Replace freshness and kernel_version checks
Use an updated plugin from BLSE that uses needrestart instead of manual parsing of these elements.
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@ -1,52 +1,103 @@
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#!/bin/bash
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#!/usr/bin/env python
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# Open file handle freshness check for Check_MK
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# Installed by PVC ansible
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# Check for freshness of various components using needrestart
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OK=0
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WARNING=1
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import subprocess
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import re
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import json
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FRESHNESS="$( lsof -Fcftn / 2>/dev/null | grep -v '/tmp' | \
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awk '
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{
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field=substr($0,1,1);
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data=substr($0,2);
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if (field=="f") {
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file_descriptor=data;
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} else if (field=="t") {
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file_type=data;
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} else if (field=="c") {
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command_name=data;
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} else if (field=="n" && file_descriptor=="DEL" && file_type=="REG") {
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name=data;
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file[command_name]++;
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}
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}
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END {
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for (name in file) {
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error++;
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# Skip these problematic programs
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if (name=="systemd-udevd") { continue; }
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if (name=="pulseaudio") { continue; }
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if (name=="light-locker") { continue; }
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if (name=="at-spi-bus-laun") { continue; }
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if (name=="node") { continue; }
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if (error_name) { error_name=error_name " " };
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error_name=error_name name;
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}
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if (error_name) {
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print error_name;
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exit error;
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} else {
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exit;
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}
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}' )";
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try:
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nrout = subprocess.run(["/usr/sbin/needrestart", "-b"], timeout=5, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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except subprocess.TimeoutExpired:
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exit(2)
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except Exception:
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exit(1)
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echo "<<<freshness>>>"
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if [ "$FRESHNESS" ]; then
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echo "Applications needing restart: $FRESHNESS"
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exit $WARNING
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else
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echo "No applications needing restart"
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exit $OK
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fi
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stdout = nrout.stdout.decode("ascii").split('\n')
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stderr = nrout.stdout.decode("ascii").split('\n')
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# Output data structure after parsing needrestart output
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data = {
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'kernel': {
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'current': None,
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'pending': None,
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'state': 0,
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},
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'microcode': {
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'current': None,
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'pending': None,
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'state': 0,
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},
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'services': {
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'count': 0,
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'list': list(),
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},
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'containers': {
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'count': 0,
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'list': list(),
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},
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'sessions': {
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'count': 0,
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'list': list(),
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},
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}
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# NEEDRESTART-VER: 3.4
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# NEEDRESTART-KCUR: 4.19.0-6-amd64
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# NEEDRESTART-KEXP: 4.19.0-20-amd64
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# NEEDRESTART-KSTA: 3
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# NEEDRESTART-UCSTA: 2
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# NEEDRESTART-UCCUR: 0xb000038
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# NEEDRESTART-UCEXP: 0xb000040
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# NEEDRESTART-SVC: acpid
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# NEEDRESTART-SVC: cron
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# NEEDRESTART-SVC: irqbalance
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# NEEDRESTART-SVC: mcelog
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# NEEDRESTART-SVC: munin-node
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# NEEDRESTART-SVC: ntp
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# NEEDRESTART-SVC: ssh
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# NEEDRESTART-SVC: syslog-ng
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# NEEDRESTART-SVC: trousers
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# NEEDRESTART-SVC: watchdog
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# NEEDRESTART-SVC: wd_keepalive
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# NEEDRESTART-CONT: LXC web1
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# NEEDRESTART-SESS: metabase @ user manager service
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# NEEDRESTART-SESS: root @ session #28017
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# STA:
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# 0: unknown or failed to detect
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# 1: no pending upgrade
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# 2: ABI compatible upgrade pending
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# 3: version upgrade pending
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for line in stdout:
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# Kernel version
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if re.match(r'^NEEDRESTART-KSTA', line):
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data['kernel']['state'] = int(line.split(': ')[-1])
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elif re.match(r'^NEEDRESTART-KCUR', line):
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data['kernel']['current'] = line.split(': ')[-1]
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elif re.match(r'^NEEDRESTART-KEXP', line):
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data['kernel']['pending'] = line.split(': ')[-1]
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# Microcode version
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elif re.match(r'^NEEDRESTART-UCSTA', line):
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data['microcode']['state'] = int(line.split(': ')[-1])
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elif re.match(r'^NEEDRESTART-UCCUR', line):
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data['microcode']['current'] = line.split(': ')[-1]
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elif re.match(r'^NEEDRESTART-UCEXP', line):
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data['microcode']['pending'] = line.split(': ')[-1]
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# Services needing restart
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elif re.match(r'^NEEDRESTART-SVC', line):
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data['services']['count'] += 1
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data['services']['list'].append(' '.join(line.split(': ')[1:]))
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# Containers needing restart
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elif re.match(f'^NEEDRESTART-CONT', line):
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data['containers']['count'] += 1
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data['containers']['list'].append(' '.join(line.split(': ')[1:]))
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# Sessions needing restart
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elif re.match(f'^NEEDRESTART-SESS', line):
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data['sessions']['count'] += 1
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data['sessions']['list'].append(' '.join(line.split(': ')[1:]))
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print("<<<freshness>>>")
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print(json.dumps(data))
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exit(0)
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@ -1,14 +0,0 @@
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#!/bin/bash
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OK=0
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WARNING=1
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echo "<<<kernelversion>>>"
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ACTIVE="$( uname -v | awk '{ print $4" "$5 }' )"
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ONDISK="$( strings /vmlinuz | grep 'Debian' | head -1 | awk '{ print $6" "$7 }' )"
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echo ${ACTIVE}
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echo ${ONDISK}
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if [[ ${ACTIVE} != ${ONDISK} ]]; then
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exit $WARNING
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else
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exit $OK
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fi
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@ -619,7 +619,6 @@
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- entropy
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- freshness
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- ipmi
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- kernelversion
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- ownership
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tags: base-cmkagent
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