2.sh

#! /bin/bash
#
# hapee_tracing.sh
KILL_FILE="/tmp/kill_hapee_tracing"
BASE_DIR="/var/log/pidstats/"
SOCKET_DIR="/run/lb_engine/"
PROCESS_NUMBER="$1"
PIDS=( $(cat /run/hapee-lb.pid) )
PID_INDEX=$(($PROCESS_NUMBER-1))
PID=${PIDS[${PID_INDEX}]}


mkdir -p "${BASE_DIR}"


while true ; do
        if [ -f "${KILL_FILE}" ] ; then
            exit 0
        fi
        timeout 60 pidstat -u -p "${PID}" 1 | stdbuf -i0 -o0 -e0 egrep 'hapee-lb' | stdbuf -i0 -o0 -e0 awk '{print $6}' | while read line
        do
            if [ -f "${KILL_FILE}" ] ; then
                exit 0
            fi
            system_cpu=$(echo "${line}" | awk -F. '{print $1}')
            if [ "${system_cpu}" -gt 30 ] ; then
                echo 'show sess all' | socat ${SOCKET_DIR}process-${PROCESS_NUMBER}.sock stdio > ${BASE_DIR}sessions_$(date +%F:%H:%M:%S)_${PROCESS_NUMBER}_${PID} &
                timeout 5 strace -ttvs200 -p "${PID}" -o ${BASE_DIR}strace_$(date +%F:%H:%M:%S)_${PROCESS_NUMBER}_${PID}
            fi
        done
        PIDS=( $(cat /run/hapee-lb.pid) )
        PID=${PIDS[${PID_INDEX}]}
done