我有一个基本问题。我使用 Nornir 触发 Netmiko 来配置 Cisco 路由器。它仅在我对主机清单(主机名)中的 IP 地址进行硬编码时才有效。
Europe-Cisco-Site1:
hostname: "" <-- when I put the public IP here, it works!
username: "ec2-user"
password: ""
platform: "cisco_xe"
groups:
- cisco
connection_options:
netmiko:
extras:
use_keys: true
key_file: "/home/coder/.ssh/id_rsa"
就我而言,我必须从 AWS 获取公共 IP,然后动态分配主机名变量:
def assign_aws_public_ips(task):
task.host['hostname'] = get_aws_public_ip(str(task.host), task.host['aws_region'])
print("****************************")
print(task.host['hostname'])
print("****************************")
result = task.run(
task=netmiko_send_config,
config_file="templates/simple.j2"
)
print_result(result)
return(f"{task.host} = {task.host['hostname']}")
如果在主机名上分配了公共 IP,这只是一个要验证的测试脚本:
****************************
**52.59.216.193** <-- this is the public IP which has been assigned to **hostname**
****************************
netmiko_send_config*************************************************************
* Europe-Cisco-Site1 ** changed : False ****************************************
vvvv netmiko_send_config ** changed : False vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv ERROR
Traceback (most recent call last):
File "/home/coder/.local/lib/python3.8/site-packages/nornir/core/task.py", line 99, in start
r = self.task(self, **self.params)
File "/home/coder/.local/lib/python3.8/site-packages/nornir_netmiko/tasks/netmiko_send_config.py", line 24, in netmiko_send_config
net_connect = task.host.get_connection(CONNECTION_NAME, task.nornir.config)
File "/home/coder/.local/lib/python3.8/site-packages/nornir/core/inventory.py", line 494, in get_connection
self.open_connection(
File "/home/coder/.local/lib/python3.8/site-packages/nornir/core/inventory.py", line 546, in open_connection
conn_obj.open(
File "/home/coder/.local/lib/python3.8/site-packages/nornir_netmiko/connections/netmiko.py", line 59, in open
connection = ConnectHandler(**parameters)
File "/home/coder/.local/lib/python3.8/site-packages/netmiko/ssh_dispatcher.py", line 326, in ConnectHandler
return ConnectionClass(*args, **kwargs)
File "/home/coder/.local/lib/python3.8/site-packages/netmiko/cisco/cisco_ios.py", line 17, in __init__
return super().__init__(*args, **kwargs)
File "/home/coder/.local/lib/python3.8/site-packages/netmiko/base_connection.py", line 244, in __init__
raise ValueError("Either ip or host must be set")
ValueError: Either ip or host must be set
问: 为什么Netmiko不用播放时分配的主机名?它总是采用未在主机清单文件中定义的主机名?
一个糟糕的解决方案是使用公共 IP 更新主机清单文件,但这确实是一个糟糕的解决方案,我无法想象应该这样做!?