There are two ways of expanding your root filesystem space. It’s either by adding additional volumes or by resizing PV. Let’s try the latter. We have CentOS 7 wth XFS running on Proxmox. First expand drive size with admin UI. Next: At first after resizing drive you will see in lsblk that the drive should have additional space. At growpart you will see your partition expands. At pvresize there is no change. Change happens on lvextend, so you will see you LVM increases in space. To see filesystem change in df you need to run either xfs_growfs or resize2fs depending
I have dual boot on my Lenovo Thinkpad T420s, Windows 10 and Ubuntu 22. Actually I had, because I tried to reinstall Ubuntu 22 and I’ve lost my dual boot and ability to boot at all. So I tried few things: reformat manually EFI and root partitions os-prober and update-grub setting root and prefix at grub rescue grub-install Windows installation troubleshooting Unfortunately it does not work. Something went terribly wrong. To bring back Windows first boot from installation media and go for command prompt: This way I was able to boot into Windows once again, but unable to do it
I was replacing drives and memory in one of servers and out of a sudden node was unable to start. When finally it booted it was gone out of cluster. Weird. This node has been installed on SSD drive which had 2 years or constant runtime. Debian prompted with some file system issue at one and another time. After few reboots finally it booted successfuly but node was unable to communicate properly with other cluster members. I tried to start time synchro from the stratch to no avail. I pulled out other drives than this one with operating system without
During installation Ubuntu will create LVM with half of the space available. In order to expand it to whole space available you need to extend logical volume and expand file system as follow:s
Display geo location map for NGINX traffic logs in Kibana Summary There are 3 things to remember and configure in order to have geo location map working: Use “forwardfor” option on pfSense HAProxy TLS frontend Enable filebeat NGINX module and point particular log files Define custom NGINX log format This guide relates to Ubuntu Linux setup. Elasticsearch 7 First install Elasticsearch 7 as follows. Note: for more resilent setup install more than one Elasticsearch server node and enable basic security. For sake of clarity I will skip these two aspects which will be covered by another article. Kibana Then install
Among 3 million public IP address ranges for the whole world, 68k belongs to the Russian Federation. This translates into 45 million addresses. Scanning the HTTP port on this population took 20 hours. I obtained 630k IP addresses with listening on port 80. Of which 530k gives the correct answer of the HTTP type. Only 340k gives an HTTP 200 response. Over 200k run on NGINX servers, and 100k run on Apache. When analyzing the content, you will find GitLab, Kibana, Zabbix or Grafana installations open for registration and use, but also copies of databases, video surveillance systems, etc. My
The basis for the construction of diodes and transistors A semiconductor is a material whose electrical conductivity is between the conductors and insulators. Their resistance and conductivity depends on temperature and admixtures. [W] The most commercially used semiconductors are those based on silicon, and in the past also on germanium. In addition to these two elements (in crystalline form), a whole spectrum of other substances from groups 13-15 is used, which can form two, three or four-element compounds. P-n junction The basic element of a semiconductor system [003] Additions of atoms of other elements are used to obtain the increased
Energy in a magnetic field [209] Just as a capacitor works by storing energy as an electric field, an inductor stores energy as a magnetic field. The energy stored in the coil is calculated in terms of current. The capacitor acts as an insulator of the circuit while the inductor acts as its conductor. The coils have inductance expressed in henry [H]. The coils are plugged into the circuit in series with the powered device. The coils are characterized by a maximum current, as their windings have a certain resistance, therefore the flow of current causes a voltage to accumulate
I will start with the werid experience with one of WP themes – Polite and Polite Grid. I was wondering why my website make double requests on every page. One for the document and other for content. This was annoying as I was unable to measure traffic properly. It turned out that it was because of the theme I’ve been using for some time. Changing it to different one fixed it. Second of all to make NGINX logs easier to handle I’ve created separate location entry for all the WP things, so the “real” traffic goes only to particular log