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KK Patel's questions

Martin Hope
KK Patel
Asked: 2013-06-13 20:25:49 +0800 CST
  • 0

I want to backup mysql databases to another new server. I don't want to use mysql replication and mysqldump for backup as they are using higher cpu and higher i/o on server. I tried mysqlhotcopy to send databases files to another server into /var/lib/mysql/database but after backup new server shows empty database. Help me friends to find solution. Is there any way to send database raw files using rsync or scp and get recovered database ?

mysql
Martin Hope
KK Patel
Asked: 2013-03-28 23:40:31 +0800 CST
  • 14

When I execute following command to get cpu usage , I get nice + user cpu usage.

top -b -n1 | grep "Cpu(s)" | awk '{print $2 + $4}'

Output:

14.5

Here I am getting problem is that the output depends on top command thus it doesn't change instantly as top command. So I am not getting correct cpu instantly. It gives same output and not changing.

I want to get real-time cpu usage in output. Please help me to improve my command.

command-line
Martin Hope
KK Patel
Asked: 2012-12-21 02:52:50 +0800 CST
  • 0

I am new to bash script and want to create bash script that moves some days old files between source and destination as per days defined in script.

When I run this script I get error

find: paths must precede expression: mv Usage: find [-H] [-L] [-P] [-Olevel] [-D help|tree|search|stat|rates|opt|exec] [path...] [expression]

#!/bin/bash

echo "Enter Your Source Directory"
read soure

echo "Enter Your Destination Directory"
read destination 

echo "Enter Days"
read days




   find $soure -mtime +$days  mv $soure $destination {} \;

  echo "Files $days old moved from $soure to $destination"

What's missing or wrong ???? please help me to create this script.

bash
Martin Hope
KK Patel
Asked: 2012-11-10 21:27:46 +0800 CST
  • 9

I am going to deploy Ubuntu server having following servers on it:

  • Bind server
  • DHCP server
  • LAMP Server
  • OpenSSH Server
  • Ldap server
  • Mongodb database
  • FTP server
  • Mail server
  • Samba server
  • NFS server
  • In the future, I want to set up Openstack for PAAS.

I currently have a Raid 5 filesystem with 10TB storage.

How should I set up my partition scheme?

I am looking to ensure that I don't have problems in future and that storage size can be easily expanded. Can you suggest a partition scheme giving specific percentage of storage to partitions like /, /boot, /var, /etc?

server
Martin Hope
KK Patel
Asked: 2012-10-20 20:40:07 +0800 CST
  • 2

I had 12.04 with my dual boot system. Yesterday I downloaded Ubuntu 12.10 make bootable USB and choose Upgrade option in Installer. After installation Grub failed to boot my machine. I tried following to fix grub bootloder . Same problem I fixed with Ubuntu 12.04 using live USB but this solution not work for Ubuntu 12.10. Now coming at exactly where this solution goes fail.

I followed this steps after booting Live USB and opening terminal.

1) sudo fdisk -l to see where Linux is installed

2) sudo mount /dev/sda9 /mnt where sda9 is my linux partition

3) sudo mount /dev/sda9 /mnt/boot

4) sudo mount --bind /dev /mnt/dev

5) sudo chroot /mnt (No problems with this steps done perfectly)

6) grub-install /dev/sda when I type command I got error that

source_dir doesn't exist Please specify --target or --directory

How can I solve this?

grub2
Martin Hope
KK Patel
Asked: 2012-08-20 20:35:21 +0800 CST
  • 0

My Server has two NIC, One is connected to the Internet Service provider with dhcp ip (dynamically change) given by ISP and other NIC is connected with local Switch with 192.168.1.1 IP. Now I want to set up network with such that computers connected with LAN can connect Internet through server. Server will be work as a router. How should I make such configuration that All traffic passed by NIC 2 within a single IP and ported at IP address of NIC 1 which is Dynamically given by My ISP?

Thanks in advance.

server