CentOS6 - Revision history

Leaky: /* Really flushing nscd cache */ added kickstart network info

2015-02-11T23:18:33Z

‎Really flushing nscd cache: added kickstart network info

Leaky: /* Disable mingetty on extra tty */

2014-11-18T23:30:48Z

‎Disable mingetty on extra tty

Leaky: nscd cache

2014-09-23T11:28:43Z

nscd cache

Leaky: Added rndc info

2014-08-01T21:22:52Z

Added rndc info

Leaky: added tty info

2014-07-30T20:45:17Z

added tty info

Leaky: moved Linux to CentOS6: More relevant to CentOS 6 as there's a separate C7 page

2014-07-30T20:37:41Z

moved Linux to CentOS6: More relevant to CentOS 6 as there's a separate C7 page

Leaky: Rate-limiting for rsyslog

2013-09-07T20:42:38Z

Rate-limiting for rsyslog

New page

== Adjust rate-limiting for rsyslog ==

These instructions are for rsyslog 5.8.10 that comes with CentOS 6

/etc/rsyslog.conf

# Disable rate-limiting completely
$SystemLogRateLimitInterval 0

or

# Set the rate limiting to 500 messages in 5s
$SystemLogRateLimitInterval 5
$SystemLogRateLimitBurst 500

← Older revision		Revision as of 23:18, 11 February 2015
Line 58:		Line 58:
	# nscd --invalidate=passwd		# nscd --invalidate=passwd
	# nscd --invalidate=group		# nscd --invalidate=group
		+
		+	== Kickstart config IPv4 and IPv6 ==
		+
		+	Two alternatives for specifying both IPv4 and IPv6 details in the kickstart config
		+
		+	1. All the details on a single line and using --ipv6 and --ipv6gateway to specify the IPv6 details
		+
		+	network --device eth0 --bootproto static --ip=192.168.122.91
		+	--netmask=255.255.255.0 --gateway=192.168.122.1 --nameserver=192.168.122.1
		+	--hostname=centos6b-122.bocks.com --ipv6=2a02:af8:1000:82:8000::91/65
		+	--ipv6gateway=2a02:af8:1000:82:8000::1
		+
		+	2. Two separate network lines specifying the same device
		+
		+	network --device eth0 --bootproto static --ip=192.168.122.91
		+	--netmask=255.255.255.0 --gateway=192.168.122.1 --nameserver=192.168.122.1
		+	--hostname=centos6b-122.bocks.com
		+	network --device eth0 --ipv6=2a02:af8:1000:82:8000::91/65
		+	--ipv6gateway=2a02:af8:1000:82:8000::1
		+
		+	Both options seem to work in CentOS 6.6 although there are some webpages where people have said ipv6gateway doesn't work.

@@ Line 16: / Line 16: @@
 == Disable mingetty on extra tty ==
-Edit '''/etc/init/start-ttys.conf''' so that
+Edit '''/etc/sysconfig/int''' so that
-  env ACTIVE_CONSOLES=/dev/tty[1-6]
+  ACTIVE_CONSOLES=/dev/tty[1-6]
 becomes
-  env ACTIVE_CONSOLES=/dev/tty[1-2]
+  ACTIVE_CONSOLES=/dev/tty[1-2]
 And then to stop the ones that are already running without rebooting:

← Older revision		Revision as of 11:28, 23 September 2014
Line 43:		Line 43:
	# ls -l /etc/rndc.key		# ls -l /etc/rndc.key
	-rw-r----- 1 root named 77 Jan 13 2014 /etc/rndc.key		-rw-r----- 1 root named 77 Jan 13 2014 /etc/rndc.key
		+
		+	== Really flushing nscd cache ==
		+
		+	Originally copied from http://stijn.tintel.eu/blog/2012/05/10/how-to-really-flush-the-various-nscd-caches
		+
		+	The nscd caches are saved to disk, usually /var/db/nscd
		+
		+	[root@dev402 ~]# ls /var/db/nscd/
		+	group hosts netgroup passwd services
		+
		+	When you stop nscd, these files will just stay there, so restarting really doesn't flush your nscd caches.
		+	What you need to do is use the --invalidate option, e.g.:
		+
		+	# nscd --invalidate=passwd
		+	# nscd --invalidate=group

← Older revision		Revision as of 21:22, 1 August 2014
Line 30:		Line 30:

	Then repeat for the other ttys.		Then repeat for the other ttys.
		+
		+	== named 'rndc status' not working ==
		+
		+	[root@server6122 ~]# rndc status
		+	rndc: connect failed: 127.0.0.1#953: connection refused
		+
		+	Check:
		+
		+	* Portreserve service may interfere with bind
		+	# service portreserve stop; chkconfig portreserve off
		+	* Permissions on /etc/rndc.key - group should be named, not root!
		+	# ls -l /etc/rndc.key
		+	-rw-r----- 1 root named 77 Jan 13 2014 /etc/rndc.key

← Older revision		Revision as of 20:45, 30 July 2014
Line 13:		Line 13:
	$SystemLogRateLimitInterval 5		$SystemLogRateLimitInterval 5
	$SystemLogRateLimitBurst 500		$SystemLogRateLimitBurst 500
		+
		+	== Disable mingetty on extra tty ==
		+
		+	Edit '''/etc/init/start-ttys.conf''' so that
		+
		+	env ACTIVE_CONSOLES=/dev/tty[1-6]
		+
		+	becomes
		+
		+	env ACTIVE_CONSOLES=/dev/tty[1-2]
		+
		+	And then to stop the ones that are already running without rebooting:
		+
		+	# initctl stop tty TTY=/dev/tty6
		+	tty stop/waiting
		+
		+	Then repeat for the other ttys.

← Older revision	Revision as of 20:37, 30 July 2014
(No difference)