As system administrators, we would have got requirements wherein we need to configure raw hard disks to the existing servers as part of upgrading server capacity or sometimes disk replacement in case of disk failure. Attaching BuyVM/FranTech Block Storage Slabs to a Linux has the similar approach. In this article, I will take you through the steps by which we can add the new Block Storage Slabs to an existing Linux server such as RHEL/CentOS or Debian/Ubuntu. Important: Please note that the purpose of this article is to show only how to create a new partition and doesn’t include partition extension or any other switches. I am using fdisk utility to do this configuration. I have added a hard disk of 512GB capacity to be mounted as a /data partition. fdisk is a command line utility to view and manage hard disks and partitions on Linux systems. Firstly, you need to login BuyVM/FranTech Stallion control panel to attach your Block Storage Slabs to your VM. This will list the current partitions and configurations. After attaching the hard disk of 512GB capacity, the fdisk -l will give the below output. New disk added is shown as /dev/sda. Some will show as /dev/xvdcbased of the disk type. To partition a particular hard disk, for example /dev/sda. Type m to print command options Here since we are creating a partition use n option to create either primary/extended partitions. By default we can have upto 4 primary partitions. ive the partition number as desired. Recommended to go for the default value 1. Give the value of the first sector. If it is a new disk, always select default value. If you…

Protective measures for a server are very important and there are several ways to protect your websites and apps from malicious bots. You can just simply add this piece of code into Nginx Conf file server{} section:

PacificRack has returned with another outstanding offer based!  We’ve featured them before, and they are a sub-brand of Quadranet, familiar name in the community.  Quadranet itself is big time, based in the famous One Wilshire Building (aka “the world’s most connected building”). This offer is in LA, and looks pretty nice: KVM on Virtualizor riding on E5-2620 v2 or v4 with SSD RAID 10, coming in at 1GB of RAM per dollar per month.  That’s on an annual contract but some of the bigger offerings go down to quarterly.  For those prices, you’re not risking much and you’re with a well-known provider, so buy with confidence. In their own words: “PacificRack is a sub-brand of QuadraNet, all our business are managed under QuadraNet. QuadraNet was originally formed in 2001 as a telecommunications provider in Los Angeles and the surrounding areas. As our client base grew, we adapted to the evolving industries and expanded our service offerings over time to encompass a larger variety of Internet-based products and services.” Their WHOIS is public, they are a registered company in the USA, their legal docs can be found here, and they accept credit cards, PayPal, and Alipay. Network and host node info after the jump, but first, here are the offers: 1GB VPS 1GB RAM1GB Swap1x vCPU20GB SSD space2TB Transfer200Mbps uplink1x IPv4KVM/VirtualizorSetup Free: LEB$12/Year[ORDER] 2GB VPS2GB RAM2GB Swap2x vCPU40GB SSD space4TB Transfer200Mbps uplink1x IPv4KVM/VirtualizorSetup Free: LEB$24/Year[ORDER] 4GB VPS4GB RAM4GB Swap4x vCPU80GB SSD space8TB Transfer200Mbps uplink1x IPv4KVM/VirtualizorSetup Free: LEB$12/Quarterly$24/Semi-Annually$48/Annually[ORDER] 8GB VPS8GB RAM8GB Swap8x vCPU160GB SSD space16TB Transfer200Mbps uplink1x IPv4KVM/VirtualizorSetup Free: LEB$24/Quarterly$48/Semi-Annually$96/Annually[ORDER] Host node info and network details available…

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1. Check the current running Kernel Version 2. List the Kernel Entries as per GRUB2 file: 3. Let us modify the Kernel Version to "CentOS Linux (5.8.5-1.el7.elrepo.x86_64) 7 (Core)" which is at line number 2 but denoted as entry 1. 4. Changes to /etc/default/grub require rebuilding the grub.cfg file as follows: Reboot the Server and it will boot with Kernel Version 5.8.5-1.el7.elrepo.x86_64.

RamNode ORDER HERE CPU Model : Intel Xeon E3-12xx v2 (Ivy Bridge, IBRS)CPU Cores : 1CPU Frequency : 2599.998 MHzCPU Cache : 16384 KBTotal Disk : 15.0 GB (3.3 GB Used)Total Mem : 487 MB (66 MB Used)Total Swap : 2047 MB (0 MB Used)System uptime : 0 days, 0 hour 2 minLoad average : 0.20, 0.20, 0.08OS : CentOS 7.6.1810Arch : x86_64 (64 Bit)Kernel : 3.10.0-957.21.3.el7.x86_64TCP CC : cubicVirtualization : KVMOrganization : AS3842 RamNode LLCLocation : Austin / US Region : Texas I/O Speed(1st run) : 719 MB/sI/O Speed(2nd run) : 722 MB/sI/O Speed(3rd run) : 754 MB/s Average I/O speed : 731.7 MB/s Processor: Intel Xeon E3-12xx v2 (Ivy Bridge, IBRS)CPU cores: 1Frequency: 2599.998 MHzRAM: 487MSwap: 2.0GKernel: Linux 3.10.0-957.21.3.el7.x86_64 x86_64 Disks:vda 15G HDD CPU: SHA256-hashing 500 MB2.660 secondsCPU: bzip2-compressing 500 MBCPU: AES-encrypting 500 MB2.197 seconds ioping: seek ratemin/avg/max/mdev = 121.9 us / 207.0 us / 11.8 ms / 214.9 usioping: sequential read speedgenerated 10.1 k requests in 5.00 s, 2.46 GiB, 2.01 k iops, 503.6 MiB/s dd: sequential write speed1st run: 775.34 MiB/s2nd run: 818.25 MiB/s3rd run: 790.60 MiB/saverage: 794.73 MiB/s IPv4 speedtestsyour IPv4: 192.184.90.xxxx IPv6 speedtestsyour IPv6: 2604:180:f2:xxxx OVH BHS (CA): 5.64 MiB/s RamNode ORDER HERE

