Opensearch fails to start with default configuration (demo install)

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):
Chart version: 2.18.0
Opensearch version: 2.14.0

Describe the issue:
I am trying to deploy OpenSearch as it is using the helm charts as a demo installation. Only addition is the password for the “OPENSEARCH_INITIAL_ADMIN_PASSWORD” setting. I get the following error message that OpenSearch cannot find/read the “esnode.pem” certificate in path “/usr/share/opensearch/config/esnode.pem”.

I have referred the following issue in the community: Using Helm chart, demo install with default certs fails to start
But the solution is not helping me as I I don’t have a deployment named local-path-provisioner in kube-system namespace.

Configuration:
Azure Kubernetes Service: version: 1.28.5 & 1.29.2

Relevant Logs or Screenshots:

Caused by: org.opensearch.OpenSearchSecurityException: Error while initializing transport SSL layer from PEM: OpenSearchException[Unable to read /usr/share/opensearch/config/esnode.pem (/usr/share/opensearch/config/esnode.pem). Please make sure this files exists and is readable regarding to permissions. Property: plugins.security.ssl.transport.pemcert_filepath]
	at org.opensearch.security.ssl.DefaultSecurityKeyStore.initTransportSSLConfig(DefaultSecurityKeyStore.java:484) ~[?:?]
	at org.opensearch.security.ssl.DefaultSecurityKeyStore.initSSLConfig(DefaultSecurityKeyStore.java:298) ~[?:?]
	at org.opensearch.security.ssl.DefaultSecurityKeyStore.<init>(DefaultSecurityKeyStore.java:204) ~[?:?]
	at org.opensearch.security.ssl.OpenSearchSecuritySSLPlugin.<init>(OpenSearchSecuritySSLPlugin.java:256) ~[?:?]
	at org.opensearch.security.OpenSearchSecurityPlugin.<init>(OpenSearchSecurityPlugin.java:308) ~[?:?]
	at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) ~[?:?]
	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502) ~[?:?]
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486) ~[?:?]
	at org.opensearch.plugins.PluginsService.loadPlugin(PluginsService.java:794) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.plugins.PluginsService.loadBundle(PluginsService.java:743) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.plugins.PluginsService.loadBundles(PluginsService.java:544) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.plugins.PluginsService.<init>(PluginsService.java:196) ~[opensearch-2.14.0.jar:2.14.0]
uncaught exception in thread [main]
	at org.opensearch.node.Node.<init>(Node.java:493) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.node.Node.<init>(Node.java:420) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.bootstrap.Bootstrap$5.<init>(Bootstrap.java:242) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.bootstrap.Bootstrap.setup(Bootstrap.java:242) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.bootstrap.Bootstrap.init(Bootstrap.java:404) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.bootstrap.OpenSearch.init(OpenSearch.java:181) ~[opensearch-2.14.0.jar:2.14.0]
	... 6 more
Caused by: org.opensearch.OpenSearchException: Unable to read /usr/share/opensearch/config/esnode.pem (/usr/share/opensearch/config/esnode.pem). Please make sure this files exists and is readable regarding to permissions. Property: plugins.security.ssl.transport.pemcert_filepath
	at org.opensearch.security.ssl.DefaultSecurityKeyStore.checkPath(DefaultSecurityKeyStore.java:1135) ~[?:?]
	at org.opensearch.security.ssl.DefaultSecurityKeyStore.resolve(DefaultSecurityKeyStore.java:276) ~[?:?]
	at org.opensearch.security.ssl.DefaultSecurityKeyStore.initTransportSSLConfig(DefaultSecurityKeyStore.java:454) ~[?:?]
	at org.opensearch.security.ssl.DefaultSecurityKeyStore.initSSLConfig(DefaultSecurityKeyStore.java:298) ~[?:?]
	at org.opensearch.security.ssl.DefaultSecurityKeyStore.<init>(DefaultSecurityKeyStore.java:204) ~[?:?]
	at org.opensearch.security.ssl.OpenSearchSecuritySSLPlugin.<init>(OpenSearchSecuritySSLPlugin.java:256) ~[?:?]
	at org.opensearch.security.OpenSearchSecurityPlugin.<init>(OpenSearchSecurityPlugin.java:308) ~[?:?]
	at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) ~[?:?]
	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502) ~[?:?]
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486) ~[?:?]
	at org.opensearch.plugins.PluginsService.loadPlugin(PluginsService.java:794) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.plugins.PluginsService.loadBundle(PluginsService.java:743) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.plugins.PluginsService.loadBundles(PluginsService.java:544) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.plugins.PluginsService.<init>(PluginsService.java:196) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.node.Node.<init>(Node.java:493) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.node.Node.<init>(Node.java:420) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.bootstrap.Bootstrap$5.<init>(Bootstrap.java:242) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.bootstrap.Bootstrap.setup(Bootstrap.java:242) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.bootstrap.Bootstrap.init(Bootstrap.java:404) ~[opensearch-2.14.0.jar:2.14.0]
	at org.opensearch.bootstrap.OpenSearch.init(OpenSearch.java:181) ~[opensearch-2.14.0.jar:2.14.0]
	... 6 more

