How to up pfSense High Available Dual Firewalls I’ve been using pfSense for years now and just realized I hadn’t set up a highly available cluster of two firewalls. I’ve been running Dell R210 servers as our firewalls with 8GB RAM and Read more…
Nagios getting error WARNING: my_system() seteuid(0): Operation not permitted I have a Nagios 4.3.4 server running that monitors all of our infrastructures. I’m always adding plugins and checks for all of our servers. I added a new server that was Read more…
How do you verify SSL Certificate and Private Key matches? Today I was working on installing a certificate on a client’s nginx server. They already had an SSL certificate for the last couple of years to their previous tech left a Read more…
What do you do when a Ceph OSD is nearfull? I set up a cluster of 4 servers with three disks each; I used a combination of 3TB and 1TB drives which I had laying around at the time. When Read more…
Dell IDRAC6 not responding after setting IP using ipmitool I’m using a Dell R610 server that I purchased on eBay it came with an IDRAC6 Enterprise card already installed. I’ve purchased a few and never really had a problem getting the Read more…
Kubernetes pod getting rbd mount error Today I had a couple of our Kubernetes nodes get rebooted in the data center after they came back up, our Elastic Search pods were stuck in Init or Error states. Looking checking out Read more…
ntpd won’t start after reboot on CentOS 7 I’ve been having an issue where I install and enable ntpd to start at reboot on our ceph storage servers but after a reboot ntpd isn’t running correctly. Versions: CentOS 7.4 ntpd Read more…
How to install iostat on CentOS If you’re performance turning a server, you want to check all aspects to see how it’s performing. The iostat command is used to check disk i/o statistics, how shows blocks read and blocks written to Read more…
SolusVM Xen server won’t boot Every so often I have users who have an issue with their SolusVM server not booting when it was working just fine. About 99% of the times it’s because they performed a yum upgrade and Read more…
3Ware tw_cli getting DEGRADED and ECC-ERROR on rebuild I have some older servers still running 3Ware RAID cards. They work great, and have a nice command line interface to managing things using tw_cli. I recently had a drive fail, then Read more…