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monitor.sh
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#!/bin/bash
# monitor.sh begins here
# Save this script as monitor.sh
# Allocate read write execute permissions: chmod +rwx monitor.sh
# Help available with: ./monitor.sh -h
# License: Creative Commons Zero - https://creativecommons.org/publicdomain/zero/1.0/
# To the extent possible under law, Red Hat, Inc. has dedicated all copyright to this software to the public domain worldwide, pursuant to the CC0 Public Domain Dedication.
# This software is distributed without any warranty.
VERSION=47
USAGE=$(cat <<-EOM
Usage: monitor.sh [-d DELAY] [-i ITERATIONS] [-h]
This script collects data relevant to network debugging.
Valid parameters are all optional.
-d DELAY
Specifies a delay between collections. Default is 30 seconds.
Examples:
./monitor.sh -d 10 # 10 seconds
./monitor.sh -d 2 # 2 seconds
-i ITERATIONS
Specifies the number of collections. Default is to run forever.
Examples:
./monitor.sh -i 10 # 10 iterations
./monitor.sh -i 2 # 2 iterations
-p
Disables process collection in "ss", except when SS_OPTS used.
Default is process collection enabled when SS_OPTS not provided.
Example:
./monitor.sh -p
-h
Displays this help message.
Example:
./monitor.sh -h
Options can be combined.
Example:
./monitor.sh -d 10 -i 360 # run every 10 secs, for an hour
This script recognizes an environment variable SS_OPTS which will
override the script's default command line switches when running
the 'ss' utility.
Example:
env SS_OPTS="-pantoemi sport = :22" bash monitor.sh
EOM
)
## defaults
DELAY=30
ITERATIONS=-1
DEF_SS_OPTS="-noemitaup"
DEF_SS_OPTS_NOP="-noemitau"
## option parsing
REAL_SS_OPTS=${SS_OPTS:-$DEF_SS_OPTS}
while getopts ":d:i:ph" OPT; do
case "$OPT" in
"d")
# something was passed, check it's a positive integer
if [ "$OPTARG" -eq "$OPTARG" ] 2>/dev/null && [ "$OPTARG" -gt 0 ] 2>/dev/null; then
DELAY="$OPTARG"
else
echo "ERROR: $OPTARG not a valid option for delay. Run 'monitor.sh -h' for help."
exit 1
fi
;;
"i")
# something was passed, check it's a positive integer
if [ "$OPTARG" -eq "$OPTARG" ] 2>/dev/null && [ "$OPTARG" -gt 0 ] 2>/dev/null; then
ITERATIONS="$OPTARG"
else
echo "ERROR: $OPTARG not a valid option for iterations. Run 'monitor.sh -h' for help."
exit 1
fi
;;
"p")
REAL_SS_OPTS=${SS_OPTS:-$DEF_SS_OPTS_NOP}
;;
"h")
echo "$USAGE"
exit 0
;;
":")
echo "ERROR: -$OPTARG requires an argument. Run 'monitor.sh -h' for help."
exit 1
;;
"?")
echo "ERROR: -$OPTARG is not a valid option. Run 'monitor.sh -h' for help."
exit 1
;;
esac
done
#
# Removed default addition of -S for ss options due to
# https://bugzilla.redhat.com/show_bug.cgi?id=1982804
# which causes ss coredump in RHEL8.0 - RHEL8.4. when there
# are active SCTP associations
#
#if [ -z "$SS_OPTS" ] ; then
# if ! ss -S 2>&1 | grep -q "invalid option"; then
# REAL_SS_OPTS+="S"
# fi
#fi
## reporting
if [ "$ITERATIONS" -gt 0 ]; then
echo "Running network monitoring with $DELAY second delay for $ITERATIONS iterations."
else
echo "Running network monitoring with $DELAY second delay. Press Ctrl+c to stop..."