@rawshaan Could you share your values.yml file?
Could you confirm that certificates exist in the pod and have user and group set to opensearch?

Hi @pablo ,
Here is the values.yaml:

---
clusterName: "opensearch-cluster"
nodeGroup: "master"

# If discovery.type in the opensearch configuration is set to "single-node",
# this should be set to "true"
# If "true", replicas will be forced to 1
singleNode: false

# The service that non master groups will try to connect to when joining the cluster
# This should be set to clusterName + "-" + nodeGroup for your master group
masterService: "opensearch-cluster-master"

# OpenSearch roles that will be applied to this nodeGroup
# These will be set as environment variable "node.roles". E.g. node.roles=master,ingest,data,remote_cluster_client
roles:
  - master
  - ingest
  - data
  - remote_cluster_client

replicas: 1

# if not set, falls back to parsing .Values.imageTag, then .Chart.appVersion.
majorVersion: ""

global:
  # Set if you want to change the default docker registry, e.g. a private one.
  dockerRegistry: ""

# Allows you to add any config files in {{ .Values.opensearchHome }}/config
opensearchHome: /usr/share/opensearch

# such as opensearch.yml and log4j2.properties
config:
  # Values must be YAML literal style scalar / YAML multiline string.
  # <filename>: |
  #   <formatted-value(s)>
  # log4j2.properties: |
  #   status = error
  #
  #   appender.console.type = Console
  #   appender.console.name = console
  #   appender.console.layout.type = PatternLayout
  #   appender.console.layout.pattern = [%d{ISO8601}][%-5p][%-25c{1.}] [%node_name]%marker %m%n
  #
  #   rootLogger.level = info
  #   rootLogger.appenderRef.console.ref = console
  opensearch.yml: |
    cluster.name: opensearch-cluster

    # Bind to all interfaces because we don't know what IP address Docker will assign to us.
    network.host: 0.0.0.0

    # Setting network.host to a non-loopback address enables the annoying bootstrap checks. "Single-node" mode disables them again.
    # Implicitly done if ".singleNode" is set to "true".
    # discovery.type: single-node

    # Start OpenSearch Security Demo Configuration
    # WARNING: revise all the lines below before you go into production
    plugins:
      security:
        ssl:
          transport:
            pemcert_filepath: esnode.pem
            pemkey_filepath: esnode-key.pem
            pemtrustedcas_filepath: root-ca.pem
            enforce_hostname_verification: false
          http:
            enabled: true
            pemcert_filepath: esnode.pem
            pemkey_filepath: esnode-key.pem
            pemtrustedcas_filepath: root-ca.pem
        allow_unsafe_democertificates: true
        allow_default_init_securityindex: true
        authcz:
          admin_dn:
            - CN=kirk,OU=client,O=client,L=test,C=de
        audit.type: internal_opensearch
        enable_snapshot_restore_privilege: true
        check_snapshot_restore_write_privileges: true
        restapi:
          roles_enabled: ["all_access", "security_rest_api_access"]
        system_indices:
          enabled: true
          indices:
            [
              ".opendistro-alerting-config",
              ".opendistro-alerting-alert*",
              ".opendistro-anomaly-results*",
              ".opendistro-anomaly-detector*",
              ".opendistro-anomaly-checkpoints",
              ".opendistro-anomaly-detection-state",
              ".opendistro-reports-*",
              ".opendistro-notifications-*",
              ".opendistro-notebooks",
              ".opendistro-asynchronous-search-response*",
            ]
    ######## End OpenSearch Security Demo Configuration ########
  # log4j2.properties:

