sysconfig

config-flags | string

If extra lines need to be configured on /etc/default/grub (isolcpus) or /etc/systemd/system.conf (affinity), this string can be used as a list in yaml format. Sample: {'grub': 'key1=value1, key2=value2', 'systemd': 'key1=value1'} [DEPRECATED]: this option should no longer be used. Instead grub-config-flags and systemd-config-flags should be used.

cpu-affinity-range | string

Single pcpus (0,1,2) or range of pcpus (0-10) This will update /etc/systemd/system.conf and update the CPUAffinity variable with the option here

cpu-range | string

Single pcpus (0,1,2) or range of pcpus (0-10) to isolate (if isolcpus is selected) or reserve (if affinity is selected). Default value (empty) will make "reservation" work as if it was "off". [DEPRECATED]: this option should no longer be used. Instead isolcpus and cpu-affinity-range should be used.

default-hugepagesz | string

Size of default hugepage. Example: 1G

enable-container | boolean

Enable support for containers. For testing purpose only.

enable-iommu | boolean

If true and VT-d enabled in the BIOS, it will allow to use direct I/O bypassing DMA translation with pci-passthrough devices. Enable it to use SR-IOV

enable-pti | string

Allow enabling/disabling page table isolation, adding pti=on/off to grub cmdline Allowed values are 'on' or 'off'. Default is unset, to have the upstream configuration as the default.

enable-tsx | boolean

If true then tsx=on tsx_async_abort=off is passed on the grub command line. On all new kernel this is disabled by default, and this option will re-enable it. More information on the details can be found in the following URL: https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/TAA_MCEPSC_i915

extra_packages | string

Space separated list of extra deb packages to install.

governor | string

Configured via cpufrequtils, possible values are: - '' (default): systemd will choose the first available between 'ondemand', 'powersave', 'performance'. Recommended option when Bios control power is set to the OS. - 'performance' - 'powersave'

grub-config-flags | string

If extra lines need to be configured on /etc/default/grub this string can be used as a list of key/value pairs 'key1=value1,key2=value2'. If you want to add additional parameters to GRUB_CMDLINE_LINUX_DEFAULT, then you need to include the existing items to avoid them being overwritten, for example grub-config-flags='GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT nvme_core.multipath=0' Also supports adding values with special characters in them(`$`, `=`, `,` etc.) but they need to be enclosed in double quotes. For example, grub-config-flags='GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT console=ttyS0,115200 console=tty0",GRUB_TIMEOUT=0'

hugepages | string

Number of hugepages. Example: 400

hugepagesz | string

Size of each hugepage. Example: 1G

install_keys | string

List of signing keys for install_sources package sources, per charmhelpers standard format (a yaml list of strings encoded as a string). The keys should be the full ASCII armoured GPG public keys. While GPG key ids are also supported and looked up on a keyserver, operators should be aware that this mechanism is insecure. null can be used if a standard package signing key is used that will already be installed on the machine, and for PPA sources where the package signing key is securely retrieved from Launchpad.

install_sources | string

List of extra apt sources, per charm-helpers standard format (a yaml list of strings encoded as a string). Each source may be either a line that can be added directly to sources.list(5), or in the form ppa:<user>/<ppa-name> for adding Personal Package Archives, or a distribution component to enable.

irqbalance-banned-cpus | string

64 bit bitmask which allows you to indicate which CPU's should be skipped when reblancing irqs. CPU numbers which have their corresponding bits set to one in this mask will not have any IRQs assigned to them on rebalance

isolcpus | string

Single pcpus (0,1,2) or range of pcpus (0-10) isolcpus is a kernel cmdline parameter, and will append isolcpus to the grub command line with the option given here.

kernel-version | string

Upgrade kernel and modules-extra package to this version and add GRUB_DEFAULT to /etc/default/grub to load the required kernel version. Does nothing if same kernel already running.

package_status | string

Default: install

The status of service-affecting packages will be set to this value in the dpkg database. Valid values are "install" and "hold".

raid-autodetection | string

Configure raid detection. Possible value are - '': (default) autodetection enabled if md module is compiled into the kernel - 'noautodetect': autodetection is disabled - 'partitionable': all auto-detected arrays are assembled as partitionable

reservation | string

Default: off

Type of CPU reservation: isolcpus, affinity, off isolcpus is a kernel cmdline parameter affinity (CPU Affinity) is a systemd configuration parameter. Other processes inherit from systemd-system.conf off (default) disables any CPU reservation on host-side. [DEPRECATED]: this option should no longer be used. Instead isolcpus and cpu-affinity-range should be used.

resolved-cache-mode | string

Sets the "Cache" configuration value in /etc/systemd/resolved.conf. Valid values are '' (system default), 'yes', 'no', and 'no-negative'.

sysctl | string

YAML-formatted associative array of sysctl key/value pairs to be set persistently. eg. { kernel.max_pid: 1337, net.ipv4.ip_forward: 0 }

systemd-config-flags | string

If extra lines need to be configured on /etc/systemd/system.conf this string can be used as a list of key/value pairs 'key1=value1,key2=value2'

update-grub | boolean

Allows the charm to run "update-grub" command if /etc/default/grub was changed. This is discouraged and by default it is disabled.