I've toyed with buliding a dedicated SSH client box at the office off and on, in hopes that every time my Windows box crashes, or re-activates and runs automatic updates, I don't have to re-login to a hojillion boxes all over again.
My first attempt failed miserably. I just couldn't get my sessions or programs to stay open on the host box using Xming with, or without an ssh tunnel between reboots / crashes, et al.
The following attempt was far from elegant, but it was GoodEnough™, and consisted of, Xorg, fluxbox, and VNC Server. I'm sure I don't need to go into details as to what's wrong with this solution. Besides which, I was never really happy with the setup.
For version 3, I broke down and read the man-page for tmux, which, in a nutshell, is basically screen except that it doesn't suck. Go figure, the best solution's the simplest one.
I also finally built up the nerve to migrate my minecraft server. Moved it off the barebones Debian VM it was running on, to an OpenBSD VM. I'm not sure why, but I was surprised at how much better the server runs on the new host. I suppose it could have something to do with dropping 100 processes.
Haven't touched Java since my last post... the thought of building a parser and hierarchical syntax checks feels somewhat daunting.
Been using phpipam at the office since around v0.5. Updated to 0.9 shortly after it came out. The 0.9 release includes up/down/last-seen host checks. For a free, open-source tool, it's pretty epic.
That said, setting up the scanning script's not documented anywhere obvious yet that I've been able to find, and a little bit fiddly. Lest I forget what I did...
Some values you might want to change from defaults.
-----e@insight:~ $ diff -u /usr/local/src/phpipam-0.9/functions/scan/config-scan.php \
/var/apache2/htdocs/phpipam/functions/scan/config-scan.php
--- /usr/local/src/phpipam-0.9/functions/scan/config-scan.php Thu Jan 23 19:11:50 2014
+++ /var/apache2/htdocs/phpipam/functions/scan/config-scan.php Mon Dec 30 23:09:08 2013
@@ -8,11 +8,11 @@
//general configs
$scanMaxHosts = 32; // maximum number of scans per once
-$scanDNSresolve = true; // try to resolve DNS name
+$scanDNSresolve = false; // try to resolve DNS name
$scanIPv6 = false; // not yet
//configs
-$MAX_THREADS = 256; // set max concurrent threads
+$MAX_THREADS = 128; // set max concurrent threads
// ping path
$pathPing = "/sbin/ping";
-----e@insight:~ $ diff -u /usr/local/src/phpipam-0.9/functions/scripts/pingCheck.php \
/var/apache2/htdocs/phpipam/functions/scripts/pingCheck.php
--- /usr/local/src/phpipam-0.9/functions/scripts/pingCheck.php Thu Jan 23 19:11:50 2014
+++ /var/apache2/htdocs/phpipam/functions/scripts/pingCheck.php Fri Dec 27 13:31:56 2013
@@ -11,10 +11,10 @@
*/
// config
-$email = true; //set mail with status diff to admins
+$email = false; //set mail with status diff to admins
$emailText = false; //format to send mail via text or html
//$wait = 500; //time to wait for response in ms
-$count = 1; //number of pings to send
+$count = 2; //number of pings to send
// response
$stateDiff = array(); //Array with differences, can be used to email to admins
By default, no subnets are setup to scan. Poke the bit for any relevant subnets to save updating them manually.
Lucky last, run it in a sensible users crontab. I wound up dropping the priority on this with nice, since the scads of processes I chose to let it spawn tends to cause a noticeable degradation to other http childs.
#mm hh md mo wd
30 * * * * /path/to/php /path/to/phpipam/functions/scripts/pingCheck.php
And away she goes.
