3 Installation and Availability
You can install Unbreakable Enterprise Kernel Release 4 on Oracle Linux 6 Update 7 or later, or Oracle Linux 7 Update 1 or later, running either the Red Hat compatible kernel or a previous version of the Unbreakable Enterprise Kernel. If you are still running an older version of Oracle Linux, first update your system to the latest available update release.
The Unbreakable Enterprise Kernel Release 4 is supported on the x86-64 architecture but not on x86.
Installation Overview
If you have a subscription to Oracle Unbreakable Linux support, you can obtain the packages for Unbreakable Enterprise Kernel Release 4 by registering your system with the Unbreakable Linux Network (ULN) and subscribing it to additional channels. See Subscribing to ULN Channels.
If your system is not registered with ULN, you can obtain most of the packages from the Oracle Linux yum server. See Enabling Access to Oracle Linux Yum Server Channels.
Having subscribed your system to the appropriate channels on ULN or Oracle Linux yum server, upgrade your system. See Upgrading Your System.
After upgrading to UEK R4, you can replace any existing OFED packages with the Oracle-supported OFED packages, see Installing the Oracle-Supported OFED Packages.
Subscribing to ULN Channels
The kernel image and user-space packages are available on the following ULN channels for Oracle Linux 6:
-
ol6_x86_64_latest
(latest user-space packages for Oracle Linux 6 other than DTrace, OFED, and DRBD packages) -
ol6_x86_64_UEKR4
(kernel-uek*
,dtrace-modules-*
, andlibdtrace-*
) -
ol6_x86_64_UEKR4_DTrace_userspace
(dtrace-utils*
) -
ol6_x86_64_UEKR4_OFED
(latest OFED tools packages) -
ol6_x86_64_mysql-ha-utils
(drbd84-utils
)
The kernel image and user-space packages are available on the following ULN channels for Oracle Linux 7:
-
ol7_x86_64_latest
(all of the latest user-space packages for Oracle Linux 7 other than DTrace, OFED, and DRBD packages) -
ol7_x86_64_latest_optional
(the latest optional user-space packages for Oracle Linux 7 other than DTrace, OFED, and DRBD packages) -
ol7_x86_64_UEKR4
(kernel-uek*
,dtrace-modules-*
, andlibdtrace-*
) -
ol7_x86_64_UEKR4_DTrace_userspace
(dtrace-utils*
) -
ol7_x86_64_UEKR4_OFED
(latest OFED tools packages) -
ol7_x86_64_mysql-ha-utils
(drbd84-utils
)
The following procedure assumes that you have already registered your system with ULN.
To subscribe your system to a channel on ULN:
-
Log in to https://linux.oracle.com with your ULN user name and password.
-
On the Systems tab, click the link named for the system in the list of registered machines.
-
On the System Details page, click Manage Subscriptions.
-
On the System Summary page, select each required channel from the list of available channels and click the right arrow to move the channel to the list of subscribed channels.
For Oracle Linux 6, subscribe the system to the
ol6_x86_64_latest
andol6_x86_64_UEKR4
channels. If required, you can also add the channels for the DTrace, OFED, and DRBD packages. You do not need to subscribe the system to theol6_x86_64_UEK_latest
orol6_x86_64_UEKR3_latest
channels.For Oracle Linux 7, subscribe the system to the
ol7_x86_64_latest
andol7_x86_64_UEKR4
channels. If required, you can also add the channels for the DTrace, OFED, and DRBD packages. You do not need to subscribe the system to theol7_x86_64_UEKR3
channel. -
Click Save Subscriptions.
For information about using ULN, see Oracle Linux: Unbreakable Linux Network User's Guide for Oracle Linux 6 and Oracle Linux 7.
