shell脚本监控系统负载,并在负载过大时发送邮件报警
2010-01-04 17:26
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shell脚本监控系统负载,并在负载过大时发送邮件报警
#!/bin/bash
# Eamil:longkaty@sina.com
# 用途:负载监控
# 描述:shell脚本监控系统负载,并在负载过大时发送邮件报警
# 用法:./scriptname.sh
# Set up limit below
NOTIFY="6.0"
# admin user email id
EMAIL="root"
# Subject for email
SUBJECT="Alert $(hostname) load average"
# -----------------------------------------------------------------
# Os Specifc tweaks do not change anything below ;)
OS="$(uname)"
TRUE="1"
if [ "$OS" == "FreeBSD" ]; then
TEMPFILE="$(mktemp /tmp/$(basename $0).tmp.XXX)"
FTEXT='load averages:'
elif [ "$OS" == "Linux" ]; then
TEMPFILE="$(mktemp)"
FTEXT='load average:'
fi
# get first 5 min load
F5M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f1)"
# 10 min
F10M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f2)"
# 15 min
F15M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f3)"
# mail message
# keep it short coz we may send it to page or as an short message (SMS)
echo "Load average Crossed allowed limit $NOTIFY." >> $TEMPFILE
echo "Hostname: $(hostname)" >> $TEMPFILE
echo "Local Date & Time : $(date)" >> $TEMPFILE
# Look if it crossed limit
# compare it with last 15 min load average
RESULT=$(echo "$F15M > $NOTIFY" | bc)
# if so send an email
if [ "$RESULT" == "$TRUE" ]; then
mail -s "$SUBJECT" "$EMAIL" < $TEMPFILE
fi
# remove file
rm -f $TEMPFILE
#!/bin/bash
# Eamil:longkaty@sina.com
# 用途:负载监控
# 描述:shell脚本监控系统负载,并在负载过大时发送邮件报警
# 用法:./scriptname.sh
# Set up limit below
NOTIFY="6.0"
# admin user email id
EMAIL="root"
# Subject for email
SUBJECT="Alert $(hostname) load average"
# -----------------------------------------------------------------
# Os Specifc tweaks do not change anything below ;)
OS="$(uname)"
TRUE="1"
if [ "$OS" == "FreeBSD" ]; then
TEMPFILE="$(mktemp /tmp/$(basename $0).tmp.XXX)"
FTEXT='load averages:'
elif [ "$OS" == "Linux" ]; then
TEMPFILE="$(mktemp)"
FTEXT='load average:'
fi
# get first 5 min load
F5M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f1)"
# 10 min
F10M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f2)"
# 15 min
F15M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f3)"
# mail message
# keep it short coz we may send it to page or as an short message (SMS)
echo "Load average Crossed allowed limit $NOTIFY." >> $TEMPFILE
echo "Hostname: $(hostname)" >> $TEMPFILE
echo "Local Date & Time : $(date)" >> $TEMPFILE
# Look if it crossed limit
# compare it with last 15 min load average
RESULT=$(echo "$F15M > $NOTIFY" | bc)
# if so send an email
if [ "$RESULT" == "$TRUE" ]; then
mail -s "$SUBJECT" "$EMAIL" < $TEMPFILE
fi
# remove file
rm -f $TEMPFILE
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