How to Upgrade CentOS 7 to CentOS 8
!Warning!
- "yum" will be uninstalled after this update, you will need to use dnf to update your VPS further.
- Run the commands listed below only after taking a backup of your data!
First, install the EPEL repository,
yum install epel-release -ySample output:
Importing GPG key 0xF4A80EB5:
Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>"
Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5
Package : centos-release-7-6.1810.2.el7.centos.x86_64 (@anaconda)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : epel-release-7-11.noarch 1/1
Verifying : epel-release-7-11.noarch 1/1
Installed:
epel-release.noarch 0:7-11
Complete!To install yum utils.
yum install yum-utilsSample output:
Total download size: 862 k
Installed size: 4.3 M
Is this ok [y/d/N]: y
Downloading packages:
(1/4): python-chardet-2.2.1-3.el7.noarch.rpm | 227 kB 00:00
(2/4): libxml2-python-2.9.1-6.el7_2.3.x86_64.rpm | 247 kB 00:00
(3/4): python-kitchen-1.1.1-5.el7.noarch.rpm | 267 kB 00:00
(4/4): yum-utils-1.1.31-52.el7.noarch.rpm | 121 kB 00:00
--------------------------------------------------------------------------------
Total 5.4 MB/s | 862 kB 00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : python-chardet-2.2.1-3.el7.noarch 1/4
Installing : python-kitchen-1.1.1-5.el7.noarch 2/4
Installing : libxml2-python-2.9.1-6.el7_2.3.x86_64 3/4
Installing : yum-utils-1.1.31-52.el7.noarch 4/4
Verifying : python-kitchen-1.1.1-5.el7.noarch 1/4
Verifying : yum-utils-1.1.31-52.el7.noarch 2/4
Verifying : libxml2-python-2.9.1-6.el7_2.3.x86_64 3/4
Verifying : python-chardet-2.2.1-3.el7.noarch 4/4
Installed:
yum-utils.noarch 0:1.1.31-52.el7
Dependency Installed:
libxml2-python.x86_64 0:2.9.1-6.el7_2.3 python-chardet.noarch 0:2.2.1-3.el7
python-kitchen.noarch 0:1.1.1-5.el7
Complete!To configure RPM packages.
yum install rpmconf
rpmconf -aSample output:
Total download size: 21 k
Installed size: 45 k
Is this ok [y/d/N]: y
Downloading packages:
warning: /var/cache/yum/x86_64/7/epel/packages/rpmconf-0.3.4-1.el7.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID 352c64e5: NOKEY
Public key for rpmconf-0.3.4-1.el7.noarch.rpm is not installed
rpmconf-0.3.4-1.el7.noarch.rpm | 21 kB 00:00
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
Importing GPG key 0x352C64E5:
Userid : "Fedora EPEL (7) <epel@fedoraproject.org>"
Fingerprint: 91e9 7d7c 4a5e 96f1 7f3e 888f 6a2f aea2 352c 64e5
Package : epel-release-7-11.noarch (@extras)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
Is this ok [y/N]: y
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : rpmconf-0.3.4-1.el7.noarch 1/1
Verifying : rpmconf-0.3.4-1.el7.noarch 1/1
Installed:
rpmconf.noarch 0:0.3.4-1.el7
Complete!After clean all packages which is not require.
package-cleanup --leavesSample output:
Loaded plugins: fastestmirror
libsysfs-2.1.0-16.el7.x86_64package-cleanup --orphansSample output:
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.23media.com
* epel: mirror.de.leaseweb.net
* extras: ftp.rz.uni-frankfurt.de
* updates: mirror.fra10.de.leaseweb.net
GeoIP-1.5.0-13.el7.x86_64
NetworkManager-1.12.0-6.el7.x86_64
NetworkManager-libnm-1.12.0-6.el7.x86_64
NetworkManager-team-1.12.0-6.el7.x86_64
NetworkManager-tui-1.12.0-6.el7.x86_64
alsa-lib-1.1.6-2.el7.x86_64
audit-2.8.4-4.el7.x86_64
audit-libs-2.8.4-4.el7.x86_64
bash-4.2.46-31.el7.x86_64
bind-libs-lite-9.9.4-72.el7.x86_64
bind-license-9.9.4-72.el7.noarch
binutils-2.27-34.base.el7.x86_64
biosdevname-0.7.3-1.el7.x86_64
centos-release-7-6.1810.2.el7.centos.x86_64
coreutils-8.22-23.el7.x86_64
cronie-1.4.11-19.el7.x86_64
cronie-anacron-1.4.11-19.el7.x86_64
cryptsetup-libs-2.0.3-3.el7.x86_64
curl-7.29.0-51.el7.x86_64
dbus-1.10.24-12.el7.x86_64
dbus-libs-1.10.24-12.el7.x86_64
device-mapper-1.02.149-8.el7.x86_64
device-mapper-libs-1.02.149-8.el7.x86_64
dhclient-4.2.5-68.el7.centos.1.x86_64
dhcp-common-4.2.5-68.el7.centos.1.x86_64
dhcp-libs-4.2.5-68.el7.centos.1.x86_64
selinux-policy-targeted-3.13.1-229.el7.noarch
sg3_utils-1.37-17.el7.x86_64
sg3_utils-libs-1.37-17.el7.x86_64
shadow-utils-4.1.5.1-25.el7.x86_64
sudo-1.8.23-3.el7.x86_64
systemd-219-62.el7.x86_64
systemd-libs-219-62.el7.x86_64
systemd-sysv-219-62.el7.x86_64
teamd-1.27-5.el7.x86_64
tuned-2.10.0-6.el7.noarch
tzdata-2018e-3.el7.noarch
util-linux-2.23.2-59.el7.x86_64
vim-minimal-7.4.160-5.el7.x86_64
xfsprogs-4.5.0-18.el7.x86_64
yum-3.4.3-161.el7.centos.noarch
yum-plugin-fastestmirror-1.1.31-50.el7.noarchTo install dnf in CentOS 7.
