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author | Rainer Gerhards <rgerhards@adiscon.com> | 2009-07-09 09:42:32 +0200 |
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committer | Rainer Gerhards <rgerhards@adiscon.com> | 2009-07-09 09:42:32 +0200 |
commit | 3e4aa167eed33a37163446feb2f28efe3e4582d5 (patch) | |
tree | b309d9fe6ab1c33f2e9df8512cf0216e2ce86271 /doc/troubleshoot.html | |
parent | e2c9493b0d832078e181a6bce3373850df27d204 (diff) | |
parent | 9f286c0c4c21128c66305166ae379d3f7b07f673 (diff) | |
download | rsyslog-3e4aa167eed33a37163446feb2f28efe3e4582d5.tar.gz rsyslog-3e4aa167eed33a37163446feb2f28efe3e4582d5.tar.xz rsyslog-3e4aa167eed33a37163446feb2f28efe3e4582d5.zip |
Merge branch 'master' into udpspoof
Conflicts:
tools/omfwd.c
Diffstat (limited to 'doc/troubleshoot.html')
-rw-r--r-- | doc/troubleshoot.html | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/doc/troubleshoot.html b/doc/troubleshoot.html index e655c2ef..a8855fd4 100644 --- a/doc/troubleshoot.html +++ b/doc/troubleshoot.html @@ -18,7 +18,14 @@ is a rsyslog-doc package, that often needs to be installed separately. <p><b>Malformed Messages and Message Properties</b> <p>A common trouble source are <a href="syslog_parsing.html">ill-formed syslog messages</a>, which lead to to all sorts of interesting problems, including malformed hostnames and dates. -Read the quoted guide to find relief. +Read the quoted guide to find relief. A common symptom is that the %HOSTNAME% property is +used for generating dynafile names, but some glibberish shows up. This is caused by the +malformed syslog messages, so be sure to read the +<a href="syslog_parsing.html">guide</a> if you face that problem. Just let me add that the +common work-around is to use %FROMHOST% or %FROMHOST-IP% instead. These do not take the +hostname from the message, but rather use the host that sent the message (taken from +the socket layer). Of course, this does not work over NAT or relay chains, where the +only cure is to make sure senders emit well-formed messages. <p><b>Configuration Problems</b> <p>Rsyslog 3.21.1 and above has been enhanced to support extended configuration checking. It offers a special command line switch (-N1) that puts it into "config verfication mode". @@ -28,6 +35,15 @@ mode can be used in parallel to a running instance of rsyslogd. <p><b><i>/path/to/rsyslogd -f/path/to/config-file -N1</i></b> <p>You should also specify other options you usually give (like -c3 and whatever else). Any problems experienced are reported to stderr [aka "your screen" (if not redirected)]. +<p><b>Configuration Graphs</b> +<p>Starting with rsyslog 4.3.1, the +"<a href="rsconf1_generateconfiggraph.html">$GenerateConfigGraph</a>" +command is supported, a very valuable troubleshooting tool. It permits to +generate a graph of how rsyslogd understood its configuration file. It is assumed that +many configuration issues can easily be detected just by looking at the configuration graph. +Full details of how to generate the graphs, and what to look for can be found in the +"<a href="rsconf1_generateconfiggraph.html">$GenerateConfigGraph</a>" +manual page. <p><b>Asking for Help</b> <p>If you can't find the answer yourself, you should look at these places for community help. |