Mixed Authentication/Authorization Setup

    The way this can be done is by first preparing a basic trusted operator setup that could be used in the future, and then base from that configuration to create the NKEYS static config using the same shared public nkeys for the accounts and then use clustering routes to bridge the two different auth setups during the transition.

    For example, creating the following initial setup using NSC:

    This will then generate something like the following:

    1. ╭─────────────────────────────────────────────────────────────────╮
    2. │                            Accounts                             │
    3. ├──────┬──────────────────────────────────────────────────────────┤
    4. │ Name │ Public Key                                               │
    5. ├──────┼──────────────────────────────────────────────────────────┤
    6. │ A    │ ADFB2JXYTXOJEL6LNAXDREUGRX35BOLZI3B4PFFAC7IRPR3OA4QNKBN2 │
    7. │ B    │ ACWOMQA7PZTKJSBTR7BF6TBK3D776734PWHWDKO7HFMQOM5BIOYPSYZZ │
    8. │ SYS  │ ABKOWIYVTHNEK5HELPWLAT2CF2CUPELIK4SZH2VCJHLFU22B5U2IIZUO │
    9. ╰──────┴──────────────────────────────────────────────────────────╯
    1. ╭─────────────────────────────────────────────────────────────────╮
    2. │                              Users                              │
    3. ├──────┬──────────────────────────────────────────────────────────┤
    4. │ Name │ Public Key                                               │
    5. ├──────┼──────────────────────────────────────────────────────────┤
    6. │ test │ UAPOK2P7EN3UFBL7SBJPQK3M3JMLALYRYKX5XWSVMVYK63ZMBHTOHVJR │
    7. ╰──────┴──────────────────────────────────────────────────────────╯

    We could use this configuration as the initial starting configuration for an nkeys config now, where all the NKEYS users public nkeys are explicitly listed (centralized auth model).

    1. port = 4222
    3. cluster {
    4.   port = 6222
    6.   # We will bridge two different servers with different auth models via routes
    7.   # routes [ nats://127.0.0.1:6223 ]
    8. }
    10. system_account = ABKOWIYVTHNEK5HELPWLAT2CF2CUPELIK4SZH2VCJHLFU22B5U2IIZUO
    12. accounts {
    13.   # Account A
    14.   ADFB2JXYTXOJEL6LNAXDREUGRX35BOLZI3B4PFFAC7IRPR3OA4QNKBN2 {
    15.     nkey: ADFB2JXYTXOJEL6LNAXDREUGRX35BOLZI3B4PFFAC7IRPR3OA4QNKBN2
    16.     users = [
    17.       {nkey: "UAPOK2P7EN3UFBL7SBJPQK3M3JMLALYRYKX5XWSVMVYK63ZMBHTOHVJR" }
    20.   # Account B
    21.   ACWOMQA7PZTKJSBTR7BF6TBK3D776734PWHWDKO7HFMQOM5BIOYPSYZZ {
    22.   }
    24.   # Account SYS
    25.   ABKOWIYVTHNEK5HELPWLAT2CF2CUPELIK4SZH2VCJHLFU22B5U2IIZUO {
    26.   }
    27. }

    By using nsc it is possible to create a mem based resolver for the trusted operator setup:

    An example configuration from the second node with the trusted operator setup could then be:

