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Documentation/upgrades: highlight "--enable-v2=false"

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Signed-off-by: Gyuho Lee <leegyuho@amazon.com>
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Gyuho Lee 2019-08-13 15:16:28 -07:00
parent fb7981b6e5
commit 092ee6d321
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Documentation/upgrades/upgrade_3_4.md
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@ -35,6 +35,21 @@ OK
+etcdctl put foo bar
```
#### Make `ETCDCTL_API=3 etcdctl` default
[`etcd --enable-v2=false`](https://github.com/etcd-io/etcd/pull/10935) is now the default.
This means, unless `etcd --enable-v2=true` is specified, etcd v3.4 server would not serve v2 API requests.
If v2 API were used, make sure to enable v2 API in v3.4:
```diff
-etcd
+etcd --enable-v2=true
```
Other HTTP APIs will still work (e.g. `[CLIENT-URL]/metrics`, `[CLIENT-URL]/health`, v3 gRPC gateway).
#### Deprecated `etcd --ca-file` and `etcd --peer-ca-file` flags
`--ca-file` and `--peer-ca-file` flags are deprecated; they have been deprecated since v2.1.