210 lines
6.9 KiB
Bash
210 lines
6.9 KiB
Bash
#!/usr/bin/env ksh
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#******************************************************************************
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# @(#) check_hpux_syslog.sh
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#******************************************************************************
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# @(#) Copyright (C) 2016 by KUDOS BVBA (info@kudos.be). All rights reserved.
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#
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# This program is a free software; you can redistribute it and/or modify
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# it under the same terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
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#******************************************************************************
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#
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# DOCUMENTATION (MAIN)
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# -----------------------------------------------------------------------------
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# @(#) MAIN: check_hpux_syslog
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# DOES: see _show_usage()
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# EXPECTS: see _show_usage()
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# REQUIRES: data_comma2space(), init_hc(), log_hc(), warn()
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#
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# @(#) HISTORY:
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# @(#) 2016-06-20: initial version [Patrick Van der Veken]
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# @(#) 2017-05-18: do not update the state file with --no-log [Patrick Van der Veken]
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# @(#) 2018-10-28: fixed (linter) errors [Patrick Van der Veken]
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# @(#) 2018-11-18: do not trap on signal 0 [Patrick Van der Veken]
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# @(#) 2019-01-24: arguments fix [Patrick Van der Veken]
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# @(#) 2019-03-09: added support for --log-healthy [Patrick Van der Veken]
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# -----------------------------------------------------------------------------
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# DO NOT CHANGE THIS FILE UNLESS YOU KNOW WHAT YOU ARE DOING!
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#******************************************************************************
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# -----------------------------------------------------------------------------
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function check_hpux_syslog
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{
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# ------------------------- CONFIGURATION starts here -------------------------
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typeset _CONFIG_FILE="${CONFIG_DIR}/$0.conf"
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typeset _STATE_FILE="${STATE_PERM_DIR}/discovered.syslog"
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typeset _VERSION="2019-03-09" # YYYY-MM-DD
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typeset _SUPPORTED_PLATFORMS="HP-UX" # uname -s match
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# ------------------------- CONFIGURATION ends here ---------------------------
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# set defaults
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(( ARG_DEBUG > 0 && ARG_DEBUG_LEVEL > 0 )) && set ${DEBUG_OPTS}
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init_hc "$0" "${_SUPPORTED_PLATFORMS}" "${_VERSION}"
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typeset _ARGS=$(data_comma2space "$*")
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typeset _ARG=""
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typeset _MSG=""
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typeset _STC=0
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typeset _STC_COUNT=0
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typeset _CFG_HEALTHY=""
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typeset _LOG_HEALTHY=0
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typeset _TMP_FILE="${TMP_DIR}/.$0.tmp.$$"
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typeset _CLASSES_LINE=""
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typeset _SYSLOG_FILE=""
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typeset _SYSLOG_CLASSES=""
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# handle arguments (originally comma-separated)
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for _ARG in ${_ARGS}
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do
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case "${_ARG}" in
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help)
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_show_usage $0 ${_VERSION} ${_CONFIG_FILE} && return 0
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;;
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esac
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done
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# set local trap for cleanup
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# shellcheck disable=SC2064
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trap "[[ -f ${_TMP_FILE} ]] && rm -f ${_TMP_FILE} >/dev/null 2>&1; return 1" 1 2 3 15
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# handle configuration file
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[[ -n "${ARG_CONFIG_FILE}" ]] && _CONFIG_FILE="${ARG_CONFIG_FILE}"
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if [[ ! -r ${_CONFIG_FILE} ]]
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then
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warn "unable to read configuration file at ${_CONFIG_FILE}"
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return 1
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fi
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# read required configuration values
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_SYSLOG_FILE=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'syslog_file')
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if [[ -z "${_SYSLOG_FILE}" ]]
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then
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# default
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_SYSLOG_FILE="/var/adm/syslog/syslog.log"
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fi
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_CLASSES_LINE=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'syslog_classes')
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if [[ -z "${_CLASSES_LINE}" ]]
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then
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# default (mind the complex regex!, support facility[PID])
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_SYSLOG_CLASSES="vmunix(\[[0-9]+\])?:"
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else
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# convert comma's (mind the complex regex!, support facility[PID])
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_SYSLOG_CLASSES=$(print "${_CLASSES_LINE}" | sed 's/,/(\\[[0-9]+\\])\?:\|/g')
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# add PID qualifier to last item
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_SYSLOG_CLASSES="${_SYSLOG_CLASSES}(\[[0-9]+\])?:"
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fi
