02-05-2015
Quote:
Originally Posted by
rbatte1
but usually a yum update will pick up everything applicable for your server. If you do this, make sure you are able to boot again afterwards and that there is space available in /boot in case it triggers a kernel rebuild in the boot.
Humm, I do not believe that this is correct information.
I have never had an RHEL update trigger a kernel rebuild anywhere yet alone in /boot. To use RHEL, you are not required to have the kernel sources or headers or even a compiler.
What actually happens is the yum update will download updated kernel and initrd binaries into /boot and modify your GRUB configuration to default boot using the new kernel/initrd. Only a configurable number of "old" kernel/initrd binaries are retained in /boot. I believe the default number is 3 but I am not in front of a RHEL system as I write this.
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LEARN ABOUT DEBIAN
kumoctl
KUMOCTL(1) General Commands Manual KUMOCTL(1)
NAME
kumoctl - show kumofs status
SYNOPSIS
kumoctl address[:port=19750] command [options]
DESCRIPTION
Show status of kumo-manager and send control commands to kumo-manager.
COMMANDS
status show status of the cluster
attach attach all new servers and start replace
attach-noreplace
attach all new servers
detach detach all fault servers and start replace
detach-noreplace
detach all fault servers
replace
start replace without attach/detach
full-replace
start full-replace (repair consistency)
backup [suffix=20090304]
create backup with specified suffix
enable-auto-replace
enable auto replace
disable-auto-replace
disable auto replace
STATUS
hash space timestamp
The time that the list of attached kumo-servers is updated. It is updated when new kumo-server is added or existing kumo-server is
down.
attached node
The list of attached kumo-servers. (active) is normal node and (fault) is fault node or recoverd but not re-attached node.
not attached node
The list of recognized but not-attached nodes.
AUTO REPLACING
By default, you have to attach new kumo-servers manually using kumoctl command. If the auto replacing is enabled, new kumo-servers are
attached automatically. This is experimental feature.
EXAMPLE
$ kumoctl mgr1 status
$ kumoctl mgr1 attach
SEE ALSO
kumo-manager(1).
kumoctl July 2009 KUMOCTL(1)