I would phrase it in this way:
attributes and filters are two different level of abstractions.
- filters (and upload-filters) are expression to apply to nodes.
- attributes can be part of those expressions (with other elements). Attribute is just a node → string function. We also have node_values (which is node → number function)
But attributes (and values) can be also used in other expressions (invariant, selector, …)
I strongly recommend to test placements locally, as it’s easy to shoot yourself on your own foot.
Examples from my shell history:
stbb placement nodes --placement=3 --satellite spiridon --placement-config=.../placement.yaml --selector last_ip
stbb placement select-pool --placement=3 --selector 'last_ip' --k 10000 --satellite spiridon --placement-config=.../placement.yaml
--selector is just the grouping for the output.
- The first command prints out the node pool.
- The second one simulates nodes selection (10000 times)
I test every single placement change first with these simulations.
stbb = GitHub - elek/stbb · GitHub