Author: old_wp_importer

Mark Ames on Greece:

See the guy in the photo there, dangling an ax from his left hand? That’s Greece’s new “Minister of Infrastructure, Transport and Networks” Makis Voridis captured back in the 1980s, when he led a fascist student group called “Student Alternative” at the University of Athens law school.

David Edelstein on the Rum Diary:

Rollicking car chases, colorful carousing in tropical settings, psychedelics jags with outlandish special effects: It should be just what the Doctor of Gonzo ordered. But Robinson doesn’t have the gonzo touch. Even if his Withnail & I featured a spectacularly dissolute antihero, it was soaked through with cold rain and the melancholy specter of alcoholism and failure. To work, The Rum Diary would need to make the case for all the excesses that killed Thompson, and Robinson’s heart (or talent) isn’t in it.

[why Edelstein? Because Sheila O’Malley recommended him, entirely accurately, as “best when he dislikes something”

People, I lack music.

My office in Berlin was in a bar, above rehearsal rooms, with an electro-heavy playlist constantly on the stereo. There was enough music around that I didn’t need to find my own. So, aside from the odd medicinal piece for a particular mood, I just soaked up whatever was in the air already.

My current office is more mundane: choose headphones, or choose silence. I can’t just sink into the emotional rhythm of other people’s music, so I need to create my own or let the entire day be identical.

Still, I’m not really asking for music recommendations. I really want to find

music journalists

. Or music blogers, music essayists, whatever.

I may draw the line at twitter

. Suggestions?

Ones I already like:

• Simon Reynolds (despite his habit of concealing his articles across a dozen half-forgotten blogs)
• Velvet Coalmine
• K-punk,
  
  Splintering Bone Ashes, and the rest of the hauntology crowd. Though they’re more philosophy than music, and in any case seem mostly to have given up the ghost.
• Sasha Frere-Jones (though I wish he were a bit less tastefully even-handed)
• 
  um…there most be some more? Right?
  

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Reminder that today is my belated housewarming, and my housemate’s birthday party. Location is 8A cheshire road, london n22 8JJ. Turn up any time from early evening — with friends/partners/etc as you see fit.

Should you need it, my phone number is 07935 589442

Laurie on sexy women we love to hate:

Sometimes it’s Lady Gaga, but Gaga is weird and confusing and you never quite know when she’s going to turn up dressed as a man, a lobster or all three volumes of Marx’s Das Kapital at once, as opposed to the standard alien vinyl barbie look of which certain sections of the curtain-twitching middle classes love to disapprove.

[warning: technical wonkery]

pssh is a godsend when you’re working with a number of servers. Pssh lets you run the same command on many different computers via ssh, collating the results for you.

The man page says pssh is “

most useful for operating on clusters of homogenously-configured hosts.

“.

But to my mind, where it really shines is doing diagnostics over a number of machines.

I was recently called in to fix up a problem like this. A website had gone down, the sysadmin was missing, and nobody really new which of seventy-odd machines was responsible. So I was flailing around in the dark. All I had was the shared root password, and a client very keen for things to start working Real Soon Now.

My first tool out of the box was nmap. This lets me figure out which servers we have around::

  root@dv06x:/home/dan# nmap -sP 10.10.22.0/24
Starting Nmap 4.20 ( http://insecure.org ) at 2011-05-29 15:03 PDT
Host 10.10.22.1 appears to be up.
MAC Address: 00:04:23:E1:F8:DF (Intel)
Host 10.10.22.5 appears to be up.
MAC Address: 00:04:23:E1:F8:DF (Intel)

Here I’m telling nmap to ping every machine with an IP address (internal to the data centre) of 10.10.22.XXX — that is, which shares the first 24 bits of its IP address with 10.10.22. [why 10.10.22? because ifconfig showed me the IP for the firewall server I was first logged in to, and it began with 10.10.22.

Now, let’s pull a list of IPs out of there. I couldn’t find an option in nmap to just print the IP address, so let’s do it with perl:

root@dv06x:/home/dan# nmap -sP 10.10.22.0/24 | grep "appears to be up" | perl -pi -e 's/.*?((d+.){3}d+).*/1/' > servers.txt 2>/dev/null
root@dv06x:/home/dan# cat servers.txt
10.10.22.1
10.10.22.5
10.10.22.6
...

