Public:Honza801/debian cluster

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/High_Availability_Add-On_Reference/ch-clustresources-HAAR.html

http://clusterlabs.org/quickstart-ubuntu.html

https://wiki.debian.org/Debian-HA/ClustersFromScratch

http://ppa.mmogp.com/apt/debian/

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Logical_Volume_Manager_Administration/LVM_administration.html#cluster_setup

testovani

pro biha na jessie.

peacemaker + corosync

• musi se nabrat ze sid/stretch.
• nefunguje clvm (mozna chyba nastaveni???) - zkusit znova
  • problem s clvm locking_type=3 a lvm2-lvmetad (lvmetad)
  • nejde ani po stahnutim zdrojaku (apt-get source), prekompilovani a opravy Makefile pro lvm2 (chybela nejaka knihovna)

cman

• funguje z jessie
  • baliky xen* 4.4.1-9+deb8u1
• funguje i clvm (bez snapshotu)
• problem pri migraci virtualu
  • timeoutovani virsh obejdes: virsh -k10 -K10 migrate --live docker xen+ssh://nesoi1/
  • pak stejne error

libxl: error: libxl.c:855:libxl_domain_unpause: unpausing domain 5: Invalid argument

<?xml version="1.0"?>
<cluster name="nesoi" config_version="2">
	<clusternodes>
		<clusternode name="nesoi1" nodeid="1">
		</clusternode>
		<clusternode name="nesoi2" nodeid="2">
		</clusternode>
		<clusternode name="nesoi3" nodeid="3">
		</clusternode>
	</clusternodes>
	<logging debug="on"/>
    <dlm protocol="tcp" timewarn="500">
    </dlm>
</cluster>

cman + kvm

Pro bootovani z partisny je treba vytvorit grub a dat jako kernel parametr k virtualu

grub-mkimage -O i386-pc -o grub.img --prefix="(hd0)/boot/grub" part_msdos ext2 xfs biosdisk

je potreba prehodit xvda za sda (pokud migruju virtual z xenu)

• jessie libvirt ma problem s systemd.
  • https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=799922
  • https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=773313

# virsh start docker
error: Failed to start domain docker
error: error from service: CreateMachine: Activation of org.freedesktop.machine1 timed out

• sysvinit funguje vcetne
  • lvm, clvm
  • kvm, live migrace