Install hashicorp vault via terraform only or use Terraform + ansible?

Terraform
1

I have question about how to create instance in cloud and init scripts:

I have example stack for create hashicorp vault in hetzner:

provider "hcloud" {
  token = var.hcloud_token
}

resource "hcloud_server" "vault" {
  name        = "vault-server"
  image       = "ubuntu-22.04"
  server_type = "cx21"
  location    = "nbg1" # or fsn1 / hel1

  ssh_keys = [var.ssh_key_name]

  user_data = <<-EOF
              #cloud-config
              package_update: true
              packages:
                - unzip
                - curl

              runcmd:
                - curl -O https://releases.hashicorp.com/vault/1.15.4/vault_1.15.4_linux_amd64.zip
                - unzip vault_1.15.4_linux_amd64.zip
                - mv vault /usr/local/bin/
                - mkdir -p /etc/vault.d /opt/vault/data
                - useradd --system --home /etc/vault.d --shell /bin/false vault
                - chown -R vault:vault /etc/vault.d /opt/vault
                - echo 'listener "tcp" { address = "0.0.0.0:8200" tls_disable = 1 }' > /etc/vault.d/vault.hcl
                - echo 'storage "file" { path = "/opt/vault/data" }' >> /etc/vault.d/vault.hcl
                - echo "[Unit]
                  Description=Vault service
                  After=network.target
                  
                  [Service]
                  User=vault
                  Group=vault
                  ExecStart=/usr/local/bin/vault server -config=/etc/vault.d/vault.hcl
                  ExecReload=/bin/kill --signal HUP $MAINPID
                  KillMode=process
                  Restart=on-failure
                  
                  [Install]
                  WantedBy=multi-user.target" > /etc/systemd/system/vault.service
                - systemctl daemon-reexec
                - systemctl daemon-reload
                - systemctl enable vault
                - systemctl start vault
              EOF
}

Additional I will add set firewall, backup, logs exports etc. But I dont add all scripts in this post.

Its good practice to create all in terraform? Maybe better will be:

  1. Create infrastructure only via terraform.
  2. Install vault, firewall, backups etc with ansible playbook.

What will you do?

2

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