checkout the tutorial: http://jperrin.org/centos/monitoring/grafana/keeping-an-eye-on-centos-performance-with-grafana/ maybe cacti and co is too complicated and looks a little outdated… collectd might be just what you are looking for 🙂 “The main objective of this is to develop an easy to use and customizable […]
The Enterprise Volume Management System (EVMS) Project has the goal of providing unparalleled flexibility and extensibility in managing storage. It represents a new approach to logical volume management for Linux. The architecture introduces a plug-in model that allows for easy […]
you should setup harddisk encryption during setup. to add an encrypted /home partition afterwards might be possible but a lot more effort. scroll very down if you want to know how to encrypt an usb sticks … needless to say […]
smart and ssds? and: is smart really that smart? to do regular smart, is better than doing no smart, but as confirmed here, it can be only minutes of time from reporting an error-problem to complete harddisk failure, so smart […]
btrfs is used by SUSE12 for the /root partition – where it is doing daily snapshots of the installed OS. It has more functionality built-in than just storing files. This article wants to take btrfs for a test-drive. Video Tutorials: […]
update: extundelete works well on ext3 but not on ext4. update: WHILE STILL POWERED ON IMMEDIATELY backup the ext4 journal to file on usb stick: debugfs -R “dump <8> /mount/usb-stick/sda.journal” /dev/sda (assuming sda is the drive where the deletion happened) […]
can be easily checked via: root@debian9:~# cat /proc/filesystems nodev sysfs nodev rootfs nodev ramfs nodev bdev nodev proc nodev cpuset nodev cgroup nodev cgroup2 nodev tmpfs nodev devtmpfs nodev debugfs nodev tracefs nodev securityfs nodev sockfs nodev bpf nodev pipefs […]
iSCSI it is possible to tunnel SCSI through TCP/IP – allowing adding ressources of storage-servers directly – as if it was a local harddisk or partition. The isci-initiator (client) can “partition-and-format-over-network” the iscis-target (harddisks or files acting as aprtitions on […]
The good news is: It supports OSX and Linux now. Windows & Linux Servers Microsoft Exchange, Microsoft SQL, SharePoint & Active Directory Microsoft Azure & Amazon EC2 cloud workloads Adding a machine running Windows Adding a machine running Linux Adding […]
lvm2 concept: tested on: debian 8-9 and compatible, manpages from centos7/rhel7 in general backup! backup! backup! before fiddeling with partitions and the filesystem… logical volumes basically allow you to span partitions over several disks/partitions as well as resize those partitions. […]
there are a lot of nice programs for gnu linux until (2017) mainly used fdisk and gparted and was fine with that. (fdisk can also do GPT now 😉 Just in case you need to do partitions larger than 2TByte […]
for good overview it makes sense to label the harddisk partitions according to functionality (what is their purpose?) GNU Linux bash – how to label partitions tune2fs (xfs & ext4) uname -a; # tested with Linux debian 3.16.0-4-686-pae #1 SMP […]
yeah one knows sometimes making fun of distributions that have a partition for every /root/folder but well yes it has it’s reasons, like when a program accumulates to much data (mailbox full), the /root partition and the system will not […]
the commands used for xfs are different. this is only valid for ext3/ext4. preparation: you should move your /home to a separate partition. Warning! You will need to have “physical” access to the server’s console in order to perform these […]
“XFS is a high performance journaling filesystem which originated on the SGI IRIX platform.” SGI (Silicon Graphics) is out of business since 2009. “The addition of 3D graphic capabilities to PCs, and the ability of clusters of Linux– and BSD-based […]
update: safety first! when it comes to important files: safety comes first thus recommend to the user that wants to go pro the following backup system: have two complete backups at two different places: backupA: at the company, USB 3.0 […]
what for? various reasons. for example maybe the user wants to test download bandwidth by downloading a large file with random data and measure the bandwidth speed. lsb_release -a; # tested on No LSB modules are available. Distributor ID: Debian […]
this is a crowd-funding project that still needs funding…. if you can help! please chip in 🙂 https://www.crowdsupply.com/gnubee/personal-cloud-1 Tour of LibreCMC and openmediavault We took a screencast of LibreCMC and some screenshots of openmediavault running on the GnuBee Personal Cloud […]
tested with: ext3 and ext4 (does not work for xfs) MY RECOMMENDATION: WHO CARES IF THE NAS IS DOING A AUTOMATIC REBOOT AT SUNDAY 3 o’CLOCK IN THE MORNING AND CHECKING 2-3TB OF EXT3 FILESYSTEM? NO ONE! RELIABILITY SHOULD BE […]
update: safety first! when it comes to important files: safety comes first thus recommend to the user that wants to go pro the following backup system: https://www.ebay.de/itm/Intenso-Memory-Board-4-TB-Externe-Festplatte-8-9-cm-3-5-Zoll-USB-3-2-Gen-1/402584943201 have two complete backups at two different places: backupA: at the company, USB […]
lsb_release -a; # tested with Description: Debian GNU/Linux 12 (bookworm) # previously this was tested with cat /etc/os-release |grep PRETTY PRETTY_NAME=”Debian GNU/Linux 11 (bullseye)” why? duplicate files are a waste of disk space. every system experiences catastrophic failures, slow downs […]
once more The Penguin comes to aid the Windows (how nice of tux). General approach: # become root su – root # phase1) testing: list all files that match find /search/this/folder -iname “for*this*file*txt” -type f|less # phase2) delete: all the […]
uname -a Linux QNAP1 3.4.6 #1 SMP Tue Aug 4 03:44:03 CST 2015 x86_64 unknown dmidecode -t 2 # dmidecode 2.9 SMBIOS 2.6 present. Handle 0x0002, DMI type 2, 15 bytes Base Board Information Manufacturer: ICP / iEi Product Name: […]
unfortunately if you would use du -h (for human readable) you lose the “sort for size” mechanism. what harddisk/partition is full? df -h; # report file system disk space usage Filesystem Size Used Avail Use% Mounted on devtmpfs 3.9G 0 […]
Western Digital RE4-GP 2TB Drive Problems DO NOT BUY FROM AMAZON! THEY MAKE BAD PRODUCTS LOOK GOOD! + THEY DO NOT PAY FAIR TAXES! THEY AVOID TAXES IN EUROPE AND PAY AS LITTLE AS THEY WANT IN LUXEMBOURG! (LuxLeaks!) ALTERNATIVE: SPEND […]
Creditz: Linode orginal article: https://www.linode.com/docs/tools-reference/tools/limiting-access-with-sftp-jails-on-debian-and-ubuntu Did you know SFTP has NOTHING to do with FTP 🙂 You do not need a complicated ssl-ftp-server-setup to provide encrypted up and downloads… no you only need an ssh-server, that you probably have installed […]
to mount a NFS share on boot you need to specify it in /etc/fstab (/etc/init.d/rc.local -> script did not work for me in debian-jessie) # tested with Debian 8 su – root; # become root # install basic software needed […]
We are talking about that piece of hardware: while this is a neat idea… i had trouble getting NFS compiled into the image/kernel… but up to that point, things worked pretty well 😀 another thing is: to rely on the […]
what to do? imho QNAPs are hardware wise nice, but software wise they are a bloat (too much stuff, it shall only store files AS RELIABLY AS POSSIBLE (here it does not shine per default)) paranoid mode on: do a […]
Enable SSH Access via SSH and login as the admin user with whatever that password is /etc/init.d/StartMediaService.sh stop And then disable the services by editing that file: vim /etc/init.d/StartMediaService.sh modify the line starting with MULTIMEDIA_PATH and set it to = […]