# Chef Backend 1.2.5 released

**URL:** <https://discourse.chef.io/t/chef-backend-1-2-5-released/10001>\
**Category:** Chef Release Announcements\
**Created:** [December 7, 2016, 7:41pm UTC](https://discourse.chef.io/t/chef-backend-1-2-5-released/10001 "2016-12-07T19:41:48Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ksubrama](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.chef.io/ksubrama/32/26_2.png) [@ksubrama](https://discourse.chef.io/u/ksubrama)\
**Post date:** [December 7, 2016, 7:41pm UTC](https://discourse.chef.io/t/chef-backend-1-2-5-released/10001/1 "2016-12-07T19:41:48Z")

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Hello Chefs!

We have a new release of Chef Backend for you that includes a number of performance tuning options and stability improvements. These improvements will help reduce the number of fail-over events in your environment that may occur due to transient network issues. All users of 1.1.2 and prior are encouraged to upgrade. You may find it at [https://downloads.chef.io/chef-backend](https://downloads.chef.io/chef-backend) .

Along with our new features, we have a number of tunable options. These flags are documented in detail in our docs page at [https://docs.chef.io/install\_server\_ha.html](https://docs.chef.io/install_server_ha.html)

- Followers will now fail if it falls too far behind leader.  
leaderl.health\_check.max\_bytes\_behind\_leader

- Health Checks can now fail up to a configurable number of times before triggering a failover.  
leaderl.health\_check.max\_elasticsearch\_failures  
leaderl.health\_check.max\_etcd\_failures  
leaderl.health\_check.max\_pgsql\_failures

- Etcd election reliability was increased and you have new configuration options to tweak it.  
etcd.election\_timeout  
etcd.heartbeat\_interval  
etcd.snapshot\_count

- We have also added a --force-basebackup to the pgsql-follow command. This allows for a more straightforward recovery procedure in cases where human intervention is needed.

We have also changed the default values of a few options:

- postgresql.shmmax and postgresql.shmall are no longer needed because we have upgraded to PostgreSQL 9.5
- leaderl.health\_check.interval\_seconds from 2 to 5 seconds.
- leaderl.leaderl\_ttl\_seconds from 10 to 30.
- etcd.heartbeat\_interval from 100 to 500 milliseconds.
- etcd.election\_timeout from 1000 to 5000 milliseconds.

Enjoy!