- Target 파티션 구성하기
># fdisk /dev/xvdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0xcce44d25.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
\\Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
\\WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
\\Command (m for help): n
Command action
e extended
p primary partition (1-4)
p (입력)
Partition number (1-4): 1 (입력)
First cylinder (1-2080500, default 1):
Using default value 1 (입력)
Last cylinder, +cylinders or +size{K,M,G} (1-2080500, default 2080500):
Using default value 2080500
\\Command (m for help): w (입력)
The partition table has been altered!
\\Calling ioctl() to re-read partition table.
Syncing disks.
- DRBD구성하기
># cat /etc/drbd.d/drbd.res
resource drbd0
{
startup {
wfc-timeout 30;
outdated-wfc-timeout 20;
degr-wfc-timeout 30;
}
\\ syncer {
rate 1000M;
verify-alg sha1;
}
\\ on web1 {
device drbd0;
disk /dev/xvdb1;
address {노드1번IP}:7789;
meta-disk internal;
}
\\ on web2 {
device drbd0;
disk /dev/xvdb1;
address {노드2번IP}:7789;
meta-disk internal;
}
}
- DRBD 메타 데이터 구성 후 서비스 시작
># drbdadm create-md drbd0
># /etc/init.d/drbd start
- Disk Sync 시작 (1번 서버에서 수행) (DRBD 8.x 해당)
># drbdadm -- --overwrite-data-of-peer primary drbd0
- drbd 실행 후 primary 지정 (1번서버에서 수행)
># drbdadm invalidate drbd0
># drbdadm primary --force drbd0
- 데이터 동기화 상태 확인DRBD 서비스 시작 (DRBD 8.x 해당)
># cat /proc/drbd
version: 8.4.5 (api:1/proto:86-101)
GIT-hash: 1d360bde0e095d495786eaeb2a1ac76888e4db96 build by root@web2, 2015-03-09 14:49:34
0: cs:SyncTarget ro:Secondary/Primary ds:Inconsistent/UpToDate C r-----
ns:0 nr:491520 dw:487424 dr:0 al:0 bm:0 lo:16 pe:0 ua:16 ap:0 ep:1 wo:f oos:9986956
[>....................] sync'ed: 4.7% (9752/10228)M
finish: 0:04:05 speed: 40,616 (40,616) want: 102,400 K/sec
- 연결상태 확인 (DRBD 9.0)
$> drbdadm status drbd0
drbd0 role:Primary
disk:UpToDate
repotx-gitlab-dev02.tx.skp role:Secondary
replication:SyncSource
peer-disk:Inconsistent done:8.53
- DRBD의 Primary 선언 (master 노드수행)
$> drbdadm primary drbd0
$> cat /proc/drbd *Primary/Secondary으로 표기되어 있으면 됨
version: 8.4.5 (api:1/proto:86-101)
GIT-hash: 1d360bde0e095d495786eaeb2a1ac76888e4db96 build by root@techtx-base-dev02, 2019-04-26 17:54:37
0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
ns:0 nr:0 dw:0 dr:664 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
- 파일시스템 생성 (master 노드수행)
># mkfs.ext4 /dev/drbd0
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
327680 inodes, 1310595 blocks
65529 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=1342177280
40 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736
\\Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
\\This filesystem will be automatically checked every 26 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
- 마운트 후 파일 생성 (master 노드수행)
$> mount /dev/drbd0 /mnt/
$> df -h /mnt
Filesystem Size Used Avail Use% Mounted on
/dev/drbd0 4.8G 10M 4.6G 1% /mnt
- 임의 파일 생성 (master 노드수행)
$> touch 123
$> ls -l 123
-rw-r--r-- 1 root root 0 Apr 29 13:04 123
- 마운트 해제 및 DRBD의 secondary 선언 (master 노드수행)
$> umount /mnt
$> drbdadm secondary drbd0
$> cat /proc/drbd
version: 8.4.5 (api:1/proto:86-101)
GIT-hash: 1d360bde0e095d495786eaeb2a1ac76888e4db96 build by root@techtx-base-dev02, 2019-04-26 17:54:37
0: cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate C r-----
ns:1235836 nr:0 dw:1235836 dr:1409 al:307 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
- DRBD의 Pimary 선언 (slave 노드 수행)
$> drbdadm primary drbd0
$> cat /proc/drbd
version: 8.4.5 (api:1/proto:86-101)
GIT-hash: 1d360bde0e095d495786eaeb2a1ac76888e4db96 build by root@techtx-base-dev05, 2019-04-26 17:54:29
0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
ns:4 nr:1235836 dw:1235840 dr:1017 al:1 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
- 파일시스템 마운트 후 master노드에서 생성한 파일 확인 (slave 노드 수행)
># mount /dev/drbd0 /mnt/
># ls -l /mnt/
total 1000020
-rw-r--r-- 1 root root 0 Apr 29 13:04 123
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