[ClusterLabs] OS Patching Process

[Jason A Ramsey]

I’ve done the opposite:

lvm on top of drbd -> iscsi lun

but I’m not trying to resize anything. I just want to patch the OS of the nodes and reboot them in sequence without breaking things (and, preferably, without taking the cluster offline).

--
 
[ jR ]

  there is no path to greatness; greatness is the path

On 11/22/16, 11:47 AM, "emmanuel segura" <emi2fast at gmail.com> wrote:

    I been using this mode: iscsi_disks -> lvm volume ->
    drbd_on_top_of_lvm -> filesystem
    
    resize: add_one_iscsi_device_to_every_cluster_node_first ->
    now_add_device_the_volume_group_on_every_cluster_node ->
    now_resize_the_volume_on_every_cluster_node : now you have every
    cluster with the same logical volume size, now you can resize drbd and
    filesystem on the active node
    
    2016-11-22 17:35 GMT+01:00 Jason A Ramsey <jason at eramsey.org>:
    > Can anyone recommend a bulletproof process for OS patching a pacemaker
    > cluster that manages a drbd mirror (with LVM on top of the drbd and luns
    > defined for an iscsi target cluster if that matters)? Any time I’ve tried to
    > mess with the cluster, it seems like I manage to corrupt my drbd filesystem,
    > and now that I have actual data on the thing, that’s kind of a scary
    > proposition. Thanks in advance!
    >
    >
    >
    > --
    >
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    >
    > [ jR ]
    >
    >
    >
    >   there is no path to greatness; greatness is the path
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