to <coredns-ver> --corefile <path> [--deprecations <true|false>]
corefile-tool downgrade --from <coredns-ver> --to <coredns-ver> --corefile <path>
corefile-tool released --dockerImageId <id>
corefile-tool unsupported --from <coredns-ver> --to <coredns-ver> --corefile <path>
corefile-tool validversions
@ -26,7 +27,9 @@ The following operations are supported:
- `deprecated`: returns a list of plugins/options in the Corefile that have been deprecated, removed, ignored or is a new default plugin/option.
- `migrate`: updates your CoreDNS corefile to be compatible with the `-to` version. Setting the `--deprecations` flag to `true` will migrate plugins/options as soon as they are announced as deprecated. Setting the `--deprecations` flag to `false` will migrate plugins/options only once they are removed (or made a no-op). The default is `false`.
- `migrate`: updates your CoreDNS corefile to be compatible with the `-to` version. Setting the `--deprecations` flag to `true` will migrate plugins/options as soon as they are announced as deprecated. Setting the `--deprecations` flag to `false` will migrate plugins/options only once they are removed (or made a no-op). The default is `false`.
- `downgrade` : downgrades your CoreDNS corefile to be compatible with the `-to` version. It will not restore plugins/options that might have been removed or altered during an upward migration.
- `released`: determines if the `--dockerImageID` was an official CoreDNS release or not. Only official releases of CoreDNS are supported by the tool.
@ -63,4 +66,8 @@ corefile-tool migrate --from 1.4.0 --to 1.5.0 --corefile /path/to/Corefile --de
# that are present in the current Corefile.
corefile-tool migrate --from 1.2.2 --to 1.3.1 --corefile /path/to/Corefile --deprecations false
```
```bash
# Downgrade CoreDNS from v1.5.0 to v1.4.0
corefile-tool downgrade --from 1.5.0 --to 1.4.0 --corefile /path/to/Corefile
```