Internal support hints: Difference between revisions

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[[Category:Administration]]
{{DISPLAYTITLE:Internal Support Hints}}


==Important note: ==
{{Warning|1=This documentation is for the internal support team. Use at your own risk and test on non-production servers first.}}
Following articles are designed to be used by internal support team. You can find hints usauseful but please use it at your own risk (use on testing servers first)


= Testing configure options =
= Quick Reference =
If you need to test configure options without need to modify the config file or database settings, you can use json_config option:
--json_config='[{"id_sensor":"11"},{"interface":"lo"},{"natalias","8.8.8.8 10.10.100.50;9.9.9.9 192.168.88.33"}]'
(The otpions defined using '''json_config''' command line option will overrides the configfile and database settings)


== Examples ==
<kroki lang="mermaid">
This will override options '''rtpip_find_endpoints,rrd,natalias''' no matter what is set in config file.
%%{init: {'flowchart': {'nodeSpacing': 10, 'rankSpacing': 25}}}%%
./voipmonitor --config-file=config/voipmonitor.conf -p XobmuJ -b voipmonitor_ipv6 -k -v1,pcap_stat_period=5,hash_rtp,rtp_streams -rpba:/totest/test.pcap --json_config='[{"rtpip_find_endpoints","yes"},{"rrd","no"},{"natalias","8.8.8.8 10.10.100.50;9.9.9.9 192.168.88.33"}]'
flowchart LR
    subgraph Test["Testing"]
        A[json_config] --> B[Regexp/Country]
        B --> C[Billing]
    end
    subgraph Debug["Debugging"]
        D[Jemalloc] --> E[Threads]
        E --> F[Charts crash]
    end
    subgraph Tools["Tools"]
        G[PCAP replay] --> H[Manager API]
        H --> I[Scripts]
    end
</kroki>


= Testing regexp / country rules / billing =
= Testing Configuration =
== Regexp test ==
/usr/local/sbin/voipmonitor --config-file=/etc/voipmonitor-test.conf -k -v1 --test-regexp '^800880080[1-9][0-9][*]|80088008012345|'


== Country assignment test ==
== Override Settings with json_config ==
/usr/local/sbin/voipmonitor --config-file=/etc/voipmonitor-test.conf -k -v1 --find-country-for-ip=102.140.68.113
/usr/local/sbin/voipmonitor --config-file=/etc/voipmonitor-test.conf -k -v1 --find-country-for-number 0034*12345


* gui version (obsolete)
Override config file and database settings without editing files:


root@vmweb:GUI_ROOT# php php/run.php testFindCountryForNumber -n 4909699999
<syntaxhighlight lang="bash">
number:           4909699999
voipmonitor --config-file=/etc/voipmonitor.conf -k -v1 \
country:         DE
  --json_config='[{"id_sensor":"11"},{"interface":"lo"},{"natalias":"8.8.8.8 10.10.100.50"}]'
is_international: Y
</syntaxhighlight>


== pricing / billing test ==
{{Tip|Useful for quick testing of specific parameters. Options in json_config take precedence over config file and DB settings.}}
voipmonitor --config-file=config/voipmonitor.conf -k -v1 --test-billing test_data/billing


=== Example of test_data/billing file===
== Regexp / Country / Billing Tests ==
Columns order
  - calldate
  - connect_duration
  - caller
  - called
  - sipcallerip
  - sipcalledip
  - expected price operator - (voluntary option)
  - expected price customer - (voluntary option)


2018-05-09 12:00,120,+4121353333,+41792826527,192.168.101.10,192.168.101.151,800,8
{| class="wikitable"
2018-05-09 12:00,120,+4121353333,+41792826527,192.168.101.10,192.168.101.151,800,8.1
! Test Type !! Command
2018-05-09 12:00,120,+4121353333,+41792826527,192.168.101.10,192.168.101.151
|-
| Regexp pattern || <code>voipmonitor --config-file=/etc/voipmonitor.conf -k -v1 --test-regexp '^800...[1-9][0-9]'</code>
|-
| Country by IP || <code>voipmonitor --config-file=/etc/voipmonitor.conf -k -v1 --find-country-for-ip=102.140.68.113</code>
|-
| Country by number || <code>voipmonitor --config-file=/etc/voipmonitor.conf -k -v1 --find-country-for-number 0034*12345</code>
|-
| Billing test || <code>voipmonitor --config-file=/etc/voipmonitor.conf -k -v1 --test-billing test_data/billing</code>
|}


= License Hints =
'''Billing test file format''' (CSV):
== Write state to db (count of cc channels for license purposse) ==
<syntaxhighlight lang="text">
php /var/www/html/php/run.php saveCallStatistics
# calldate,connect_duration,caller,called,sipcallerip,sipcalledip,[exp_price_op],[exp_price_cust]
2018-05-09 12:00,120,+4121353333,+41792826527,192.168.101.10,192.168.101.151,800,8
</syntaxhighlight>


== keep the license updated without processing alerts reports ==
= License Management =
(put into /etc/crontab)
04 04  * * *  root php run.php runUpdateLicenseKey


== License Details ==
{| class="wikitable"
=== detail on channels count usage ===
! Task !! Command
php /var/www/html/php/run.php checkLicense -v
|-
Less details:
| Write channel stats to DB || <code>php /var/www/html/php/run.php saveCallStatistics</code>
php /var/www/html/php/run.php checkLicense -v|grep max_peak -A3 -B1
|-
| Check license details || <code>php /var/www/html/php/run.php checkLicense -v</code>
|-
| Check max peak only || <code>php /var/www/html/php/run.php checkLicense -v <nowiki>|</nowiki> grep max_peak -A3 -B1</code>
|-
| Get token from DB || <code>SELECT content FROM voipmonitor.system WHERE type='license token';</code>
|-
| View license file || <code>cat /var/www/html/key.php</code>
|}


=== license file ===
'''Auto-update license via cron''' (without processing alerts/reports):
cat /var/www/html/key.php


=== Get current license token from db ===
<syntaxhighlight lang="bash">
mysql> select content from voipmonitor.system where type='license token';
04 04 * * * root php /var/www/html/php/run.php runUpdateLicenseKey
</syntaxhighlight>


= SCRIPTs for better run control =
= Utility Scripts =
== Alerts and Report ==
When alerts taking longer time to process then interval is schedulled it can cause out of memory or high load to CPU after some time because same alert is processed multipletimes for various time ranges. Following script allows manual run of disabled alert in GUI via crontab - its benefit is that it will run multiple alerts at same time unlike normal run where is processed one alert by one.


