I have one question, I will try to describe to you my problem, please check and tell me is that possible to do.
I'm using molecule and DroneCI for automatic testing my playbooks. Because molecule doesn't have support for Proxmox natively, but Ansible has Proxmox module, I wrote prepare playbook which creates LXC container on Proxmox server. That works well, but problem is that because my LXC container get IP from DHCP server and I don't have a solution to run my playbook on that newly created LXC because I don't have that IP in my inventory.
Does exists some solution for this problem or does anyone have some idea how can I do this?
Thank you.
Both prepare.yml and playbook.yaml are ansible playbooks, so it is fully up to you what you use on hosts: .... Feel free to use whatever host or group you want instead of all.
Related
I am unable to find an ansible module that adds ip routes.
Basically the command I'm looking for should allow something like:
sudo ip route add 12.3.4.0/24 via 123.456.78.90
I found net_static_route_module which seems related, but is deprecated since 2022-06-01.
A simple solution would be:
- name: Add a route
ansible.builtin.shell:
cmd: sudo ip route add 12.3.4.0/24 via 123.456.78.90
of course, but inbuilt modules are usually better.
Additional information
This task will be executed on a subset of all nodes (ubuntu 22.04 machines that are all part of a cloud cluster using openstack) (specified by groups). Concrete subnets and IPs will be defined using variables.
An example hostfile could look like this:
master:
hosts:
localhost:
ansible_connection: local
ansible_python_interpreter: /usr/bin/python3
ansible_user: ubuntu
ip: localhost
workers:
children:
ephemeral:
hosts: {}
hosts:
someworker:
ansible_connection: ssh
ansible_python_interpreter: /usr/bin/python3
ansible_user: ubuntu
This playbook will be used to setup wireguard. Every vpn-node (those nodes will be connected with each other via wireguard) is connected in its own subnet with multiple worker nodes. Those workers need to add the ip route to get back to the master node which is in a different subnet, but in the same virtual subnet created by wireguard and the vpn nodes). I do not think that this is related to my question, but I might overlook how this can affect the right answer.
From your description I understand that you like to configure the network route settings on a Linux based operating system (Debian/GNU Linux, Ubuntu 22.04) and not on a dedicated router or switch.
Whereby the mentioned module net_static_route was for providing
... declarative management of static IP routes on network appliances (routers, switches et. al.).
and became deprecated
Removed in: major release after 2022-06-01
Why: Updated modules released with more functionality
Alternative: Use platform-specific [netos]_static_route module
it further recommends to use the vendor and platform specific modules instead.
Certain Linux Distributions tend to integrate and use NetworkManager for creating and managing network connections.
Documentation
RHEL7 - Getting Started with NetworkManager
ArchLinux - NetworkManager
Ubuntu - NetworkManager
...
So the respective Ansible module for this is nmcli module – Manage Networking. You may have a look into the Parameters and Examples, especially into the parameters for route*.
Further Readings
For more examples have a look at
How to configure network settings with Ansible system roles
Linux System Roles
I'm using Ubuntu Linux
I have created an inventory file and I have put my own system IP address there.
I have written a playbook to install the nginx package.
I'm getting the following error:
false, msg" : Failed to connect to the host via ssh: connect to host myip : Connection refused, unreachable=true
How can I solve this?
You could use the hosts keyword with the value localhost
- name: Install nginx package
hosts: localhost
tasks:
- name: Install nginx package
apt:
name: nginx
state: latest
Putting your host IP directly in your inventory treats your local machine as any other remote target. Although this can work, ansible will use the ssh connection plugin by default to reach your IP. If an ssh server is not installed/configured/running on your host it will fail (as you have experienced), as well as if you did not configure the needed credentials (ssh keys, etc.).
You don't need to (and in most common situations you don't want to) declare localhost in your inventory to use it as it is implicit by default. The implicit localhost uses the local connection plugin which does not need ssh at all and will use the same user to run the tasks as the one running the playbook.
For more information on connection plugins, see the current list
See #gary lopez answer for an example playbook to use localhost as target.
I have a git lab runner whose job it is to:
a) Create IaC using Terraform. (7 ec2 instances with a defined keypair)
b) Run an ansible playbook that will need to SSH to all 7 instances and configure Kafka.
At the moment, I have automated part a. I then ssh to one of the instances using a private key. copy the ansible code and the private key to the instance and then execute the following cmd to run the ansible:
ansible-playbook --private-key=/home/ec2-user/keyname.pem hosts.yml all.yml
This all works fine but obviously, I want to automate the running of the ansible in a gitlab runner without having to store my private key on the docker container or in the git repo.
I have briefly investigated SSM but don't really understand how that all works.
Note: I need the key for two purposes.
ssh into the first instance
referenced in the host.yml so that the ansible playbook can connect to all other instances
Thanks in advance everyone.
Cheers
Adam
for some time I have tried to run vagrant and it worked well with ansible. However the images work completely different from images created manually. Even it looks like ssh, network, shared folders etc are slightly different configured and can only be used in the vagrant tool chain.
So I would like to only have ansible and virtualbox on the host and use the same ssh connection for ansible as for the user
Any hints, roles, examples on how to do that (google is not a help here)
here is a short example (so maybe it is possible) if ansible could wait for the vms to be started !?
---
- hosts: all
tasks:
- name: list VMs
shell: VBoxManage list vms
args:
executable: /bin/bash
I was wondering if it were possible to tell Ansible to set up a VPN connection before executing the rest of the playbook. I've googled around, but haven't seen much on this.
You could combine a local playbook to setup a VPN and a playbook to run your tasks against a server.
Depending on whats the job you can use ansible or a shell script to connect the VPN. Maybe there should be another playbook to disconnect afterwards.
As result you will have three playbooks and one to combine them via include:
- include: connect_vpn.yml
- include: do_stuff.yml
- include: disconnect_vpn.yml
Check How To Use Ansible and Tinc VPN to Secure Your Server Infrastructure.
Basically, you need to install thisismitch/ansible-tinc playbook and create a hosts inventory file with the nodes that you want to include in the VPN, for example:
[vpn]
prod01 vpn_ip=10.0.0.1 ansible_host=162.243.125.98
prod02 vpn_ip=10.0.0.2 ansible_host=162.243.243.235
prod03 vpn_ip=10.0.0.3 ansible_host=162.243.249.86
prod04 vpn_ip=10.0.0.4 ansible_host=162.243.252.151
[removevpn]
Then you should review the contents of the /group_vars/all file such as:
---
netname: nyc3
physical_ip: "{{ ansible_eth1.ipv4.address }}"
vpn_interface: tun0
vpn_netmask: 255.255.255.0
vpn_subnet_cidr_netmask: 32
where:
physical_ip is IP address which you want tinc to bind to;
vpn_netmask is the netmask that the will be applied to the VPN interface.
If you're using Amazon Web Services, check out the ec2_vpc_vpn module which can create, modify, and delete VPN connections. It uses boto3/botocore library.
For example:
- name: create a VPN connection
ec2_vpc_vpn:
state: present
vpn_gateway_id: vgw-XXXXXXXX
customer_gateway_id: cgw-XXXXXXXX
- name: delete a connection
ec2_vpc_vpn:
vpn_connection_id: vpn-XXXXXXXX
state: absent
For other cloud services, check the list of Ansible Cloud Modules.