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Some bit of indigestion during an update has left one of your system reserved partitions on the hard disk hanging out. I don't think anybody's come up with a set-in-stone solution yet : the problem appears to be random, sometimes disappearing after a few days. (you can Search these forums for other similar issues) But, seeing as it's been a few months, if you're feeling adventurous, you could run DiskPart and try and remove the letter. Open up a Command Prompt (Administrator) : <Win+X> then select from the Powerusers Menu... Start typing...     a list of all your lettered volumes should appear substituting the number corresponding to your z drive for 'n'     If that works, restart and see if the change is persistent. If horrible things start happening, reverse the process... list and select as before then

After installing RHEL/CentOS 7 minimal and sleeping with your u shaped body pillow, You may not able to connect network in that machine. This will happen because Ethernet interfaces are not enabled by default. This guide explain you to setup network on RHEL/CentOS 7. Setup network on CentOS 7 minimal First, type “nmcli d” command in your terminal for quick list ethernet card installed on your machine: “nmcli d” command output Type “nmtui” command in your terminal to open Network manager. After opening Network manager chose “Edit connection” and press Enter (Use TAB button for choosing options). CentOS_7 Network manager screen Now choose you network interfaces and click “Edit” Edit your network interfaces DHCP configuration Choose “Automatic” in IPv4 CONFIGURATION and check Automatically connect check box and press OK and quit from Network manager. Set ip adress using DHCP Reset network services: service network restart Now your server will get IP Address from DHCP . CentOS 7 check ip address

The error "IndentationError: unexpected indent" in Python people get most time is something to do with space and tab syntax in editor. Editor needs to be set using space instead of tab in python programming. Eg. Convert tabs to spaces in Notepad++ To convert existing tabs to spaces, press Edit->Blank Operations->TAB to Space. If in the future you want to enter spaces instead of tab when you press tab key: Go to Settings->Preferences...->Language (since version 7.1) or Settings->Preferences...->Tab Settings (previous versions) Check Replace by space (Optional) You can set the number of spaces to use in place of a Tab by changing the Tab size field.

To find files on a linux system you can use following command: # find / -name xxxx But I prefer to use the locate command. This command is extremely easy to use and it’s faster than the find-command. # locate filename To install the locate package, use yum. # yum install mlocate To update it’s ‘internal database’, run following command. # updatedb To find a file, use following command # locate httpd.conf /etc/httpd/conf/httpd.conf  

In Tomcat 7, the password in the setting file: tomcat-users.xml is displayed as string encrypted by md5. In server.xml file: <Realm className="org.apache.catalina.realm.LockOutRealm"> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase" digest="md5"/> </Realm> echo -n yourpassword | md5sum make sure you change the password in tomcat-users.xml with md5 encrypted string.

Use "nginx -t" to debug nginx issues. It's a known issue when nginx fails to start in Vesta due to some misconfiguation occurred by itself. nginx: [emerg] the same path name "/var/cache/nginx/xxx.es" used in /etc/nginx/conf.d/01_caching_pool.conf:2 and in /etc/nginx/conf.d/01_caching_pool.conf:3 nginx: configuration file /etc/nginx/nginx.conf test failed nginx: [emerg] the same path name "/var/cache/nginx/xxx.es" used in /etc/nginx/conf.d/01_caching_pool.conf:2 and in /etc/nginx/conf.d/01_caching_pool.conf:3 nginx: configuration file /etc/nginx/nginx.conf test failed [root@server ~]# cat /etc/nginx/conf.d/01_caching_pool.conf proxy_cache_path /var/cache/nginx/xxx.com levels=2 keys_zone=xxx.com:10m inactive=60m max_size=512m; proxy_cache_path /var/cache/nginx/xxx.es levels=2 keys_zone=xxx.es:10m inactive=60m max_size=512m; remove all the duplicate lines. And then restart nginx.

  You just got your new CentOS dedicated server, and you notice that times in your logs aren’t quite right. You check the time from the command line (run date), and find that the timezone is set to US Eastern or some other timezone. How do you get this changed? Unfortunately, this is not an easy thing to figure out. Fortunately though, it’s not hard to do with the right directions. Please note that you have to have root access to be able to make the changes detailed below. There are a series of time zone files located at /usr/share/zoneinfo. Select the appropriate named timezone for your location. For my location, Oklahoma, USA, I actually have two that I can select from: America/Chicago or US/Central. Make note of the appropriate folder and file for your timezone. The active timezone used on your system is in the /etc/localtime file. The default will vary depending on your server host but often seems to be EST or EDT (depending on the time of year you are checking). We simply need to replace this file with the file we selected in the previous step. Now, I say replace, but I actually recommend creating a link to the pertinent file rather than actually making a copy. Let me explain the reasoning for this quickly. A crucial part of the timezone shift calculations is the daylight savings calculations. Many people don’t realize this, but the daylight savings days were changed in 2007. When this change happened, all servers needed to be updated with new zoneinfo files.…