GitLab agent server for Kubernetes in Multi-nodes

How to Use GitLab
,
1

Hi Team,

We were trying to implement “gitlab agent server for Kubernetes in Multi-nodes”
Currently our Gitlab Server is running in 3 node cluster in ECS.

Gitlab version : 15.8.2 ee

We have gone through the official documentation and able to test with single node and its working fine. But while going to test in Multi-node, we need to some information about the configuration.

gitlab_kas['enable'] = true
gitlab_kas['api_secret_key'] = '<32_bytes_long_base64_encoded_value>'
gitlab_kas['private_api_secret_key'] = '<32_bytes_long_base64_encoded_value>'
gitlab_kas['private_api_listen_address'] = '0.0.0.0:8155'
gitlab_kas['env'] = {
  'SSL_CERT_DIR' => "/opt/gitlab/embedded/ssl/certs/",
  'OWN_PRIVATE_API_URL' => 'grpc://<ip_or_hostname_of_this_host>:8155'
}

gitlab_rails['gitlab_kas_enabled'] = true
gitlab_rails['gitlab_kas_external_url'] = 'wss://gitlab.example.com/-/kubernetes-agent/'
gitlab_rails['gitlab_kas_internal_url'] = 'grpc://kas.internal.gitlab.example.com'
gitlab_rails['gitlab_kas_external_k8s_proxy_url'] = 'https://gitlab.example.com/-/kubernetes-agent/k8s-proxy/'

Need to know how we can get the value for api_secert_key & private_api_secert_key

Also for this OWN_PRIVATE_API_URL can we provide “0.0.0.0” ?,

'OWN_PRIVATE_API_URL' => 'grpc://<ip_or_hostname_of_this_host>:8155'

Need suggestion on the explanation of these config properties and how to generate these secret keys.