Zabbix server extend disk size

[musc1]

Hi all,

I have disk memory problem in zabbix server as it is almost 90% used. Can you help me by guiding me on how to extend the disk size of zabbix host? I have the partitions showed in the figures.

[joostdeheer]

Since you're using LVM this can be done online

The procedure is:
1 Add a new physical volume. or extend the current physical volume
2 Add the new physical volume to the volume group
3 Add the new free space to the logical volume
4 Extend the filesystem on the logical volume

Some information that I gathered from your screenshot:
* The logical volume that needs to be extended is the one that's mounted on /var
* The logical volume name is 'var'
* This logical volume resides on volume group 'vg01'

The following information is missing: What type of filesystem is on the disk? XFS? Ext4? Btrfs?

The easiest way is to add a new disk as a new physical volume. You can extend the current physical volume on the existing disk as well, but that can be a bit trickier.

Step 0, before you do anything, or before you even start thinking about doing anything: Make sure you have a current backup, and that you've tested the restore procedure!

1. Add a new physical volume
Add a new disk to the server
Snapshot the machine
Log in
Rescan the SCSI-bus (most distro's have 'rescan-scsi-bus.sh' or something similar, if you don't have it check https://www.debuntu.org/how-to-resca...out-rebooting/ for the manual procedure)
fdisk -l should now show the new disk, let's say it's /dev/sdb.
pvcreate /dev/sdb
2. Add the new physical volume to the volume group
vgextend vg01 /dev/sdb
3. Add the new free space to the logical volume
lvextend /dev/vg01/var -l+100%FREE
4. Extend the filesystem on the logical volume
If you use XFS: xfs_growfs /dev/mapper/vg01-var
If you use ext4: resize2fs /dev/mapper/vg01-var
If you use btrfs: btrfs filesystem resize max /var

If you really want to extend the current partition and you can have downtime: Try gparted (https://gparted.org), it's a bootable ISO with a graphical interface so you can resize the partitions and volumes graphically, and all the fiddling with partition tables will be done in the background for you.

[joostdeheer]

Since you're using LVM this can be done online

The procedure is:
1 Add a new physical volume. or extend the current physical volume
2 Add the new physical volume to the volume group
3 Add the new free space to the logical volume
4 Extend the filesystem on the logical volume

Some information that I gathered from your screenshot:
* The logical volume that needs to be extended is the one that's mounted on /var
* The logical volume name is 'var'
* This logical volume resides on volume group 'vg01'

The following information is missing: What type of filesystem is on the disk? XFS? Ext4? Btrfs?

The easiest way is to add a new disk as a new physical volume. You can extend the current physical volume on the existing disk as well, but that can be a bit trickier.

Step 0, before you do anything, or before you even start thinking about doing anything: Make sure you have a current backup, and that you've tested the restore procedure!

1. Add a new physical volume
Add a new disk to the server
Snapshot the machine
Log in
Rescan the SCSI-bus (most distro's have 'rescan-scsi-bus.sh' or something similar, if you don't have it check https://www.debuntu.org/how-to-resca...out-rebooting/ for the manual procedure)
fdisk -l should now show the new disk, let's say it's /dev/sdb.
pvcreate /dev/sdb
2. Add the new physical volume to the volume group
vgextend vg01 /dev/sdb
3. Add the new free space to the logical volume
lvextend /dev/vg01/var -l+100%FREE
4. Extend the filesystem on the logical volume
If you use XFS: xfs_growfs /dev/mapper/vg01-var
If you use ext4: resize2fs /dev/mapper/vg01-var
If you use btrfs: btrfs filesystem resize max /var

If you really want to extend the current partition and you can have downtime: Try gparted (https://gparted.org), it's a bootable ISO with a graphical interface so you can resize the partitions and volumes graphically, and all the fiddling with partition tables will be done in the background for you.

[musc1]

Thank you very much joostdeheer for the details guide. I managed to extend the disk following your suggestions without downtime.

[sciensys]

if you used Zabbix iso appliance on ESXi, to extend /var/lib/mysql try to use https://gparted.org
gparted GUI allows you to extend your disk in some clicks, takes some seconds.