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Commit a9f071d1 authored by Hahn Axel (hahn)'s avatar Hahn Axel (hahn)
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first public version for postgresql check

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check_psqlserver
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#!/bin/bash
# ======================================================================
#
# !!! WORK IN PROGRESS !!! DO NOT USE YET !!!
#
# Check PSQL SERVER
#
# requirements:
......@@ -10,29 +8,27 @@
#
# installation:
# - execute check_psqlserver -i
#
#
# ----------------------------------------------------------------------
# Postgresql docs:
# https://www.postgresql.org/docs/current/monitoring-stats.html
# ----------------------------------------------------------------------
# 2023-06-xx v0.0 <axel.hahn@unibe.ch>
# 2023-06-07 v0.2 <axel.hahn@unibe.ch>
# ======================================================================
. $(dirname $0)/inc_pluginfunctions
self_APPNAME=$( basename $0 | tr [:lower:] [:upper:] )
self_APPVERSION=0.1
# --- set HOME
HOME=/etc/icinga2-passive-client
# HOME=/etc/icingaclient
self_APPVERSION=0.2
# --- other vars...
cfgfile=$HOME/.psql.conf
cfgfile=/etc/icingaclient/.psql.conf
myuser=icingamonitor
# new line
NL="
"
lastvalue=
out=" "
# ----------------------------------------------------------------------
......@@ -46,6 +42,7 @@ function _uninstall(){
unset PGHOST
unset PGUSER
unset PGPASSWORD
unset PGDATABASE
}
# (re)install database user for monitoring
......@@ -85,6 +82,8 @@ function _install(){
export PGUSER=${myuser}
export PGPASSWORD=${mypw}
export PGHOST=localhost
# set default database because a user db won't be created
export PGDATABASE=postgres
EOF
ls -l $cfgfile
......@@ -94,6 +93,7 @@ EOF
fi
}
# show help
function _usage(){
local _self=$( basename $0 )
cat <<EOH
......@@ -101,8 +101,6 @@ ______________________________________________________________________
${self_APPNAME} :: v${self_APPVERSION}
THIS IS AN PRE ALPHA VERSION - DO NOT USE THIS
(c) Institute for Medical Education - Univerity of Bern
Licence: GNU GPL 3
______________________________________________________________________
......@@ -117,7 +115,13 @@ OPTIONS:
PARAMETERS:
-m method; valid methods are:
dbstat first implmenetation test
activity running processes and queries
dbrows Count of database row actions
conflicts Detected conflicts from pg_stat_database_conflicts
diskblock Count of diskblocks physically read or coming from cache
problems Problems and troublemakers
replication Replication status (table output only)
transactions Count of transactions over all databases
EXAMPLES:
$_self -i
......@@ -126,30 +130,31 @@ EXAMPLES:
EOH
}
function renderCounts(){
local _query="$1"
local _out=$( psql -c "${_query}")
# out+=$( echo "DEBUG: _query=${_query}${NL}" )
# echo "DEBUG: _out="; echo "${_out}"
local _iCounter=0
typeset -i _iCounter
local _header
_header=$( echo "${_out}" | head -1 | tr -d ' ')
local _data
_data=$( echo "${_out}" | head -3 | tail -1 | tr -d ' ')
# echo "DEBUG: _header=${_header}"
# render incremental counters from integer results of a given sql query
# global string out output of check
# param string database query
function renderCounters(){
local _query; _query="$1"
local _out; _out=$( psql -c "${_query}")
local _iCounter; typeset -i _iCounter=0
local _header; _header=$( echo "${_out}" | head -1 | tr -d ' ')
local _data; _data=$( echo "${_out}" | head -3 | tail -1 | tr -d ' ')
local _sDeltaUnit; _sDeltaUnit=sec
local _iSpeed; typeset -i _iSpeed=0
local _sStoreid; _sStoreid=$( md5sum <<< "${_query}" | awk '{ print $1 }' )
local _iValue; typeset -i _iValue
# read psql result and put columns and values to an array
IFS="|"
read -ra aCols <<< "$_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}" "${value}"
_iValue=${aVals[$_iCounter]}
_iSpeed=$( ph.perfdeltaspeed "psql-${sColumn}-${_sStoreid}" ${_iValue} sec $_sDeltaUnit)
out=$out$(printf "%25s: %10s %s \n" "${sColumn}" "${_iValue}" "... delta = ${_iSpeed} per $_sDeltaUnit${NL}")
ph.perfadd "${sColumn}" "${_iSpeed}"
_iCounter+=1
done
}
......@@ -175,8 +180,6 @@ if [ $bOptInstall -eq 1 -a "$( whoami )" = "root" ]; then
ph.status "SKIP installation. config file already exists: $cfgfile."
