… mammoth cave …
I just love numbers, so couldn’t miss this one :-)
How you feel about different numbers? What’s your favorite one?
My favorite thing about numbers is the joke where Halloween (31 October) is equal to Christmas (25 December), as
31 October = 31 Oct = 31 octal = 25 decimal = 25 Dec = 25 December ;-)
But there are many more interesting things out there.
Recently I wrote a post about ClusterSSH which I found very handy to use when dealing with a bunch of similar servers for doing same thing on all of them in parallel. Today I was asked by my colleague if there is anything similar to that, but for Windows (controlling multiple SSH/Telnet clients from Windows desktop) and after a bit of googling I found PuTTYSC: a small, but very handy tool for controlling multiple instances of PuTTY ssh/telnet clients. Just specify which running instances you want to control and send a command to all of them at ones.
I haven’t personally tested this software as I don’t have Windows running somewhere near me, but I checked the screenshots on Google Images and the think looks pretty nice and easy to use.
ClusterSSH – a perfect tool for dealing with cluster of servers:
ClusterSSH is a tool for making the same change on multiple servers at the same time. The ‘cssh’ command opens an administration console and an xterm to all specified hosts. Any text typed into the administration console is replicated to all windows. All windows may also be typed into directly.
This tool is intended for (but not limited to) cluster administration where the same configuration or commands must be run on each node within the cluster. Performing these commands all at once via this tool ensures all nodes are kept in sync.
There are whole lot of different automation tools these days and there are bunch of common practices, but sometimes we just need to deal with servers manually. For the past month I am dealing a few clusters of similar servers where I need to run same things and while the cluster is still under construction, I have to put more things on each node and do it manually. Today I got too lazy to login to each one to run few commands so I start googling around for a nice solution. In my case, I can’t use something like pssh, as my commands involve typing in passwords and doing some interactive things, so cluster ssh is just the right tool! As per description from their web site – it opens terminal per each server as well as gives a place to type a command that will be replicated to all those terminals. Very handy and strongly advisable to any system administrator. In addition it allows to define different clusters in a config file to be referred to later on.
Just a short update on what is going up.
First of all had a week of vacations with lots of beer, good food, fun and so. These days a lot of work and interesting projects.
Playing around with Zabbix – looks really nice, like it a bit more then Nagios, which I used a lot in the past years, but still missing few things, which I will probably mention in a separate post about Zabbix later on, when I have more experience.
Got to learn a lot of new things about networking in general (reading RFCs really helps) as well as networking in Linux. Feel like more things are coming for sure and I like this. Also found a bunch of nice tools to troubleshoot different problems.
In short – all is fine, but working for an IT company with lots of interesting projects, experienced people around and friendly team keeps me pretty busy.
Hopefully will come up with few detailed technical posts later on, when all other things will be sorted out.
Widgetsoid is yet another handy app for Android, allowing to have switch panel in notification bar. All the time I saw XDA firmware I was feeling jealous about those nice switches in the notification bar, that allowed one to toggle WiFi, 3g, sound and so on. These features are used all the time, so they have to be somewhere close enough, but having a standard power panel on the screen takes too much space.
Finally I found what I was looking for. Very flexible tool that did all I need that much. You can use it for multiple notification toggle switch bars, or even for normal widget panels. Customize buttons, icons, colors and whatever else. Very handy and strongly advised for people on default firmware.
The only reason I haven’t switched to XDA firmware is that I have Nexus, that receives updates from Google directly. BTW got Android 4.1.2 update yesterday. Nothing special or something I can note, but you know that feeling :-)