Debian upgrade from 7 to 8 syslog-ng.service start request repeated too quickly, refusing to start

You have upgraded from Debian 7 to Debian 8 and you are usign syslog-ng.

You will be in a little bit in trouble with syslog-ng

You can check this with systemctl status syslog-ng.service

syslog-ng.service start request repeated too quickly, refusing to start

syslog-ng service is not starting.

Check your local config file search after ” unix-stream(“/dev/log”);”

People with custom syslog-ng configurations will most likely face upgrade problems due to the unix socket type mismatch between systemd and syslog-ng old configuration file:

  • systemd creates /dev/log as unix-dgram
  • syslog-ng < 3.2.5 expected /dev/log to be unix-stream (configuration file)

If you use ‘unix-stream (“/dev/log”)’ in one of your log messages sources, you will need to manually change it to ‘unix-dgram (“/dev/log”)’.

Found here

https://unix.stackexchange.com/questions/202044/syslog-ng-service-not-starting-with-systemd-but-command-works-fine

 

 

WCCPv2 and Squid-cache v3.1, a nice couple.

CCIE, the beginning!

WCCP protocol can be much more interesting than the two commands needed for the CCIE exam. In this lab we will deploy a basic end-to-end solution using IOS 15.2S and the well known open-source solution Squid v3.1 as the content engine.

WCCP version2 is deployed in the lab.

1-Topology

wccpv2top1

WCCP enables the router to transparently intercept client traffic destined to Internet and redirect it to a local content engine. Client browsers doesn’t point to the content engine as proxy.

Cisco and the content engine communicate through unidirectional point-to-point tunnels (either layer2 or GRE ).

2-WCCPv2 Interception

wccpv2top2

The tunnel interfaces are automatically created in order to process outgoing GRE-encapsulated traffic for WCCP.
Short definitions of some related concepts:

Forward proxy Filter access to Internet and reduces BW related to Internet static resources like regular updates, big file downloads…
Reverse proxy Allows external users (ex: on Internet) to access internal servers. Generally supports…

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