通过Terraform到Azure VM的SSH连接 [英] SSH connection to Azure VM with Terraform
问题描述
我已经使用Terraform在Azure上成功创建了VM作为资源组的一部分.下一步是ssh插入新机器并运行一些命令.为此,我创建了一个预配器作为VM资源的一部分,并建立了SSH连接:
I have successfully created a VM as part of a Resource Group on Azure using Terraform. Next step is to ssh in the new machine and run a few commands. For that, I have created a provisioner as part of the VM resource and set up an SSH connection:
resource "azurerm_virtual_machine" "helloterraformvm" {
name = "terraformvm"
location = "West US"
resource_group_name = "${azurerm_resource_group.helloterraform.name}"
network_interface_ids = ["${azurerm_network_interface.helloterraformnic.id}"]
vm_size = "Standard_A0"
storage_image_reference {
publisher = "Canonical"
offer = "UbuntuServer"
sku = "14.04.2-LTS"
version = "latest"
}
os_profile {
computer_name = "hostname"
user = "some_user"
password = "some_password"
}
os_profile_linux_config {
disable_password_authentication = false
}
provisioner "remote-exec" {
inline = [
"sudo apt-get install docker.io -y"
]
connection {
type = "ssh"
user = "some_user"
password = "some_password"
}
}
}
如果我运行"terraform apply",它似乎陷入无限循环,尝试ssh失败,一遍又一遍地重复此日志:
If I run "terraform apply", it seems to get into an infinite loop trying to ssh unsuccessfully, repeating this log over and over:
azurerm_virtual_machine.helloterraformvm (remote-exec): Connecting to remote host via SSH...
azurerm_virtual_machine.helloterraformvm (remote-exec): Host:
azurerm_virtual_machine.helloterraformvm (remote-exec): User: testadmin
azurerm_virtual_machine.helloterraformvm (remote-exec): Password: true
azurerm_virtual_machine.helloterraformvm (remote-exec): Private key: false
azurerm_virtual_machine.helloterraformvm (remote-exec): SSH Agent: true
我确定我做错了什么,但我不知道这是什么:(
I'm sure I'm doing something wrong, but I don't know what it is :(
我尝试在没有配置程序的情况下设置此计算机,并且可以使用给定的用户名/密码通过SSH对其进行任何操作.但是,我需要在Azure门户中查找主机名,因为我不知道如何从Terraform检索主机名.日志中的"Host:"行为空是可疑的,所以我想知道这是否与此有关?
I have tried setting up this machine without the provisioner, and I can SSH to it no problems with the given username/passwd. However I need to look up the host name in the Azure portal because I don't know how to retrieve it from Terraform. It's suspicious that the "Host:" line in the log is empty, so I wonder if it has anything to do with that?
更新:
我尝试了不同的操作,例如在与
I've tried with different things like indicating the host name in the connection with
host = "${azurerm_public_ip.helloterraformip.id}"
和
host = "${azurerm_public_ip.helloterraformips.ip_address}"
如文档所示,但没有成功.
as indicated in the docs, but with no success.
我也尝试过使用ssh-keys代替密码,但是结果相同-无限循环连接尝试,没有明确的错误消息说明为什么不连接.
I've also tried using ssh-keys instead of password, but same result - infinite loop of connection tries, with no clear error message as of why it's not connecting.
推荐答案
我设法完成了这项工作.我改变了几件事:
I have managed to make this work. I changed several things:
- 将主机名命名为
connection
. - 正确配置了SSH密钥-需要对其进行解密.
- 从
provisioner
元素中删除connection
元素.
- Gave name of host to
connection
. - Configured SSH keys properly - they need to be unencrypted.
- Took the
connection
element out of theprovisioner
element.
这是完整的Terraform文件,正在替换SSH密钥等数据:
Here's the full working Terraform file, replacing the data like SSH keys, etc.:
# Configure Azure provider
provider "azurerm" {
subscription_id = "${var.azure_subscription_id}"
client_id = "${var.azure_client_id}"
client_secret = "${var.azure_client_secret}"
tenant_id = "${var.azure_tenant_id}"
}
# create a resource group if it doesn't exist
resource "azurerm_resource_group" "rg" {
name = "sometestrg"
location = "ukwest"
}
# create virtual network
resource "azurerm_virtual_network" "vnet" {
name = "tfvnet"
address_space = ["10.0.0.0/16"]
location = "ukwest"
resource_group_name = "${azurerm_resource_group.rg.name}"
}
# create subnet
resource "azurerm_subnet" "subnet" {
name = "tfsub"
resource_group_name = "${azurerm_resource_group.rg.name}"
virtual_network_name = "${azurerm_virtual_network.vnet.name}"
address_prefix = "10.0.2.0/24"
#network_security_group_id = "${azurerm_network_security_group.nsg.id}"
}
# create public IPs
resource "azurerm_public_ip" "ip" {
name = "tfip"
location = "ukwest"
resource_group_name = "${azurerm_resource_group.rg.name}"
public_ip_address_allocation = "dynamic"
domain_name_label = "sometestdn"
tags {
environment = "staging"
}
}
# create network interface
resource "azurerm_network_interface" "ni" {
name = "tfni"
location = "ukwest"
resource_group_name = "${azurerm_resource_group.rg.name}"
ip_configuration {
name = "ipconfiguration"
subnet_id = "${azurerm_subnet.subnet.id}"
private_ip_address_allocation = "static"
private_ip_address = "10.0.2.5"
public_ip_address_id = "${azurerm_public_ip.ip.id}"
}
}
# create storage account
resource "azurerm_storage_account" "storage" {
name = "someteststorage"
resource_group_name = "${azurerm_resource_group.rg.name}"
location = "ukwest"
account_type = "Standard_LRS"
tags {
environment = "staging"
}
}
# create storage container
resource "azurerm_storage_container" "storagecont" {
name = "vhd"
resource_group_name = "${azurerm_resource_group.rg.name}"
storage_account_name = "${azurerm_storage_account.storage.name}"
container_access_type = "private"
depends_on = ["azurerm_storage_account.storage"]
}
# create virtual machine
resource "azurerm_virtual_machine" "vm" {
name = "sometestvm"
location = "ukwest"
resource_group_name = "${azurerm_resource_group.rg.name}"
network_interface_ids = ["${azurerm_network_interface.ni.id}"]
vm_size = "Standard_A0"
storage_image_reference {
publisher = "Canonical"
offer = "UbuntuServer"
sku = "16.04-LTS"
version = "latest"
}
storage_os_disk {
name = "myosdisk"
vhd_uri = "${azurerm_storage_account.storage.primary_blob_endpoint}${azurerm_storage_container.storagecont.name}/myosdisk.vhd"
caching = "ReadWrite"
create_option = "FromImage"
}
os_profile {
computer_name = "testhost"
admin_username = "testuser"
admin_password = "Password123"
}
os_profile_linux_config {
disable_password_authentication = false
ssh_keys = [{
path = "/home/testuser/.ssh/authorized_keys"
key_data = "ssh-rsa xxx email@something.com"
}]
}
connection {
host = "sometestdn.ukwest.cloudapp.azure.com"
user = "testuser"
type = "ssh"
private_key = "${file("~/.ssh/id_rsa_unencrypted")}"
timeout = "1m"
agent = true
}
provisioner "remote-exec" {
inline = [
"sudo apt-get update",
"sudo apt-get install docker.io -y",
"git clone https://github.com/somepublicrepo.git",
"cd Docker-sample",
"sudo docker build -t mywebapp .",
"sudo docker run -d -p 5000:5000 mywebapp"
]
}
tags {
environment = "staging"
}
}
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