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Latest 7 Posts
Oracle Database 11gR2 - Get the dependencies right ...
Tue, Dec 12th 2017 28
DB2 on Windows - where does the db2nodes.cfg file live ?
Thu, Dec 7th 2017 52
Windows Server 2012 - Ooops, I locked my account
Thu, Dec 7th 2017 134
Nagios and NRPE - There's more ...
Wed, Dec 6th 2017 68
Nagios Remote Plugin Executor (NRPE) and xinetd on Red Hat Enterprise Linux
Wed, Dec 6th 2017 49
WebSphere Liberty Profile - Monitoring via JMX over REST using Jython
Wed, Dec 6th 2017 44
WebSphere Liberty Profile - Snooping About
Wed, Dec 6th 2017 42
Top 10
Windows Server 2012 - Ooops, I locked my account
Thu, Dec 7th 2017 134
Nagios and NRPE - There's more ...
Wed, Dec 6th 2017 68
Hmmm, macOS Sierra and XQuartz and X11
Thu, Oct 27th 2016 57
Mozilla Firefox Quantum - Suppressing Autoplay Videos
Wed, Dec 6th 2017 57
Executing external Python/Jython scripts from within WebSphere Application Server's wsadmin tool
Thu, Feb 27th 2014 56
DB2 on Windows - where does the db2nodes.cfg file live ?
Thu, Dec 7th 2017 52
Nagios Remote Plugin Executor (NRPE) and xinetd on Red Hat Enterprise Linux
Wed, Dec 6th 2017 49
Using Nagios to monitor IBM HTTP Server and IBM WebSphere Liberty Profile
Tue, Dec 5th 2017 45
Monitoring WebSphere Liberty Profile via JMX and REST over HTTPS
Tue, Dec 5th 2017 45
WebSphere Liberty Profile - Monitoring via JMX over REST using Jython
Wed, Dec 6th 2017 44




Recent Blog Posts
28
Oracle Database 11gR2 - Get the dependencies right ...
Tue, Dec 12th 2017 9:46a   Dave Hay
Having just installed Oracle 11.2 ( 11gR2 ) onto a Red Hat Enterprise Linux 7.4 VM, I was kinda getting fed up with the sqlplus command not working …..sqlplus sqlplus: error while loading shared libraries: libclntsh.so.11.1: cannot open shared object file: No such file or directoryls -al `locate libclntsh.so`-rwxrwx---. 1 oracle oracle 48797739 Dec 12 08:49 /home/oracle/app/oracle/product/11.2.0/dbhome_1/inventory/backup/2017-12-12_08-48-58AM/Scripts/ext/lib/libclntsh.so.11.1-rwxrwx---. 1 orac
52
DB2 on Windows - where does the db2nodes.cfg file live ?
Thu, Dec 7th 2017 2:13p   Dave Hay
I was briefly tinkering with the need to update the db2nodes.cfg file to help DB2 Express 11.1 cope with the hostname change of a Windows Server 2012 R2 boxen.I'd created a new VM, via OpenStack, using a snapshot from an existing VM - which I'd NOT yet deleted.Therefore, OpenStack, being the nice IaaS solution that it is, kindly helped me out by creating the new instance with a new hostname.This borked DB2, as you'd expect ….I've seen similar issues with DB2 on Linux: -SQL10003C There are
134
Windows Server 2012 - Ooops, I locked my account
Thu, Dec 7th 2017 11:59a   Dave Hay
One of my colleagues had a bad day with a shared Windows Server 2012 R2 environment, in that he locked out the main account that we use to access the box, via Remote Desktop Protocol (RDP).This is NOT an Active Directory environment, so there's no domain controller in the mix; these are merely local accounts.Thankfully, I had another account that WASN'T locked out, so I RDP'd into the box using that account and used the Advanced User Accounts Control Panel ( aka netplwiz ), which did the tric
68
Nagios and NRPE - There's more ...