ph.exit
fi
HOME=/root
export HOME
_uninstall
_install
......@@ -187,7 +190,6 @@ fi
# --- uninstall
if [ $bOptUninstall -eq 1 -a "$( whoami )" = "root" ]; then
HOME=/root
_uninstall
rm -f $cfgfile
......@@ -208,21 +210,71 @@ fi
sMode=$(ph.getValueWithParam '' m "$@")
case "${sMode}" in
"dbstat")
descr="statistics over all databases"
renderCounts "select \
sum(xact_commit) as commit, \
sum(xact_rollback) as rollback, \
sum(blks_read) as blkread, \
sum(blks_hit) as blkhit \
"activity")
_out=$( psql -c "select pid,usename,state,query,backend_type,backend_start from pg_stat_activity" )
typeset -i iQTotal; iQTotal=$( tail -1 <<< "$_out" | cut -f 1 -d ' ' | tr -d '(' )
typeset -i iQActive; iQActive=$( awk '{ print $5 }' <<< "$_out" | grep -c "active" )
descr="Running total: $iQTotal ... active: $iQActive"
out="${_out}${NL}"
ph.perfadd "running-total" "${iQTotal}"
ph.perfadd "running-active" "${iQActive}"
;;
"conflicts")
descr="Detected conflicts (from pg_stat_database_conflicts)"
renderCounters "select \
sum(confl_tablespace) as confltablespace, \
sum(confl_lock) as confllock, \
sum(confl_snapshot) as conflsnapshot, \
sum(confl_bufferpin) as conflbufferpin, \
sum(confl_deadlock) as confldeadlock \
from pg_stat_database_conflicts "
;;
"dbrows")
descr="Count of database row actions (from pg_stat_database)"
renderCounters "select \
sum(tup_returned) as return, \
sum(tup_fetched) as fetch, \
sum(tup_inserted) as insert, \
sum(tup_updated) as update, \
sum(tup_deleted) as delete \
from pg_stat_database "
;;
"diskblock")
descr="Count of diskblocks physically read or coming from cache (from pg_stat_database)"
renderCounters "select \
sum(blks_read) as read, \
sum(blks_hit) as cached \
from pg_stat_database "
;;
"queries")
# psql -c "select * from pg_stat_activity "
# psql -c "select * from pg_stat_statements " -> av psql v11
"problems")
descr="Problems and troublemakers (from pg_stat_database)"
renderCounters "select \
sum(conflicts) as conflicts, \
sum(deadlocks) as deadlocks, \
sum(checksum_failures) as checksumfailures, \
sum(temp_files) as tmpfiles, \
sum(temp_bytes) as tmpbytes \
from pg_stat_database "
;;
"replication")
_out=$( psql -c "select * from pg_stat_replication" )
if tail -1 <<< "$_out" | grep "(0 rows)" >/dev/null ; then
descr="No data in pg_stat_replication - this is no slave."
out=""
else
descr="status (from pg_stat_replication)"
out="${_out}${NL}"
fi
;;
"transactions")
descr="Count of transactions over all databases (from pg_stat_database)"
renderCounters "select \
sum(xact_commit) as commit, \
sum(xact_rollback) as rollback \
from pg_stat_database "
;;
*)
echo ERRROR: [${sMode}] is an INVALID mode
_usage
......
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