Re: [CentOS] C8 and backup solution
I have been using rsnapshot for years, with great success. https://rsnapshot.org/ ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] File server as host for a Windows Server VM?
works but must be licensed. Not sure if it works for you, but there’s an SQL server that runs on Linux. https://docs.microsoft.com/en-us/sql/linux/sql-server-linux-overview?view=sql-server-2017 The Express version (which would be enough for my case) is free. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] File server as host for a Windows Server VM?
Not sure if it works for you, but there’s an SQL server that runs on Linux. I am aware of that, and it would be my first choice. Unfortunately, in addition they want to use some damned printing account software, which only runs on Windows :-( ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] File server as host for a Windows Server VM?
So far you have not provided stats on server usage (cpu,ram) over a 24hour or 7 day 8am-5pm timeframe. So I will asume you have plenty of usage/performance to spare. Yes, I do. Unless using SSDs when creating the VM pleae do not use dynamic disk allocation. MS SQL may be very intensive and you are already sharing resources, lets not be the i/o intensity of the expanding disk one of them. The Windows VM machine would have (for now) two 1TB enterprise class disks in a mirror configuration exclusively available to it. remember SQL server is all about RAM, the more the merrier. I can give it 24 GB or even 36 GB if needed. is your partition aligned? Yes. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] File server as host for a Windows Server VM?
Do they really need Server for that, or would a workstation do? A workstation wouldn't do because the number of concurrent connections to it would be higher than MS allows for a workstation. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] File server as host for a Windows Server VM?
I hope that someone here can give some advice on the following: I have a Samba based Active Directory. A CentOS 7.6 machine runs as a file server and hosts the Windows user profiles for all the Windows workstations. Now management has decided that they need a Windows server for a couple of administrative applications, which need MS SQL Server. That would be the only role of this Windows. Since the above mentioned server has enough resources (2x Quad Core Xeon 2.66 GHz with HT and 48 GB of RAM, a dual port 10 Gb NIC) I thought of making it a host for a Windows virtual machine using KVM. Given the resources and current setup we have, at the moment it wouldn't be practical to implement both servers as VMs on top of a bare metal hypervisor. According to your experience, is there any motive why I shouldn't use such a setup? Thank you for any insights. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] raid 5 install
You seem to be saying that hardware RAID can’t lose data. You’re ignoring the RAID 5 write hole: https://en.wikipedia.org/wiki/RAID#WRITE-HOLE If you then bring up battery backups, now you’re adding cost to the system. And then some ~3-5 years later, downtime to swap the battery, and more downtime. And all of that just to work around the RAID write hole. Yes. Furthermore, with the huge capacity disks in use today, rebuilding a RAID 5 array after a disk fails, with all the necessary parity calculations, can take days. RAID 5 is obsolete, and I'm not the only one saying it. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] What files to edit when changing the sdX of hard drives?
No, I dislike UUIDs. I dislike, strongly, lots of extra typing that doesn't really get me anything. MAYBE, if you're in a Google or Amazon datacenter, with 500,000 physical servers (I phone interviewed with them 10 years ago)... but short of that? Nope. You can (perhaps should...) use the World Wide Name, which is a manufacturer ID unique to each disk. Contrary to the /sdX, it doesn't change with different configurations, OS or computer. An example of such an ID is the following: /dev/disk/by-id/wwn-0x50025ee3b4f5ca61 Many modern disks have their WWN printed on their labels. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Good linux software RAID primer advise
>> Could someone recommend good Linux software RAID primer. It would >> be good >> if it has good coverage of monitoring and dealing with failures. https://raid.wiki.kernel.org/index.php/Linux_Raid ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] semi-OT:apcupsd
>> I can't seem to find apcupsd for C 6. Just went to epel's website, >> and not visible. Anyone have a clue? I am running apcupsd on CentOS 6.9, monitoring through the network a common UPS that is physically connected to another server via USB. Just download the latest source code and compile it yourself. It's as easy as ./configure make make install No problems whatsoever. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Slow Samba