Wed, Dec 6th 2017 6:25p   Dave Hay
Following on from my earlier post: -Nagios Remote Plugin Executor (NRPE) and xinetd on Red Hat Enterprise Linuxthings are starting to become more clear.As far as I can establish, on the NRPE client/agent side, we have several components at work here.So we have the NRPE agent itself, as started using xinetd : -/etc/xinetd.d/nrpe # default: on# description: NRPE (Nagios Remote Plugin Executor)service nrpe{ flags = REUSE socket_type = stream port = 5666 w
49
Nagios Remote Plugin Executor (NRPE) and xinetd on Red Hat Enterprise Linux
Wed, Dec 6th 2017 2:15p   Dave Hay
As per a few previous posts, I'm tinkering ( there's that word again, I must think of another simile ) with Nagios.This time I'm looking to have my Nagios monitoring server ( which runs on Ubuntu ) execute an agent on a remote boxen running Red Hat Enterprise Linux (RHEL).Having installed the pre-requisites ( and I do need to document those steps more clearly ), I setup a NRPE script to be started using xinetd ( A Powerful Replacement For Inetd )cat /etc/xinetd.d/nrpe # default: on# descripti
44
WebSphere Liberty Profile - Monitoring via JMX over REST using Jython
Wed, Dec 6th 2017 1:39p   Dave Hay
For this, I'm using two excellent IBM developerWorks articles as inspiration: -Retrieve performance metrics from the WebSphere Liberty profile, Part 1 - Setup and configurationRetrieve performance metrics from the WebSphere Liberty profile, Part 2 - Data collection by using JythonWithout reposting the entire pair of articles ( which would be a daft idea ), here's a short-cut of what I ended up doing.For the record, I am using Liberty 17.0.0.3: -/opt/ibm/WebSphere/Liberty/bin/server versionWebS
42
WebSphere Liberty Profile - Snooping About
Wed, Dec 6th 2017 11:51a   Dave Hay
I've written about the SuperSnoop Servlet before: -WebSphere Application Server - Binary ScannerWebSphere Liberty Profile on macOS - SuperSnoopingWebSphere Application Server 9 - Snooping AboutWebSphere Application Server - Liberty Profile - Oh, what funand it's one tool that I use, and reuse, whenever I'm testing a build of WebSphere Application Server etc.However, it niggled me that, whilst it DOES run on WebSphere Liberty Profile, it doesn't actually work.Having deployed it: -cp SuperSnoo
57
Mozilla Firefox Quantum - Suppressing Autoplay Videos
Wed, Dec 6th 2017 6:26a   Dave Hay
So I mostly love the new Firefox 57, aka Quantum, although I have a few niggles with it; my main gripe is that the LastPass plugin appears to have been totally borked.One other issue - autoplay videos :-(Given that I don't use Adobe Flash, I was somewhat grumpy to find that the BBC News site was full of videos that'd start auto-playing as soon as I hit the site.Thankfully, the internet came to the rescue - AGAINHow can I stop videos from automatically starting (autoplay)?This takes one off to
45
Monitoring WebSphere Liberty Profile via JMX and REST over HTTPS
Tue, Dec 5th 2017 8:44p   Dave Hay
This is another of those pesky Work-in-Progress articles, and follows on from an earliest post: -Using Nagios to monitor IBM HTTP Server and IBM WebSphere Liberty ProfileMy objective is to have Nagios actively pull various Java-related attributes from WebSphere Liberty Profile, using the Java Management Extensions (JMX) API over REST over HTTPS.This is what I've inferred thus far, using the Liberty REST Explorer: -https://mfp.uk.ibm.com:8443/ibm/api/explorer/#/IBMJMXConnectorRESTand a Google Ch
45
Using Nagios to monitor IBM HTTP Server and IBM WebSphere Liberty Profile
Tue, Dec 5th 2017 8:33p   Dave Hay
This ties up with a piece of work upon which I'm currently engaged.I've configured Nagios 4.3.4 to test IBM HTTP Server (IHS) 8.5.5.12 and the MobileFirst Platform (MFP) runtime, which runs on WebSphere Liberty Profile 17.0.0.3.This is using the out-of-the-box Nagios plugin called check_http: -/usr/local/nagios/libexec/check_httpwhich can be invoked thusly: -/usr/local/nagios/libexec/check_http -H mfp.uk.ibm.com -p 8443 -SHTTP OK: HTTP/1.1 200 OK - 3710 bytes in 0.014 second response time |tim




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