Skip to content
Snippets Groups Projects
Commit a07c2727 authored by Hahn Axel (hahn)'s avatar Hahn Axel (hahn)
Browse files

WIP add fisrt lines for psql check

parent 96c67987
No related branches found
No related tags found
1 merge request!856010 check pqsql
#!/bin/bash
# ======================================================================
#
# !!! WORK IN PROGRESS !!! DO NOT USE YET !!!
#
# Check PSQL SERVER
#
# requirements:
# - psql client
#
# installation:
# - execute check_psqlserver -i
#
# ----------------------------------------------------------------------
# 2023-06-xx v0.0 <axel.hahn@unibe.ch>
# ======================================================================
. `dirname $0`/inc_pluginfunctions
_version="0.1"
# --- set HOME
HOME=/etc/icinga2-passive-client
# HOME=/etc/icingaclient
# --- other vars...
cfgfile=$HOME/.psql.conf
myuser=icingamonitor
datafile=/tmp/psqlvars.out
# new line
NL="
"
lastvalue=
out=" "
# ----------------------------------------------------------------------
# FUNCTIONS
# ----------------------------------------------------------------------
# uninstall database user
function _uninstall(){
echo UNINSTALL ...
su - postgres -c "psql -c \"DROP USER ${myuser};\""
unset PGHOST
unset PGUSER
unset PGPASSWORD
}
# (re)install database user for monitoring
function _install(){
echo INSTALLING ...
local pwlength=64
echo "- check psql connection..."
su postgres -c "psql -V postgres"
if [ $? -ne 0 ]; then
echo "ERROR: psql connect without password failed."
exit 1
fi
echo "- creating mysql user $myuser@localhost with random password ($pwlength chars)..."
mypw=$( head /dev/urandom | tr -dc A-Za-z0-9 | head -c $pwlength )
SQL1="CREATE USER ${myuser} WITH PASSWORD '${mypw}' CONNECTION LIMIT 5";
SQL2="GRANT pg_monitor TO ${myuser};"
# SQL2="GRANT MONITOR_QUERIES TO ${myuser};"
su - postgres -c "psql -c \"${SQL1}\""
if [ $? -ne 0 ]; then
echo "ERROR: psql command to create user failed."
exit 1
fi
echo "- grant ..."
su - postgres -c "psql -c \"${SQL2}\""
if [ $? -ne 0 ]; then
echo "ERROR: psql command to grant permissions failed."
# exit 1
fi
echo "- creating config file $cfgfile ... "
cat >$cfgfile <<EOF
#
# generated on `date`
#
export PGUSER=${myuser}
export PGPASSWORD=${mypw}
export PGHOST=localhost
export PGDATABASE=postgres
EOF
ls -l $cfgfile
if [ $? -ne 0 ]; then
echo "ERROR: creation of config file failed."
exit 1
fi
}
function _usage(){
cat <<EOH
______________________________________________________________________
CHECK POSTGRESQL SERVER :: v${_version}
(c) Institute for Medical Education - Univerity of Bern
Licence: GNU GPL 3
______________________________________________________________________
USAGE:
`basename $0` [OPTIONS] -m METHOD
OPTIONS:
-h this help
-i install monitoring user (must be executed as root)
-u uninstall monitoring user (must be executed as root)
PARAMETERS:
-m method; valid methods are:
connections current/ max connections
connects connects per min and aborted connections/ clients
commands current running statements insert, select, ...
qcache-blocks query cache blocks total vs free
qcache-queries cached / non cached queries; low memeory prunes
qcache-hits query cache efficiency: cached vs non cached and inserted
EXAMPLES:
`basename $0` -i
`basename $0` -m commands
EOH
}
function _mysqlreadvars(){
mysql -e "SHOW GLOBAL VARIABLES ;" --skip-column-names >$datafile
mysql -e "SHOW STATUS ;" --skip-column-names >>$datafile
}
function _mysqlgetvar() {
local sVarname=$1
lastvalue=`grep "^$sVarname[^_a-z]" ${datafile} | awk '{ print $2 }'`
echo $lastvalue
}
# get a value from mysql status output
# param string variable name
# param string prefix to remove from beginning of variable
# param (set) flag if it is a delta value
function _mysqlrendervar() {
local sVarname=$1
local sRemove=$2
local sDeltaUnit=$3
local sFloat=$4
# local iValue=`grep "^$sVarname[^_a-z]" ${datafile} | awk '{ print $2 }'`
local iValue=`_mysqlgetvar "$sVarname"`
if [ "$iValue" = "" ]; then
ph.abort "no value for ${sVarname}"
fi
# get label for perfdata
local sLabel=`echo ${sVarname} | sed "s#^${sRemove}##g"`
if [ ! -z $sDeltaUnit ]; then
local iSpeed=` ph.perfdeltaspeed "mysql-${sVarname}" ${iValue} $sDeltaUnit $sFloat`
out=$out`printf "%25s: %10s %s \n" "${sLabel}" "${iValue}" "... delta = ${iSpeed} per $sDeltaUnit${NL}"`
ph.perfadd "${sLabel}" "${iSpeed}"
lastvalue=$iSpeed
else
out=${out}`printf "%25s: %10s \n" "${sLabel}" "${iValue}${NL}"`
ph.perfadd "${sLabel}" "${iValue}"
lastvalue=$iValue
fi
}
function _mysqlrenderdelta() {
local deltaUnit=$3
test -z $deltaUnit && deltaUnit="sec"
_mysqlrendervar "$1" "$2" $deltaUnit $4
}
function renderCounts(){
local _query="$1"
local _out=$( psql -c "${_query}")
# out+=$( echo "DEBUG: _query=${_query}${NL}" )
# echo "DEBUG: _out="; echo "${_out}"
typeset -i local _iCounter=0
local _header=$( echo "${_out}" | head -1 | tr -d ' ')
local _data=$( echo "${_out}" | head -3 | tail -1 | tr -d ' ')
# echo "DEBUG: _header=${_header}"
IFS="|"
read -ra aCols <<< "$_header"
read -ra aVals <<< "$_data"
for sColumn in ${aCols[*]}
do
local value=${aVals[$_iCounter]}
# echo "DEBUG: $sColumn = $value"
out+=$( printf "%25s: %10s \n" "${sColumn}" "${value}${NL}")
ph.perfadd "${sColumn}" "${value}"
_iCounter+=1
done
}
# ----------------------------------------------------------------------
# MAIN
# ----------------------------------------------------------------------
bOptInstall=` ph.hasParamoption "i" "$@"`
bOptUninstall=` ph.hasParamoption "u" "$@"`
bOptHelp=` ph.hasParamoption "h" "$@"`
if [ $bOptHelp -eq 1 -o $# -lt 1 ]; then
_usage
exit 0
fi
# --- check required tools
# ph.require mysql
# --- install
if [ $bOptInstall -eq 1 -a "$( whoami )" = "root" ]; then
if [ -f $cfgfile ]; then
ph.status "SKIP installation. config file already exists: $cfgfile."