# Extra environment variables to append to this nodeGroup
# This will be appended to the current 'env:' key. You can use any of the kubernetes env
# syntax here
extraEnvs:
#  - name: MY_ENVIRONMENT_VAR
#    value: the_value_goes_here
# Chart version 2.18.0 and App Version OpenSearch 2.12.0 onwards a custom strong password needs to be provided in order to setup demo admin user.
# Cluster will not spin-up without this unless demo config install is disabled.
 - name: OPENSEARCH_INITIAL_ADMIN_PASSWORD
   value: some-complicated-password

# Allows you to load environment variables from kubernetes secret or config map
envFrom: []
# - secretRef:
#     name: env-secret
# - configMapRef:
#     name: config-map

# A list of secrets and their paths to mount inside the pod
# This is useful for mounting certificates for security and for mounting
# the X-Pack license
secretMounts: []

hostAliases: []
# - ip: "127.0.0.1"
#   hostnames:
#   - "foo.local"
#   - "bar.local"

image:
  repository: "opensearchproject/opensearch"
  # override image tag, which is .Chart.AppVersion by default
  tag: ""
  pullPolicy: "IfNotPresent"

podAnnotations: {}
  # iam.amazonaws.com/role: es-cluster

# OpenSearch Statefulset annotations
openSearchAnnotations: {}

# additionals labels
labels: {}

opensearchJavaOpts: "-Xmx512M -Xms512M"

resources:
  requests:
    cpu: "1000m"
    memory: "100Mi"

initResources: {}
#  limits:
#     cpu: "25m"
#     memory: "128Mi"
#  requests:
#     cpu: "25m"
#     memory: "128Mi"

sidecarResources: {}
#   limits:
#     cpu: "25m"
#     memory: "128Mi"
#   requests:
#     cpu: "25m"
#     memory: "128Mi"

networkHost: "0.0.0.0"

rbac:
  create: false
  serviceAccountAnnotations: {}
  serviceAccountName: ""
  # Controls whether or not the Service Account token is automatically mounted to /var/run/secrets/kubernetes.io/serviceaccount
  automountServiceAccountToken: false

podSecurityPolicy:
  create: false
  name: ""
  spec:
    privileged: true
    fsGroup:
      rule: RunAsAny
    runAsUser:
      rule: RunAsAny
    seLinux:
      rule: RunAsAny
    supplementalGroups:
      rule: RunAsAny
    volumes:
      - secret
      - configMap
      - persistentVolumeClaim
      - emptyDir

persistence:
  enabled: true
  # Set to false to disable the `fsgroup-volume` initContainer that will update permissions on the persistent disk.
  enableInitChown: false
  # override image, which is busybox by default
  # image: busybox
  # override image tag, which is latest by default
  # imageTag:
  labels:
    # Add default labels for the volumeClaimTemplate of the StatefulSet
    enabled: false
  # OpenSearch Persistent Volume Storage Class
  # If defined, storageClassName: <storageClass>
  # If set to "-", storageClassName: "", which disables dynamic provisioning
  # If undefined (the default) or set to null, no storageClassName spec is
  #   set, choosing the default provisioner.  (gp2 on AWS, standard on
  #   GKE, AWS & OpenStack)
  #
  storageClass: opensearch-storage
  accessModes:
    - ReadWriteOnce
  size: 8Gi
  annotations: {}

extraVolumes: []
  # - name: extras
  #   emptyDir: {}

extraVolumeMounts: []
  # - name: extras
  #   mountPath: /usr/share/extras
  #   readOnly: true

extraContainers: []
  # - name: do-something
  #   image: busybox
  #   command: ['do', 'something']

extraInitContainers: []
  # - name: do-somethings
  #   image: busybox
  #   command: ['do', 'something']

