similar to: CentOS Digest, Vol 119, Issue 19

On Wed, Dec 17, 2014 at 12:14 PM, Xinhuan Zheng <xzheng at christianbook.com> wrote: > Hello CentOS list, > I have a requirement that I need to use encryption technology to encrypt > very large tar file on a daily basis. The tar file is over 250G size and > those are data backup. Every night the server generated a 250G data backup > and it?s tar?ed into one tarball file. I

Hello CentOS list, I have a requirement that I need to use encryption technology to encrypt very large tar file on a daily basis. The tar file is over 250G size and those are data backup. Every night the server generated a 250G data backup and it?s tar?ed into one tarball file. I want to encrypt this big tarball file. So far I have tried two technologies with no success. 1) generating RSA 2048

On Fri, Dec 19, 2014 at 2:40 PM, Brian Mathis <brian.mathis+centos at betteradmin.com> wrote: > > > GPG is really what you want to be using for this. OpenSSL is a general > toolkit that provide a lot of good functions, but you need to cobble some > things together yourself. GPG is meant to handle all of the other parts of > dealing with files. > > I will expand on

On Fri, Dec 19, 2014 at 3:48 PM, Les Mikesell <lesmikesell at gmail.com> wrote: > On Fri, Dec 19, 2014 at 2:40 PM, Brian Mathis > <brian.mathis+centos at betteradmin.com> wrote: > > > > > > GPG is really what you want to be using for this. OpenSSL is a general > > toolkit that provide a lot of good functions, but you need to cobble some > > things

Am 17.12.2014 um 18:42 schrieb Les Mikesell <lesmikesell at gmail.com>: > On Wed, Dec 17, 2014 at 11:14 AM, Xinhuan Zheng > <xzheng at christianbook.com> wrote: >> I have a requirement that I need to use encryption technology to encrypt >> very large tar file on a daily basis. The tar file is over 250G size and >> those are data backup. Every night the server

Hello Everyone, We are using CentOS 5 system for certain application. Those are VM guests running in VMware. There is datastore issue occasionally, causing all file systems becoming read only file systems. So application stop working, and opened files cannot be written either. We cannot even ssh login to the system. Typically we had to power cycle the VM. We are trying to add reliability to the

On Wed, Dec 17, 2014 at 11:14 AM, Xinhuan Zheng <xzheng at christianbook.com> wrote: > I have a requirement that I need to use encryption technology to encrypt > very large tar file on a daily basis. The tar file is over 250G size and > those are data backup. Every night the server generated a 250G data backup > and it?s tar?ed into one tarball file. I want to encrypt this big

On 17/12/14 18:54, Leon Fauster wrote: > Am 17.12.2014 um 18:42 schrieb Les Mikesell <lesmikesell at gmail.com>: >> On Wed, Dec 17, 2014 at 11:14 AM, Xinhuan Zheng >> <xzheng at christianbook.com> wrote: >>> I have a requirement that I need to use encryption technology to encrypt >>> very large tar file on a daily basis. The tar file is over 250G size

Hi, I am recovering a CentOS 5.4 system. I've copied all partitions into the recovery system. I've installed grub boot loader. However, the original system is using /dev/sdb1 for root (/), while the recovery system is using LVM (/dev/vg0/lv1) for root (/). When recovery system boots, I got the panic error: * Mounting /dev/sdb1 on /sysroot * Mount: mounting

Dear All, Below question has been puzzled me for a while, and don?t know if anyone has experienced such puzzle: You have an external array attached to a physical hardware. The operating system is CentOS 5. The file system is created on top of LVM on external array & mounted. The CentOS 5 can see the array controller, and manage all LVM configuration, etc. There is data stored in that

Hello All, I guess it is very common for administrative purpose, to dump and restore a CentOS 7 system. I usually use dump/restore commands. However, I?m having trouble to handle installing bootloader and creating initramfs for C7 system. Does anyone know a good document source that details those procedure? Thank you, Xinhuan Zheng

On Aug 21, 2019, at 7:35 AM, Xinhuan Zheng <xzheng at christianbook.com> wrote: > > my $s = IO::Select->new( $fh ); > if ( $io->can_write( 10 ) { That?s not designed to do what you hope. select(2) is a system call intended for use on network socket handles, not file handles. Since socket handles and file handles are compatible on a Unix type system (including CentOS) the

Hi, all. So, in reviewing my OpenSSH keypairs and evaluating the size my RSA keys should be, i realized that, if i update my 2048-bit keypairs to 4096 bits, it really doesn't matter that much, because they're still only encrypted with 3DES, which provides an effective 112 bits of symmetric encryption strength: $ head -4 ~/.ssh/id_rsa -----BEGIN RSA PRIVATE KEY----- Proc-Type:

Hello, Thanks for all feedback I got. I am pretty sure that if I used ?openssl enc? method, it is able to handle large file over 250g size perfectly. I think openssl installed on the system is capable of doing large file support. However, when using ?openssl smime?, it is not able to. Apparently it?s smime method limitations, not the openssl. Other than smime and enc, what other methods can I use

Hi All, I have a Quantum scalar i40 tape library. I need to configure it to TWO tape partition libraries, e.g., library_a and library_b, so that each library has its own tape drive. Then connect this physical tape library to two different CentOS servers so that each server can see its own media changer and tape drive. I once had a successful configuration on one host but NOT on the other. One

On 2019-09-25 11:31, Xinhuan Zheng wrote: > Hello All, > > I guess it is very common for administrative purpose, to dump and restore a CentOS 7 system. Though I can not answer OP's question, I have question of my own. Is this really routine (often) task for Linux sysadmins? I used something like that to replicate cluster nodes in the past, but kickstart would be routine task for

> On 06/08/2020 13:52 secure.light.0417.road <secure.light.0417.road at protonmail.com> wrote: > > > Ah, right. The hashed password can't be used to encrypt. > > I want to remove possibility to decrypt mails using materials in mail servers in VPS. I've thought about below scenario: > > 1. The client generates asymmetric keys in local. > 2. The client

Hi list, are there any functions or ideas to compute random numbers with a specific population mean and standard deviation from symmetric (but not normal) and asymmetric distributions? My first idea was to use e.g. rf() (and other R-functions for random number generation) and then scale the random numbers (for example: mean 300 and standard deviation 40), but I don't know if I'm wrong...

Hi everyone, In my environment, we heavily rely on Hiera to parametrize our modules. Like the Puppet code, I would like to version-control the Hiera .yaml files. However committing passwords in plain text to GitHub seems really odd. So I would like to make you aware of one of my side-projects called Raziel. https://github.com/jbraeuer/raziel/ http://bit.ly/raziel-slides While there is one

Hello, Today I searched redhat official portal and learned that Sendmail is considered deprecated. By default, CentOS 7 will use postfix as MTA. I need good advise on what it means to us. We are CentOS customers. We use that operating system for quite a few years. We rely on Sendmail for years for us to relay large quantity of emails to our customers for marketing purpose. We build our additional