ph.exit
fi
HOME=/root
export HOME
_uninstall
_install
ph.status "Installation was done"
ph.exit
fi
# --- uninstall
if [ $bOptUninstall -eq 1 -a "$( whoami )" = "root" ]; then
HOME=/root
_uninstall
rm -f $cfgfile
ph.status "Uninstalled."
ph.exit
fi
# --- check installation
grep $myuser $cfgfile >/dev/null 2>/dev/null
if [ $? -ne 0 ]; then
ph.abort "PSQL access not possible yet. You need to install the monitoring user first: as root execute `basename $0` -i"
fi
# ----------------------------------------------------------------------
sMode=`ph.getValueWithParam '' m "$@"`
case "${sMode}" in
"dbstat")
descr="stat database"
renderCounts "select \
sum(xact_commit) as commit, \
sum(xact_rollback) as rollback, \
sum(blks_read) as blkread, \
sum(blks_hit) as blkhit \
from pg_stat_database "
;;
"queries")
# psql -c "select * from pg_stat_activity "
# psql -c "select * from pg_stat_statements " -> av psql v11
;;
"connections")
descr="current/ max connections"
_mysqlrendervar max_connections
typeset -i iMaxConn=$lastvalue
_mysqlrendervar Max_used_connections
typeset -i iMaxUsed=$lastvalue
typeset -i iMaxPercent=$iMaxUsed*100/$iMaxConn
out=$out" --> $iMaxPercent % ${NL}${NL}"
_mysqlrendervar Threads_connected
typeset -i iThreads=$lastvalue
typeset -i iUsage=$iThreads*100/$iMaxConn
out=$out" --> $iUsage % ${NL}${NL}"
if [ $iWarnLimit -gt 0 -a $iCriticalLimit -gt 0 ]; then
ph.setStatusByLimit $iUsage $iWarnLimit $iCriticalLimit
fi
_mysqlrendervar Questions
;;
"connects")
descr="connects per min and aborted connections/ clients"
_mysqlrenderdelta Connections "" min float
_mysqlrenderdelta Aborted_clients "" min float
_mysqlrenderdelta Aborted_connects "" min float
;;
"commands")
descr="currently executed commands"
_mysqlrendervar Com_delete "Com_"
_mysqlrendervar Com_insert "Com_"
_mysqlrendervar Com_replace "Com_"
_mysqlrendervar Com_select "Com_"
_mysqlrendervar Com_update "Com_"
;;
"qcache-blocks")
descr="query cache blocks"
_mysqlgetvar "have_query_cache" | grep "YES" >/dev/null || ph.abort "Query cache is not active"
_mysqlrendervar Qcache_total_blocks "Qcache_"
_mysqlrendervar Qcache_free_blocks "Qcache_"
;;
"qcache-queries")
descr="query cache data"
_mysqlgetvar "have_query_cache" | grep "YES" >/dev/null || ph.abort "Query cache is not active"
_mysqlrendervar Qcache_queries_in_cache "Qcache_"
_mysqlrenderdelta Qcache_not_cached "Qcache_" min float
_mysqlrenderdelta Qcache_lowmem_prunes "Qcache_" min float
;;
"qcache-hits")
descr="query cache hits"
_mysqlgetvar "have_query_cache" | grep "YES" >/dev/null || ph.abort "Query cache is not active"
_mysqlrenderdelta Qcache_hits "Qcache_" min
_mysqlrenderdelta Qcache_inserts "Qcache_" min
_mysqlrenderdelta Qcache_not_cached "Qcache_" min
;;
*)
echo ERRROR: [${sMode}] is an INVALID mode
_usage
ph.abort
esac
ph.status "Pgsql $sMode :: $descr"
echo "$out"
rm -f $datafile
ph.exit
# ----------------------------------------------------------------------
0% Loading or .
You are about to add 0 people to the discussion. Proceed with caution.
Please register or to comment