One-liners

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Apache MaxRequestWorkers

grep -i 'MaxRequestWorkers' $(locate apache || locate httpd | grep -iE "error.log$")

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PHP Max_Children

Check for all logged instances of max_children limit being reached

grep -i max_children $(locate fpm | grep -iE "error.log$")  

Check specific date's occurrences of PHP max_children being reached (date needs updating)

grep -i max_children $(locate fpm | grep -iE "error.log$") | grep -i '30-May' | cut -d' ' -f5 | tr -d ']' | sort | uniq -c | sort -nr | awk 'BEGIN {print "Total PHP max_children errors today"}; {print $0}' 

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Traffic Analysis

(File paths will need updating for these commands)

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wp-login requests

grep -i 'wp-login' /var/www/vhosts/*/logs/access_ssl_log | cut -d ':' -f1 | sort | uniq -c

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xmlrpc requests

grep -i 'xmlrpc' /var/www/vhosts/*/logs/access_ssl_log | cut -d ':' -f1 | sort | uniq -c

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bot traffic user agents

 awk -F'"' '{print $6}' /var/www/vhosts/domain/logs/access_ssl_log | sort | uniq -c | sort -nr | head -20 | grep -iE 'bot|crawler'

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MySQL Tuner

wget -O mysqltuner.pl mysqltuner.pl && perl mysqltuner.pl

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