Please ask this question on the Samba list. The probability of getting an answer is higher there. sa...@lists.samba.org ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] frozen bubble for C7
> > Can't find perl(compress::bzip2) anywhere. Are you looking for this? (first hit on Google) http://search.cpan.org/~rurban/Compress-Bzip2-2.25/lib/Compress/Bzip2.pm Or this? ftp://195.220.108.108/linux/centos/7.3.1611/os/x86_64/Packages/perl-IO-Compress-2.061-2.el7.noarch.rpm ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Realtek 8111GR on C7
I'm planning to buy a mobo (z170-K) that has Realtek 8111GR (nic). Is the Realtek 8111GR supported or I must change mobo? I have been using a small server with a Realtek 8111E under CentOS 7 without any problem. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Hard drives being renamed
>> I've run into this with ZFS on Linux. The 'blkid' is useful to identify the >> target device and then add that to your fstab. I don't use device names >> >> at all anymore, too ambiguous (depending on the circumstance) in my >> >> opinion. Right. And there are other ways to identify disks unequivocally. Under CentOS, for example, I find the following directories: /dev/disk/by-id /dev/disk/by-path /dev/disk/by-uuid Each one has its optimal use case. It seems to me that in general the ideal would be to use the WWN identifier, which now comes printed on the disk label sticker and uniquely identifies the disk, offering a clear correspondence between physical and logical disks. Under CentOS, the WWN ID of detected disks can be found under /dev/disk/by-id. WWN stands for "World Wide Name". There's a Wikipedia article about it here: https://en.wikipedia.org/wiki/World_Wide_Name "hdparm - I" or even "smartctl -a" will show which /dev/sdX or whatever corresponds to which WWN or other relatively stable ID types. The advantage of WWN is that the ID won't change if you connect the disk to a different controller, for example from a SAS one to a SATA one. In one of my servers, if I unplug a SATA disk from a LSI-Avago SAS controller and I connect it to a Intel onboard SATA controller the ID changes from "scsi-idnumber" to "ata-brand-model-serialnumber" but the WWN remains constant. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] SSD disk and SMART errors
Two days ago I installed a brand new SSDNow E50 series (Enterprise) disk on a server. I intend to move the OS there. I just did the physical install and copied a few files to and from it just to see if it was OK. I left it there, waiting for an opportunity to configure it to do real work. Now I have looked at it with smartctl -a and it gives me the following info: 1 Raw_Read_Error_Rate 0x0033 104 104 050Pre-fail Always - 9127078 5 Reallocated_Sector_Ct 0x0033 100 100 003Pre-fail Always - 0 9 Power_On_Hours 0x0032 100 100 000Old_age Always - 55 (241 12 0) 12 Power_Cycle_Count 0x0032 100 100 000Old_age Always - 7 13 Read_Soft_Error_Rate0x0032 104 104 000Old_age Always - 9127078 100 Unknown_Attribute 0x0032 000 000 000Old_age Always - 4 170 Unknown_Attribute 0x0032 000 000 000Old_age Always - 8480 171 Unknown_Attribute 0x000a 100 100 000Old_age Always - 0 172 Unknown_Attribute 0x0032 100 100 000Old_age Always - 0 174 Unknown_Attribute 0x0030 000 000 000Old_age Offline - 6 177 Wear_Leveling_Count 0x 000 000 000Old_age Offline - 0 181 Program_Fail_Cnt_Total 0x000a 100 100 000Old_age Always - 0 182 Erase_Fail_Count_Total 0x0032 100 100 000Old_age Always - 0 184 End-to-End_Error0x0032 100 100 090Old_age Always - 0 187 Reported_Uncorrect 0x0012 100 100 000Old_age Always - 0 194 Temperature_Celsius 0x0022 028 033 000Old_age Always - 28 (Min/Max 20/33) 195 Hardware_ECC_Recovered 0x001c 120 120 000Old_age Offline - 9127078 196 Reallocated_Event_Count 0x0033 100 100 003Pre-fail Always - 0 198 Offline_Uncorrectable 0x0010 120 120 000Old_age Offline - 75479755259904 199 UDMA_CRC_Error_Count0x0032 200 200 000Old_age Always - 0 201 Unknown_SSD_Attribute 0x001c 120 120 000Old_age Offline - 9127078 204 Soft_ECC_Correction 0x001c 120 120 000Old_age Offline - 9127078 230 Unknown_SSD_Attribute 0x0013 100 100 000Pre-fail Always - 0 231 Temperature_Celsius 0x 100 100 011Old_age Offline - 0 232 Available_Reservd_Space 0x0032 000 000 000Old_age Always - 33 233 Media_Wearout_Indicator 0x0032 000 000 000Old_age Always - 6 234 Unknown_Attribute 0x0032 000 000 000Old_age Always - 7 235 Unknown_Attribute 0x0033 100 100 002Pre-fail Always - 0 241 Total_LBAs_Written 0x0032 000 000 000Old_age Always - 7 242 Total_LBAs_Read 0x0032 000 000 000Old_age Always - 5 Just look at the number under "198 Offline_Uncorrectable". Is this normal for this type of disk? Is smartctl misinterpreting the disk's features? The disk has been there essentially doing nothing and it presents such enormous numbers of errors. Why? This is under CentOS 7 (1511). ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Any experiences with newer WD Red drives?
