San's Notebook

#!/bin/bash
 
E_OK=0;E_WARN=1;E_CRIT=2;E_UNKNOWN=3 #Коды возврата Nagios
 
WARN=20; CRIT=10 #Задаем пороги предупреждений и критического состояния по-умолчанию.
# Считываем пороги, если они заданы в командной строке
if [[ -n "$1" ]]; then WARN="$1";fi
if [[ -n "$2" ]]; then CRIT="$2";fi
 
res=$E_OK; res_txt="OK"
 
read check_time CPU usr nice sys iowait irq soft steal guest gnice idle <<<$(S_TIME_FORMAT=ISO mpstat --dec=0 1 1|tail -n2|head -n1)
 
if [[ $idle -le $WARN ]]; then res=$E_WARN; res_txt="WARN"; fi
if [[ $idle -le $CRIT ]]; then res=$E_CRIT; res_txt="CRIT"; fi
 
echo -n "$res_txt: Idle=$idle% usr=$usr% nice=$nice% sys=$sys% iowait=$iowait% irq=$irq% soft=$soft% steal=$steal% guest=$guest% gnice=$gnice%"
echo "|Idle=$idle%;$WARN;$CRIT;; usr=$usr%;;;; nice=$nice%;;;; sys=$sys%;;;; iowait=$iowait%;;;; irq=$irq%;;;; soft=$soft%;;;; steal=$steal%;;;; guest=$guest%;;;; gnice=$gnice%;;;;"
exit $res

#!/bin/sh
 
# Exit-Codes:
STATE_OK=0;STATE_WARNING=1;STATE_CRITICAL=2;STATE_UNKNOWN=3
 
usage()
{
 cat <<EOF
 usage: $0 interface
 This script checks interface state
EOF
}
 
if [ -z "$1" ]; then usage; exit $STATE_UNKNOWN; fi
 
int="$1"
res=$STATE_OK; txt="OK"
 
lnk=$(ip link show $int|head -n1 |sed 's/\(.*)(state \w*)(.*\)/\2/') #'
 
if [ "$lnk" != "state UP" ]; then res=$STATE_CRITICAL; txt="CRITICAL"; fi
 
echo "$txt:Interface $int $lnk"
 
exit $res

#!/bin/sh
 
E_OK=0;E_WARN=1;E_CRIT=2;E_UNKNOWN=3
 
#Defaults
WARN=100
CRIT=200
WARNPCT=10
CRITPCT=20
PKTCNT=5
PKTSIZE=6050
 
res=$E_OK;txt="OK"
 
usage()
{
cat <<EOF
usage: $0 -H host [OPTIONS]
This script checks ping to host and verifies packets loss and round trip time
OPTIONS:
   -h       Help
   -w wrtt  WARNING  RTT
   -c crtt  CRITICAL RTT
   -W wpct  WARNING  Packets loss %
   -C cpct  CRITICAL Packets loss %
   -p num   Number of packets
   -s size  Packet size
EOF
}
 
while getopts H:c:w:C:W:p:s: OPTION
do
     case $OPTION in
        H)
           CHECKHOST=`echo $OPTARG | grep -v "^-"`
           [ ! "$?" = 0 ] && echo "Error: missing or illegal option value" && exit $STATE_UNKNOWN;;
        c)
           CRIT=`echo $OPTARG | grep -v "^-"`
           [ ! "$?" = 0 ] && echo "Error: missing or illegal option value" && exit $STATE_UNKNOWN;;
        w)
           WARN=`echo $OPTARG | grep -v "^-"`
           [ ! "$?" = 0 ] && echo "Error: missing or illegal option value" && exit $STATE_UNKNOWN;;
        C)
           CRITPCT=`echo $OPTARG | grep -v "^-"`
           [ ! "$?" = 0 ] && echo "Error: missing or illegal option value" && exit $STATE_UNKNOWN;;
        W)
           WARNPCT=`echo $OPTARG | grep -v "^-"`
           [ ! "$?" = 0 ] && echo "Error: missing or illegal option value" && exit $STATE_UNKNOWN;;
        p)
           PKTCNT=`echo $OPTARG | grep -v "^-"`
           [ ! "$?" = 0 ] && echo "Error: missing or illegal option value" && exit $STATE_UNKNOWN;;
        s)
           PKTSIZE=`echo $OPTARG | grep -v "^-"`
           [ ! "$?" = 0 ] && echo "Error: missing or illegal option value" && exit $STATE_UNKNOWN;;
        ?)
           usage; exit $STATE_UNKNOWN;;
     esac
done
 