Follow this link [[script-for-multi-Instances-alerts-processing]] (deprecated)
{| class="wikitable"
! Script !! Purpose !! Details
|-
| Parallel alerts || Process alerts faster || Enable in '''Settings → System Configuration → Advanced → Number of parallel tasks'''
|-
| [[script-for-big-batchdownloads|Batch download]] || Download >1000 audio files || Bypasses GUI limit of 1000 CDRs
|-
| [[script-for-GUI-cron-control-oom|RAM control]] || Prevent OOM killer || Sets <code>oom_adj_score</code> for PHP threads
|-
| [[script-for-probes-backup|Probe backup]] || Backup all probe configs || Requires SSH access without password
|}


The GUI now supports parralel run of the alerts/report - enable it in system settings->Advanced->Number of parallel tasks
= Debugging =


== Batch download for more then 1000CDRs ==
== Charts Binary Crash ==
When you need to download lot of audio files - you use GUI->menu->cdr batch download,but it allows only 1000calls to process with one GUI's query.


Following script allows you to create audio from longer set of CDRs, also it process in multiple instances to get audio faster (beware of HDD IO/CPU) [[script-for-big-batchdownloads]]
When dmesg or Apache log shows charts crash:
<syntaxhighlight lang="text">
charts-x86_64[7321]: segfault at 10 ip 0000000000412553...
</syntaxhighlight>


== RAM (alerts / dashboards cache) ==
'''Debug procedure:'''
When there is lot of CDRs then alerts or caching of dashboard data can take lot of RAM, folloowing script will control if some php thread will not consume over limit, when it does, its oom_adj_score is set to be killed first (prevent killing of voipmonitor sniffer od db when running on same server)
<syntaxhighlight lang="bash">
# Create debug folder
mkdir /tmp/vm_charts_parameters


Follow link [[script-for-GUI-cron-control-oom]]
# After GUI creates charts, test with saved arguments
/var/www/html/bin/charts-x86_64 -i /tmp/vm_charts_parameters/files
</syntaxhighlight>


== Backup the settings from all probes and GUI ==
== Memory Leak Detection (Jemalloc) ==
The script gets voipmonitor.conf from all probes and do GUI backup config tables from db. Requires ssh access without password, error redirect to /dev/null, run it using cron


Follow link [[script-for-probes-backup]]
=== Compile Jemalloc ===


= charts binary crashes debug steps =
<syntaxhighlight lang="bash">
When apachelog or dmesg reports crashes of vm's charts binary like
# Download from https://github.com/jemalloc/jemalloc
Aug 20 10:32:30 C17VOIPMONDB02 kernel: charts-x86_64[7321]: segfault at 10 ip 0000000000412553 sp 00007ffff2638430 error 4 in charts-x86_64[400000+6c6000]
./autogen.sh
== create debug folder for charts ==
./configure --enable-prof
Create vm_charts_parameters in /tmp
make && make install
</syntaxhighlight>


after GUI will create some charts there files with arguments will be created.
=== Compile VoIPmonitor with Jemalloc ===
== test Arguments passed to charts binary ==
/var/www/html/bin/charts-x86_64 -i /tmp/vm_charts_parameters/files


= voipmonitor sniffer memory leaks detect and debug =
Edit <code>config.h</code>:
When voipmonitor uses more and more RAM (RSS/VSZ stat in syslog) without processing more CALLs (regs/messages) following steps can tell you where the RAM ends (it can be leak or some thread overload)
<syntaxhighlight lang="c">
== compile jemalloc ==
#define HAVE_LIBTCMALLOC 0
Download jemalloc from https://github.com/jemalloc/jemalloc
#define HAVE_LIBJEMALLOC 1
./autogen.sh
</syntaxhighlight>
#requires development tools Deb/ubu apt install build-essential, centos/rh yum groupinstall 'Development Tools'
./configure --enable-prof
make
make install


== enable jemalloc for voipmonitor and compile it ==
Edit <code>Makefile</code>:
./configure
<syntaxhighlight lang="makefile">
edit config.h,to have there
# Change -O2 to -O0 (disable optimization)
#define HAVE_LIBTCMALLOC 0
LIBS = ${SHARED_LIBS} -ljemalloc
#define HAVE_LIBJEMALLOC 1
</syntaxhighlight>
edit Makefile and disable optimization, add ljemalloc to libs, remove -ltcmalloc
substitute there -O2 with -O0 (It is capital o followed by zero)
LIBS = ${SHARED_LIBS} -ljemalloc


Finish compilation
<syntaxhighlight lang="bash">
make clean
make clean && make -j8
make -j8
</syntaxhighlight>


== enable X88 compatible sources and recompile ==
=== Run with Jemalloc ===
Copy sniffer sources with compiled binary to new location and recreate binary with -X88 (This is necessary to get correct memory allocation for debuging usin jeprof)
cp -a /usr/src/voipmonitor-git /usr/src/sniffer-git-jemalloc-X88
LD_PRELOAD=/usr/local/lib/libjemalloc.so ./voipmonitor -k -v1 -c -X88
#It will list of source files modification,then re-make
make clean
make


More detailed instructions on debuging using X88 [[X88-memoryConsumptionDebug]]
Modify <code>/etc/init.d/voipmonitor</code> start section:
<syntaxhighlight lang="bash">
LD_PRELOAD=/usr/local/lib/libjemalloc.so MALLOC_CONF='prof:true' /usr/local/src/voipmonitor --config-file $CONFIGFILE --pid-file $PIDFILE $ARGS
</syntaxhighlight>


== Modify init file or run sniffer manually with extra env arguments and parameters ==
=== Generate Memory Report ===
* LD_PRELOAD should not be needed now
* just ARGS="-v1" now


=== edit /etc/init.d/voipmonitor ===
<syntaxhighlight lang="bash">
ARGS="-v 1,force_log_sqlq,memory_stat,memory_stat_ignore_limit=100000"
# Install dependencies
#and in start section (2places) of a script
apt install graphviz ghostscript # or: yum install graphviz ghostscript
  LD_PRELOAD=/usr/local/lib/libjemalloc.so MALLOC_CONF='prof:true' /usr/src/sniffer-git-jemalloc-X88/voipmonitor --config-file $CONFIGFILE --pid-file $PIDFILE $ARGS


=== or run it from konsole / when sniffer service stopped ===
# Generate PDF report
LD_PRELOAD=/usr/local/lib/libjemalloc.so MALLOC_CONF='prof:true' /usr/src/sniffer-git-jemalloc-X88/voipmonitor --config-file=/etc/voipmonitor.conf -v 1,force_log_sqlq,memory_stat_ex,memory_stat_ignore_limit=100000,heapsafe
echo 'jemalloc_stat_full' | nc 127.0.0.1 5029 > /tmp/je_prof
jeprof --show_bytes --pdf /usr/local/src/sniffer/voipmonitor /tmp/je_prof > je_prof.pdf
</syntaxhighlight>


== Check results ==
=== X88 Mode (Detailed Memory Debug) ===
in some interval you should check the results of memory usage with
=== je_prof.pdf ===
yum install graphviz ghostscript
echo 'jemalloc_stat_full' | nc 127.0.0.1 5029 > /tmp/je_prof; jeprof --show_bytes --pdf /usr/src/sniffer-git-jemalloc-X88/voipmonitor /tmp/je_prof > je_prof.pdf