Enabling Access to Oracle Linux Yum Server Channels
At the Oracle Linux yum server at https://yum.oracle.com/, the kernel image and user-space packages are available on the following channels for Oracle Linux 6:
-
ol6_latest
(latest user-space packages for Oracle Linux 6 other than the OFED tool packages) -
ol6_UEKR4
(kernel-uek*
,dtrace-modules-*
, andlibdtrace-*
) -
ol6_UEKR4_OFED
(latest OFED tools packages)
For Oracle Linux 7:
-
ol7_latest
(latest user-space packages for Oracle Linux 7 other than the OFED tool packages) -
ol7_UEKR4
(kernel-uek*
,dtrace-modules-*
, andlibdtrace-*
) -
ol7_UEKR4_OFED
(latest OFED tools packages)
Note:
To be able to install UEK R4, enable the appropriate
ol6_UEKR4
or ol7_UEKR4
channel and disable the ol6_UEKR3_latest
or
ol7_UEKR3
channel.
The DTrace utility and DRBD packages are not available on the Oracle Linux yum server.
To enable access to the Oracle Linux 6 channels on the Oracle
Linux yum server, create entries such as the following in
/etc/yum.conf
or in a repository file in the
/etc/yum.repos.d
directory:
[ol6_latest] name=Oracle Linux $releasever Latest ($basearch) baseurl=https://yum.oracle.com/repo/OracleLinux/OL6/latest/$basearch/ gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle gpgcheck=1 enabled=1 [ol6_UEK_latest] name=Latest Unbreakable Enterprise Kernel for Oracle Linux $releasever ($basearch) baseurl=https://yum.oracle.com/repo/OracleLinux/OL6/UEK/latest/$basearch/ gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle gpgcheck=1 enabled=0 [ol6_UEKR4] name=Latest Unbreakable Enterprise Kernel Release 4 for Oracle Linux $releasever ($basearch) baseurl=https://yum.oracle.com/repo/OracleLinux/OL6/UEKR4/latest/$basearch/ gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle gpgcheck=1 enabled=1 [ol6_playground_latest] name=Latest mainline stable kernel for Oracle Linux 6 ($basearch) - Unsupported baseurl=https://yum.oracle.com/repo/OracleLinux/OL6/playground/latest/$basearch/ gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle gpgcheck=1 enabled=0 [ol6_UEKR4_OFED] name=OFED supporting tool packages for Unbreakable Enterprise Kernel Release 4 on Oracle Linux 6 ($basearch) baseurl=https://yum.oracle.com/repo/OracleLinux/OL6/UEKR4/OFED/$basearch/ gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle gpgcheck=1 enabled=0 priority=20
To enable a channel, set the value of the
enabled
parameter for the channel to 1.
To disable a channel, set the value of the
enabled
parameter for the channel to 0.
In this example, access is enabled to the
ol6_latest
and ol6_UEKR4
channels but not to the ol6_UEK_latest
,
ol6_playground_latest
and
ol6_UEKR4_OFED
channels.
To enable access to the Oracle Linux 7 channels, create entries such as the following:
[ol7_latest] name=Oracle Linux $releasever Latest ($basearch) baseurl=https://yum.oracle.com/repo/OracleLinux/OL7/latest/$basearch/ gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle gpgcheck=1 enabled=1 [ol7_UEKR4] name=Latest Unbreakable Enterprise Kernel Release 4 for Oracle Linux $releasever ($basearch) baseurl=https://yum.oracle.com/repo/OracleLinux/OL7/UEKR4/$basearch/ gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle gpgcheck=1 enabled=1 [ol7_UEKR4_OFED] name=OFED supporting tool packages for Unbreakable Enterprise Kernel Release 4 on Oracle Linux 7 ($basearch) baseurl=https://yum.oracle.com/repo/OracleLinux/OL7/UEKR4/OFED/$basearch/ gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle gpgcheck=1 enabled=0 priority=20
In this example, access is enabled to the
ol7_latest
and ol7_UEKR4
channels but not to the ol7_UEKR4_OFED
channel.
You can find more information about installing the software at https://yum.oracle.com/, from where you download a copy of a suitable repository file (https://yum.oracle.com/public-yum-ol6.repo or https://yum.oracle.com/public-yum-ol7.repo).
