A tool to convert the Istio v1alpha1 authentication policy to the v1beta1 version.
Home Page: https://istio.io/latest/docs/concepts/security/
License: Apache License 2.0
i am following the migration steps from https://cloud.google.com/istio/docs/istio-on-gke/migrate-to-anthos-service-mesh#zonal-clusters_1 this article
and get an error like this
$ ./convert
2021/07/22 11:40:12 found root namespace: istio-system
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x10 pc=0x1342136]
goroutine 1 [running]:
strings.(*Builder).String(...)
/opt/hostedtoolcache/go/1.14.14/x64/src/strings/builder.go:48
main.(*kubeClient).convert(0xc0004287b0, 0x0, 0x0)
/home/runner/work/security-policy-migrate/security-policy-migrate/k8s.go:198 +0x1176
main.rootCmd.func1(0xc00022b600, 0x22b1fa8, 0x0, 0x0, 0x0, 0x0)
/home/runner/work/security-policy-migrate/security-policy-migrate/main.go:48 +0xf7
github.com/spf13/cobra.(*Command).execute(0xc00022b600, 0xc00003c1d0, 0x0, 0x0, 0xc00022b600, 0xc00003c1d0)
/home/runner/go/pkg/mod/github.com/spf13/[email protected]/command.go:850 +0x453
github.com/spf13/cobra.(*Command).ExecuteC(0xc00022b600, 0x0, 0x0, 0xc00022b600)
/home/runner/go/pkg/mod/github.com/spf13/[email protected]/command.go:958 +0x349
github.com/spf13/cobra.(*Command).Execute(...)
/home/runner/go/pkg/mod/github.com/spf13/[email protected]/command.go:895
main.main()
/home/runner/work/security-policy-migrate/security-policy-migrate/main.go:22 +0xab
since I have no go knowledge I am bringing this issue here
the go version in cloud shell
is
$ go version
go version go1.16.6 linux/amd64
We had the following MeshPolicy which we were trying to migrate to the istio v1.6.0
apiVersion: "authentication.istio.io/v1alpha1"
kind: "MeshPolicy"
metadata:
name: "default"
spec:
peers:
- mtls: {}
originIsOptional: true
origins:
- jwt:
issuer: "https://keycloak.domain"
jwksUri: "https://keycloak.domain/protocol/openid-connect/certs"
jwt_headers:
- "x-amzn-oidc-accesstoken"
principalBinding: USE_ORIGINThe migration was attempted using the security-policy-migrate tool, and it generated the following PeerAuthentication and RequestAuthentication yamls.
apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
annotations:
security.istio.io/alpha-policy-convert: converted from alpha authentication policy
/default, mesh level policy
creationTimestamp: null
name: default
namespace: istio-system
spec:
mtls:
mode: STRICT
---
apiVersion: security.istio.io/v1beta1
kind: RequestAuthentication
metadata:
annotations:
security.istio.io/alpha-policy-convert: converted from alpha authentication policy
/default, mesh level policy
creationTimestamp: null
name: default
namespace: istio-system
spec:
jwtRules:
- fromHeaders:
- name: x-amzn-oidc-accesstoken
issuer: https://keycloak.domain
jwksUri: https://keycloak.domain/protocol/openid-connect/certs
---Unfortunately the generated v1beta1 RequestAuthentication policy didn't work. After a lot of debugging and trial and error, i finally found that the missing piece was forwardOriginalToken: true from RequestAuthentication. To my frustration, this change/requirement was nowhere documented and took a lot of time to figure it out. I am creating a bug here, so that this can be resolved, and if someone else stumbles over the same issue, they know what to do.
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