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Update upgrade-specific.html.md

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James Phillips 2017-07-17 14:11:08 -07:00 committed by GitHub
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@ -14,6 +14,14 @@ details provided for their upgrades as a result of new features or changed
behavior. This page is used to document those details separately from the
standard upgrade flow.
## Consul 0.9.0
#### Sciript Checks Are Now Opt-In
A new [`enable_script_checks`](/docs/agent/options.html#_enable_script_checks) configuration option was added, and defaults to `false`, meaning that in order to allow an agent to run health checks that execute scripts, this will need to be configured and set to `true`. This provides a safer out-of-the-box configuration for Consul where operators must opt-in to allow script-based health checks.
If your cluster uses script health checks please be sure to set this to `true` as part of upgrading agents. If this is set to `true`, you should also enable [ACLs](https://www.consul.io/docs/guides/acl.html) to provide control over which users are allowed to register health checks that could potentially execute scripts on the agent machines.
## Consul 0.8.0
#### Upgrade Current Cluster Leader Last