yum install dnfSample output:
Installed:
dnf.noarch 0:4.0.9.2-1.el7_6
Dependency Installed:
deltarpm.x86_64 0:3.6-3.el7
dnf-data.noarch 0:4.0.9.2-1.el7_6
libcomps.x86_64 0:0.1.8-12.el7
libdnf.x86_64 0:0.22.5-1.el7_6
libmodulemd.x86_64 0:1.6.3-1.el7
librepo.x86_64 0:1.8.1-7.el7
libreport-filesystem.x86_64 0:2.1.11-43.el7.centos
libsolv.x86_64 0:0.6.34-4.el7
libyaml.x86_64 0:0.1.4-11.el7_0
python-enum34.noarch 0:1.0.4-1.el7
python2-dnf.noarch 0:4.0.9.2-1.el7_6
python2-hawkey.x86_64 0:0.22.5-1.el7_6
python2-libcomps.x86_64 0:0.1.8-12.el7
python2-libdnf.x86_64 0:0.22.5-1.el7_6
Complete!To remove yum package.
dnf -y remove yum yum-metadata-parser
rm -Rf /etc/yumSample output:
Remove 4 Packages
Freed space: 6.0 M
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Erasing : yum-utils-1.1.31-52.el7.noarch 1/4
Erasing : yum-plugin-fastestmirror-1.1.31-50.el7.noarch 2/4
Erasing : yum-3.4.3-161.el7.centos.noarch 3/4
Erasing : yum-metadata-parser-1.1.4-10.el7.x86_64 4/4
Verifying : yum-3.4.3-161.el7.centos.noarch 1/4
Verifying : yum-metadata-parser-1.1.4-10.el7.x86_64 2/4
Verifying : yum-plugin-fastestmirror-1.1.31-50.el7.noarch 3/4
Verifying : yum-utils-1.1.31-52.el7.noarch 4/4
Removed:
yum-3.4.3-161.el7.centos.noarch
yum-metadata-parser-1.1.4-10.el7.x86_64
yum-plugin-fastestmirror-1.1.31-50.el7.noarch
yum-utils-1.1.31-52.el7.noarch
Complete! To upgrade CentOS 7 to CentOS 8
To Upgrade dnf package. [This will take while to upgrade]
dnf upgradeSample output:
Installed:
bind-export-libs-32:9.11.4-9.P2.el7.x86_64 geoipupdate-2.5.0-1.el7.x86_64
kernel-3.10.0-1062.4.3.el7.x86_64
Complete!To install CentOS 8 Package.
dnf -y upgrade http://mirror.bytemark.co.uk/centos/8/BaseOS/x86_64/os/Packages/centos-release-8.0-0.1905.0.9.el8.x86_64.rpmSample Output:
Extra Packages for Enterprise Linux 7 - x86_64 46 MB/s | 16 MB 00:00
centos-release-8.0-0.1905.0.9.el8.x86_64.rpm 300 kB/s | 26 kB 00:00
Dependencies resolved.