    1. port = 4223
    3. cluster {
    4.   port = 6223
    5.   routes [ nats://127.0.0.1:6222 ]
    6. }
    8. # debug = true
    9. # trace = true
    11. # Operator
    12. operator = eyJ0eXAiOiJqd3QiLCJhbGciOiJlZDI1NTE5In0.eyJqdGkiOiJQNDJBSkFTVVA0TUdGRU1EQzVCRVVGUkM1MlQ1M05OTzRIWkhRNEdETVk0S0RZTFVRV0JBIiwiaWF0IjoxNTc0Mzc1OTE2LCJpc3MiOiJPQ09KSk5aSUNINkNHUU5LM1NRMzVXTFpXWkpDUkRBTFJIWjZPVzQ0RFpZVVdNVVYzV1BSSEZSRCIsIm5hbWUiOiJLTyIsInN1YiI6Ik9DT0pKTlpJQ0g2Q0dRTkszU1EzNVdMWldaSkNSREFMUkhaNk9XNDREWllVV01VVjNXUFJIRlJEIiwidHlwZSI6Im9wZXJhdG9yIiwibmF0cyI6e319.pppa9-xhWXJLSCCtqj_dqlvXKR7WlVCh0cqoZ6lr8zg3WlWM8U0bNf6FHw_67-wRS7jj0n4PuA0P0MAJdE3pDA
    14. system_account = ABKOWIYVTHNEK5HELPWLAT2CF2CUPELIK4SZH2VCJHLFU22B5U2IIZUO
    16. resolver = MEMORY
    18. resolver_preload = {
    19.   # Account "A"
    20.   ADFB2JXYTXOJEL6LNAXDREUGRX35BOLZI3B4PFFAC7IRPR3OA4QNKBN2: eyJ0eXAiOiJqd3QiLCJhbGciOiJlZDI1NTE5In0.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.zZBetgDN6nCFDVpwzF_124BPkc8amGPDnrOmiKUa12xski5zskUI0Y0OeIa1vTo0bkHIKTgM2QDYpmXUQOHnAQ
    22.   # Account "B"
    23.   ACWOMQA7PZTKJSBTR7BF6TBK3D776734PWHWDKO7HFMQOM5BIOYPSYZZ: eyJ0eXAiOiJqd3QiLCJhbGciOiJlZDI1NTE5In0.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.AnzziBwt5Tnphc2prONUUOpMpkkAlJHvCPaag0GUtTYPCHKDphcJrwtAHi4v5NOI6npjoes0F0MlrfnHqidDAg
    25.   ABKOWIYVTHNEK5HELPWLAT2CF2CUPELIK4SZH2VCJHLFU22B5U2IIZUO: eyJ0eXAiOiJqd3QiLCJhbGciOiJlZDI1NTE5In0.eyJqdGkiOiI1WVUyWkc1UkRTSU1TN1pGVE1MU0NZQUtLVkVFWUpPUlc0TDJPTlY3N1g1TlJZWkFGSkRRIiwiaWF0IjoxNTc0Mzc1OTE2LCJpc3MiOiJPQ09KSk5aSUNINkNHUU5LM1NRMzVXTFpXWkpDUkRBTFJIWjZPVzQ0RFpZVVdNVVYzV1BSSEZSRCIsIm5hbWUiOiJTWVMiLCJzdWIiOiJBQktPV0lZVlRITkVLNUhFTFBXTEFUMkNGMkNVUEVMSUs0U1pIMlZDSkhMRlUyMkI1VTJJSVpVTyIsInR5cGUiOiJhY2NvdW50IiwibmF0cyI6eyJsaW1pdHMiOnsic3VicyI6LTEsImNvbm4iOi0xLCJsZWFmIjotMSwiaW1wb3J0cyI6LTEsImV4cG9ydHMiOi0xLCJkYXRhIjotMSwicGF5bG9hZCI6LTEsIndpbGRjYXJkcyI6dHJ1ZX19fQ.5FrO4sZbWuFgRLuy7c1eQLUq_BQ4PNhIAN5A-sRLkYWmvlc4c_Y4VfTbgl5zhNzCxfvj9SxT7ySgphup2BiRAA
    26. }

    We have created at least one user, in this case with creds:

    1. -----BEGIN NATS USER JWT-----
    2. eyJ0eXAiOiJqd3QiLCJhbGciOiJlZDI1NTE5In0.eyJqdGkiOiJNRkM3V1E1N0hKUE9aWUVOTEhVRTZTWFVQTDVKTURWSkxIQzJRTkpYNUVJS0RGR1U1REhRIiwiaWF0IjoxNTc0Mzc1OTE2LCJpc3MiOiJBREZCMkpYWVRYT0pFTDZMTkFYRFJFVUdSWDM1Qk9MWkkzQjRQRkZBQzdJUlBSM09BNFFOS0JOMiIsIm5hbWUiOiJ0ZXN0Iiwic3ViIjoiVUFQT0syUDdFTjNVRkJMN1NCSlBRSzNNM0pNTEFMWVJZS1g1WFdTVk1WWUs2M1pNQkhUT0hWSlIiLCJ0eXBlIjoidXNlciIsIm5hdHMiOnsicHViIjp7ImFsbG93IjpbIl9JTkJPWC5cdTAwM2UiLCJfUl8iLCJfUl8uXHUwMDNlIiwidGVzdCIsInRlc3QuXHUwMDNlIl19LCJzdWIiOnsiYWxsb3ciOlsiX0lOQk9YLlx1MDAzZSIsIl9SXyIsIl9SXy5cdTAwM2UiLCJsYXRlbmN5Lm9uLnRlc3QiLCJ0ZXN0IiwidGVzdC5cdTAwM2UiXX19fQ.MSU2aUIBK1iUsg7h52lLrfEfTwVMF_wB3HDq75ECskxSyyDDMtk9_3957UtQF-3yoGCIhKOkWjzX8C-WXnLADw
    3. ------END NATS USER JWT------
    4. ************************* IMPORTANT *************************
    5. NKEY Seed printed below can be used to sign and prove identity.
    6. NKEYs are sensitive and should be treated as secrets.
    7. -----BEGIN USER NKEY SEED-----
    8. SUANVBWRHHFMGHNIT6UJHPN2TGVBVIILE7VPVNEQ7DGCJ26ZD2V3KAHT4M
    9. ------END USER NKEY SEED------
    10. *************************************************************

    And this same user is able to connect to either one of the servers (bound to 4222 and 4223 respectively):

    Subscriber Service:

    1. package main
    3. import (
    4.     "log"
    5.     "time"
    7.     "github.com/nats-io/nats.go"
    8. )
    10. func main() {
    11.     nc, err := nats.Connect("127.0.0.1:4223", nats.UserCredentials("path/to/user.creds"))
    12.     if err != nil {
    13.         log.Fatal(err)
    14.     }
    16.     for range time.NewTicker(1 * time.Second).C {
    17.         resp, err := nc.Request("test", []byte("test"), 1*time.Second)
    18.         if err != nil {
    19.             log.Println("[Error]", err)
    20.             continue
    21.         }
    22.         log.Println("[Received]", string(resp.Data))
    23. }