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Thank you for your reply. I forgot to mention that before deploying
elasticsearch helm chart, I also deployed local-storage helm chart to
create 3 PVs which might be used by elasticsearch chart. When I run helm
template with debug and other parameters, it show below errors -

openstack-helm-infra/elasticsearch$ helm template elasticsearch
local/elasticsearch --values values_overrides/local-storage.yaml -n
openstack --validate --debug
install.go:158: [debug] Original chart version: ""
install.go:175: [debug] CHART PATH:
/opt/stack/.cache/helm/repository/elasticsearch-0.1.0.tgz

Error: unable to build kubernetes objects from release manifest: error
validating "": error validating data: ValidationError(StatefulSet.spec):
unknown field "strategy" in io.k8s.api.apps.v1.StatefulSetSpec
helm.go:75: [debug] error validating "": error validating data:
ValidationError(StatefulSet.spec): unknown field "strategy" in
io.k8s.api.apps.v1.StatefulSetSpec
helm.sh/helm/v3/pkg/kube.scrubValidationError
        /home/circleci/helm.sh/helm/pkg/kube/client.go:542
helm.sh/helm/v3/pkg/kube.(*Client).Build
        /home/circleci/helm.sh/helm/pkg/kube/client.go:149
helm.sh/helm/v3/pkg/action.(*Install).Run
        /home/circleci/helm.sh/helm/pkg/action/install.go:245
main.runInstall
        /home/circleci/helm.sh/helm/cmd/helm/install.go:223
main.newTemplateCmd.func1
        /home/circleci/helm.sh/helm/cmd/helm/template.go:66
github.com/spf13/cobra.(*Command).execute
        /go/pkg/mod/github.com/spf13/cobra at v0.0.5/command.go:826
github.com/spf13/cobra.(*Command).ExecuteC
        /go/pkg/mod/github.com/spf13/cobra at v0.0.5/command.go:914
github.com/spf13/cobra.(*Command).Execute
        /go/pkg/mod/github.com/spf13/cobra at v0.0.5/command.go:864
main.main
        /home/circleci/helm.sh/helm/cmd/helm/helm.go:74
runtime.main
        /usr/local/go/src/runtime/proc.go:203
runtime.goexit
        /usr/local/go/src/runtime/asm_amd64.s:1357
unable to build kubernetes objects from release manifest
helm.sh/helm/v3/pkg/action.(*Install).Run
        /home/circleci/helm.sh/helm/pkg/action/install.go:247
main.runInstall
        /home/circleci/helm.sh/helm/cmd/helm/install.go:223
main.newTemplateCmd.func1
        /home/circleci/helm.sh/helm/cmd/helm/template.go:66
github.com/spf13/cobra.(*Command).execute
        /go/pkg/mod/github.com/spf13/cobra at v0.0.5/command.go:826
github.com/spf13/cobra.(*Command).ExecuteC
        /go/pkg/mod/github.com/spf13/cobra at v0.0.5/command.go:914
github.com/spf13/cobra.(*Command).Execute
        /go/pkg/mod/github.com/spf13/cobra at v0.0.5/command.go:864
main.main
        /home/circleci/helm.sh/helm/cmd/helm/helm.go:74
runtime.main
        /usr/local/go/src/runtime/proc.go:203
runtime.goexit
        /usr/local/go/src/runtime/asm_amd64.s:1357


However with below cmdline options, helm template generates the deployment
info below without any issue..but actual helm install cmd fails to deploy
the chart.

/openstack-helm-infra/elasticsearch$ helm template elasticsearch
local/elasticsearch --values values_overrides/local-storage.yaml -n
openstack --wait --debug  --dry-run
install.go:158: [debug] Original chart version: ""
install.go:175: [debug] CHART PATH:
/opt/stack/.cache/helm/repository/elasticsearch-0.1.0.tgz

---
# Source: elasticsearch/templates/deployment-client.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
  name: elasticsearch-elasticsearch-client
  namespace: openstack
....
....

>From the above, does it seem the issue is caused mismatch of tools version
used in my k8s cluster and helm charts?
I even tried with lesser version of k8s (v1.17), helm(v3.0.3) and
docker(19.03.8) in my cluster, the issue is same with elasticsearch chart
deploy.

thanks and regards,
Sanjay

On Tue, Apr 21, 2020 at 6:13 PM Roman Gorshunov <paye600 at gmail.com> wrote:

> Hello Sanjay,
>
> I have verified templates code for elasticsearch in
> openstack-helm-infra and relevant helm-toolkit code, and didn't find
> any visible problems. Deployments in Kubernetes v1.18 do support
> "strategy: ...".
> Could you try to render locally with "helm template ..." command and
> check the resulting deployments?
>
> Best regards,
> Roman Gorshunov
>
> On Tue, Apr 21, 2020 at 12:19 PM Sanjay K <isanjayk5 at gmail.com> wrote:
> >
> > Hi All,
> > Just forgot to mention my environment details if it throws any hints-
> > k8s - v1.18
> > helm - v3.1.2
> > openstack-helm-infra recent repo
> > docker - 19.03.7
> > VM OS- Ubuntu 16
> > openstack release - Stein
> >
> > thanks,
> > SanjayK
> >
> > On Mon, Apr 20, 2020 at 4:42 PM Sanjay K <isanjayk5 at gmail.com> wrote:
> >>
> >> Hello everyone,
> >> I have been trying to deploy elasticsearch helm chart in my k8s cluster
> consisting of 4 nodes (1 k8s master, 1 controller and 2 computes) after
> deploying fluentbit and fluentd helm charts which are deployed with
> success. I have plan to make the EFK (Elasticsearch-Fluentd-Kibana) stack
> running in my k8s cluster setup for logs management.
> >>
> >> However I face issues while deploying elasticsearch helm chart using
> the below command :
> >> $ helm install elasticsearch local/elasticsearch --values
> values_overrides/local-storage.yaml  -n openstack
> >> Error: unable to build kubernetes objects from release manifest: error
> validating "": error validating data: ValidationError(StatefulSet.spec):
> unknown field "strategy" in io.k8s.api.apps.v1.StatefulSetSpec
> >>
> >> Can anyone point me if I missing anything?
> >> What are the prerequisites before deploying elasticsearch chart which
> intended to use local storage/pv in my case avoiding the default S3 storage
> as per the chart?
> >>
> >> Thanks for your pointers and suggestions.
> >> '
> >> best regards,
> >> SanjayK
>
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