pssh

Example

pssh -l root -h  pool_list.txt -i --inline-stdout -O ConnectTimeout=5 -O StrictHostKeyChecking=no -t 300 -p 50 'zgrep "no longer" /home/enstore/dcache-log/* 2>/dev/null' | grep "p-" | grep "2021-09-23"

(with the pool_list extraction from the access logs, you can do this go the distribution of the error):

grep 'dcache-log' uuid.log | cut -d '.' -f1 | cut -d '/' -f5 | uniq -c | sort