monitor-host

#!/bin/bash
# @Function
## monitor host:network io memory cpu 
#
# @Usage
#   $ ./monitor-host.sh
#
# @author Bryant Hang

readonly PROG=`basename $0`

usage() {
    local out
    [ -n "$1" -a "$1" != 0 ] && out=/dev/stderr || out=/dev/stdout

    > $out cat <<EOF
Usage: ${PROG} [OPTION] [delay [count]]

Example: ${PROG} -l ./monitor_logs

Options:
    -l, --log-path   monitor logs output path,default is ./monitor_logs 
    -h, --help      display this help and exit
    --stop  stop monitor processes
    delay is the delay between updates in seconds. default is 1
    count is the number of log outputs. deault is 10
EOF
    exit $1
}

stop(){
    cat /tmp/MONIOTR_PIDS | while read pid
    do
        if [[ $pid == *[0-9]* ]]; then
            kill -9 $pid
            echo "kill process ${pid}"
        fi
    done

    echo -n > /tmp/MONIOTR_PIDS
    echo
    echo 'Done stop monitor threads...'

    exit 0
}

readonly ARGS=`getopt -n "$PROG" -a -o l:h -l log-path:,help:,stop -- "$@"`
[ $? -ne 0 ] && usage 1
eval set -- "${ARGS}"

while true; do
    case "$1" in
    -l|--log-path)
        log_path="$2"
        shift 2
        ;;
    --stop)
        stop
        ;;
    -h|--help)
        usage
        ;;
    --)
        shift
        break
        ;;
    esac
done

delay=${1:-1}
count=${2:-10}
log_path=${log_path:-'monitor_logs'}

if ! [ -d $log_path ]; then
    mkdir -p $log_path
fi

readonly cur_date="`date +%Y%m%d`"

readonly top_log_path=$log_path'/top_'$cur_date'.log'
readonly memory_log_path=$log_path'/memory_'$cur_date'.log'
readonly cpu_log_path=$log_path'/cpu_'$cur_date'.log'
readonly io_log_path=$log_path'/io_'$cur_date'.log'
readonly network_log_path=$log_path'/network_'$cur_date'.log'

echo -n > /tmp/MONIOTR_PIDS
# total performance check
top -b -d $delay -n $count >> $top_log_path 2>&1 &
echo $! >> /tmp/MONIOTR_PIDS

# memory check
vmstat $delay $count >> $memory_log_path 2>&1 &
echo $! >> /tmp/MONIOTR_PIDS

# cpu check
sar -u $delay $count >> $cpu_log_path 2>&1 &
echo $! >> /tmp/MONIOTR_PIDS

# IO check
iostat $delay $count >> $io_log_path 2>&1 &
echo $! >> /tmp/MONIOTR_PIDS

# network check
sar -n DEV $delay $count >> $network_log_path 2>&1 &
echo $! >> /tmp/MONIOTR_PIDS

echo 'Output logs to '$log_path'....'