{"id":1465,"date":"2015-03-26T23:19:30","date_gmt":"2015-03-26T17:19:30","guid":{"rendered":"http:\/\/techsatwork.com\/blog\/?p=1465"},"modified":"2016-01-07T11:31:02","modified_gmt":"2016-01-07T05:31:02","slug":"configuring-network-redhat-enterprise-linux-server","status":"publish","type":"post","link":"https:\/\/techsatwork.com\/?p=1465","title":{"rendered":"Configuring network on RedHat Enterprise Linux Server"},"content":{"rendered":"

Here is\u00c2\u00a0 a quick snippet of how to configure network for Red Hat Enterpise Linux for a server.<\/p>\n

Here I am trying to configure eth0\u00c2\u00a0 <\/b>to connect to the network.
\nFirst we need to ensure that network interface is turned on :<\/p>\n

vi \/etc\/sysconfig\/network-scripts\/ifcfg-eth0<\/strong><\/p>\n

Find the line that says ONBOOT and ensure it says ONBOOT=yes<\/b> \u00c2\u00a0 If its no<\/b> then change it to yes<\/b>\u00e2\u20ac\u00a6so it will come online when rebooted.<\/p>\n

Now lets start the configuration.<\/p>\n

Type setup<\/b><\/p>\n

select network configuration<\/p>\n

\"Screen<\/a><\/p>\n

\u00c2\u00a0<\/b><\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

select device configuration<\/p>\n

\"Screen<\/a><\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

select eth0<\/p>\n

Normally servers get static ip addresses and if thats the case then remove DHCP .
\nFill in the gateway, net mask, DNS information<\/p>\n

\"Screen<\/a><\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

Click OK and Save. Then select DNS Configuration . Type in all your DNS information there:<\/p>\n

\"Screen<\/a><\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

Click Save and Save & Quit\u00c2\u00a0 and Quit.\u00c2\u00a0 This will exit the setup screen.
\nNow that we have configured the network, we got couple of more things to do.
\nLets now setup the host files<\/p>\n

type\u00c2\u00a0 vi \/etc\/hosts<\/b><\/p>\n

add a line<\/p>\n

<ipaddress> \u00c2\u00a0 <hostname>\u00c2\u00a0 <hostname.domainname><\/strong><\/p>\n

eg:<\/p>\n

192.1.50.1\u00c2\u00a0 redhat1 \u00c2\u00a0 redhat1.techsatwork.com<\/p>\n

Save this file.
\nTime to restart the network services<\/p>\n

type \u00c2\u00a0service network restart\u00c2\u00a0<\/b><\/p>\n

Ensure that all the services and network (eth0 in this case) started OK
\nNow lets see if the eth0 is all connected and a link is established<\/p>\n

type ethtool eth0
\n<\/strong><\/p>\n

and look for Link Detected\u00c2\u00a0: Yes<\/p>\n

If you see Yes then that means you are now connected to the network.<\/p>\n

Try pinging other servers on the network . Your server should now be connected to internet. One other thing you can optionally do is to stop the firewall. To do that:<\/p>\n

type \u00c2\u00a0service iptables save<\/strong>
\ntype service iptables stop<\/strong>
\ntype chkconfig iptables off<\/strong><\/p>\n

 <\/p>\n

I hope this helps. \u00c2\u00a0Please test these steps on a non-prod environment first.<\/p>\n

**I do not guarantee or accept any consequences from these steps in any circumstances<\/sub><\/p>\n","protected":false},"excerpt":{"rendered":"

Here is\u00c2\u00a0 a quick snippet of how to configure network for Red Hat Enterpise Linux for a server. Here I am trying to configure eth0\u00c2\u00a0 to connect to the network. First we need to ensure that network interface is turned on : vi \/etc\/sysconfig\/network-scripts\/ifcfg-eth0 Find the line that says ONBOOT and ensure it says ONBOOT=yes […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-container-style":"default","site-container-layout":"default","site-sidebar-layout":"default","site-transparent-header":"default","disable-article-header":"default","disable-site-header":"default","disable-site-footer":"default","disable-content-area-spacing":"default","footnotes":""},"categories":[3],"tags":[908,910,909,907],"class_list":["post-1465","post","type-post","status-publish","format-standard","hentry","category-db2","tag-configure-network","tag-linux-network","tag-redhat-network","tag-redhead-network"],"_links":{"self":[{"href":"https:\/\/techsatwork.com\/index.php?rest_route=\/wp\/v2\/posts\/1465","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techsatwork.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techsatwork.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techsatwork.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/techsatwork.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1465"}],"version-history":[{"count":3,"href":"https:\/\/techsatwork.com\/index.php?rest_route=\/wp\/v2\/posts\/1465\/revisions"}],"predecessor-version":[{"id":1472,"href":"https:\/\/techsatwork.com\/index.php?rest_route=\/wp\/v2\/posts\/1465\/revisions\/1472"}],"wp:attachment":[{"href":"https:\/\/techsatwork.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1465"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techsatwork.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1465"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techsatwork.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1465"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}