tools.utils: kvm/qemu-ga.watcher.sh.sh annotate

awgur@0	1 #!/bin/sh
awgur@0	2 # devel.a0fs.ru -- ncc.mon.kvm.tool:/root/libexec/qemu-ga.watcher.sh -- v0.r202312.1
awgur@0	3 # Запускается через crontab:
awgur@0	4 # /15 * * * /bin/sh /root/libexec/qemu-ga.watcher.sh
awgur@0	5 #
awgur@0	6 export PATH="/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin"
awgur@0	7
awgur@0	8 NAME="qemu-ga"
awgur@0	9
awgur@0	10
awgur@0	11 log () {
awgur@0	12 logger -t "qemu-ga.watcher" "$@"
awgur@0	13 }
awgur@0	14
awgur@0	15
awgur@0	16 check_get_proc () {
awgur@0	17 ps -Ao comm,pcpu \| awk -v pname="$NAME" '\
awgur@0	18 BEGIN {buf = 0}; \
awgur@0	19 $1 == pname {if (buf < $2) buf = $2 * 10 } \
awgur@0	20 END {print buf} \
awgur@0	21 '
awgur@0	22 }
awgur@0	23
awgur@0	24
awgur@0	25 check () {
awgur@0	26 [ $(check_get_proc) -ge 800 ]
awgur@0	27 }
awgur@0	28
awgur@0	29
awgur@0	30 {
awgur@0	31 flag="1"
awgur@0	32 echo CHECK
awgur@0	33 if check ; then
awgur@0	34 log -p user.error "qemu agent overload: watching..."
awgur@0	35 cntr=0
awgur@0	36
awgur@0	37 while [ $cntr -le 100 ] ; do
awgur@0	38 sleep 1
awgur@0	39 cntr=$(( $cntr + 1 ))
awgur@0	40
awgur@0	41 if ! check ; then
awgur@0	42 flag=""
awgur@0	43 break
awgur@0	44
awgur@0	45 fi
awgur@0	46 done
awgur@0	47
awgur@0	48 if [ "$flag" ] ; then
awgur@0	49 log -p user.error "qemu agent overload: restarting"
awgur@0	50 systemctl restart qemu-guest-agent
awgur@0	51
awgur@0	52 fi
awgur@0	53
awgur@0	54 } 2>&1 \| log
awgur@0	55

tools.utils