=== sniffer_memory.txt ===
For more detailed memory allocation info:
echo 'jemalloc_stat_full' | nc 127.0.0.1 5029
<syntaxhighlight lang="bash">
cp -a /usr/src/voipmonitor-git /usr/src/sniffer-git-jemalloc-X88
LD_PRELOAD=/usr/local/lib/libjemalloc.so ./voipmonitor -k -v1 -c -X88
make clean && make
</syntaxhighlight>


=== script for periodical collecting ===
Run with extra verbose options:
<syntaxhighlight lang="bash">
LD_PRELOAD=/usr/local/lib/libjemalloc.so MALLOC_CONF='prof:true' ./voipmonitor \
  --config-file=/etc/voipmonitor.conf \
  -v 1,force_log_sqlq,memory_stat_ex,memory_stat_ignore_limit=100000,heapsafe
</syntaxhighlight>


#!/bin/bash
See: [[X88-memoryConsumptionDebug]]
DATE=`date '+%Y%m%d_%H:%M:%S'`
LOGDIR=/root/vm_debug/log/$DATE
mkdir -p $LOGDIR
pdftmpname=/tmp/je_prof
pdfname=$LOGDIR/je_prof.pdf
txtname=$LOGDIR/mem_stat.txt
senname=$LOGDIR/senlog.txt
echo 'jemalloc_stat_full' | nc 127.0.0.1 5029 > $pdftmpname 2>&1
/usr/local/bin/jeprof --show_bytes --pdf /usr/src/sniffer-git-jemalloc-X88/voipmonitor $pdftmpname > $pdfname 2>&1
echo memory_stat | nc 127.0.0.1 5029 > $txtname 2>&1
echo sniffer_stats | nc 127.0.0.1 5029 > $senname 2>&1
rm $pdftmpname


=== script for periodical mail sending ===
== Thread Debugging ==


* add it to cron.hourly
{| class="wikitable"
! Method !! Usage
|-
| Log thread CPU || Add <code>-v1,threads_cpu_log</code> to command line
|-
| List threads || <code>echo 'sniffer_threads' | nc 127.0.0.1 5029</code>
|-
| Extended info || Set <code>sniffer_threads_ext=yes</code> in config (requires compile with <code>SNIFFER_THREADS_EXT true</code>)
|}


#!/bin/bash
'''sniffer_threads options:'''
* <code>no_sort</code> - don't sort by load
mail="YOUR@MAIL.COM"
* <code>only_traffic</code> - only threads with traffic
* <code>all</code> - include unloaded threads
sniffer_bin="/usr/local/sbin/voipmonitor"
* <code>line</code> - simple line output
manager_ip="127.0.0.1"
manager_port="5029"
tmp_je_prof_pdf="/tmp/je_prof.pdf"
tmp_je_prof_out="/tmp/je_prof"
tmp_pb_log="/tmp/pb_log"
tmp_sn_stat="/tmp/sn_stat"
echo 'jemalloc_stat_full' | nc $manager_ip $manager_port > $tmp_je_prof_out; jeprof --show_bytes --pdf $sniffer_bin $tmp_je_prof_out > $tmp_je_prof_pdf 2>/dev/null
echo 'packetbuffer_log' | nc $manager_ip $manager_port > $tmp_pb_log
echo 'sniffer_stats' | nc $manager_ip $manager_port > $tmp_sn_stat
echo 'jeprof' | mail -s 'jeprof' -A $tmp_je_prof_pdf -A $tmp_pb_log -A $tmp_sn_stat $mail
rm $tmp_je_prof_out
rm $tmp_je_prof_pdf
rm $tmp_pb_log
rm $tmp_sn_stat


= voipmonitor sniffer compile notes ss7 (wireshark) module =
== SS7 Module Compilation ==
(requires ws version 3.2):


== modify config.h ==
Requires Wireshark 3.2.
#define HAVE_LIBWIRESHARK 1
#define LIBWIRESHARK_VERSION 30200


== modify Makefile's INCLUDE ==
Edit <code>config.h</code>:
-I/usr/include/wireshark
<syntaxhighlight lang="c">
== modify Makefile's SHARED_LIBS==
#define HAVE_LIBWIRESHARK 1
-lwiretap -lwireshark -lwsutil
#define LIBWIRESHARK_VERSION 30200
</syntaxhighlight>


internal build in JIRA:/opt/debian-7-64bit
Edit <code>Makefile</code>:
== disable optimize in Makefile==
<syntaxhighlight lang="makefile">
change -O2 to -O0
INCLUDE += -I/usr/include/wireshark
SHARED_LIBS += -lwiretap -lwireshark -lwsutil
# Change -O2 to -O0
</syntaxhighlight>


== compile ==
<syntaxhighlight lang="bash">
./configure && make clean && make ss7
./configure && make clean && make ss7
</syntaxhighlight>


= testing customer pcaps =
= PCAP Testing =
== testing special pcaps ==
=== ipfix ===
Run first instance of voipmonitor that will act as receiver for packets and will push CDRs to db
in the settings enable ipfix options:
ipfix = yes
ipfix_bind_ip = 0.0.0.0
ipfix_bind_port = 12345


Then run scecond instance that will act as source for replay the ipfix encapsulated pcap
== Basic Methods ==
./voipmonitor --config-file=config/voipmonitor.conf -k -v1 --ipfix-client-emulation='/tmp/TCPdump_ipfix_stream.pcap;1.2.3.4;8.8.8.8;127.0.0.1;12345'
Params:
pcap file
2 IP address - 1.ip fix client,2.ip fix server
last IP : port telling to where to send the ipfix stream (IP:port of ipfix options set for the 1.st instance)


{| class="wikitable"
! Method !! Command
|-
| Basic upload || <code>voipmonitor --config-file=/etc/voipmonitor.conf -r /tmp/file.pcap</code>
|-
| Via packetbuffer (fast) || <code>voipmonitor --config-file=/etc/voipmonitor.conf -rpbsa9: /tmp/file.pcap</code>
|-
| Via packetbuffer (original time) || <code>voipmonitor --config-file=/etc/voipmonitor.conf -rpb: /tmp/file.pcap</code>
|}


