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--- installation_guide:debug:start [2020/06/17 10:03] – borja
+++ installation_guide:debug:start [2024/02/19 16:09] – [Monitor the file descriptors] borja
@@ Line 15: / Line 15: @@
 CLI> voximal debug interpreter
 </code>
+==== View the traces flow ===
+Execute :
+<code>
+root# tail -f /var/log/voximal/debug.log
+</code>
+With colors :
+<code>
+root# tail -f /var/log/voximal/debug.log | ccze -A
+</code>
 ==== Generate a normal stop ====
@@ Line 68: / Line 82: @@
 </code>
+==== Powerful SIP traffic monitor ====
+Use the "sngrep" tool :
+<code>
+sngrep
+</code>
+<code>
+                                      xINVITE sip:0970265644@84.246.228.243:506
+.140.150.200:5060       xuser=phone SIP/2.0
+          qqqqqqqqqqwqqqqqqqqq        xVia: SIP/2.0/UDP 128.140.150.200:5060;br
+:22:36.632419   x        INVITE (Sxch=z9hG4bKk5efg100aob0k0be5og0.1
+        +0.000994   x qqqqqqqqqqqqqqqqxMax-Forwards: 66
+:22:36.633413   x         100 TryixFrom: <sip:0677379042@172.17.28.229;user
+        +0.048311   x <qqqqqqqqqqqqqqqxhone>;tag=1c1397877903
+:22:36.681724   x        200 OK (SxTo: sip:0970265644@ipdirections.net
+        +0.085629   x <qqqqqqqqqqqqqqqxCall-ID: SDk6upe02-efa980599ffc4b83e9221
+:22:36.767353   x             ACK xec76ea708-v300g00030
+        +8.759074   x qqqqqqqqqqqqqqqqxCSeq: 1 INVITE
+:22:45.526427   x             BYE xContact: <sip:128.140.150.200:5060;maddr
+        +0.000527   x qqqqqqqqqqqqqqqqx28.140.150.200>
+:22:45.526954   x           200 OKxSupported: sdp-anat
+                    x <qqqqqqqqqqqqqqqxAllow: INVITE,ACK,CANCEL,BYE,OPTIONS
+                    x                 xP-Asserted-Identity: <sip:0677379042@172
+                    x                 x7.28.229;user=phone>
+                    x                 xContent-Type: application/sdp
+                    x                 xContent-Length: 435
+                    x                 xP-Early-Media: supported
+                    x                 xP-Access-Network-Info: GSTN;operator-spe
+                                      x
+Esc Calls List   Enter Raw   Space Compare   F1 Help   F2 SDP   F3 RTP   F4 Exte
+</code>
+==== Asterisk Manager traffic monitor ====
+Use the "ngrep" tool :
+<code>
+ngrep
+</code>
+<code>
+ngrep -d lo -s 1500 port 5038 -T
+</code>
 ==== Monitor memory/CPU ====
@@ Line 259: / Line 317: @@
 </DiagnosticMessages>
 </code>
+==== Set the right TimeZone ====
+Install the NTP package to synchronize your server to the world's time.
+<code>
+#timedatectl set-timezone America/New_York
+</code>
+or, for french servers,
+<code>
+#timedatectl set-timezone Europe/Paris
+</code>
+or automatically,
+<code>
+#dpkg-reconfigure tzdata
+</code>
+==== Monitor the file descriptors ====
+List the file descriptors used by a process :
+<code>
+# ls -l /proc/[PID]/fd
+</code>
+==== Coredump generators ====
+Generate the threads stacks or a coredump file for the process (voximald) :
+<code>
+gdb -ex "thread apply all bt" --batch /usr/sbin/voximald $(pidof voximald) > /var/log/voximal/backtrace-voximald$(date +%s).txt
+gdb /usr/sbin/voximald $(pidof voximald) -ex "gcore /tmp/toto.core" --batch
+</code>