# This is the PriorityClass settings as defined in
# https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/#priorityclass
priorityClassName: ""

# By default this will make sure two pods don't end up on the same node
# Changing this to a region would allow you to spread pods across regions
antiAffinityTopologyKey: "kubernetes.io/hostname"

# Hard means that by default pods will only be scheduled if there are enough nodes for them
# and that they will never end up on the same node. Setting this to soft will do this "best effort".
# Setting this to custom will use what is passed into customAntiAffinity.
antiAffinity: "soft"

# Allows passing in custom anti-affinity settings as defined in
# https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#types-of-inter-pod-affinity-and-anti-affinity
# Using this parameter requires setting antiAffinity to custom.
customAntiAffinity: {}

# This is the node affinity settings as defined in
# https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#node-affinity-beta-feature
nodeAffinity: {}

# This is the pod affinity settings as defined in
# https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#types-of-inter-pod-affinity-and-anti-affinity
podAffinity: {}

# This is the pod topology spread constraints
# https://kubernetes.io/docs/concepts/workloads/pods/pod-topology-spread-constraints/
topologySpreadConstraints: []

# The default is to deploy all pods serially. By setting this to parallel all pods are started at
# the same time when bootstrapping the cluster
podManagementPolicy: "Parallel"

# The environment variables injected by service links are not used, but can lead to slow OpenSearch boot times when
# there are many services in the current namespace.
# If you experience slow pod startups you probably want to set this to `false`.
enableServiceLinks: true

protocol: https
httpPort: 9200
transportPort: 9300
metricsPort: 9600
httpHostPort: ""
transportHostPort: ""


service:
  labels: {}
  labelsHeadless: {}
  headless:
    annotations: {}
  type: ClusterIP
  # The IP family and IP families options are to set the behaviour in a dual-stack environment
  # Omitting these values will let the service fall back to whatever the CNI dictates the defaults
  # should be
  #
  # ipFamilyPolicy: SingleStack
  # ipFamilies:
  # - IPv4
  nodePort: ""
  annotations: {}
  httpPortName: http
  transportPortName: transport
  metricsPortName: metrics
  loadBalancerIP: ""
  loadBalancerSourceRanges: []
  externalTrafficPolicy: ""

updateStrategy: RollingUpdate

# This is the max unavailable setting for the pod disruption budget
# The default value of 1 will make sure that kubernetes won't allow more than 1
# of your pods to be unavailable during maintenance
maxUnavailable: 1

podSecurityContext:
  fsGroup: 1000
  runAsUser: 1000

securityContext:
  capabilities:
    drop:
      - ALL
  # readOnlyRootFilesystem: true
  runAsNonRoot: true
  runAsUser: 1000

securityConfig:
  enabled: true
  path: /usr/share/opensearch/config/opensearch-security
  actionGroupsSecret:
  configSecret: security-config-secret
  internalUsersSecret:
  rolesSecret:
  rolesMappingSecret:
  tenantsSecret:
  # The following option simplifies securityConfig by using a single secret and
  # specifying the config files as keys in the secret instead of creating
  # different secrets for for each config file.
  # Note that this is an alternative to the individual secret configuration
  # above and shouldn't be used if the above secrets are used.
  config:
    # There are multiple ways to define the configuration here:
    # * If you define anything under data, the chart will automatically create
    #   a secret and mount it. This is best option to choose if you want to override all the
    #   existing yml files at once.
    # * If you define securityConfigSecret, the chart will assume this secret is
    #   created externally and mount it. This is best option to choose if your intention is to
    #   only update a single yml file.
    # * It is an error to define both data and securityConfigSecret.
    securityConfigSecret: ""
    dataComplete: true
    data: {}
      # config.yml: |-
      # internal_users.yml: |-
      # roles.yml: |-
      # roles_mapping.yml: |-
      # action_groups.yml: |-
      # tenants.yml: |-