== IPFIX Testing ==


== testing via basic upload aka GUI upload ==
'''Receiver instance:'''
voipmonitor --config-file=/etc/voipmonitor-customer.conf -r /tmp/file.pcap
<syntaxhighlight lang="ini">
== testing via packetbuffer upload ==
ipfix = yes
=== time shift to now, increased speed of replaying ===
ipfix_bind_ip = 0.0.0.0
voipmonitor --config-file=/etc/voipmonitor-customer.conf -rpbsa9: /tmp/file.pcap
ipfix_bind_port = 12345
=== no time shift via pb===
</syntaxhighlight>
voipmonitor --config-file=/etc/voipmonitor-customer.conf -rpb: /tmp/file.pcap
=== tcpreplay to running service ===
you need to enable additional argument when starting the service in /etc/init.d/voipmonitor
ARGS="-v 1,dump_call_flags,tcpreplay"
then use tcpreplay
tcpreplay -i eth0 /tmp/l/x.pcap
when error appears like
sending out eth0
processing file: /tmp/l/x.pcap
Warning in tcpreplay.c:replay_file() line 227:
/tmp/l/x.pcap DLT (LINUX_SLL) does not match that of the outbound interface: eth0 (EN10MB)
probably captured on any interface and layer2 missing, here follow stpes on how to add it:


==== adding layer2 to pcap ====
'''Sender instance:'''
after capture was done on any interface and you need to replay it to hw interface you need to add layer2 (at least in 3.4.3 v.tcpreplay)
<syntaxhighlight lang="bash">
tcprewrite --dlt=enet -i /tmp/l/x.pcap -o /tmp/l/x_enet-encaps.pcap
voipmonitor --config-file=/etc/voipmonitor.conf -k -v1 \
tcprewrite --enet-dmac=00:55:22:AF:C6:37 --enet-smac=00:44:66:FC:29:AF --infile=/tmp/l/x_enet-encaps.pcap --outfile=/tmp/l/x_enet-encaps-l2.pcap
  --ipfix-client-emulation='/tmp/ipfix.pcap;1.2.3.4;8.8.8.8;127.0.0.1;12345'
# Parameters: pcap_file;client_ip;server_ip;dest_ip;dest_port
</syntaxhighlight>
=== IPFIX PCAP Download Behavior ===


==== rewrite IPv4 address in whole pcap ====
'''Key fact:''' IPFIX data is internally converted to packet format for processing. This means:
when you need to test alert based on IP adresses (also country continent alert based on IPs) you can find usefull to change IP address in pcap and use it multiple times with various addresses:
* '''PCAP files CAN be downloaded''' from the GUI for IPFIX-sourced calls
tcprewrite --pnat=8.7.6.5/32:1.2.3.4/32 -i ./7efd0e8b87a54f48ac04b7a49fdf5669.pcap -o ./7e-rew.pcap
* SIP signaling is reconstructed from the IPFIX data
* '''RTP streams are NOT included''' in the PCAP - only QoS metrics from IPFIX data are available, not actual audio packets


= Rename mysql database =
When downloading PCAP from IPFIX calls with TLS, TCP sequence numbers may be set to 0 causing Wireshark to display incorrectly. Disable TCP sequence analysis in Wireshark preferences to view all packets.
It's not possible to do it via direct command. You need to use '''RENAME TABLE''' command.
== Tcpreplay ==
With this SELECT you generate the commands for the rename of the all tables in the database. (Replace OLD_DB_NAME and NEW_DB_NAME)


SELECT CONCAT('RENAME TABLE ',table_schema,'.',table_name,
Enable in <code>/etc/init.d/voipmonitor</code>:
    ' TO ','NEW_DB_NAME.',table_name,';')
<syntaxhighlight lang="bash">
FROM information_schema.TABLES
ARGS="-v 1,dump_call_flags,tcpreplay"
WHERE table_schema LIKE 'OLD_DB_NAME';
</syntaxhighlight>


The output:
'''Add Layer 2 if missing''' (for captures done on "any" interface):
<syntaxhighlight lang="bash">
tcprewrite --dlt=enet -i /tmp/x.pcap -o /tmp/x_enet.pcap
tcprewrite --enet-dmac=00:55:22:AF:C6:37 --enet-smac=00:44:66:FC:29:AF \
  --infile=/tmp/x_enet.pcap --outfile=/tmp/x_l2.pcap
</syntaxhighlight>


RENAME TABLE OLD_DB_NAME.table1 TO NEW_DB_NAME.table1;
'''Rewrite IP addresses:'''
RENAME TABLE OLD_DB_NAME.table2 TO NEW_DB_NAME.table2;
<syntaxhighlight lang="bash">
RENAME TABLE OLD_DB_NAME.tableX TO NEW_DB_NAME.tableX;
tcprewrite --pnat=8.7.6.5/32:1.2.3.4/32 -i ./original.pcap -o ./rewritten.pcap
</syntaxhighlight>


Run these commands a you are ready.
== SSL/TLS Testing ==


'''Attention! Sometimes you can have a problem with moving of the foreign keys.'''
<syntaxhighlight lang="bash">
voipmonitor --config-file /etc/test.conf -k -v1,pcap_stat_period=1,_ssl,_tls,_ssldecode \
  -rpba:/tmp/keys.pcap@@/tmp/call.pcap \
  --json_config='[{"sipport":"8089"},{"ssl":"yes"},{"ssl_ipport":"192.168.0.1:8089"},{"ssl_sessionkey_udp":"yes"},{"ssl_sessionkey_udp_port":"1234"}]'
</syntaxhighlight>


= disabling TCP sack =
For TLS details, see [[Tls]].
On buggy kernels (all before 2019/03) following prevents SACK issue
sideback is that on lossy lines (packet lost or big delays) the tcp traffic will increase)
echo "0" > /proc/sys/net/ipv4/tcp_sack


= MacOS high sierra in virtual box (on windows) =
= Manager API =
== Download Image ==
from - https://drive.google.com/file/d/0B0EsZGPuNAPvVDlicGt1NUx0Y0E/view
== Prepare ISO for install ==
===Create High Sierra DMG Disk Image===
hdiutil create -o /tmp/Highsierra -size 7900m -volname highsierra -layout SPUD -fs HFS+J


=== Mount DMG Image to your macOS ===
'''For complete reference, see [[Manager_API]].'''
hdiutil attach /tmp/Highsierra.dmg -noverify -mountpoint /Volumes/Highsierra


=== Create a High Sierra ISO image ===
This section covers quick debug commands. For encryption setup and full command list, see the main article.
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/Highsierra


=== Unmount Disk Image ===
== Via Manager Port (5029) ==
hdiutil detach /volumes/Install\ macOS\ High\ Sierra


=== Convert DMG to ISO ===
<syntaxhighlight lang="bash">
hdiutil convert /tmp/Highsierra.dmg -format UDTO -o ~/Desktop/Highsierra
# These require encryption disabled OR use socket file
echo 'listcalls' | nc 127.0.0.1 5029
echo 'sniffer_stat' | nc 127.0.0.1 5029
echo 'jemalloc_stat_full' | nc 127.0.0.1 5029
echo 'sniffer_threads' | nc 127.0.0.1 5029
</syntaxhighlight>


=== Rename and Move ISO Image to Desktop ===
{{Tip|For encrypted communication, use the GUI's <code>run.php send_manager_cmd</code> or Unix socket. See [[Manager_API#Usage Examples]].}}
mv ~/Desktop/Highsierra.cdr ~/Desktop/Highsierra.iso


