Hi
Example hosts file with connection local. Test-Host is a reachable Cisco router, Ubuntu is a reachable VM and NoHost doesn't exist on the network. Both Ubuntu and Cisco have ssh enabled and able to ssh with a valid user from cli or putty.
[all:vars]
# these defaults can be overridden for any group in the [group:vars] section
ansible_connection=local
ansible_network_os=ios
[hosts]
TEST-HOST ansible_host=192.168.106.142
Ubuntu ansible_host=192.168.106.152
NoHost ansible_host=192.168.200.200
Result - all hosts ping:pong. Even NoHost because the connection is local.
neteng@neteng-dev:~$ ansible -i hosts all -m ping
TEST-HOST | SUCCESS => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"ping": "pong"
}
NoHost | SUCCESS => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"ping": "pong"
}
Ubuntu | SUCCESS => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"ping": "pong"
}Result with connection ssh. All come up Unreachable ... because Ansible is using the currently logged in user "neteng" to connect that is not a valid user configured on the devices.
neteng@neteng-dev:~$ ansible -i hosts all -m ping
Ubuntu | UNREACHABLE! => {
"changed": false,
"msg": "Failed to connect to the host via ssh: neteng@192.168.106.152: Permission denied (publickey,password).",
"unreachable": true
}
TEST-HOST | UNREACHABLE! => {
"changed": false,
"msg": "Failed to connect to the host via ssh: Warning: Permanently added '192.168.106.142' (RSA) to the list of known hosts.\r\nneteng@192.168.106.142: Permission denied (publickey,keyboard-interactive,password).",
"unreachable": true
}
NoHost | UNREACHABLE! => {
"changed": false,
"msg": "Failed to connect to the host via ssh: ssh: connect to host 192.168.200.200 port 22: Connection timed out",
"unreachable": true
}hosts file with username and password. I have different users .. if the same user has access to both devices, username and password can be given only once under [all:vars]
[all:vars]
ansible_connection=ssh
[hosts]
TEST-HOST ansible_host=192.168.106.142 ansible_user=admin ansible_ssh_pass=cisco
Ubuntu ansible_host=192.168.106.152 ansible_user=neteng ansible_ssh_pass=neteng
NoHost ansible_host=192.168.200.200
Result - Ubuntu is Success as it can ssh with a valid user. Cisco is now Failed vs Unreachable earlier. Cisco router dint recognise bash command - /bin/sh -c '/usr/bin/python
ansible -i hosts all -m ping
Ubuntu | SUCCESS => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"ping": "pong"
}
TEST-HOST | FAILED! => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"module_stderr": "Shared connection to 192.168.106.142 closed.\r\n",
"module_stdout": "\r\nLine has invalid autocommand \"/bin/sh -c '/usr/bin/python '\"'\"'Line has invalid autocommand \"/bin/sh -c '\"'\"'\"'\"'\"'\"'\"'\"'( umask 77 && mkdir -p \"` echo Line has invalid autocommand \"/bin/sh -c '\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'\"'echo ~admin && sleep 0'\"'\"'\"'\"'\"'\"'\"'\"'\"",
"msg": "MODULE FAILURE\nSee stdout/stderr for the exact error",
"rc": 0
}
NoHost | UNREACHABLE! => {
"changed": false,
"msg": "Failed to connect to the host via ssh: ssh: connect to host 192.168.200.200 port 22: Connection timed out",
"unreachable": true
}with connection - ssh and using net_ping. All failed because ssh is not valid for net_ping module we need to use local
ansible -i hosts all -m net_ping
NoHost | FAILED! => {
"changed": false,
"msg": "Connection type ssh is not valid for this module"
}
TEST-HOST | FAILED! => {
"changed": false,
"msg": "Connection type ssh is not valid for this module"
}
Ubuntu | FAILED! => {
"changed": false,
"msg": "Connection type ssh is not valid for this module"
}with connection - local
Ubuntu | FAILED! => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"msg": "missing required arguments: dest"
}
TEST-HOST | FAILED! => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"msg": "missing required arguments: dest"net_ping module for network devices requires an additional parameter dest=192.168.106.142.
For multiple hosts we can give dest like this
net_ping:
dest: 10.10.10.10
more info - https://docs.ansible.com/ansible/latest/modules/net_ping_module.htmlFor my one host, I can pass an additional argument to the module from cli using -a dest=192.168.106.142
ansible -i hosts TEST-HOST -m net_ping -a dest=192.168.106.142
TEST-HOST | SUCCESS => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"commands": [
"ping 192.168.106.142"
],
"packet_loss": "0%",
"packets_rx": 5,
"packets_tx": 5,
"rtt": {
"avg": 1,
"max": 1,
"min": 1
}
}
Hope this helps
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