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_CFG_HEALTHY=$(_CONFIG_FILE="${_CONFIG_FILE}" data_get_lvalue_from_config 'log_healthy')
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case "${_CFG_HEALTHY}" in
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yes|YES|Yes)
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_LOG_HEALTHY=1
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;;
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*)
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# do not override hc_arg
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(( _LOG_HEALTHY > 0 )) || _LOG_HEALTHY=0
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;;
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esac
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# log_healthy
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(( ARG_LOG_HEALTHY > 0 )) && _LOG_HEALTHY=1
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if (( _LOG_HEALTHY > 0 ))
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then
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if (( ARG_LOG > 0 ))
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then
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log "logging/showing passed health checks"
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else
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log "showing passed health checks (but not logging)"
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fi
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else
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log "not logging/showing passed health checks"
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fi
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# check SYSLOG file
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[[ -r ${_SYSLOG_FILE} ]] || _MSG="SYSLOG file ${_SYSLOG_FILE} cannot be found"
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if [[ -n "${_MSG}" ]]
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then
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# handle results
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log_hc "$0" 1 "${_MSG}"
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return 0
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fi
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# check state file
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[[ -r ${_STATE_FILE} ]] || {
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print "## this file is not date sorted! Do not edit manually!" >${_STATE_FILE}
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(( $? > 0 )) && {
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warn "failed to create new state file at ${_STATE_FILE}"
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return 1
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}
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log "created new state file at ${_STATE_FILE}"
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}
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# filter current SYSLOG messages (must be uniquely sorted for 'comm')
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log "searching SYSLOG with filter: ${_SYSLOG_CLASSES}"
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grep -E -e "${_SYSLOG_CLASSES}" ${_SYSLOG_FILE} | sort -u >${_TMP_FILE} 2>/dev/null
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# compare results to already discovered messages
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comm -13 ${_STATE_FILE} ${_TMP_FILE} 2>/dev/null | sed 's/^ //g' >${HC_STDOUT_LOG}
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# report results
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_STC_COUNT=$(wc -l ${HC_STDOUT_LOG} 2>/dev/null | cut -f1 -d' ')
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if (( _STC_COUNT > 0 ))
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then
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_MSG="found ${_STC_COUNT} new SYSLOG messages"
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_STC=1
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# add results to state file (must be sorted; re-use TMP_FILE)
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sort -u ${HC_STDOUT_LOG} ${_STATE_FILE} >${_TMP_FILE}
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(( $? > 0 )) && {
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warn "failed to sort temporary state file"
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return 1
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}
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if (( ARG_LOG > 0 ))
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then
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mv ${_TMP_FILE} ${_STATE_FILE} >/dev/null 2>&1
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(( $? > 0 )) && {
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warn "failed to move temporary state file to permanent state file ${_STATE_FILE}"
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return 1
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}
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fi
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else
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_MSG="no new SYSLOG messages found"
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fi
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# report results
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if (( _LOG_HEALTHY > 0 || _STC > 0 ))
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then
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log_hc "$0" ${_STC} "${_MSG}"
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fi
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# do cleanup
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[[ -f ${_TMP_FILE} ]] && rm -f ${_TMP_FILE} >/dev/null 2>&1
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return 0
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}
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# -----------------------------------------------------------------------------
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function _show_usage
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{
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cat <<- EOT
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NAME : $1
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VERSION : $2
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CONFIG : $3 with parameters:
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log_healthy=<yes|no>
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syslog_file=<path_to_syslog_file>
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syslog_classes=<list_of_facility_classes_to_search_for>
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PURPOSE : Provides a KISS syslog monitor (keep tracks of already discovered messages in
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a state file and compares new lines in SYSLOG to the ones kept in the
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state file. The plugin will sort both state & SYSLOG data before doing
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the comparison.
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LOG HEALTHY : Supported
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EOT
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return 0
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}
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#******************************************************************************
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# END of script
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#******************************************************************************
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