== Create new virtual Image ==
== Via Server Port (60024) ==
during preconfigure of new image set:
memmory 3-6GB
disk size 100GB
then edit it's settings and additionally modify:
system -> Motherboard -> Chipset: PIIX3
system -> Processor -> count (2), Enable PAE/NX
system -> Storage -> Attributes-> Optical drive->Sata port 1, for the newly created iso
display -> Video memory -> 128MB
display -> Graphics Controler -> VMSVGA


== Add the VirtualBox macOS Code to CMD ==
Used in distributed deployments for probe management:
cd "C:\Program Files\Oracle\VirtualBox\"
VBoxManage.exe modifyvm "Your VM Name" --cpuidset 00000001 000106e5 00100800 0098e3fd bfebfbff
VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/efi/0/Config/DmiSystemProduct" "iMac11,3"
VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/efi/0/Config/DmiSystemVersion" "1.0"
VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/efi/0/Config/DmiBoardProduct" "Iloveapple"
VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/smc/0/Config/DeviceKey" "ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc"
VBoxManage setextradata "Your VM Name" "VBoxInternal/Devices/smc/0/Config/GetKeyFromRealSMC" 1


== Install macOS on virtulBox ==
<syntaxhighlight lang="bash">
#Open VirtualBox and turn on your High Sierra, then Open "Disk Utility".
# List connected clients
#Format VirtualBox Virtual Disk with "Mac OS Extended". (GUID:Partition map)
echo '{"type_connection":"manager_command","command":"active"}' | nc 127.0.0.1 60024
#Now, you can install macOS High Sierra on new virtual disk with your ISO Image.
#After your installation is completed, turn off your macOS High Sierra. Open VirtualBox, and remove High Sierra.iso file.
#Turn on your Virtual Machine. At UEFI Shell screen, boot with this commands:


>"fs1:\macOS Install Data\Locked Files\Boot Files\boot.efi"
# Send command to specific probe
echo '{"type_connection":"gui_command","sensor_id":1011,"command":"terminating"}' | nc 127.0.0.1 60024
</syntaxhighlight>


= GUI Workarounds =


== Start the High Sierra Virtual machine and Enjoy ==
== Disable Sensor Logs Popup ==


= Measurement =
{{Note|There is no built-in GUI option to disable the sensor logs popup shown at admin login.}}
== Memory speed ==


sysbench memory --threads=2 run
'''Option 1: Periodic SQL update'''
<syntaxhighlight lang="sql">
UPDATE voipmonitor.log_sensor SET confirmed = 1;
</syntaxhighlight>


* should be over 5000 MiB/sec
'''Option 2: Database trigger (permanent)'''
<syntaxhighlight lang="sql">
DELIMITER $$
CREATE TRIGGER before_insert_log_sensor
BEFORE INSERT ON log_sensor
FOR EACH ROW
BEGIN
    SET NEW.confirmed = 1;
END$$
DELIMITER ;
</syntaxhighlight>


= SSL and keylogger =
== IonCube Crash Fix (Ubuntu 22.04 + PHP 7.4) ==
== How to test it in voipmonitor ==
./voipmonitor --config-file /etc/test.conf -k -v1,pcap_stat_period=1,_ssl,_tls,_ssldecode,ssl_sessionkey,dump_sip_line -rpba:/tmp/keys.pcap@@/tmp/call.pcap --json_config='[{"sipport":"8089"},{"ssl":"yes"},{"ssl_ipport":"192.168.0.1:8089"},{"ssl_sessionkey_udp":"yes"},{"ssl_sessionkey_udp_port":"1234"},{"ssl_sessionkey_udp_maxwait_ms":10000},{"interface":"lo"},{"spooldir":"/var/spool/voipmonitorTLS"}]'


== How to test it in wireshark/tshark ==
'''Symptom:''' ldap.so crash at login page (CVE-2024-8932).


=== Get the keys from keyloger's dump ===
'''Fix:'''
ngrep -I /tmp/keycapture.pcap |grep '^ ' |cut -d ' ' -f3- > /tmp/keys.txt
<syntaxhighlight lang="bash">
# Backup
cd /usr/lib/php/20190902 && mkdir BKUP && cp -pv ldap.so* BKUP


=== Decrypt with tshark ===
# Download and extract fixed package
tshark -r '/tmp/tlscall.pcap' -o 'tls.keylog_file: /tmp/keys.txt' -o 'tls.debug_file: /dev/stdout'
wget https://pl.archive.ubuntu.com/ubuntu/pool/main/p/php7.4/php7.4-ldap_7.4.3-4ubuntu2.24_amd64.deb
ar x php7.4-ldap_7.4.3-4ubuntu2.24_amd64.deb


=== Decrypt in wireshark ===
# Install and restart
In edit->preferences->protocol->TLS->pre-master secret log filename and choose the keys.txt
cp -v ./usr/lib/php/20190902/ldap.so /usr/lib/php/20190902/ldap.so
then find the client Hello HS packet, right click on it and follow stream - TLS
systemctl restart apache2
</syntaxhighlight>


=== Check if we have the right keys for RTP/DTLS ===
= Database Operations =
In rtp you have to find dtls packets (dtls.record.content_type == 22), select 'client random' in them and find the 'Random' item in it.


That's e.g. e54fc0f917cdd5c0d914f24956cdfd689022709f59ca4cd7fc20296db17039d8 in our sample. And this must be included in the captured keys.
== Rename MySQL Database ==


= Spooldir testing =
Generate RENAME TABLE commands:
When there are problems with cleaning the spooldir or spooldir size not respects the settings you can use following command to test
<syntaxhighlight lang="sql">
voipmonitor --config-file /etc/voipmonitor.conf -k -v1 --test-cleanspool-load all
SELECT CONCAT('RENAME TABLE ',table_schema,'.',table_name,' TO NEW_DB.',table_name,';')
FROM information_schema.TABLES
WHERE table_schema LIKE 'OLD_DB';
</syntaxhighlight>


= Manager API via server port =
{{Warning|1=Foreign keys may cause issues during rename.}}
== get list of the connected clients ==
echo '{"type_connection":"manager_command","command":"active"}'|nc 127.0.0.1 60024
== send terminating manager command to a probe ==
echo '{"type_connection":"gui_command","sensor_id":1011,"command":"terminating"}'|nc 127.0.0.1 60024


= HA proxy =
== Spooldir Testing ==
[[sample HAproxy configuration]]


== High CPS config for voipmonitor with hugepages ==
<syntaxhighlight lang="bash">
[[voipmonitor and hugepages]]
voipmonitor --config-file /etc/voipmonitor.conf -k -v1 --test-cleanspool-load all
</syntaxhighlight>