fi
## one-time commands
MQDEVS=( $(tc qdisc show | awk '/^qdisc mq/{print $(NF-1)}') )
## data collection loop
while [ "$ITERATIONS" != 0 ]; do
#start timer in background
eval sleep "$DELAY" &
now=$(date +%Y_%m_%d_%H)
then=$(date --date="yesterday" +%Y_%m_%d_%H)
rm -rf "$HOSTNAME-network_stats_$then"
mkdir -p "$HOSTNAME-network_stats_$now"
if ! [ -e "$HOSTNAME-network_stats_$now/version.txt" ]; then
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" > "$HOSTNAME-network_stats_$now/version.txt"
echo "This output created with monitor.sh version $VERSION" >> "$HOSTNAME-network_stats_$now/version.txt"
echo "See https://access.redhat.com/articles/1311173" >> "$HOSTNAME-network_stats_$now/version.txt"
echo "Delay: $DELAY" >> "$HOSTNAME-network_stats_$now/version.txt"
echo "Iterations: $ITERATIONS" >> "$HOSTNAME-network_stats_$now/version.txt"
echo "SS_OPTS: $REAL_SS_OPTS" >> "$HOSTNAME-network_stats_$now/version.txt"
fi
if ! [ -e "$HOSTNAME-network_stats_$now/sysctl.txt" ]; then
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" > "$HOSTNAME-network_stats_$now/sysctl.txt"
sysctl -a 2>/dev/null >> "$HOSTNAME-network_stats_$now/sysctl.txt"
fi
if ! [ -e "$HOSTNAME-network_stats_$now/ip-address.txt" ]; then
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" > "$HOSTNAME-network_stats_$now/ip-address.txt"
ip address list >> "$HOSTNAME-network_stats_$now/ip-address.txt"
fi
if ! [ -e "$HOSTNAME-network_stats_$now/ip-route.txt" ]; then
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" > "$HOSTNAME-network_stats_$now/ip-route.txt"
ip route show table all >> "$HOSTNAME-network_stats_$now/ip-route.txt"
fi
if ! [ -e "$HOSTNAME-network_stats_$now/uname.txt" ]; then
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" > "$HOSTNAME-network_stats_$now/uname.txt"
uname -a >> "$HOSTNAME-network_stats_$now/uname.txt"
fi
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/ip_neigh"
ip neigh show >> "$HOSTNAME-network_stats_$now/ip_neigh"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/tc_qdisc"
tc -s qdisc >> "$HOSTNAME-network_stats_$now/tc_qdisc"
if [ "${#MQDEVS[@]}" -gt 0 ]; then
for MQDEV in "${MQDEVS[@]}"; do
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/tc_class_$MQDEV"
tc -s class show dev "$MQDEV" >> "$HOSTNAME-network_stats_$now/tc_class_$MQDEV"
done
fi
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/netstat"
netstat -s >> "$HOSTNAME-network_stats_$now/netstat"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/nstat"
nstat -az >> "$HOSTNAME-network_stats_$now/nstat"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/ss"
eval "ss $REAL_SS_OPTS" >> "$HOSTNAME-network_stats_$now/ss"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/interrupts"
cat /proc/interrupts >> "$HOSTNAME-network_stats_$now/interrupts"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/meminfo"
cat /proc/meminfo >> "$HOSTNAME-network_stats_$now/meminfo"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/softnet_stat"
cat /proc/net/softnet_stat >> "$HOSTNAME-network_stats_$now/softnet_stat"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/vmstat"
cat /proc/vmstat >> "$HOSTNAME-network_stats_$now/vmstat"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/ps"
ps -alfe >> "$HOSTNAME-network_stats_$now/ps"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/ps_extended"
ps -o cpuid,pid,lwp,pri,nice,stat,pcpu,pmem,vsize,bsdtime,comm,cmd -eL >> "$HOSTNAME-network_stats_$now/ps_extended"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/mpstat"
eval mpstat -A "$DELAY" 1 2>/dev/null >> "$HOSTNAME-network_stats_$now/mpstat" &
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/top"
top -c -b -n1 >> "$HOSTNAME-network_stats_$now/top"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/numastat"
numastat 2>/dev/null >> "$HOSTNAME-network_stats_$now/numastat"
if [ -e /proc/softirqs ]; then
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/softirqs"
cat /proc/softirqs >> "$HOSTNAME-network_stats_$now/softirqs"
fi
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/sockstat"
cat /proc/net/sockstat >> "$HOSTNAME-network_stats_$now/sockstat"
if [ -e /proc/net/sockstat6 ]; then
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/sockstat6"
cat /proc/net/sockstat6 >> "$HOSTNAME-network_stats_$now/sockstat6"
fi
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/netdev"
cat /proc/net/dev >> "$HOSTNAME-network_stats_$now/netdev"
for DEV in $(ip a l | grep mtu | awk '{print $2}' | awk -F ":" '{print $1}'); do echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/ethtool_$DEV"; ethtool -S "$DEV" >> "$HOSTNAME-network_stats_$now/ethtool_$DEV" 2>/dev/null; done
for DEV in $(ip a l | grep mtu | awk '{print $2}' | awk -F ":" '{print $1}'); do echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/sys_statistics_$DEV"; find /sys/class/net/${DEV}/statistics/ -type f 2>/dev/null | xargs grep . | awk -F "/" '{print $NF}' >> "$HOSTNAME-network_stats_$now/sys_statistics_$DEV"; done
if [ -e /proc/net/sctp ]; then
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/sctp-assocs"
cat /proc/net/sctp/assocs >> "$HOSTNAME-network_stats_$now/sctp-assocs"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/sctp-snmp"
cat /proc/net/sctp/snmp >> "$HOSTNAME-network_stats_$now/sctp-snmp"
fi
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/conntrack_list"
conntrack -L >> "$HOSTNAME-network_stats_$now/conntrack_list"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/conntrack_stats"
conntrack --stats >> "$HOSTNAME-network_stats_$now/conntrack_stats"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/sa1"
/usr/lib64/sa/sa1 1 1 >> "$HOSTNAME-network_stats_$now/sa1"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/iostat"
iostat -Ntmx 1 2 >> "$HOSTNAME-network_stats_$now/iostat"
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/pmd_rxq_show"
ovs-appctl dpif-netdev/pmd-rxq-show >> "$HOSTNAME-network_stats_$now/pmd_rxq_show" 2>/dev/null
echo "===== $(date +"%F %T.%N%:z (%Z)") =====" >> "$HOSTNAME-network_stats_$now/pmd_stats_show"
ovs-appctl dpif-netdev/pmd-stats-show >> "$HOSTNAME-network_stats_$now/pmd_stats_show" 2>/dev/null
if [ "$ITERATIONS" -gt 0 ]; then let ITERATIONS-=1; fi
# Wait till background jobs are finished
wait
done
#
# monitor.sh ends here