Chawarong's Blog on Stuff for Hacker

This is the instruction to create a mount point on CentOS 6.4

Reference
NFSv4Howto

On a server

1. Check if nfs is installed

    $ rpm -qa | grep nfs  
    $ service nfs status`
   

2. Add a mount point

    $ vi /etc/exports
   

In the above line, is replaced by the directory to be exported, is the name or IP address of the system to which access is being granted and represents the restrictions that are to be imposed on that access (read only, read write etc).

format: <export> <host1>(<options>) <host2>(<options>)…

example:
/datafiles 192.168.2.38(ro)
/home/demo (rw)
/tmp (rw,sync)
/vol1 192.168.2.21(ro,sync)

1. The directories must be exported.

    $ exportfs -a
   

   To view exported file system

    $ exportfs
   

2. Turn on nfs at start up

    $ chkconfig nfs on
    $ chkconfig --list nfs
    $ service nfs start
   

Note: for each options available, read this link

On a client

1. Make a local folder

    $ mkdir /myfolder
   

2. Issue this command

    $ sudo mount -t nfs -v [ip or hostname]:/myfolder /myfolder
   

Troubleshooting

• Most of the time, keep an eye on /var/log/message. This is a typical error when nfs rejects a client connect

    rpc.mountd[30666]: refused mount request from x.x.x.x for /ster_storage (/ster_storage): illegal port 64877
  

  it’s because it can’t resolve name of the client connected to it. NFS typically wants name resolution for clients connecting to it, and if it can’t get that, then it will deny access.

  An entry in the hosts file is usually sufficient for me.

• Check with firewall and SELinux

    $ iptables -L  
    $ getenforce  
  

• On Mac client, it connects to NFS using insecure port. Using the insecure option allows clients such as Mac OS X to connect on insecure ports. link

    rpc.mountd[31257]: authenticated mount request from x.x.x.x:1017 for /foster_storage (/foster_storage)
  
  
    $ vi /etc/exports
    /datafiles 192.168.0.0/16(ro,insecure)
  

Allow non localhost db user to connect

1. allow binding from other hosts other than localhost

    vi /etc/mysql/my.cnf
      remove bind-address = 127.0.0.1
   

2. check and see the current privileges on hosts

    mysql> use mysql;
    mysql> select * from user;
      see if there is host = localhost and user = root which will not allow non localhost to access
   

3. grant the user with % (all hosts)

    mysql> GRANT ALL ON *.* TO root@'%' IDENTIFIED BY '[password same as root@local e.g. 5678
    # e.g. GRANT ALL ON *.* TO root@'%' IDENTIFIED BY '5678';
   
    mysql> (optional) delete from user where host = 'localhost' and user = 'root';
    mysql> flush privileges;
   

Create a new user

1. create a user

    mysql> CREATE USER 'myuser'@'localhost' IDENTIFIED BY 'mypass';
    mysql> CREATE USER 'myuser'@'%' IDENTIFIED BY 'mypass';
   

2. grant all privileges

    mysql> GRANT ALL ON *.* TO 'myuser'@'localhost';
    mysql> GRANT ALL ON *.* TO 'myuser'@'%';
   

or grant just enough

    mysql> GRANT DELETE,INSERT,SELECT,UPDATE on mydatabase.* TO 'myuser'@'localhost';       
    mysql> flush privileges;

1. to see the privileges

    mysql> SHOW GRANTS FOR mysql;
   

1

puts "Awesome!" unless lame

The problem with pingdom.

My money’s in that office, right? If she start giving me some bullshit about it ain’t there, and we got to go someplace else and get it, I’m gonna shoot you in the head then and there. Then I’m gonna shoot that bitch in the kneecaps, find out where my goddamn money is. She gonna tell me too. Hey, look at me when I’m talking to you, motherfucker. You listen: we go in there, and that nigga Winston or anybody else is in there, you the first motherfucker to get shot. You understand?

Blockquote is what goes inside this block here would you believe that bullshit?

Well, the way they make shows is, they make one show. That show’s called a pilot. Then they show that show to the people who make shows, and on the strength of that one show they decide if they’re going to make more shows. Some pilots get picked and become television programs. Some don’t, become nothing. She starred in one of the ones that became nothing.

The path of the righteous man is beset on all sides by the iniquities of the selfish and the tyranny of evil men. Blessed is he who, in the name of charity and good will, shepherds the weak through the valley of darkness, for he is truly his brother’s keeper and the finder of lost children. And I will strike down upon thee with great vengeance and furious anger those who would attempt to poison and destroy My brothers. And you will know My name is the Lord when I lay My vengeance upon thee.

Your bones don’t break, mine do. That’s clear. Your cells react to bacteria and viruses differently than mine. You don’t get sick, I do. That’s also clear. But for some reason, you and I react the exact same way to water. We swallow it too fast, we choke. We get some in our lungs, we drown. However unreal it may seem, we are connected, you and I. We’re on the same curve, just on opposite ends.

Do you see any Teletubbies in here? Do you see a slender plastic tag clipped to my shirt with my name printed on it? Do you see a little Asian child with a blank expression on his face sitting outside on a mechanical helicopter that shakes when you put quarters in it? No? Well, that’s what you see at a toy store. And you must think you’re in a toy store, because you’re here shopping for an infant named Jeb.

Testing!

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