root@vm1:/media# lvscan ACTIVE '/dev/pve/swap' [15.00 GiB] inherit ACTIVE '/dev/pve/root' [96.00 GiB] inherit ACTIVE '/dev/pve/data' [338.23 GiB] inherit ACTIVE '/dev/san_Backup/lv_Backup' [4.55 TiB] inherit  

root@vm2:/media# lvscan ACTIVE '/dev/pve/swap' [15.00 GiB] inherit ACTIVE '/dev/pve/root' [96.00 GiB] inherit ACTIVE '/dev/pve/data' [338.23 GiB] inherit ACTIVE '/dev/san_Backup/lv_Backup' [4.55 TiB] inherit  

root@vm2:/media# tree . └── san_Backup ├── lost+found ├── VM1 │ └── dump └── VM2 └── dump ├── vzdump-qemu-200-2014_01_09-11_30_02.log └── vzdump-qemu-200-2014_01_09-11_30_02.vma.gz  

root@vm2:/media# tree . └── san_Backup ├── lost+found ├── VM1 │ └── dump │ ├── vzdump-qemu-103-2014_01_09-11_30_05.log │ └── vzdump-qemu-103-2014_01_09-11_30_05.vma.gz └── VM2 └── dump  

root@vm1:/media# tree . └── san_Backup ├── lost+found ├── VM1 │ └── dump │ ├── vzdump-qemu-103-2014_01_09-11_30_05.log │ └── vzdump-qemu-103-2014_01_09-11_30_05.vma.gz └── VM2 └── dump  

[root@mark conf.d]# tail -f /var/log/dovecot-deliver.log Sep 23 16:37:17 pop3-login: Info: Disconnected (no auth attempts): rip=210.x.x.x, lip=210.x.x.x, secured Sep 23 16:37:36 pop3-login: Info: Aborted login (auth failed, 3 attempts): user=<test>, method=PLAIN, rip=210.x.x.x, lip=210.x.x.x, TLS  

[root@m home]# tail -f /var/log/dovecot-deliver.log Sep 23 16:39:15 pop3-login: Info: Login: user=<test>, method=PLAIN, rip=210.y.y.y, lip=210.y.y.y, mpid=22547, TLS Sep 23 16:39:15 pop3(test): Info: Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0  

[root@mark conf.d]# telnet 210.x.x.x 110 Trying 210.x.x.x... Connected to 210.x.x.x. Escape character is '^]'. +OK Dovecot ready. user test +OK pass 123456 +OK Logged in. [root@m home]# telnet 210.y.y.y 110 Trying 210.y.y.y... Connected to 210.y.y.y. Escape character is '^]'. +OK Dovecot ready. user test +OK pass 123456 +OK Logged in.  

Sep 23 16:43:26 imap-login: Info: Login: user=<test>, method=PLAIN, rip=::1, lip=::1, mpid=2230, secured Sep 23 16:43:26 imap(test): Info: Disconnected: Logged out bytes=294/2677  

protocols = imap pop3 lmtp mail_location = maildir:~/Maildir disable_plaintext_auth = no log_path = /var/log/dovecot-deliver.log  

Nếu là bash shell thì có thể dùng Code:

for((i=1;i<=1000000;i++))
do
    # add user here
    user_name="u${i}"
    useradd -s /sbin/nologin $user_name ;
done

Hoặc nếu không được thì thay vòng for bằng "for i in `seq 1 1000000`" 

# while read line; do useradd -s /sbin/nologin $line; done < userlist.txt 

[root@mail backup]# ll -tsh
total 8.2G
2.7G -rw-r--r--  1 root root 2.7G Jun 12 07:13 2013-06-12.zimbra.tgz
8.0K -rw-r--r--  1 root root   20 Jun  8 22:25 2013-06-08.zimbra.tgz
8.0K -rw-r--r--  1 root root   20 Jun  1 22:23 2013-06-01.zimbra.tgz
2.0G -rw-r--r--  1 root root 2.0G May 30 22:02 2013-05-30.zimbra.tgz
8.0K -rw-r--r--  1 root root   20 May 25 23:05 2013-05-25.zimbra.tgz
1.3G -rw-r--r--  1 root root 1.3G May 22 11:26 2013-05-22.zimbra.tgz
1.3G -rw-r--r--  1 root root 1.3G May 21 11:25 2013-05-21.zimbra.tgz
1.2G -rw-r--r--  1 root root 1.2G May 20 22:12 2013-05-20.zimbra.tgz
8.0K drwxr-xr-x 51 root root 4.0K May 13 17:33 zimbra
[root@mail backup]# crontab -l
22 22 * * 6 /root/tools/backup.sh
[root@mail backup]#

[root@mail backup]# cat /root/tools/backup.sh # Stop Zimbra Services su - zimbra -c "zmcontrol stop" #sleep 20 # Sync to backup directory rsync -avHK --delete /opt/zimbra/ /media/backup/zimbra # Restart Zimbra Services su - zimbra -c "zmcontrol start" # Create archive of backed-up directory for offsite transfer # cd /backup/zimbra tar -zcvf /media/backup/$(date +%Y-%m-%d).zimbra.tgz /media/backup/zimbra/*  

exim là MTA, server của bạn gửi nhận mail nhiều lắm mới bị chậm thế. Bạn xem cụ thể làm sao exim lại phải làm việc nhiều thế? cỡ 4CPU cho một mail server sẽ đủ sức xử lý đến cả chục GB/giờ. Không rõ bạn nhiều cỡ nào? 

nature8x wrote:

xin hỏi mọi ngươi gio con zimbra cua minh co ten la chieuvd@mail.vncert1.vn làm sao co the chuyen thanh chieuvd@vncert1.vn đuơc nhỉ.  

Cái này là do hostname của Zimbra server bạn để là `mail.vncert1.vn` nên lúc cài Zimbra tự nhận domain này.  

root@host [~]# uptime 22:18:23 up 23:51, 2 users, load average: 9.21, 15.28, 34.96 root@host [~]# free -m total used free shared buffers cached Mem: 8116 5238 2877 0 438 3147 -/+ buffers/cache: 1652 6463 Swap: 8197 0 8197 root@host [~]# hdparm -Tt /dev/sda /dev/sda: Timing cached reads: 3204 MB in 2.00 seconds = 1603.09 MB/sec Timing buffered disk reads: 50 MB in 3.18 seconds = 15.73 MB/sec root@host [~]#  

root@cpanel [~]# vi /etc/my.cnf [client] port=3306 socket="/var/lib/mysql/mysql.sock" [mysqldump] quick max_allowed_packet=16M default-storage-engine=MyISAM #innodb_file_per_table=1 [mysql] no-auto-rehash [myisamchk] read_buffer=2M write_buffer=2M sort_buffer_size=128M key_buffer=128M [mysqlhotcopy] interactive-timeout [mysqld] max_connect_errors=100 connect_timeout=60 server-id=1 skip-networking character-set-server=utf8 table_cache=1024 read_rnd_buffer_size=4M skip-federated socket="/var/lib/mysql/mysql.sock" bind-address=127.0.0.1 log-slow-queries="/var/log/mysql-slow.log" long_query_time=5 default-storage-engine=MyISAM #innodb_file_per_table=1 thread_concurrency=8 query_cache_size=32M thread_cache_size=8 myisam_sort_buffer_size=64M key_buffer=384M skip-external-locking skip-character-set-client-handshake read_buffer_size=1M port=3306 sort_buffer_size=1M max_allowed_packet=256M [isamchk] read_buffer=2M write_buffer=2M sort_buffer_size=128M key_buffer=128M