Skip to main content
๐Ÿ““ Tibero Online Manual Click here ๐Ÿ““

Search

Welcome to Tibero GTS!

How to Configure TAC on Linux Without CFS or Veritas

Document Type | Technical Information

Field | Administration/Configuration

Applicable Product Version | Tibero 7

Document Number | TADTI227

 

Overview

This document explains how to configure Tibero TAC (Tibero Active Cluster) based on shared storage without using CFS or Veritas in a Linux environment.

TAC configuration proceeds through the following steps:

  1. Storage (LUN) allocation
  2. Multipath configuration
  3. Check Multipath UUID
  4. Raw Device configuration
  5. TAC installation

โ€ป This document focuses mainly on steps 3 (Check Multipath UUID) and 4 (Raw Device configuration).

 

Configuration Environment

  • OS: Rocky Linux 9.6

  • DB: Tibero 7 (7.2.4, Build 305455)

 
 

Method

1. Storage (LUN) Allocation

Request LUNs through the storage engineer.

  • control file: 100MB ร— 2
  • cmfile: 100MB
  • system tablespace: 4GB
  • other data areas (vary depending on environment)

2. Multipath Configuration

Configure Multipath to set up shared disks based on dual paths.

  • Configure iSCSI Target / Initiator
  • Install and enable the multipath package

โ€ป For detailed procedures, refer to the attached file
โ†’ (Attachment: Multipath Configuration)

 

3. Check Multipath UUID

After configuring Multipath, verify on each node that the same LUN is referenced.

multipath -ll

[Node1]

[root@localhost ~]# multipath -ll

mpathb (360014052b870157782f477d8159ae091) dm-2 LIO-ORG,lun_20g

size=20G features='0' hwhandler='1 alua' wp=rw

|-+- policy='service-time 0' prio=50 status=active

| `- 34:0:0:0 sdb     8:16  active ready running

`-+- policy='service-time 0' prio=50 status=enabled

  `- 35:0:0:0 sdc     8:32  active ready running

 

[Node2]

[root@localhost ~]# multipath -ll

mpathb (360014052b870157782f477d8159ae091) dm-2 LIO-ORG,lun_20g

size=20G features='0' hwhandler='1 alua' wp=rw

|-+- policy='service-time 0' prio=50 status=active

| `- 34:0:0:0 sdc     8:32  active ready running

`-+- policy='service-time 0' prio=50 status=enabled

  `- 35:0:0:0 sdb     8:16  active ready running

Confirmed same UUID on both nodes

 

4. Raw Device Configuration

4-1) Check the created partition device files

ls -l /dev/mapper/mpath*

 

4-2) Create /dev/raw directory (if it does not exist)

sudo mkdir -p /dev/raw

 

4-3) Create symbolic links for each partition as rawN

sudo vi /etc/udev/rules.d/99-raw.rules

# Remove existing raw links if any 

rm -f /dev/raw/raw*


# Link mpathc1 ~ mpathc20 to raw1 ~ raw20
for i in {1..20}; do
 ln -sf /dev/mapper/mpathc${i} /dev/raw/raw${i}
done

# Set ownership/permissions for Tibero account usage
chown tibero:dba /dev/raw/raw*
chmod 660 /dev/raw/raw*

4-4) Verify configuration

[root@localhost dev]# ls -l /dev/raw/raw*
lrwxrwxrwx. 1 tibero dba 19 Dec 23 13:55 /dev/raw/raw1 -> /dev/mapper/mpathc1

 

5. TAC Installation

Proceed with TAC installation after Raw Device configuration is complete.

Note

The attached file provides a detailed guide on Multipath configuration (Step 2).

 

 

Related to