Terraform 14.2："错误：索引无效：此值在销毁时资源上的销毁时预配器上没有任何索引"

Question

我有一个创建设置器和一个销毁设置器。我已经读到，很明显，触发器可能会解决这个问题，所以它们被集成在这里，但尽管这成功地构建了资源，但不会让它们破坏这个module.thingx.null_resource.script-stuff资源。我不确定我在这里是否正确使用了触发器，更令人困惑的是，创建时间应用程序运行良好，但销毁时间应用程序失败，并出现了上述错误。

这是明显错误所指的模块空资源；包括创建和销毁时间提供者：

resource "null_resource" "script-stuff" {
### -- testing triggers
triggers = {
dns_zones = var.dns_zones[each.key]
dnat_ip = google_compute_instance.server[each.key].network_interface.0.access_config.0.nat_ip
pem = tls_private_key.node_ssh[each.key].private_key_pem
} ### -- end testing

depends_on = [google_compute_instance.server, google_project_iam_member.list-sa]
for_each   = var.list_map
provisioner "remote-exec" {
when = create
inline = [
"cat ${var.dns_zones[each.key]} > /dev/null",
"sensitive-script.sh --create"
]
connection {
type        = "ssh"
host        = google_compute_instance.server[each.key].network_interface[0].access_config[0].nat_ip
user        = "common-user"
private_key = tls_private_key.node_ssh[each.key].private_key_pem
}
}
provisioner "remote-exec" {
when = destroy
inline = [
# "echo ${var.dns_zones[each.key]} > /dev/null", #<-- this doesn't work when terraform is destroying
"echo ${self.triggers.dns_zones[each.key]} > /dev/null",
"sensitive-script.sh --destroy"
]
connection {
type        = "ssh"
#host        = google_compute_instance.server[each.key].network_interface[0].access_config[0].nat_ip #<-- this doesn't work when terraform is destroying
host        = self.triggers.dnat_ip
user        = "common-user"
#private_key = tls_private_key.node_ssh[each.key].private_key_pem #<-- this doesn't work when terraform is destroying
private_key = self.triggers.pem
}
}
}

Answer 1

destroy触发的提供程序不支持变量，如本GitHub问题所述：

• 允许销毁时间提供程序访问变量

所以"echo ${var.dns_zones[each.key]} > /dev/null"中不能有任何变量。