Comments - SST smethod: rsync_wan
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Just in case it still matters, to use rsync_wan method one needs to rename/copy/link the usual wsrep_sst_rsync script to wsrep_sst_rsync_wan. Note however, that it will reduce network traffic at the expense of extra IO and therefore may not provide the expected speed gain.
I've done this by making a symlink, I'm just wondering why this isn't done by default? I'd also like to verify if the delta transfer is indeed used, but I'm not sure how I can verify this?