# How long to wait for opensearch to stop gracefully
terminationGracePeriod: 120

sysctlVmMaxMapCount: 262144

startupProbe:
  tcpSocket:
    port: 9200
  initialDelaySeconds: 5
  periodSeconds: 10
  timeoutSeconds: 3
  failureThreshold: 30

livenessProbe: {}
  # periodSeconds: 20
  # timeoutSeconds: 5
  # failureThreshold: 10
  # successThreshold: 1
  # initialDelaySeconds: 10
  # tcpSocket:
  #   port: 9200

readinessProbe:
  tcpSocket:
    port: 9200
  periodSeconds: 5
  timeoutSeconds: 3
  failureThreshold: 3

## Use an alternate scheduler.
## ref: https://kubernetes.io/docs/tasks/administer-cluster/configure-multiple-schedulers/
##
schedulerName: ""

imagePullSecrets: []
nodeSelector:
  dedicated: opensearch
tolerations:
  - key: "dedicated"
    operator: "Equal"
    value: "opensearch"
    effect: "NoSchedule"

# Enabling this will publically expose your OpenSearch instance.
# Only enable this if you have security enabled on your cluster
ingress:
  enabled: false
  # For Kubernetes >= 1.18 you should specify the ingress-controller via the field ingressClassName
  # See https://kubernetes.io/blog/2020/04/02/improvements-to-the-ingress-api-in-kubernetes-1.18/#specifying-the-class-of-an-ingress
  # ingressClassName: nginx

  annotations: {}
    # kubernetes.io/ingress.class: nginx
    # kubernetes.io/tls-acme: "true"
  ingressLabels: {}
  path: /
  hosts:
    - chart-example.local
  tls: []
  #  - secretName: chart-example-tls
  #    hosts:
  #      - chart-example.local

nameOverride: ""
fullnameOverride: ""

masterTerminationFix: false

opensearchLifecycle: {}
  # preStop:
  #   exec:
  #     command: ["/bin/sh", "-c", "echo Hello from the preStart handler > /usr/share/message"]
  # postStart:
  #   exec:
  #     command: ["/bin/sh", "-c", "echo Hello from the postStart handler > /usr/share/message"]

lifecycle: {}
  # preStop:
  #   exec:
  #     command: ["/bin/sh", "-c", "echo Hello from the postStart handler > /usr/share/message"]
  # postStart:
  #   exec:
  #     command:
  #       - bash
  #       - -c
  #       - |
  #         #!/bin/bash
  #         # Add a template to adjust number of shards/replicas1
  #         TEMPLATE_NAME=my_template
  #         INDEX_PATTERN="logstash-*"
  #         SHARD_COUNT=8
  #         REPLICA_COUNT=1
  #         ES_URL=http://localhost:9200
  #         while [[ "$(curl -s -o /dev/null -w '%{http_code}\n' $ES_URL)" != "200" ]]; do sleep 1; done
  #         curl -XPUT "$ES_URL/_template/$TEMPLATE_NAME" -H 'Content-Type: application/json' -d'{"index_patterns":['\""$INDEX_PATTERN"\"'],"settings":{"number_of_shards":'$SHARD_COUNT',"number_of_replicas":'$REPLICA_COUNT'}}'

keystore:
# To add secrets to the keystore:
 - secretName: azure-secondary-secret

networkPolicy:
  create: false
  ## Enable creation of NetworkPolicy resources. Only Ingress traffic is filtered for now.
  ## In order for a Pod to access OpenSearch, it needs to have the following label:
  ## {{ template "uname" . }}-client: "true"
  ## Example for default configuration to access HTTP port:
  ## opensearch-master-http-client: "true"
  ## Example for default configuration to access transport port:
  ## opensearch-master-transport-client: "true"

  http:
    enabled: false

# Deprecated
# please use the above podSecurityContext.fsGroup instead
fsGroup: ""

## Set optimal sysctl's through securityContext. This requires privilege. Can be disabled if
## the system has already been preconfigured. (Ex: https://www.elastic.co/guide/en/elasticsearch/reference/current/vm-max-map-count.html)
## Also see: https://kubernetes.io/docs/tasks/administer-cluster/sysctl-cluster/
sysctl:
  enabled: false

