WorkingWithRHEL7 - Revision history

Stephane GERARD at 20:26, 24 March 2016

2016-03-24T20:26:12Z

← Older revision		Revision as of 20:26, 24 March 2016
Line 1:		Line 1:

	=== Getting rid of firewalld and coming back to iptables ===		== Getting rid of firewalld and coming back to iptables ==
	Here are the magic commands :		Here are the magic commands :
	<pre>		<pre>
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	</pre>		</pre>

	=== Replacing NetworkManager by network ===		== Replacing NetworkManager by network ==
	First, check if there is the '''GATEWAY''' parameter in the ifcfg-ethX of the NIC. (GATEWAY0 is not working without NM)		First, check if there is the '''GATEWAY''' parameter in the ifcfg-ethX of the NIC. (GATEWAY0 is not working without NM)
	Then, type these commands :		Then, type these commands :
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	</pre>		</pre>

	=== Adoption of Predictable Network Interface Names ===		== Adoption of Predictable Network Interface Names ==
	Names of NICs will change. To prepare yourself to the new naming rules, please read these documents :		Names of NICs will change. To prepare yourself to the new naming rules, please read these documents :
	*http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/		*http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/
	*http://blog.laimbock.com/2014/11/22/systemd-understanding-predictable-network-interface-names/		*http://blog.laimbock.com/2014/11/22/systemd-understanding-predictable-network-interface-names/

	=== Default filesystem : xfs ===		== Default filesystem : xfs ==
	RHEL7 adopts XFS as the default filesystem. It might generates troubles with our Quattor scdb -> check our filesystem layout templates.		RHEL7 adopts XFS as the default filesystem. It might generates troubles with our Quattor scdb -> check our filesystem layout templates.

	=== Transition from SysVinit to Systemd ===		== Transition from SysVinit to Systemd ==
	I find this [https://fedoraproject.org/wiki/SysVinit_to_Systemd_Cheatsheet link] useful.		I find this [https://fedoraproject.org/wiki/SysVinit_to_Systemd_Cheatsheet link] useful.

	Here are some useful commands :		Here are some useful commands :

	==== List types of unit ====		=== List types of unit ===
	<pre>		<pre>
	systemctl -t help		systemctl -t help
	</pre>		</pre>
	==== List units of a certain type ====		=== List units of a certain type ===
	<pre>		<pre>
	systemctl list-units --type=[unit_name]		systemctl list-units --type=[unit_name]
	</pre>		</pre>
	==== List of services ====		=== List of services ===
	<pre>		<pre>
	systemctl list-units --type=service		systemctl list-units --type=service
	</pre>		</pre>
	==== Check status of services ====		=== Check status of services ===
	<pre>		<pre>
	systemctl status [service_name]		systemctl status [service_name]
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	systemctl is-active [service_name]		systemctl is-active [service_name]
	</pre>		</pre>
	==== Stop/start/restart service ====		=== Stop/start/restart service ===
	<pre>		<pre>
	systemctl start [service_name]		systemctl start [service_name]
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	systemctl restart [service_name]		systemctl restart [service_name]
	</pre>		</pre>
	==== Enable/disable at boot time ====		=== Enable/disable at boot time ===
	<pre>		<pre>
	systemctl enable [service_name]		systemctl enable [service_name]

Stephane GERARD: /* Transition from SysVinit to Systemd */

2016-03-24T20:24:08Z

Transition from SysVinit to Systemd

← Older revision		Revision as of 20:24, 24 March 2016
Line 67:		Line 67:
	systemctl stop [service_name]		systemctl stop [service_name]
	systemctl restart [service_name]		systemctl restart [service_name]
			</pre>
			==== Enable/disable at boot time ====
			<pre>
			systemctl enable [service_name]
			systemctl disable [service_name]
	</pre>		</pre>


	{{TracNotice\|{{PAGENAME}}}}		{{TracNotice\|{{PAGENAME}}}}

Stephane GERARD: /* Transition from SysVinit to Systemd */

2016-03-24T20:20:38Z

Transition from SysVinit to Systemd

@@ Line 41: / Line 41: @@
 Here are some useful commands :
-* List types of unit
+==== List types of unit ====
-* Check status of services
+<pre>
 {{TracNotice|{{PAGENAME}}}}

Stephane GERARD: /* Transition from SysVinit to Systemd */

2016-03-24T20:06:55Z

Transition from SysVinit to Systemd

← Older revision		Revision as of 20:06, 24 March 2016
Line 38:		Line 38:
	=== Transition from SysVinit to Systemd ===		=== Transition from SysVinit to Systemd ===
	I find this [https://fedoraproject.org/wiki/SysVinit_to_Systemd_Cheatsheet link] useful.		I find this [https://fedoraproject.org/wiki/SysVinit_to_Systemd_Cheatsheet link] useful.

