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# generala
adamant-kite-43734
10/16/2023, 4:40 PMThis message was deleted.
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mammoth-memory-36508
10/16/2023, 5:09 PMIs it not possible to assign static IPs to these hosts? As far as I know, Kubernetes is very unhappy relying on DNS names and Rancher does not work at all as you've observed. Although, perhaps something has changed in that regard to help you.
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creamy-pencil-82913
10/16/2023, 5:21 PMYes, you need to create DHCP reservations for your nodes, or give them static IPs.
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delightful-jordan-42115
10/16/2023, 5:22 PMI was hoping that wasn't the case as network team is very stingy on static IP and network reservations.
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creamy-pencil-82913
10/16/2023, 5:23 PMcreamy-pencil-82913
10/16/2023, 5:24 PMthey don’t need to be static, just a DHCP reservation would work. As long as it gets the same IP when it restarts.
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little-grass-59515
10/16/2023, 5:54 PMJust ask the netop guys, rather be stingy or have it work. It really is a simple question
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delightful-jordan-42115
10/16/2023, 5:58 PMI sent them the link and screen shots. Netops can be stingy
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little-grass-59515
10/16/2023, 5:59 PMit has been a while since I worked in a larger group, but there has to be an awareness of basic needs to make it work. You can't run kubernetes with out ip's. It is a requirement not an optional need
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delightful-jordan-42115
10/16/2023, 6:03 PMThey feel that the tools should be able to handle DHCP's IP address without reservations as many customers are deploying in the cloud and getting provided dynamic IP's via DHCP and have no way of getting static. that is there reasoning
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little-grass-59515
10/16/2023, 6:04 PMThats when you go to managment.
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creamy-pencil-82913
10/16/2023, 6:21 PMWhen you deploy to a cloud provider, you get a dynamic private IP - but that IP doesn’t change as long as the instance is provisioned. It is not at all unusual for things to want an IP that doesn’t change randomly when nodes are shut down or rebooted, if they’re not prepared to accommodate DHCP reservations then they’re just being stubborn for its own sake.
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delightful-jordan-42115
10/16/2023, 7:18 PMgot my reservations.
delightful-jordan-42115
10/16/2023, 7:38 PMso follow on questions @creamy-pencil-82913 , is there a way to use a DNS Pool? Question comes from when a reconfigure or expansion is needed it pulls a new DHCP address during reconfiguration which requires manual reservation setting.
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creamy-pencil-82913
10/16/2023, 8:12 PMThat is below the level of anything Kubernetes is concerned about. That would be determined by how you are provisioning the underlying cluster nodes.