Hello,
I'm trying to develop a script for dynamic inventory, following this (poor)
documentation
http://docs.ansible.com/developing_inventory.html
I tested the script with the command
*ansible --list-hosts database*
which works fine and return the database hosts.
I logged the calls to the script and I can see the first call made by
ansible (--list) outputs the list of hosts and their groups
{
"database": {
"hosts": [
"host1",
"host2"
]
},
"apache": {
"hosts": [
"host3",
"host4"
]
}
}
Ansible then iterates through all the hosts and call the script with --host
<hostname>.
["--list"]
["--host", "host1"]
["--host", "host2"]
["--host", "host3"]
["--host", "host4"]
The performance problem obviously appears when the list of hosts and groups
grows.
While I expect the '--host' call to be done only on the database hosts, it
seems ansible is iterating through the full catalog.
Is that expected? Any way I can avoid this behavior?
Thanks,
Matteo
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