if [ -z "$CHECKHOST" ]; then usage; exit $STATE_UNKNOWN; fi
 
cmd_res="$(ping $CHECKHOST -c $PKTCNT -s $PKTSIZE -W 1 -M dont|tail -n2)"
 
PCT=$(echo "$cmd_res"|head -n1|awk '{print $6}'|tr -d '%')
 
TIME=$(echo "$cmd_res"|tail -n1|awk -F '/' '{print $5}')
if [ -z "$TIME" ]; then TIME=65565; fi
 
if [ $PCT -ge $WARNPCT ] && [ $res -lt $E_WARN ]
 then
   res=$E_WARN;txt="WARNING"
   if [ $PCT -ge $CRITPCT ] && [ $res -lt $E_CRIT ]
    then
      res=$E_CRIT;txt="CRITICAL"
   fi
fi
 
if [ $(echo "$TIME >= $WARN"|bc) -ne 0  ] && [ $res -lt $E_WARN ]
 then
   res=$E_WARN;txt="WARNING"
   if [ $(echo "$TIME >= $CRIT"|bc) -ne 0  ] && [ $res -lt $E_CRIT ]
    then
      res=$E_CRIT;txt="CRITICAL"
   fi
fi
 
echo "$txt: Host $CHECKHOST - $PCT% packet loss (warn:$WARNPCT,crit:$CRITPCT), AVG rtt $TIME (warn:$WARN,crit:$CRIT)|PacketLoss=$PCT%;$WARNPCT;$CRITPCT;0;100 RTT=${TIME}ms;$WARN;$CRIT;;"
exit $res

#!/bin/bash
 
E_OK=0;E_WARNING=1;E_CRITICAL=2;E_UNKNOWN=3
 
usage()
{
cat <<EOF
Usage: $0 remotehost filename
This script checks differecies of local and remote files
EOF
}
 
if [[ -z "$1" |]]; then usage; exit $E_UNKNOWN
 else  serv="$1"
fi
 
if [[ -z "$2" |]]; then usage; exit $E_UNKNOWN
 else fname="$2"
fi
 
difs="$(diff $fname <(ssh "$serv" "cat $fname"))"
 
if [[ "$?" -eq "1" |]]
 then
  echo "CRITICAL: File $fname. Local and on host $serv has differencies"
  echo "$difs"
  exit $E_CRITICAL
fi
 
echo "OK: File $fname. Local and on host $serv has no differencies"
exit $E_OK

#!/bin/bash
 
STATE_OK=0;STATE_WARNING=1;STATE_CRITICAL=2;STATE_UNKNOWN=3
 
usage()
{
cat << EOF
Usage: $0 remotehost filename
This script checks differecies of local and remote files
EOF
}
 
if [[ -z "$1" ]]; then usage; exit $STATE_UNKNOWN; else serv="$1"; fi
if [[ -z "$2" ]]; then usage; exit $STATE_UNKNOWN; else fname="$2"; fi
 
difs=""
ndifs=0
 
for f in $fname
do
 dif="$(ssh "$serv" "cat $f"|diff - $f)"
 if [[ $? -ne 0 ]]; then.
   ndifs=$(($ndifs + 1 ))
   difs="$difs$(echo $f):$dif"
 fi
done
 
if [[ $ndifs -eq 0 ]]
 then
  echo "OK: File $fname. Local and on host $serv has no differencies"; exit $STATE_OK
 else
  echo "CRITICAL: File $fname. Local and on host $serv has differencies"; echo "$difs"; exit $STATE_CRITICAL
fi