			Here are some useful commands :

			* List types of unit
			* Check status of services

	{{TracNotice\|{{PAGENAME}}}}		{{TracNotice\|{{PAGENAME}}}}

SAMIR AMARY samary@ulb.ac.be: /* Replacing NetworkManager by network */

2015-11-18T12:34:41Z

Replacing NetworkManager by network

← Older revision		Revision as of 12:34, 18 November 2015
Line 17:		Line 17:

	=== Replacing NetworkManager by network ===		=== Replacing NetworkManager by network ===
	~~Type~~ these commands :		First, check if there is the '''GATEWAY''' parameter in the ifcfg-ethX of the NIC. (GATEWAY0 is not working without NM)
			Then, type these commands :
	<pre>		<pre>
	systemctl stop NetworkManager		systemctl stop NetworkManager

STEPHANE GERARD stgerard@vub.ac.be at 12:37, 19 October 2015

2015-10-19T12:37:17Z

← Older revision		Revision as of 12:37, 19 October 2015
Line 35:		Line 35:
	RHEL7 adopts XFS as the default filesystem. It might generates troubles with our Quattor scdb -> check our filesystem layout templates.		RHEL7 adopts XFS as the default filesystem. It might generates troubles with our Quattor scdb -> check our filesystem layout templates.

			=== Transition from SysVinit to Systemd ===
			I find this [https://fedoraproject.org/wiki/SysVinit_to_Systemd_Cheatsheet link] useful.

	{{TracNotice\|{{PAGENAME}}}}		{{TracNotice\|{{PAGENAME}}}}

Maintenance script: Created page with " === Getting rid of firewalld and coming back to iptables === Here are the magic commands :

 systemctl stop firewalld
 systemctl disable firewalld
 yum remove firewall..."

2015-08-26T12:29:32Z

Created page with " === Getting rid of firewalld and coming back to iptables === Here are the magic commands : <pre> systemctl stop firewalld systemctl disable firewalld yum remove firewall..."

New page

=== Getting rid of firewalld and coming back to iptables ===
Here are the magic commands :
<pre>
systemctl stop firewalld
systemctl disable firewalld
yum remove firewalld
yum install iptables-services
systemctl enable iptables.service
systemctl enable ip6tables.service
</pre>
Don't forget to configure SSH with system-config-firewall-tui. And after that :
<pre>
systemctl start iptables.service
systemctl start ip6tables.service
</pre>

=== Replacing NetworkManager by network ===
Type these commands :
<pre>
systemctl stop NetworkManager
systemctl disable NetworkManager
</pre>
And now, we can restart network :
<pre>
service network restart
</pre>

=== Adoption of Predictable Network Interface Names ===
Names of NICs will change. To prepare yourself to the new naming rules, please read these documents :
*http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/
*http://blog.laimbock.com/2014/11/22/systemd-understanding-predictable-network-interface-names/

=== Default filesystem : xfs ===
RHEL7 adopts XFS as the default filesystem. It might generates troubles with our Quattor scdb -> check our filesystem layout templates.

{{TracNotice|{{PAGENAME}}}}

WorkingWithRHEL7 - Revision history

Stephane GERARD at 20:26, 24 March 2016

Stephane GERARD: /* Transition from SysVinit to Systemd */

Stephane GERARD: /* Transition from SysVinit to Systemd */

Stephane GERARD: /* Transition from SysVinit to Systemd */

SAMIR AMARY samary@ulb.ac.be: /* Replacing NetworkManager by network */

STEPHANE GERARD stgerard@vub.ac.be at 12:37, 19 October 2015

Maintenance script: Created page with " === Getting rid of firewalld and coming back to iptables === Here are the magic commands : systemctl stop firewalld systemctl disable firewalld yum remove firewall..."

Maintenance script: Created page with " === Getting rid of firewalld and coming back to iptables === Here are the magic commands :
systemctl stop firewalld systemctl disable firewalld yum remove firewall..."