mik's questions

I need to access an old IBM blade center's KVM. It uses Java and asks for 1.4.02_08 and above.

I tried with a Mac (JM 7) and two PCs (win7, JM6) to no avail. I installed the old java but it won't run the old version on a PC.

What OS/Browser/JVM combination should I use? How do I run multiple Java versions side by side?

I need to create a report of datastore capacity, provision and usage. What is the best tool to do that? Vcenter API seems more concerned with creating VMs and such.

Is this the right tool for the job?

I am installing 20 servers.

On each, with a specific user I created a dsa key.

I did cat key.pub from each server onto ~/.ssh/authorized_keys of the first server

I verified all servers can log in without password to the first server.

Using puppet, I copied the .ssh/authorized_key from the first server to all the other servers.

Permissions are the same, 600

I can't log in automatically; it still works from the servers to the first - but not to any other. I log in as the user, ssh to the other servers - and it asks me for password.

I restarted sshd service, but to no avail. /etc/ssh/sshd_config is the same on the first server and all the others.

This is RHEL6.

Any ideas? Did I do something wrong?

This is the puppet file; it works now -- i had the root as 775

file {"/home/user":
    owner   => user,
    group   => user,
    ensure  => directory,
    mode    => 755,
}

file {"/home/user/.ssh":
    owner   => user,
    group   => user,
    ensure  => directory,
    mode    => 700,
}

file {"/home/user/.ssh/authorized_keys":
    owner   => user,
    group   => user,
    ensure  => file,
    mode    => 600,
    source => "puppet://puppet/files/user_sshkeys.txt";
}

Is there a file system that stores files under a hash so there are no duplicates? It can be under any operating system. I know Git does that, but I'm looking for something that can run in real-time.

I have a few servers running WordPress. I am using IIS with MySQL. One keeps faulting; I reset the MySQL server and it works well for a few hours and after that I start getting "Error establishing a database connection".

The MySQL is up and I can log in to it as root or regular user, locally or remotely. I see nothing special in SHOW PROCESSLIST;, but the aborted connections do increase.

I'm running on a Win2008R2; my other servers are MUCH busier - the one that is not working is my QA server. I copied the my.ini configuration from the working servers to make sure this server can handle as many connections (initially it was set much lower as it is not production; in the installation I also chose DEV server and not production server), but it doesn't help. Another thing that helps is mysqladmin flush-hosts from the command line.

Where should I look? What should I do?...

I want to remove nodes from my cluster gracefully. I added the following to my hadoop-site.xml:

<property>
  <name>dfs.hosts.exclude</name>
  <value>/etc/hadoop/conf.dist/dfs.hosts.exclude</value>
  <final>true</final>
</property>

I'm adding a node to be removed to the file and executing

hadoop dfsadmin -refreshNodes  

as root, but I get

refreshNodes: org.apache.hadoop.fs.permission.AccessControlException: Superuser privilege is required  

The mod on the HDFS partition is 777.

Running Cloudera's hadoop-ec2 distribution, ver 0.18