install less stuff

[mirror/dsa-wiki.git] / input / howto / install-ganeti.creole

diff --git a/input/howto/install-ganeti.creole b/input/howto/install-ganeti.creole
index 47ead83..bd7d85c 100644 (file)
--- a/input/howto/install-ganeti.creole
+++ b/input/howto/install-ganeti.creole
@@ -36,8 +36,9 @@ The following DNS records exist:
 On each node, install the required packages:
 
 {{{
 On each node, install the required packages:
 
 {{{

-    apt-get install fai-client ssed extlinux
-    apt-get install -t squeeze-backports drbd8-utils ganeti2 ganeti-instance-debootstrap ganeti-htools
+    # maybe: apt-get install drbd8-utils
+    # maybe: apt-get install ganeti-instance-debootstrap
+    apt-get install ganeti2 ganeti-htools qemu-kvm

 }}}
 
 === configure kernel modules ===
 }}}
 
 === configure kernel modules ===


@@ -49,6 +50,7 @@ On each node, ensure that the required kernel modules are loaded at boot:
     ainsl /etc/modules 'hmac'
     ainsl /etc/modules 'tun'
     ainsl /etc/modules 'ext3'
     ainsl /etc/modules 'hmac'
     ainsl /etc/modules 'tun'
     ainsl /etc/modules 'ext3'

+    ainsl /etc/modules 'ext4'

 }}}
 
 === configure networking ===
 }}}
 
 === configure networking ===


@@ -124,17 +126,6 @@ On each node, create a volume group:
     vgcreate vg_ganeti /dev/cciss/c0d0p3
 }}}
 
     vgcreate vg_ganeti /dev/cciss/c0d0p3
 }}}
 

-=== create kvmU symbolic links ===
-
-On each node, create vmlinuz and initrd symlinks as expected by the kvm
-hypervisor (not strictly required if all guests will boot from their own
-kernels):
-
-{{{
-    ln -s -T /boot/vmlinuz-2.6.32-5-amd64 /boot/vmlinuz-2.6-kvmU
-    ln -s -T /boot/initrd.img-2.6.32-5-amd64 /boot/initrd.img-2.6-kvmU
-}}}
-

 === exchange ssh keys ===
 
 on each node:
 === exchange ssh keys ===
 
 on each node:


@@ -162,7 +153,7 @@ On the master node (foo) only:
       --mac-prefix 00:16:37 \
       --no-ssh-init \
       --no-etc-hosts \
       --mac-prefix 00:16:37 \
       --no-ssh-init \
       --no-etc-hosts \

-      --hypervisor-parameters kvm:initrd_path=/boot/initrd.img-2.6-kvmU,kernel_path=/boot/vmlinuz-2.6-kvmU \
+      --hypervisor-parameters kvm:initrd_path=,kernel_path= \

       foobar.debian.org
 }}}
 
       foobar.debian.org
 }}}
 


@@ -330,3 +321,58 @@ Please note that the hook scripts are run only at instance instantiation.  When
 adding interfaces to an instance, the guest opearting system must be updated
 manually.
 
 adding interfaces to an instance, the guest opearting system must be updated
 manually.
 

+
+* If you are importing an instance from libvirt with LVM setup, you can adopt LVs:
+
+{{{
+    gnt-instance add -t plain --os-type debootstrap+dsa-wheezy \
+      --disk 0:adopt=lully-boot \
+      --disk 1:adopt=lully-root \
+      --disk 2:adopt=lully-swap \
+      --disk 3:adopt=lully-log  \
+      --hypervisor-parameters kvm:initrd_path=,kernel_path= \
+      --net 0:ip=82.195.75.99 -n clementi.debian.org  lully.debian.org
+}}}
+
+And you want to convert it to use DRBD afterwards and start it on the other cluster node, so we can ensure that DRBD is correctly working.
+{{{
+    gnt-instance shutdown lully.debian.org
+    gnt-instance modify -t drbd -n czerny.debian.org lully.debian.org
+    gnt-instance failover lully.debian.org
+    gnt-instance startup lully.debian.org
+}}}
+
+* Some instances NEED ide instead of virtio
+
+{{{
+    gnt-instance modify --hypervisor-parameters disk_type=ide fils.debian.org
+}}}
+
+* To import instances with SAN volumes
+
+{{{
+    gnt-instance add -t blockdev --os-type debootstrap+dsa \
+      --disk 0:adopt=/dev/disk/by-id/scsi-reger-boot \
+      --disk 1:adopt=/dev/disk/by-id/scsi-reger-root \
+      --hypervisor-parameters kvm:initrd_path=,kernel_path= \
+      --net 0:ip=206.12.19.124 -n rossini.debian.org reger.debian.org
+}}}
+
+* How to add new LUNs to Bytemark Cluster
+
+{{{
+  + Add a new LUN in the MSA and export it to all blades
+
+  then:
+  gnt-cluster command "echo 1 > /sys/bus/pci/devices/0000:0e:00.0/cciss0/rescan"
+  
+  then:
+  reload multipath-tools on gnt-master (normaly bm-bl1):
+  service multipath-tools reload
+  add the WWNs to dsa-puppet/modules/multipath/files/bm-multipath.conf and define the alias and commit that file to git.
+
+  then:
+  gnt-cluster command "puppet agent -t"
+
+  This will update the multipath config on all cluster nodes. WITHOUT doing this, you can't migrate VMs between nodes.
+}}}