= IOPS tests =
= Remote Support Access =
--rw can be randread,randwrite,randrw
  fio --name=rootTest --ioengine=libaio --rw=randwrite --bs=8k --numjobs=16 --size=1G --runtime=600s --time_based --ramp_time=15s --norandommap --filename=/root/testW.dat --output=/root/fio_db_write.txt


= Rocky 9=
== VPN Connection Issues ==
[[Rocky 9]]


= Manager api of a sniffer =
When support staff cannot connect to client VPN (Fortinet, etc.):
[[encryption_in_manager_api]]


= Manager api of a sniffer for customers =
# '''Cause:''' Support IP not whitelisted on client firewall
[[encryption_in_manager_api_customer]]
# '''Solution:''' Client must add support staff's public IP to their VPN/firewall whitelist
# '''Note:''' This is client-side network administration, not a VoIPmonitor issue


= TLS decode by Ribbon SBC 7k=
{{Note|1=Don't confuse VPN network access with FortiToken 2FA (GUI authentication).}}
[[Ribbon7k monitoring profiles]]


= Email templates =
= System Troubleshooting =
common requests in supports [[common body of support emails]]


= IPACCOUNT =
== TCP SACK (Buggy Kernels pre-2019/03) ==
How to enable [[ipaccount]] feature in the voipmonitor


= DTLS =
<syntaxhighlight lang="bash">
[[DTLS]] SRTP decryption using voipmonitor
echo "0" > /proc/sys/net/ipv4/tcp_sack
</syntaxhighlight>


=ioncube is crashing for apache/https=
== Memory Speed Test ==


== wrong privileges ==
<syntaxhighlight lang="bash">
If following command is crashig under www-data used but not under root user:
sysbench memory --threads=2 run
su -s '/bin/bash' -c "php -r 'echo extension_loaded(\"ionCube Loader\")?\"yes\":\"no\";'" www-data
# Should be >5000 MiB/sec
</syntaxhighlight>


it can be caused by wrong mod for the ioncube.ini file or ioncube's module, you can test with strace (search for ioncube or denied)
= Additional Resources =
strace -f  su -s '/bin/bash' -c "php -r 'echo extension_loaded(\"ionCube Loader\")?\"yes\":\"no\";'" www-data 2> /tmp/text.txt


== crashes in libc ==
{| class="wikitable"
It was experieced in ubuntu 22.04 with php 7.4 that ioncube causes crash in ldap.so (displays following error on the login page)
! Topic !! Link
Failed check Ioncube.com PHP Loader for php cli : PHP Warning: PHP Startup: Unable to load dynamic library 'ldap.so' (tried: /usr/lib/php/20190902/ldap.so (/usr/lib/php/20190902/ldap.so: undefined symbol: RETURN_THROWS), /usr/lib/php/20190902/ldap.so.so (/usr/lib/php/20190902/ldap.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
|-
The reason is new ldap library broken in ubuntu 22.04
| HAProxy config || [[sample HAproxy configuration]]
|-
| Hugepages for high CPS || [[voipmonitor and hugepages]]
|-
| Manager API reference || [[Manager_API]]
|-
| Syslog status line || [[Syslog_Status_Line]]
|-
| Ribbon SBC 7k TLS || [[Ribbon7k monitoring profiles]]
|-
| Support email templates || [[common body of support emails]]
|-
| IPACCOUNT feature || [[ipaccount]]
|-
| DTLS decryption || [[DTLS]]
|-
| Rocky 9 installation || [[Rocky 9]]
|}


https://ubuntu.com/security/CVE-2024-8932
'''IOPS testing:'''
<syntaxhighlight lang="bash">
fio --name=rootTest --ioengine=libaio --rw=randwrite --bs=8k --numjobs=16 \
  --size=1G --runtime=600s --time_based --filename=/root/testW.dat
</syntaxhighlight>


https://askubuntu.com/questions/1535405/php7-4-ldap-broken-on-focal-after-13-dec-2024


Backup current ldap libs
cd /usr/lib/php/20190902
mkdir BKUP
cp -pv ldap.so* BKUP


Download and extract the package.
= AI Summary for RAG =
wget https://pl.archive.ubuntu.com/ubuntu/pool/main/p/php7.4/php7.4-ldap_7.4.3-4ubuntu2.24_amd64.deb
ar x php7.4-ldap_7.4.3-4ubuntu2.24_amd64.deb


Copy in the fixed lib from local tmp/ to prod.
'''Summary:''' Internal support documentation for VoIPmonitor team covering testing, debugging, and troubleshooting procedures. Key topics: (1) Testing configuration with <code>--json_config</code> to override settings without editing files; (2) Testing regexp, country assignment, and billing; (3) License management commands (<code>checkLicense</code>, cron updates); (4) Debugging tools including jemalloc for memory leaks, X88 mode for detailed allocation, thread monitoring via <code>sniffer_threads</code> command; (5) PCAP testing methods (basic upload, packetbuffer, IPFIX emulation, tcpreplay with L2 addition and IP rewriting); (6) SS7/Wireshark module compilation; (7) Manager API commands on ports 5029 and 60024; (8) GUI workarounds including sensor logs popup disable (database trigger solution); (9) IonCube ldap.so crash fix for Ubuntu 22.04 + PHP 7.4; (10) VPN access troubleshooting (IP whitelisting on client firewall).
cp -v ./usr/lib/php/20190902/ldap.so /usr/lib/php/20190902/ldap.so
'./usr/lib/php/20190902/ldap.so' -> '/usr/lib/php/20190902/ldap.so'


Restart apache and test.
'''Keywords:''' internal support, json_config, testing, regexp, country assignment, billing test, license, checkLicense, jemalloc, memory leak, X88, sniffer_threads, SS7, wireshark, IPFIX, tcpreplay, pcap testing, Manager API, IonCube, ldap.so, Ubuntu 22.04, VPN access, IP whitelisting, sensor logs popup, log_sensor, database trigger, tcp_sack, sysbench, memory speed
systemctl restart apache2


''thanks to Andrew from distributel.ca for this article''
'''Key Questions:'''
* How to test configuration without modifying voipmonitor.conf?
* How to test regexp patterns or country assignment?
* How to check license channel usage?
* How to debug memory leaks using jemalloc?
* How to compile voipmonitor with jemalloc or SS7 support?
* How to generate jeprof PDF memory report?
* How to monitor thread load with sniffer_threads?
* How to test IPFIX or replay PCAPs?
* How to add layer 2 to PCAP for tcpreplay?
* How to disable sensor logs popup in GUI?
* How to fix IonCube ldap.so crash in Ubuntu 22.04?
* How to resolve VPN connection issues for remote support?
* How to disable TCP SACK on buggy kernels?
* How to test memory speed with sysbench?

Latest revision as of 23:55, 9 January 2026


⚠️ Warning: This documentation is for the internal support team. Use at your own risk and test on non-production servers first.

