While looking for a way to handle certain tasks differently inside a LXC container and on a (physical) host, I first tried to use ansible variables based on some hardware.
But the problem, as you might know, is that LXC containers basically see the same hardware as the host because they use the same kernel (there is no hardware virtualization layer in between).
Note: That's what makes the containers much faster than VM's, just sayin'.
So checking for hardware will not work, as both host and container see the same:
$ ansible host -m setup | grep ansible_system_vendor
$ ansible container -m setup | grep ansible_system_vendor
When I looked through all available variables coming from "-m setup", I stumbled across ansible_virtualization_role at the end of the output. Looks interesting!
$ ansible host -m setup | grep ansible_virtualization_role
$ ansible container -m setup | grep ansible_virtualization_role
huj from wrote on Apr 24th, 2019:
Mine just says NA for both - it's a VPS that has LXC on so the method is biased
AWS Android Ansible Apple Atlassian Automation BSD Backup Bash Bluecoat CMS Chef Cloud Consul Container Containers CouchDB DB DNS Database Databases Docker ELK ElasticSearch Elasticsearch Filebeat FreeBSD GlusterFS Grafana Graphics HAProxy HTML Hacks Hardware Icinga Icingaweb2 InfluxDB Internet Java Kibana Kubernetes LXC Linux Logstash Mac Macintosh Mail MariaDB Minio MongoDB Monitoring Multimedia MySQL NFS Nagios Network Nginx OSSEC OTRS PGSQL PHP Perl Personal PostgreSQL Postgres PowerDNS Proxmox Proxy Rancher SSL Security Shell SmartOS Solaris Surveillance SystemD TLS Tomcat Ubuntu Unix VMware Varnish Virtualization Windows Wireless Wordpress Wyse ZFS Zoneminder