Terraform templatefile函数-ssh-config或ansible主机文件创建

Question

是否可以使用terraform templatefile函数创建ssh配置或ansible主机文件？使用Terraform 0.12。

地形定义：

resource "local_file" "ansible_hosts_file" {
content = templatefile("templates/ansible_hosts.tpl", {
jumphost_fip = openstack_networking_floatingip_v2.dth_fip.address,
node_name = module.app-cluster.app_cluster_compute.*.name,
node_ip = module.app-cluster.app_cluster_compute.*.access_ip_v4
})
filename = "../config/inventory/hosts"
}
resource "local_file" "ssh_config_file" {
content = templatefile("templates/ssh_config.tpl", {
jumphost_fip = openstack_networking_floatingip_v2.dth_fip.address,
node_name = module.app-cluster.app_cluster_compute.*.name,
node_ip = module.app-cluster.app_cluster_compute.*.access_ip_v4
})
filename = "../config/inventory/ssh_config"
}

我的问题是，我不知道模板文件应该是什么样子，尤其是插值或指令。。

ansible_hosts.tpl

jumphost ansible_host=${jumphost_fip}
[app_cluster]
%{ for node in node_name ~}        # ???????????? These 3 lines don't work of course
${node} ansible_host=${node_ip}    # ???????????? so could this be somehow specified
%{ endfor ~}                       # ???????????? that node and node_ip are filled in correctly?
[app_cluster:vars]
ansible_ssh_common_args=' -o ProxyCommand="ssh -W %h:%p -q jumphost"'
[all:vars]
ansible_user=ubuntu

ssh_config.tpl

Host *
StrictHostKeyChecking no
Host jumphost
Hostname ${jumphost_ip}
User ubuntu
%{ for node in node_name ~}                   # ???????????? Similar issue here
Host ${node}                                  # ????????????
Hostname ${node_ip}                       # ????????????
User ubuntu
ProxyCommand ssh -A jumphost -W %h:%p
%{ endfor ~}

ansible hosts文件和ssh配置应该如下所示：

ansible_hosts

jumphost ansible_host=10.200.100.100
[app_cluster]
app-node01 ansible_host=192.168.0.3
app-node02 ansible_host=192.168.0.5
[app_cluster:vars]
ansible_ssh_common_args=' -o ProxyCommand="ssh -W %h:%p -q jumphost"'
[all:vars]
ansible_user=ubuntu

ssh_config

Host *
StrictHostKeyChecking no
Host jumphost
Hostname 10.200.100.100
User ubuntu
Host app-node01
Hostname 192.168.0.3
User ubuntu
ProxyCommand ssh -A jumphost -W %h:%p
Host app-node02
Hostname 192.168.0.5
User ubuntu
ProxyCommand ssh -A jumphost -W %h:%p

Answer 1

[index]是模板文件中解决方案的关键：

ansible_hosts.tpl

%{ for index, node in node_name ~}
${node} ansible_host=${node_ip[index]}
%{ endfor ~}

ssh_config.tpl

%{ for index, node in node_name ~}
Host ${node}
Hostname ${node_ip[index]}
User ubuntu
ProxyCommand ssh -A jumphost -W %h:%p
%{ endfor ~}

来源-https://www.linkbynet.com/produce-an-ansible-inventory-with-terraform