Upgrading Your System
To upgrade your system to UEK R4:
-
After enabling access to the appropriate channels, including
ol6_UEKR4
orol7_UEKR4
, on the Oracle Linux yum server orol6_x86_64_UEKR4
orol7_x86_64_UEKR4
on ULN, run the following command to upgrade the system to UEK R4:# yum update
-
After upgrading the system, reboot it, selecting the UEK R4 kernel (version 4.1.12) if this is not the default boot kernel.
See the Boot and Service Configuration chapter in Oracle Linux 7: Administrator's Guide or https://docs.oracle.com/en/operating-systems/oracle-linux/6/admin/ol_bootconf.html for more information on updating the default boot kernel on Oracle Linux.
For instructions on how to install the Oracle-supported OFED packages after upgrading to UEK R4, see Installing the Oracle-Supported OFED Packages.
If you have questions regarding configuring or using yum to install updates, refer to Oracle Linux: Unbreakable Linux Network User's Guide for Oracle Linux 6 and Oracle Linux 7.
The kernel's source code is available via a public git source code repository at https://oss.oracle.com/git/?p=linux-uek.git;a=summary.
Installing the Oracle-Supported OFED Packages
This section describes how to install the OFED packages provided by Oracle, including how to remove any existing OFED packages.
To install the OFED packages provided by Oracle:
-
If your system is registered with ULN, subscribe the system to the
ol6_x86_64_UEKR4_OFED
orol7_x86_64_UEKR4_OFED
channel on ULN as appropriate.If you want to install the packages from the Oracle Linux yum server:
-
Move the existing yum repository file to a backup file, for example:
# mv /etc/yum.repos.d/public-yum-olN.repo /etc/yum.repos.d/public-yum-olN.repo.bck
-
Download the latest yum repository file for Oracle Linux 6 or Oracle Linux 7 from the Oracle Linux yum server.
# wget -O /etc/yum.repos.d/public-yum-olN.repo https://yum.oracle.com/public-yum-olN.repo
-
Edit the downloaded yum repository file and enable the
ol6_UEKR4_OFED
orol7_UEKR4_OFED
repository as appropriate.
-
-
If you are running Oracle Linux 7, stop and disable the
rdma.service
service.# systemctl stop rdma.service # systemctl disable rdma.service
-
If you are transitioning from an earlier UEK version, such as UEK R2 or UEK R3, you must remove any existing OFED packages and clean any cached files from all previously enabled repositories. You do not need to perform this step if you are already running a version of UEK R4.
# yum remove 'ibacm*' # yum remove 'ib-bonding*' # yum remove 'ibutils*' # yum remove 'infiniband-diags*' # yum remove 'libibcm*' # yum remove 'libibmad*' # yum remove 'libibumad*' # yum remove 'libibverbs*' # yum remove 'libmlx4*' # yum remove 'librdmacm*' # yum remove 'libsdp*' # yum remove 'mstflint*' # yum remove 'ofed-docs*' # yum remove 'ofed-scripts*' # yum remove 'opensm*' # yum remove 'perftest*' # yum remove 'qperf*' # yum remove 'sdpnetstat*' # yum remove 'rdma-*' # yum remove 'rds-tools*'
Clean all yum cached files from all enabled repositories:
# yum clean all
-
Install the OFED packages for UEK R4.
# yum install oracle-ofed-release
-
Enable the RDMA service by entering the following command:
# chkconfig rdma on
Note:
Each UEK release requires a different set of OFED packages. If you change the kernel on your system to a UEK release earlier than UEK R4, use the following command to remove the existing UEK R4-based OFED packages before installing the correct packages for the new kernel:
# yum remove --setopt=clean_requirements_on_remove=1 oracle-ofed-release
Downgrading UEK versions is not advisable except for testing purposes.
To update OFED packages already installed for UEK R4, simply run:
# yum update oracle-ofed-release