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A comment on It's not always DNS – unless it is. Parent comment

Re:It's not always DNS – unless it is by remram on Friday December 22, 2023 @10:45AM (#38735199)
The options for that are:

* dnsPolicy: Default

* enableServiceLinks: true (the default)

Then you can use MYDATABASENAME_SERVICE_HOST from the environment and there is no CoreDNS in the path at all.

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Re:It's not always DNS – unless it is by eptcyka on Friday December 22, 2023 @11:31AM (#38735761)
If I restart my DB, will the database service host env var also be updated? Will restarting a DB or changing the IP of a DB will also imply a restart of all of the services that need access to the DB?
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Re:It's not always DNS – unless it is by remram on Friday December 22, 2023 @11:45AM (#38735907)
The service's ClusterIP will not change.

Unless you want to also get rid of kube-proxy, in addition to CoreDNS; in that case you don't get ClusterIPs for services.

To be honest kube-proxy and CoreDNS are probably the only components I haven't had problems with on my cluster.

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