The Ksplice Enhanced Client can be used to apply updates and
patches to the running Xen hypervisor, the running kernel, as well
as certain Ksplice-aware user space libraries, including
xen-tools. To install and manage the Ksplice
patches on your system, use the ksplice command
on the Oracle Linux command line.
To display the running user space, kernel and xen processes that the client can patch, use the ksplice all list-targets command. For each Ksplice-aware library, the command reports the running processes that would be affected by an update.
# ksplice all list-targets User-space targets: glibc-libpthread-2.12.1.209.0.3.ksplice1.el6_9.2: - multipathd (1582) - auditd (2077) - rsyslogd (2111) - rpcbind (2155) [...] glibc-libutil-2.12.1.209.0.3.ksplice1.el6_9.2: - sshd (2447) - xenconsoled (2533) - qemu-system-i38 (2537) - xend (2844) [...] xen-tools-tools_xenstore_xenstored-4.4.4.155.0.27.ksplice1.el6: - xenstored (2526) xen-tools-tools_console_xenconsoled-4.4.4.155.0.27.ksplice1.el6: - xenconsoled (2533) glibc-libm-2.12.1.209.0.3.ksplice1.el6_9.2: - multipathd (1582) - auditd (2077) - irqbalance (2126) - cupsd (2323) - ntpd (2460) [...] glibc-libnss_dns-2.12.1.209.0.3.ksplice1.el6_9.2: - ntpd (2460) - sshd (3975) - sshd (11292) xen-tools-tools_libxc_libxenctrl.so.4.4.0-4.4.4.155.0.27.ksplice1.el6: - xenstored (2526) - xenconsoled (2533) - qemu-system-i38 (2537) - xend (2844) [...] openssl-libssl-1.0.1e.57.0.1.ksplice1.el6: - qemu-system-i38 (2537) - master (2706) - pickup (2736) - qmgr (2737) - xend (2844) [...] xen-tools-tools_xenstore_libxenstore.so.3.0.3-4.4.4.155.0.27.ksplice1.el6: - xenconsoled (2533) - qemu-system-i38 (2537) - xend (2844) [...] Kernel version: Linux/x86_64/4.1.12-124.14.5.el6uek.x86_64/#2 SMP Fri May 4 15:36:12 PDT 2018 xen/x86_64/4.4.4OVM/Fri May 11 20:21:05 PDT 2018
To display the updates that are available for installation, use the ksplice all show --available command. If you want to restrict the scope of the command to a particular category, use these alternatives instead:
To display the available user space updates: ksplice -n user upgrade
To display the available kernel updates: ksplice -n kernel upgrade
To display the available xen updates: ksplice -n xen upgrade
# ksplice -n xen upgrade The following steps will be taken: Install [d71xqwov]: update. Install [ion5usqz]: update 3. Install [0323dejx]: update 2.
To install the available Ksplice updates, use the ksplice -y all upgrade command. If you want to restrict the scope of the command to a particular category, use these alternatives instead:
To install all user space updates: ksplice -y user upgrade
To install all kernel updates: ksplice -y kernel upgrade
To install all xen updates: ksplice -y xen upgrade
# ksplice -y xen upgrade The following steps will be taken: Install [d71xqwov]: update. Install [ion5usqz]: update 3. Install [0323dejx]: update 2. 100% |###########################################################################################| Done!
# ksplice -y user upgrade Updating on-disk packages for new processes Setting up Update Process uln_mirror_ovm34_x86_64_ksplice | 2.5 kB 00:00 Resolving Dependencies [...] =================================================================================================================== Package Arch Version Repository Size =================================================================================================================== Updating: glibc i686 2:2.12-1.209.0.3.ksplice1.el6_9.2 uln_mirror_ovm34_x86_64_ksplice 4.4 M glibc x86_64 2:2.12-1.209.0.3.ksplice1.el6_9.2 uln_mirror_ovm34_x86_64_ksplice 3.8 M glibc-common x86_64 2:2.12-1.209.0.3.ksplice1.el6_9.2 uln_mirror_ovm34_x86_64_ksplice 14 M glibc-devel x86_64 2:2.12-1.209.0.3.ksplice1.el6_9.2 uln_mirror_ovm34_x86_64_ksplice 992 k glibc-headers x86_64 2:2.12-1.209.0.3.ksplice1.el6_9.2 uln_mirror_ovm34_x86_64_ksplice 619 k nscd x86_64 2:2.12-1.209.0.3.ksplice1.el6_9.2 uln_mirror_ovm34_x86_64_ksplice 232 k openssl x86_64 2:1.0.1e-57.0.1.ksplice1.el6 uln_mirror_ovm34_x86_64_ksplice 1.5 M xen-tools x86_64 2:4.4.4-155.0.27.ksplice1.el6 uln_mirror_ovm34_x86_64_ksplice 8.7 M Installing for dependencies: ksplice-helper x86_64 1.0.32-1.el6 uln_mirror_ovm34_x86_64_ksplice 17 k Transaction Summary ==================================================================================================================== Install 1 Package(s) Upgrade 8 Package(s) Total download size: 34 M Downloading Packages: (1/9): glibc-2.12-1.209.0.3.ksplice1.el6_9.2.i686.rpm | 4.4 MB 00:00 (2/9): glibc-2.12-1.209.0.3.ksplice1.el6_9.2.x86_64.rpm | 3.8 MB 00:00 (3/9): glibc-common-2.12-1.209.0.3.ksplice1.el6_9.2.x86_64.rpm | 14 MB 00:00 (4/9): glibc-devel-2.12-1.209.0.3.ksplice1.el6_9.2.x86_64.rpm | 992 kB 00:00 (5/9): glibc-headers-2.12-1.209.0.3.ksplice1.el6_9.2.x86_64.rpm | 619 kB 00:00 (6/9): ksplice-helper-1.0.32-1.el6.x86_64.rpm | 17 kB 00:00 (7/9): nscd-2.12-1.209.0.3.ksplice1.el6_9.2.x86_64.rpm | 232 kB 00:00 (8/9): openssl-1.0.1e-57.0.1.ksplice1.el6.x86_64.rpm | 1.5 MB 00:00 (9/9): xen-tools-4.4.4-155.0.27.ksplice1.el6.x86_64.rpm | 8.7 MB 00:00 --------------------------------------------------------------------------------------------------------------------- Total MB/s | 34 MB 00:00 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction [...] Complete!
To display the updates that have been applied to the system, use the ksplice all show command. If you want to restrict the scope of the command to a particular category, specify user, kernel or xen instead of all.
# ksplice all show Ksplice user-space updates: No Ksplice user-space updates installed Ksplice kernel updates: Installed updates: None Effective kernel version is 4.1.12-124.14.5.el6uek Ksplice xen updates installed: [ion5usqz]: update 3. [0323dejx]: update 2. [d71xqwov]: update.
After Ksplice has applied updates to a running kernel, the
kernel has an effective version that is different from the
original boot version displayed by the uname
-a command. Use the ksplice kernel uname
-r command to display the effective version of the
kernel.
To remove Ksplice updates from the system, use the remove subcommand. You can choose to remove Ksplice updates for the category user, kernel or xen.
# ksplice -y xen remove --all The following steps will be taken: Remove [d71xqwov]: update. Remove [ion5usqz]: update 3. Remove [0323dejx]: update 2. 100% |############################################################################################| Done!
For more information about using the ksplice
command, see the ksplice(8) manual page.