The following items are new for Chef server 12.13:

- **Supports Red Hat Enterprise Linux 6 on s390x (RHEL6/s390x)**
- **Disables the Solr4 Admin API/UI by default**
- **FIPS runtime flag exposed on RHEL systems** Setting `fips true`
    and reconfiguring will start the server in FIPS mode. Packages for
    other systems will not have the required OpenSSL FIPS module and
    will fail to start if reconfigured with `fips true`.

## New platform: RHEL6/s390x

Support for a new platform was added: Red Hat Enterprise Linux 6 on
s390x.

## Solr4 Admin API/UI disabled by default

With this release, the admin UI of Solr4 has been removed. The
underlying API has also been disabled. Users that depend on the admin
API endpoints can enable them via adding:

```ruby
opscode_solr4['enable_full_admin_api'] = true
```

to `chef-server.rb`.

## FIPS runtime flag exposed

The Chef Server package now exposes a `fips` configuration flag in
`chef-server.rb`. Setting `fips true` and reconfiguring will start the
server in FIPS mode. The default value of this flag is `false` except on
systems where FIPS is enabled at the Kernel where it defaults to `true`.

The only supported systems at this time for FIPS mode are RHEL. Packages
for other systems will be missing the required OpenSSL FIPS module and
will fail to start if reconfigured with `fips true`.