Quick Reference

Testing Configuration

Override Settings with json_config

Override config file and database settings without editing files: 

voipmonitor --config-file=/etc/voipmonitor.conf -k -v1 \
  --json_config='[{"id_sensor":"11"},{"interface":"lo"},{"natalias":"8.8.8.8 10.10.100.50"}]'

💡 Tip: Useful for quick testing of specific parameters. Options in json_config take precedence over config file and DB settings.

Regexp / Country / Billing Tests

Test Type Command
Regexp pattern voipmonitor --config-file=/etc/voipmonitor.conf -k -v1 --test-regexp '^800...[1-9][0-9]'
Country by IP voipmonitor --config-file=/etc/voipmonitor.conf -k -v1 --find-country-for-ip=102.140.68.113
Country by number voipmonitor --config-file=/etc/voipmonitor.conf -k -v1 --find-country-for-number 0034*12345
Billing test voipmonitor --config-file=/etc/voipmonitor.conf -k -v1 --test-billing test_data/billing

Billing test file format (CSV): 

# calldate,connect_duration,caller,called,sipcallerip,sipcalledip,[exp_price_op],[exp_price_cust]
2018-05-09 12:00,120,+4121353333,+41792826527,192.168.101.10,192.168.101.151,800,8

License Management

Task Command
Write channel stats to DB php /var/www/html/php/run.php saveCallStatistics
Check license details php /var/www/html/php/run.php checkLicense -v
Check max peak only php /var/www/html/php/run.php checkLicense -v | grep max_peak -A3 -B1
Get token from DB SELECT content FROM voipmonitor.system WHERE type='license token';
View license file cat /var/www/html/key.php

Auto-update license via cron (without processing alerts/reports): 

04 04 * * * root php /var/www/html/php/run.php runUpdateLicenseKey

Utility Scripts

Script Purpose Details
Parallel alerts Process alerts faster Enable in Settings → System Configuration → Advanced → Number of parallel tasks
Batch download Download >1000 audio files Bypasses GUI limit of 1000 CDRs
RAM control Prevent OOM killer Sets oom_adj_score for PHP threads
Probe backup Backup all probe configs Requires SSH access without password

Debugging

Charts Binary Crash

When dmesg or Apache log shows charts crash: 

charts-x86_64[7321]: segfault at 10 ip 0000000000412553...

Debug procedure: 

# Create debug folder
mkdir /tmp/vm_charts_parameters

# After GUI creates charts, test with saved arguments
/var/www/html/bin/charts-x86_64 -i /tmp/vm_charts_parameters/files

Memory Leak Detection (Jemalloc)

Compile Jemalloc

# Download from https://github.com/jemalloc/jemalloc
./autogen.sh
./configure --enable-prof
make && make install

Compile VoIPmonitor with Jemalloc

Edit config.h: 

#define HAVE_LIBTCMALLOC 0
#define HAVE_LIBJEMALLOC 1

Edit Makefile: 

# Change -O2 to -O0 (disable optimization)
LIBS = ${SHARED_LIBS} -ljemalloc

make clean && make -j8

Run with Jemalloc

Modify /etc/init.d/voipmonitor start section: 

LD_PRELOAD=/usr/local/lib/libjemalloc.so MALLOC_CONF='prof:true' /usr/local/src/voipmonitor --config-file $CONFIGFILE --pid-file $PIDFILE $ARGS

Generate Memory Report

# Install dependencies
apt install graphviz ghostscript  # or: yum install graphviz ghostscript

# Generate PDF report
echo 'jemalloc_stat_full' | nc 127.0.0.1 5029 > /tmp/je_prof
jeprof --show_bytes --pdf /usr/local/src/sniffer/voipmonitor /tmp/je_prof > je_prof.pdf

X88 Mode (Detailed Memory Debug)

For more detailed memory allocation info: 

cp -a /usr/src/voipmonitor-git /usr/src/sniffer-git-jemalloc-X88
LD_PRELOAD=/usr/local/lib/libjemalloc.so ./voipmonitor -k -v1 -c -X88
make clean && make

Run with extra verbose options: 

LD_PRELOAD=/usr/local/lib/libjemalloc.so MALLOC_CONF='prof:true' ./voipmonitor \
  --config-file=/etc/voipmonitor.conf \
  -v 1,force_log_sqlq,memory_stat_ex,memory_stat_ignore_limit=100000,heapsafe

See: X88-memoryConsumptionDebug

Thread Debugging

Method Usage
Log thread CPU Add -v1,threads_cpu_log to command line
List threads nc 127.0.0.1 5029
Extended info Set sniffer_threads_ext=yes in config (requires compile with SNIFFER_THREADS_EXT true)

sniffer_threads options:

  • no_sort - don't sort by load
  • only_traffic - only threads with traffic
  • all - include unloaded threads
  • line - simple line output

SS7 Module Compilation

Requires Wireshark 3.2.

Edit config.h: 

#define HAVE_LIBWIRESHARK 1
#define LIBWIRESHARK_VERSION 30200

Edit Makefile: 

INCLUDE += -I/usr/include/wireshark
SHARED_LIBS += -lwiretap -lwireshark -lwsutil
# Change -O2 to -O0

./configure && make clean && make ss7

PCAP Testing

Basic Methods

Method Command
Basic upload voipmonitor --config-file=/etc/voipmonitor.conf -r /tmp/file.pcap
Via packetbuffer (fast) voipmonitor --config-file=/etc/voipmonitor.conf -rpbsa9: /tmp/file.pcap
Via packetbuffer (original time) voipmonitor --config-file=/etc/voipmonitor.conf -rpb: /tmp/file.pcap

IPFIX Testing

Receiver instance: 

ipfix = yes
ipfix_bind_ip = 0.0.0.0
ipfix_bind_port = 12345

Sender instance: 

voipmonitor --config-file=/etc/voipmonitor.conf -k -v1 \
  --ipfix-client-emulation='/tmp/ipfix.pcap;1.2.3.4;8.8.8.8;127.0.0.1;12345'
# Parameters: pcap_file;client_ip;server_ip;dest_ip;dest_port

IPFIX PCAP Download Behavior

Key fact: IPFIX data is internally converted to packet format for processing. This means:

  • PCAP files CAN be downloaded from the GUI for IPFIX-sourced calls
  • SIP signaling is reconstructed from the IPFIX data
  • RTP streams are NOT included in the PCAP - only QoS metrics from IPFIX data are available, not actual audio packets

When downloading PCAP from IPFIX calls with TLS, TCP sequence numbers may be set to 0 causing Wireshark to display incorrectly. Disable TCP sequence analysis in Wireshark preferences to view all packets.

