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consul: handle "not found" errors from Consul when deleting tokens (#17847) 

In Consul 1.15.0, the Delete Token API was changed so as to return an error when
deleting a non-existent ACL token. This means that if Nomad successfully deletes
the token but fails to persist that fact, it will get stuck trying to delete a
non-existent token forever.

Update the token deletion function to ignore "not found" errors and treat them
as successful deletions.

Fixes: #17833
This commit is contained in:
Tim Gross 2023-07-07 16:22:13 -04:00 committed by GitHub
parent 30a99926dc
commit 5025731ebe
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2 changed files with 6 additions and 1 deletions
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3
.changelog/17847.txt Normal file
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@ -0,0 +1,3 @@
```release-note:bug
consul: Fixed a bug where Nomad would repeatedly try to revoke successfully revoked SI tokens
```

4
nomad/consul.go
View File

@ -419,8 +419,10 @@ func (c *consulACLsAPI) singleRevoke(ctx context.Context, accessor *structs.SITo
return err
}
// Consul will no-op the deletion of a non-existent token (no error)
_, err := c.aclClient.TokenDelete(accessor.AccessorID, &api.WriteOptions{Namespace: accessor.ConsulNamespace})
if err != nil && strings.Contains(err.Error(), "Cannot find token to delete") {
return nil // Consul will error when deleting a non-existent token
}
return err
}