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I'm debugging an issue where I think my server is spamming other servers because it is infected but all my logs stop in august last year, and rsyslog is missing from the system /etc/rsyslog.d still exists and clearly it was writing logs once but there are no new logs being generated for /var/log/mail.log or /var/log/messages

but running

rsyslog

results in command not found, should I run:

apt-get install rsyslog 

and then

service rsyslog start

and has any one seen anything like this before?

  • try rsyslogd. – Manuel Faux Jul 21 '15 at 10:13
  • it says command not found and unrecognized service – arcanine Jul 21 '15 at 10:23
  • which rsyslogd ? – neuron Jul 21 '15 at 10:24
  • no output is given – arcanine Jul 21 '15 at 10:27
  • What is the output of ls -l /usr/sbin/rsyslogd? – mjturner Jul 21 '15 at 10:54
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Open the terminal and execute the command

# sudo add-apt-repository ppa:adiscon/v8-stable 

Now install rsyslog

# sudo apt-get install rsyslog

to check rsyslog version,

# rsyslogd -v
rsyslogd 7.4.4, compiled with:
    FEATURE_REGEXP:             Yes
    FEATURE_LARGEFILE:          No
    GSSAPI Kerberos 5 support:      Yes
    FEATURE_DEBUG (debug build, slow code): No
    32bit Atomic operations supported:  Yes
    64bit Atomic operations supported:  Yes
    Runtime Instrumentation (slow code):    No
    uuid support:               Yes

Also check whether your rsyslog running

  • I wouldn't suggest installing rsyslog from a PPA - that's unnecessary. If the original poster doesn't have it installed, they can reinstall from the official Ubuntu repositories. – mjturner Jul 21 '15 at 15:36
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I've re-installed it using

apt-get install rsyslog 

and logs seem to be filling up again, odd that it seems to have gone missing in the first place, it's clearly been on the system before

  • Lots of malicious attacks involve disabling logging or redirecting logs to /dev/null. Its an early step after compromising a system, in order to avoid an audible trail. You might want to be suspicious of the system on the whole IMHO. – 111--- Jul 21 '15 at 17:51
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Could be that You are running systemd.

Look in /var/log/README

You are running a systemd-based OS where traditional syslog has been
replaced with the Journal.

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