================================================================================
Package Arch Version Repository Size
================================================================================
Upgrading:
centos-release x86_64 8.0-0.1905.0.9.el8 @commandline 26 k
Transaction Summary
================================================================================
Upgrade 1 Package
Total size: 26 k
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Upgrading : centos-release-8.0-0.1905.0.9.el8.x86_64 1/2
Cleanup : centos-release-7-7.1908.0.el7.centos.x86_64 2/2
Verifying : centos-release-8.0-0.1905.0.9.el8.x86_64 1/2
Verifying : centos-release-7-7.1908.0.el7.centos.x86_64 2/2
Upgraded:
centos-release-8.0-0.1905.0.9.el8.x86_64
Complete!To upgrade the EPEL repository.
dnf -y upgrade https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpmSample output:
Transaction Summary
================================================================================
Upgrade 1 Package
Total size: 21 k
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Upgrading : epel-release-8-7.el8.noarch 1/2
Cleanup : epel-release-7-12.noarch 2/2
Verifying : epel-release-8-7.el8.noarch 1/2
Verifying : epel-release-7-12.noarch 2/2
Upgraded:
epel-release-8-7.el8.noarch
Complete!To remove temporary files.
dnf clean allSample output:
62 files removedTo remove CentOS 7 kernel Core.
rpm -e `rpm -q kernel`To remove conflict packages incase.
rpm -e --nodeps sysvinit-toolsLaunch CentOS 8 Syatem upgrade. [It will take while to upgrade]
dnf -y --releasever=8 --allowerasing --setopt=deltarpm=false distro-syncSample output:
Upgrading : lzo-2.08-14.el8.x86_64 90/676
Upgrading : pciutils-libs-3.5.6-4.el8.x86_64 91/676
Running scriptlet: pciutils-libs-3.5.6-4.el8.x86_64 91/676
Upgrading : pcre-8.42-4.el8.x86_64 92/676
Running scriptlet: pcre-8.42-4.el8.x86_64 92/676
semodule: relocation error: semodule: symbol semanage_module_info_get_version version LIBSEMANAGE_1.1 not defined in file libsemanage.so.1 with link time reference
Upgrading : grep-3.1-6.el8.x86_64 93/676
Running scriptlet: grep-3.1-6.el8.x86_64 93/676
Upgrading : xz-5.2.4-3.el8.x86_64 94/676
Installing : squashfs-tools-4.3-17.el8.x86_64 95/676
Upgrading : libnetfilter_conntrack-1.0.6-5.el8.x86_64 96/676
Running scriptlet: libnetfilter_conntrack-1.0.6-5.el8.x86_64 96/676
Upgrading : libteam-1.27-10.el8.x86_64 97/676
Running scriptlet: libteam-1.27-10.el8.x86_64 97/676
Upgrading : groff-base-1.22.3-18.el8.x86_64 98/676
Upgrading : acl-2.2.53-1.el8.x86_64 99/676
Upgrading : vim-minimal-2:8.0.1763-10.el8.x86_64 100/676
Installing : libpsl-0.20.2-5.el8.x86_64 101/676
Complete!To install Kernel core for CentOS 8.
dnf -y install kernel-coreSample output:
Last metadata expiration check: 0:07:29 ago on Fri 15 Nov 2019 03:17:24 PM EST.
Package kernel-core-4.18.0-80.11.2.el8_0.x86_64 is already installed.
Dependencies resolved.
Nothing to do.
Complete!To install minimal package for CentOS 8.
dnf -y groupupdate "Core" "Minimal Install"Sample output:
Last metadata expiration check: 0:08:19 ago on Fri 15 Nov 2019 03:17:24 PM EST.
Dependencies resolved.
========================================================================================================
Package Arch Version Repository Size
========================================================================================================
Installing group/module packages:
dnf-plugin-spacewalk noarch 2.8.5-11.module_el8.0.0+180+337688dc AppStream 24 k
dnf-plugins-core noarch 4.0.2.2-3.el8 BaseOS 59 k
prefixdevname x86_64 0.1.0-6.el8 BaseOS 466 k
rng-tools x86_64 6.6-2.el8 BaseOS 57 k
sssd-common x86_64 2.0.0-43.el8_0.3 BaseOS 1.4 M
sssd-kcm x86_64 2.0.0-43.el8_0.3 BaseOS 207 k
yum noarch 4.0.9.2-5.el8 BaseOS 173 k
Installing dependencies:
python3-dnf-plugin-spacewalk noarch 2.8.5-11.module_el8.0.0+180+337688dc AppStream 30 k
python3-hwdata noarch 2.3.6-3.el8 AppStream 39 k
python3-netifaces x86_64 0.10.6-4.el8 AppStream 25 k
python3-newt x86_64 0.52.20-9.el8 AppStream 63 k
python3-pyOpenSSL noarch 18.0.0-1.el8 AppStream 103 k
python3-rhn-client-tools x86_64 2.8.16-13.module_el8.0.0+180+337688dc AppStream 109 k
python3-rhnlib noarch 2.8.6-8.module_el8.0.0+180+337688dc AppStream 77 kReboot Your system.
rebootTo check CentOS Version installed.
cat /etc/redhat-releaseSample output:
CentOS Linux release 8.1.1905 (core)