## Set optimal sysctl's through privileged initContainer.
sysctlInit:
  enabled: false
  # override image, which is busybox by default
  # image: busybox
  # override image tag, which is latest by default
  # imageTag:

## Enable to add 3rd Party / Custom plugins not offered in the default OpenSearch image.
plugins:
  enabled: true
  installList:
    - repository-azure
  # - example-fake-plugin

# -- Array of extra K8s manifests to deploy
extraObjects: []
  # - apiVersion: secrets-store.csi.x-k8s.io/v1
  #   kind: SecretProviderClass
  #   metadata:
  #     name: argocd-secrets-store
  #   spec:
  #     provider: aws
  #     parameters:
  #       objects: |
  #         - objectName: "argocd"
  #           objectType: "secretsmanager"
  #           jmesPath:
  #               - path: "client_id"
  #                 objectAlias: "client_id"
  #               - path: "client_secret"
  #                 objectAlias: "client_secret"
  #     secretObjects:
  #     - data:
  #       - key: client_id
  #         objectName: client_id
  #       - key: client_secret
  #         objectName: client_secret
  #       secretName: argocd-secrets-store
  #       type: Opaque
  #       labels:
  #         app.kubernetes.io/part-of: argocd
  # - |
  #    apiVersion: policy/v1
  #    kind: PodDisruptionBudget
  #    metadata:
  #      name: {{ template "opensearch.uname" . }}
  #      labels:
  #        {{- include "opensearch.labels" . | nindent 4 }}
  #    spec:
  #      minAvailable: 1
  #      selector:
  #        matchLabels:
  #          {{- include "opensearch.selectorLabels" . | nindent 6 }}

When this error message comes, the pod goes into a crashloop backoff state, so I am not able to login into the pod to check whether the certificates exist or not.

Also, I would like to share with you a behaviour I noticed. In one of the AKS clusters, with the same values.yaml file, somehow the cluster came up partially.

I have split the values into Data and Master

And upon checking the certs inside the pods, they have the user and group assigned to opensearch

However, if I try to scale up either the data or master to more replicas using the “Kubectl scale sts” command, I get the same esnode.pem not found error.

I am not sure how the initial pods came up successfully.

@rawshaan I had no issues with your values.yml. I was able to deploy and scale statefulset. Both OS nodes are fully running and visible under _cat/nodes.

The difference is that I use k8s based on Ubuntu 22.04 and NFS storage class (1 master + 2 workers).

Have you tried running your values.yml without persistent storage (.persistance.enabled:false) ?

@pablo
Interesting that it is working for you. Yes, I have tried disabling the persistence as that was one of your recommendations mentioned in the other ticket I have added above. But that didn’t help either. I have tried mounting an Azure Storage Account container as a PV, but that also gave the same error.
Please let me know if you can think of any other methods to debug this.

For now, I have got the cluster up and running but creating my own certificates using the OpenSSL tools as described in this document and setting "DISABLE_INSTALL_DEMO_CONFIG to “true”. Generating self-signed certificates - OpenSearch Documentation

hi there, maybe it might be too late to reply now.
but i want to share my findings here so that someone else who has the same problem can have some clues.

i get the exactly same exception Unable to read /usr/share/opensearch/config/esnode.pem.
the root cause of this is because in values.yaml, config.opensearch.yml is provided.

when the opensearch is up, customed opensearch.yml is mounted to the config directory.
and then when install_demo_configuration.sh is executed, it will check if /usr/share/opensearch/config/opensearch.yml is already configured for Security.

i found the following logs that lead me to there:

/usr/share/opensearch/config/opensearch.yml seems to be already configured for Security. Quit.

so there are 2 ways to resolve this:

  1. either you generate your certificates and configure them in opensearch.yml.
  2. if you wish to use demo certificates, you have to make sure the security configuration config.opensearch.yml is not provided in the values.yaml. so that the install_demo_configuration.sh will able to generate the certs and the configuration for you.

for me i decided to go with approach 2 because is much more easier.
if you found u need to configure some configuration in config.opensearch.yml, you can utilise the extraEnvs like i did.
i configure plugins.security.audit.config.index with it, so that i won’t have to touch the config.opensearch.yml.