Tcpreplay

Enable in /etc/init.d/voipmonitor: 

ARGS="-v 1,dump_call_flags,tcpreplay"

Add Layer 2 if missing (for captures done on "any" interface): 

tcprewrite --dlt=enet -i /tmp/x.pcap -o /tmp/x_enet.pcap
tcprewrite --enet-dmac=00:55:22:AF:C6:37 --enet-smac=00:44:66:FC:29:AF \
  --infile=/tmp/x_enet.pcap --outfile=/tmp/x_l2.pcap

Rewrite IP addresses: 

tcprewrite --pnat=8.7.6.5/32:1.2.3.4/32 -i ./original.pcap -o ./rewritten.pcap

SSL/TLS Testing

voipmonitor --config-file /etc/test.conf -k -v1,pcap_stat_period=1,_ssl,_tls,_ssldecode \
  -rpba:/tmp/keys.pcap@@/tmp/call.pcap \
  --json_config='[{"sipport":"8089"},{"ssl":"yes"},{"ssl_ipport":"192.168.0.1:8089"},{"ssl_sessionkey_udp":"yes"},{"ssl_sessionkey_udp_port":"1234"}]'

For TLS details, see Tls.

Manager API

For complete reference, see Manager_API.

This section covers quick debug commands. For encryption setup and full command list, see the main article.

Via Manager Port (5029)

# These require encryption disabled OR use socket file
echo 'listcalls' | nc 127.0.0.1 5029
echo 'sniffer_stat' | nc 127.0.0.1 5029
echo 'jemalloc_stat_full' | nc 127.0.0.1 5029
echo 'sniffer_threads' | nc 127.0.0.1 5029

💡 Tip: For encrypted communication, use the GUI's run.php send_manager_cmd or Unix socket. See Manager_API#Usage Examples.

Via Server Port (60024)

Used in distributed deployments for probe management: 

# List connected clients
echo '{"type_connection":"manager_command","command":"active"}' | nc 127.0.0.1 60024

# Send command to specific probe
echo '{"type_connection":"gui_command","sensor_id":1011,"command":"terminating"}' | nc 127.0.0.1 60024

GUI Workarounds

Disable Sensor Logs Popup

ℹ️ Note: There is no built-in GUI option to disable the sensor logs popup shown at admin login.

Option 1: Periodic SQL update 

UPDATE voipmonitor.log_sensor SET confirmed = 1;

Option 2: Database trigger (permanent) 

DELIMITER $$
CREATE TRIGGER before_insert_log_sensor
BEFORE INSERT ON log_sensor
FOR EACH ROW
BEGIN
    SET NEW.confirmed = 1;
END$$
DELIMITER ;

IonCube Crash Fix (Ubuntu 22.04 + PHP 7.4)

Symptom: ldap.so crash at login page (CVE-2024-8932).

Fix: 

# Backup
cd /usr/lib/php/20190902 && mkdir BKUP && cp -pv ldap.so* BKUP

# Download and extract fixed package
wget https://pl.archive.ubuntu.com/ubuntu/pool/main/p/php7.4/php7.4-ldap_7.4.3-4ubuntu2.24_amd64.deb
ar x php7.4-ldap_7.4.3-4ubuntu2.24_amd64.deb

# Install and restart
cp -v ./usr/lib/php/20190902/ldap.so /usr/lib/php/20190902/ldap.so
systemctl restart apache2

Database Operations

Rename MySQL Database

Generate RENAME TABLE commands: 

SELECT CONCAT('RENAME TABLE ',table_schema,'.',table_name,' TO NEW_DB.',table_name,';')
FROM information_schema.TABLES
WHERE table_schema LIKE 'OLD_DB';

⚠️ Warning: Foreign keys may cause issues during rename.

Spooldir Testing

voipmonitor --config-file /etc/voipmonitor.conf -k -v1 --test-cleanspool-load all

Remote Support Access

VPN Connection Issues

When support staff cannot connect to client VPN (Fortinet, etc.):

  1. Cause: Support IP not whitelisted on client firewall
  2. Solution: Client must add support staff's public IP to their VPN/firewall whitelist
  3. Note: This is client-side network administration, not a VoIPmonitor issue

ℹ️ Note: Don't confuse VPN network access with FortiToken 2FA (GUI authentication).

System Troubleshooting

TCP SACK (Buggy Kernels pre-2019/03)

echo "0" > /proc/sys/net/ipv4/tcp_sack

Memory Speed Test

sysbench memory --threads=2 run
# Should be >5000 MiB/sec

Additional Resources

Topic Link
HAProxy config sample HAproxy configuration
Hugepages for high CPS voipmonitor and hugepages
Manager API reference Manager_API
Syslog status line Syslog_Status_Line
Ribbon SBC 7k TLS Ribbon7k monitoring profiles
Support email templates common body of support emails
IPACCOUNT feature ipaccount
DTLS decryption DTLS
Rocky 9 installation Rocky 9

IOPS testing: 

fio --name=rootTest --ioengine=libaio --rw=randwrite --bs=8k --numjobs=16 \
  --size=1G --runtime=600s --time_based --filename=/root/testW.dat


AI Summary for RAG

Summary: Internal support documentation for VoIPmonitor team covering testing, debugging, and troubleshooting procedures. Key topics: (1) Testing configuration with --json_config to override settings without editing files; (2) Testing regexp, country assignment, and billing; (3) License management commands (checkLicense, cron updates); (4) Debugging tools including jemalloc for memory leaks, X88 mode for detailed allocation, thread monitoring via sniffer_threads command; (5) PCAP testing methods (basic upload, packetbuffer, IPFIX emulation, tcpreplay with L2 addition and IP rewriting); (6) SS7/Wireshark module compilation; (7) Manager API commands on ports 5029 and 60024; (8) GUI workarounds including sensor logs popup disable (database trigger solution); (9) IonCube ldap.so crash fix for Ubuntu 22.04 + PHP 7.4; (10) VPN access troubleshooting (IP whitelisting on client firewall).

Keywords: internal support, json_config, testing, regexp, country assignment, billing test, license, checkLicense, jemalloc, memory leak, X88, sniffer_threads, SS7, wireshark, IPFIX, tcpreplay, pcap testing, Manager API, IonCube, ldap.so, Ubuntu 22.04, VPN access, IP whitelisting, sensor logs popup, log_sensor, database trigger, tcp_sack, sysbench, memory speed

Key Questions:

  • How to test configuration without modifying voipmonitor.conf?
  • How to test regexp patterns or country assignment?
  • How to check license channel usage?
  • How to debug memory leaks using jemalloc?
  • How to compile voipmonitor with jemalloc or SS7 support?
  • How to generate jeprof PDF memory report?
  • How to monitor thread load with sniffer_threads?
  • How to test IPFIX or replay PCAPs?
  • How to add layer 2 to PCAP for tcpreplay?
  • How to disable sensor logs popup in GUI?
  • How to fix IonCube ldap.so crash in Ubuntu 22.04?
  • How to resolve VPN connection issues for remote support?
  • How to disable TCP SACK on buggy kernels?
  • How to test memory speed with sysbench?
Retrieved from "https://www.voipmonitor.org/doc/index.php?title=Internal_support_hints&oldid=10474"