CentOS linux operating system.
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 each device. Install iostat Run the following command: [root@app1 ~]# Read more…
Setting up SolusVM with IPv6 Subnets You may be like me, and read the setup documentation for SolusVM on how to setup IPv6 subnets but it doesn’t tell you what are the other things that are needed to make it work. It doesn’t tell you what ethernet interface settings need Read more…
Setting up IPv6 address on CentOS 7 All of our servers that are installed have dual stacked IPs, both IPv4 and IPv6 for consistency. Sometimes by default CentOS 7 doesn’t automatically enable to IPv6 functionality. If it doesn’t these are the items which you need to add to your network Read more…
Kubeadm join getting error getsockopt: no route to host After installing the master node I went to add some nodes into our cluster and recieved an error. This is the error I received: [root@fuselaxnode2 ~]# kubeadm join 10.230.107.137:6443 –token TOKEN –discovery-token-ca-cert-hash sha256:SHA_HASH [preflight] Running pre-flight checks. [WARNING FileExisting-crictl]: crictl not Read more…
Quick install of a Kubernetes self hosted cluster Updated October 27, 2018: Added disable chronyd before enabling ntpd This how to explains the steps I went through to install Kubernetes on a bare metal self hosted cluster in our data center. All your servers will have the same setup, with Read more…
Rook Ceph Failed to complete rook-ceph-mon0: signal: aborted (core dumped) I’ve got an installation of Rook + Ceph, running on our Kubernetes self hosted environment and after running for a few days or a week, we end up having a problem where 2 of the 3 mons stop working. They Read more…
Creating a Ceph storage cluster on Kubernetes with Rook We’ve got our new Kubernetes self hosted cluster running, and now have a need for pod storage. You were probably wondering like me what is the right solution for storing files. Something that works well with the idea of Kubernetes (k8s Read more…
Rsync to USB flash drive recopies files Trying to rsync files to a USB drive connected to a linux server. The files sync the first time, then then next time I plugin the USB all the files sync again. This is the command I’m using: RSYNC_PASSWORD=12345 rsync -pvrt –dry-run –delete Read more…
Cpanel already has a SOA record. You may not mix CNAME records When using the Cpanel zone editor, I got this error when trying to add a CNAME for example.com, why? example.com. already has a SOA record. You may not mix CNAME records with other records for the same name Read more…
How to manually run Cpanel backup via ssh A lot of hosting providers and even customers use Cpanel for virtual hosted websites. Cpanel is a powerful management system that when installed takes over your whole server and and allows a normal user to easily administer and manage a linux server. Read more…