#!/bin/bash
 
E_OK=0;E_WARN=1;E_CRIT=2;E_UNKNOWN=3 #Коды возврата Nagios
set -o pipefail
 
#Defaults
TYPE="A"
 
usage()
{
 cat <<EOF
 This script checks dns records corresponding to given list
 usage: $0 domain list [server]
      list - addresses list (separated by comma(,))
EOF
}
 
if [[ -n "$1" ]]; then DOMAIN="$1"; else usage; exit $E_UNKNOWN; fi
if [[ -n "$2" ]]; then LIST="$2"; else usage; exit $E_UNKNOWN; fi
if [[ -n "$3" ]]; then SERVER="$3"; fi
 
res=$E_OK; txt="OK"
 
dnsrecs="$(host -t $TYPE $DOMAIN $SERVER|grep "$DOMAIN has address "|grep -oE '[^ ]+$'|sort|tr '\n' ','|sed s/,$//)"
 
if [[ $? -ne 0 ]]; then echo "DNS lookup error for command: host -t $TYPE $DOMAIN $SERVER";exit $E_UNKNOWN; fi
 
if [[ "$dnsrecs" != "$LIST" ]]
 then res=$E_CRIT; txt="CRIT"; check_txt=" not equal to '$LIST'"
fi
 
echo "$txt:Records $TYPE for $DOMAIN: '$dnsrecs'$check_txt"
exit $res

#!/bin/bash
 
E_OK=0;E_WARN=1;E_CRIT=2;E_UNKNOWN=3
 
if [[ -z "$1" ]]; then echo "Usage: $(basename $0) PostgresMasterHostname"; exit $E_UNKNOWN; fi
mastername="$1"
 
HOST="localhost"
#HOST="/var/run/postgresql"
 
res=$E_OK; res_txt="OK"; res_txt2="Host $mastername is Master"
 
strings="$(echo "node_id hname status role last_status_change")"
while IFS='|' read -r node_id hname port status lb_weight role select_cnt load_balance_node replication_delay replication_state replication_sync_state last_status_change
do
 strings="$strings\n$(echo "$node_id $hname $status $role $last_status_change")"
 if [[ "$hname" == "$mastername" && "$role" != "primary" ]]
  then
   res=$E_CRIT; res_txt="CRIT"; res_txt2="Host $hname is not Master"
 fi
 if [[ "$hname" != "$mastername" && "$role" == "primary" ]]
  then
   if [[ $res -lt $E_WARN ]]; then res=$E_WARN; res_txt="CRIT"; res_txt2="Host $hname is Master (myst be a slave)"; fi
 fi
done < <(psql -tA -h localhost -c "SHOW pool_nodes;" postgres postgres)
 
echo "$res_txt: $res_txt2"
echo -e "$strings"
exit $res

#!/bin/bash
 
E_OK=0;E_WARN=1;E_CRIT=2;E_UNKNOWN=3
 
#HOST="localhost"
HOST="/var/run/postgresql"
 
while IFS='|' read -r node_id hname port status lb_weight role select_cnt load_balance_node replication_delay replication_state replication_sync_state last_status_change
do
if [[ "$role" == "primary" ]]; then master=$hname; break; fi
done < <(psql -tA -h localhost -c "SHOW pool_nodes;" postgres postgres)
 
res=$E_OK; res_txt="OK"; res_txt2=""
 
IFS='|' read -r client_addr state sent_lsn write_lsn flush_lsn replay_lsn \
 <<< $(echo $(psql -tA -h $master -c 'select client_addr, state, sent_lsn, write_lsn,flush_lsn, replay_lsn from pg_stat_replication;' postgres postgres))
 
lsn_equal=1
for i in "$write_lsn" "$flush_lsn" "$replay_lsn"
do
 if [[ "$sent_lsn" != "$i" ]]; then lsn_equal=0;break; fi
done
if [[ $lsn_equal -ne 1 ]]; then res=$E_WARN; res_txt="WARN"; res_txt2="LSNs is not equal"; fi
 
 
if [[ "$state" != "streaming" ]]; then res=$E_CRIT; res_txt="CRIT"; res_txt2="state != streaming"; fi
 
echo -n "$res_txt: Master is $master. $res_txt2 "
echo "client_addr:$client_addr state:$state sent_lsn:$sent_lsn write_lsn:$write_lsn flush_lsn:$flush_lsn replay_lsn:$replay_lsn|result=$res"
exit $res