_Note: This is an old post that was sitting in my drafts for a long time. It might be useful to someone still as most of the content is still relevant. _ You should checkout dotnet-monitor if you are using .NET Core 3 and above! - it promises to make the while thing a lot easier. I’ve left the below content for posterity, but it’s very out of date now.

I’ve just been looking at a nice new tool called sysdig, which seems to be really useful for analysing and troubleshooting on production systems. There’s a great blog post by Gianluca Borello, detailing how he set up a number of honey-pot servers with poor passwords, and then captured system activity with sysdig, showing exactly how his server was compromised, and what the hacker did at each stage. The level of detail he was able to garner is astounding, and I can see how powerful this tool could be in the future, for any sort of troubleshooting where it’s not clear exactly what has happened/is happening on a system.

Old Article Comments I exported these from my old wordpress blog, so they are a bit out of date, but I thought I’d keep them around for posterity. [vinay shetty] - Nov 1, 2014 Super explanation.. Thanks lot [Anderson] - Mar 5, 2015 Hi Chris, how I can synchronizing passwords (no plain text) between the openldap and Active Directory ? Synchronizing users with LSC-project | Opencloud engineering - Sep 1, 2015 […] -w ‘xxx’ Useful links: 1) Official LSC tutorial OpenLDAP to AD 2) Good blogpost AD to OpenLDAP 3) Official LSC documentation This entry was posted in Uncategorized and tagged ad, java, ldap, […] [ebooster] - Nov 5, 2016 Hi Chris, Thanks for this.

I have recently had to sync accounts and groups from Activc Directory to OpenLDAP, for a requirement for a directory server in the DMZ. A DMZ (De-millitarised zone) is an area of the network open to the internet. It’s supposed to be separate from the rest of your LAN, so you can have services running on the internet without fear that people can break into your LAN from these. There are other options for doing this, including a read-only domain controller (RODC), a AD LDS (Lighweight Directory Server) and so on, but they all require connectivity back from the DMZ to the LAN, which is precisely what we are trying to avoid.

Simple Steps to Use Yum Rollback on Centos / RHEL 5 Some nice instructions on a simple backup/rollback technique for packages on Centos / RHEL 5. This can be accomplished even more easily in newer versions of yum, such as on Centos / RHEL 6, which the ‘yum history’ command. There’s a nice undo feature there now, that makes it trivial to revert a change, if you have problems with a package update for any reason.

You can increase disk sizes in vmware guests whilst they are running. This is supported, but Linux will not see the new size of the disk until it reboots. There is a way around this (assuming here we are using LVM disks): 1. Increase the disk size in the vmware settings. 2. Logon as root onto the Linux guest system. 3. Do: echo "1" > /sys/class/scsi\_device/<device>/device/rescan ..where is the SCSI bus you wish to rescan.

Old Article Comments I exported these from my old wordpress blog, so they are a bit out of date, but I thought I’d keep them around for posterity. [Andy Dorfman] - Apr 5, 2014 Excellent article. Do you think this setup will work to load balance/failover several nonclustered weblogic instances. In my current setup, i have apache rp listening on port 443 with ssl termination and forwarding everything to weblogics, listening on port 80.

Although I have worked with enterprise envrionments running Oracle and SQL Server for quite a few years, I’ve yet to be involved in a real high-availability deployment. This has been for a variety of technical reasons in our company’s application, and a lack of interest from most customers. Recently, I explored options and had the opportunity to test some load balancing setups for our application servers at a customer site. I was impressed with the reliability and reputation of the HAproxy software, so had a look at that to begin with.