Now we have these servers, we can try ssh’ing into them. First, we need password-less ssh access. Here’s an explanation. First we generate a keypair:

ssh-keygen -t rsa

This generates keys in ~/.ssh/id_rsa (private) and ~/.ssh/id_rsa.pub (public). Now we must copy the public key to every other server, appending it to the file ~/.ssh/authorized_keys.

scp doesn’t support appending. One way would be to first scp to a temp file, then log in and append that file to ~/.ssh/authorized_keys.

But that’s a lot of excess typing, if you’re doing it seventy times. Instead we can use pipes with cat:

cat ~/.ssh/id_rsa.pub | ssh root@10.10.22.6 "cat >> ~/.ssh/authorized_keys"

Now we need to do this for every machine. Let’s do it the semi-manual way: pssh won’t save much time, since we need to enter passwords and accept fingerprints anyway:

root@dv06x:/home/dan# for server in `cat servers.txtc`
> do
cat ~/.ssh/id_rsa.pub | ssh root@$server "cat >> ~/.ssh/authorized_keys"
> done

Now we should be able to connect to any of them without a password:

root@dv06x:~# ssh root@10.10.22.23
Last login: Mon May 16 04:16:41 2011 from 10.10.22.5
Linux xn03 2.6.18-xen #1 SMP Fri May 18 16:01:42 BST 2007 x86_64

Now is when pssh comes into its own. The man page explains basic usage:

parallel-ssh [OPTIONS] -h hosts.txt prog [arg0...]

That is, you give it a list of hosts in a file, and a command to execute on hte command-line. It’ll ssh into each host in parallel, and run the command everywhere. I’ll also use the

-P

option, so that we can see the output directly on the terminal.

Let’s start with the

uptime

command. This prints out how long the server has been up — as well as, more interestingly, the current load:

root@dv06x:/home/dan# pssh -P -h servers_all_ip uptime
...
10.10.104.156:  16:03:42 up 53 days, 22:46,  0 users,  load average: 0.00, 0.02, 0.26
[69] 16:21:56 [SUCCESS] 10.10.104.156
10.10.22.101:  16:03:18 up 2 days,  3:47,  1 user,  load average: 69.52, 70.14, 70.21
[70] 16:21:56 [SUCCESS] 10.10.22.101
10.10.104.146:  16:03:12 up 33 days, 15:25,  0 users,  load average: 1.24, 1.22, 1.19
[71] 16:21:56 [SUCCESS] 10.10.104.146
10.10.104.156:  16:03:42 up 53 days, 22:46,  0 users,  load average: 0.00, 0.02, 0.26
[69] 16:21:56 [SUCCESS] 10.10.104.156
10.10.22.101:  16:03:18 up 2 days,  3:47,  1 user,  load average: 69.52, 70.14, 70.21
[70] 16:21:56 [SUCCESS] 10.10.22.101
10.10.104.146:  16:03:12 up 33 days, 15:25,  0 users,  load average: 1.24, 1.22, 1.19
[71] 16:21:56 [SUCCESS] 10.10.104.146

It’s slightly irritating not to have the output matched up with the results, but it’s already tellig us something useufl. 10.10.22.101 has an immense load, and has been recently rebooted. That’s probably somewhere to concentrate our attention

We can also gather some information about what operating systems we’re dealing with.

lsb_release -a

will get us that:

root@dv06x:/home/dan# pssh -P -h servers.txt "lsb_release -a"
...
10.10.22.12: Distributor ID:    Ubuntu
Description:    Ubuntu 7.10
Release:        7.10
Codename:       gutsy

Much more can be done along these lines, but I’ll leave it there for now

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Practical advice time, folks: how do I find interesting films showing in London cinemas?

I’m particularly interested in older and moderately obscure films — the kind that will turn up over the course of a year, but that I’ll miss unless I inhale a listings magazine every week.

Does there exist a website that can take a wish-list of films, and email me whenever one of them is on in London? That seems like such an obvious and potentially-profitable concept that somebody

must

already have built it, but I can’t find it.

Relatedly, does anybody want to come see some films with me?

George Osborne supposedly used to regularly snort cocaine with a sex worker. Andy Coulson’s NotW was on hand to damp down the story, hacking the escort’s phone, attacking her personally, and printing an editorial sympathetic to Osborne. Hypocritical Tory saved by friends in high places, what’s new?

But what I love is how in the midst of all this, she still manages to put the boot into Hague:



At the time [Osborne] was working for William Hague. I remember that vividly because he called William Hague insipid and I didn’t know what the word meant. I do now.

[FWIW I find Hague much less insipid than the average politician, and in fact the current cabinet show up just how insipid the New Labour minsters were. Osborne, by contrast, has no redeeming features I’ve yet been able to find]