{"id":159,"date":"2021-03-22T09:32:45","date_gmt":"2021-03-22T09:32:45","guid":{"rendered":"http:\/\/blog.successionua.com\/?p=159"},"modified":"2021-03-22T09:32:45","modified_gmt":"2021-03-22T09:32:45","slug":"changing-hostname-on-rhel","status":"publish","type":"post","link":"https:\/\/geckich.space\/?p=159","title":{"rendered":"Changing hostname on RHEL"},"content":{"rendered":"
\n

For RHEL 6:<\/h2>\n

1. Change the HOSTNAME<\/span>\u00a0line in\u00a0\/etc\/sysconfig\/network<\/span><\/p>\n

2. Change the hostname (FQDN and alias) in\u00a0\/etc\/hosts<\/span><\/p>\n

3. Run\u00a0\/bin\/hostname new_hostname<\/span>\u00a0for the hostname change to take effect immediately.<\/p>\n

4. Run\u00a0\/sbin\/service syslog restart<\/span>\u00a0for\u00a0syslog<\/span>\u00a0to log using the new hostname.<\/p>\n

A reboot is not required to change the system hostname.<\/p>\n<\/div>\n\n\n

For RHEL 7:<\/h2>\n\n\n\n

Method 1 : hostnamectl<\/h3>\n\n\n\n

Get the current hostname of the system :<\/p>\n\n\n\n

hostnamectl status<\/pre>\n\n\n\n
\n
Static hostname: localhost.localdomain
Icon name: computer
Chassis: n\/a
Machine ID: 55cc1c57c7f24ed0b0d352648024cea6
Boot ID: a12ec8e04e6b4534841d14dc8425e38c
Virtualization: vmware
Operating System: CentOS Linux 7 (Core)
CPE OS Name: cpe:\/o:centos:centos:7
Kernel: Linux 3.10.0-123.el7.x86_64
Architecture: x86_64<\/code><\/pre>\n\n\n\n
To set new hostname (butterfly) for the machine :<\/p>\n\n\n\n
hostnamectl set-hostname butterfly<\/pre>\n\n\n\n
Re-login and verify the new hostname :<\/p>\n\n\n\n
hostnamectl<\/pre>\n\n\n\n
Static hostname: butterfly\nPretty hostname: Geeks LAB\nIcon name: computer\nChassis: n\/a\nMachine ID: 55cc1c57c7f24ed0b0d352648024cea6\nBoot ID: a12ec8e04e6b4534841d14dc8425e38c\nVirtualization: vmware\nOperating System: CentOS Linux 7 (Core)\nCPE OS Name: cpe:\/o:centos:centos:7\nKernel: Linux 3.10.0-123.el7.x86_64\nArchitecture: x86_64<\/pre>\n\n\n\n
Method 2 : nmcli<\/h3>\n\n\n\n
Get the current hostname :<\/p>\n\n\n\n
nmcli general hostname<\/pre>\n\n\n\n
localhost.localdomain<\/pre>\n\n\n\n
To change the hostname to butterfly :<\/p>\n\n\n\n
nmcli general hostname butterfly<\/pre>\n\n\n\n
We need to restart the systemd-hostnamed service for the changes to take effect :<\/p>\n\n\n\n
service systemd-hostnamed restart<\/pre>\n\n\n\n
Re-login and verify the hostname change :<\/p>\n\n\n\n
hostname<\/pre>\n\n\n\n
butterfly<\/pre>\n\n\n\n
Method 3 : nmtui<\/h3>\n\n\n\n
We can also change the hostname using the nmtui tool :<\/p>\n\n\n\n
nmtui<\/pre>\n\n\n\n
Select the option to \u201cset the hostname\u201d and hit enter<\/p>\n\n\n\n
\"change<\/figure>\n\n\n\n
Set the hostname<\/p>\n\n\n\n
Restart the systemd-hostnamed service for the changes to take effect.<\/p>\n\n\n\n
service systemd-hostnamed restart<\/pre>\n\n\n\n
Re-login and verify the hostname change.<\/p>\n\n\n\n
Method 4 : Edit \/etc\/hostname<\/h3>\n\n\n\n
cat \/etc\/hostname<\/pre>\n\n\n\n
localhost.localdomain<\/pre>\n\n\n\n
To change the hostname to \u201cbutterfly\u201d, replace the content of the \/etc\/hostname file with \u201cbutterfly\u201d<\/p>\n\n\n\n
echo \"butterfly\" > \/etc\/hostname<\/pre>\n\n\n\n
cat \/etc\/hostname<\/pre>\n\n\n\n
butterfly<\/pre>\n\n\n\n
Restart the system and verify.<\/p>\n\n\n\n
shutdown -r now<\/pre>\n<\/div><\/div>\n\n\n\n
Sources:<\/p>\n\n\n\n
  1. https:\/\/www.thegeekdiary.com\/centos-rhel-7-how-to-change-set-hostname\/<\/li>
  2. https:\/\/my-hlam.livejournal.com\/34233.html?utm_source=3userpost<\/li><\/ol>\n","protected":false},"excerpt":{"rendered":"
    For RHEL 6: 1. Change the HOSTNAME\u00a0line in\u00a0\/etc\/sysconfig\/network 2. Change the hostname (FQDN and alias) in\u00a0\/etc\/hosts 3. Run\u00a0\/bin\/hostname new_hostname\u00a0for the hostname change to take effect immediately. 4. Run\u00a0\/sbin\/service syslog restart\u00a0for\u00a0syslog\u00a0to log using the new hostname. A reboot is not required to change the system hostname. For RHEL 7: Method 1 : hostnamectl Get the current … Continue reading Changing hostname on RHEL<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[10,7],"tags":[25,154,48,66],"class_list":["post-159","post","type-post","status-publish","format-standard","hentry","category-linux","category-sysadmin","tag-console","tag-hostname","tag-linux","tag-rhel"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/geckich.space\/index.php?rest_route=\/wp\/v2\/posts\/159","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/geckich.space\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/geckich.space\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/geckich.space\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/geckich.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=159"}],"version-history":[{"count":4,"href":"https:\/\/geckich.space\/index.php?rest_route=\/wp\/v2\/posts\/159\/revisions"}],"predecessor-version":[{"id":1174,"href":"https:\/\/geckich.space\/index.php?rest_route=\/wp\/v2\/posts\/159\/revisions\/1174"}],"wp:attachment":[{"href":"https:\/\/geckich.space\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=159"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/geckich.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=159"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/geckich.space\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}