# Controller HA and cloudstack

**URL:** <https://forums.linbit.com/t/controller-ha-and-cloudstack/558>\
**Category:** LINSTOR\
**Tags:** drbd, linstor, drbd-reactor\
**Created:** [January 19, 2025, 4:38am UTC](https://forums.linbit.com/t/controller-ha-and-cloudstack/558 "2025-01-19T04:38:20Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![rp9](https://yyz1.discourse-cdn.com/flex003/user_avatar/forums.linbit.com/rp9/32/38_2.png) [@rp9](https://forums.linbit.com/u/rp9)\
**Post date:** [January 21, 2025, 11:39am UTC](https://forums.linbit.com/t/controller-ha-and-cloudstack/558/2 "2025-01-21T11:39:30Z")

</div>

You add the ocf IPaddr2 to the `linstor_db.toml` `start` section. like this:

```auto
"ocf:heartbeat:IPaddr2 service_ip cidr_netmask=24 ip=10.0.0.99",

```

Then you can use this service ip in CloudStack

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