any chance your SATA cables aren't up to SATA3 (6gbps) performance levels ? In my experience, that's the most likely cause. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Any experiences with newer WD Red drives?
I discovered, amidst great initial pain, that most, if not all, of the problems I had with SATA disks were caused by SATA cables and not by the disks themselves. Intermittent problems, such as disks randomly not showing up in RAID groups, were solved when I replaced the cables with proper ones. Some of the bad cables even came from well known names. Coincidence or not, all of the cables I had problems with were of the same general type: thin and covered with wrapped aluminum foil. I don't think I ever had problems with the flat, wider ones. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Any experiences with newer WD Red drives?
However, the latest C7 server I built, ran into problems with them on on a Intel C236 board (SuperMicro X11SSH) with tons of "ata bus error write fpdma queued". Googling on it threw up old suggestions to limit SATA link speed to 1.5Gbps using libata.force boot options and/or noncq. Lowering the link speed helped to reduce the frequency of the errors (from not getting a smartctl output to getting a complete listing within 2 tries). I discovered, amidst great initial pain, that most, if not all, of the problems I had with SATA disks were caused by SATA cables and not by the disks themselves. Intermittent problems, such as disks randomly not showing up in RAID groups, were solved when I replaced the cables with proper ones. Some of the bad cables even came from well known names. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] C7 AD server
>> How I can assing permission on this share? You can easily do it by following the instructions on the Samba Wiki: https://wiki.samba.org/index.php/User_Documentation ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] C7 AD server
>> Try this. I have been thinking of trying it on C7. >> http://www.linuxhelp.net/forums/index.php?showtopic=10868 I wouldn't follow the instructions on that link. Disable iptables? Nah! The author lumps SELinux and the firewall together. What is said about DNS is also misleading. DNS is crucial for AD. Please look at the Samba Wiki instead. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CENTOS not DoD approved
nowhere does it say that centos is approved for use in DoD. it is not on the APL, only RedHat and SuSE So what? If that is so important to you, you can go and buy a RedHat license. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] which uuid to specify a raid in fstab
Assuming your raid group is /dev/md127, you can run: ls -l /dev/disk/by-uuid or blkid /dev/md127 and use the ID both will show for /dev/md127 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] selinux allow FTP
Heh.. yeah. But the client isn't gonna go for that. LOL. Any way to allow regular ol' FTP using SELinux? Or does that just defeat the purpose of having a secure SELlinux server entirely? Maybe use FTP in a jail? Or Linux containers? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ZFS
Maybe you can tune ZFS further, but I tried it in userspace (with FUSE) and reading was a almost 5 times slower than MDADM. That alone is meaningless. MDADM with which filesystem? Zfsonlinux does not work in user space, it is a kernel module. Just try it. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SAMBA as AD DC
Why don't you use Sernet Enterprise Samba? (...) they do not provide RPMs for RHEL/CentOS 7. So this seems not to be an option. As someone said before, you don't need to use the latest and greatest to run a functional service... On a production environment that is even often undesirable until things settle down... Anyway, Sernet also provides a source rpm. Why not build up from that base? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SAMBA as AD DC
Why don't you use Sernet Enterprise Samba? They provide precompiled packages for a bunch of distros. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT hard disk geometry
With some SATA drives the mode change can only be done by a software utility. Some of them don't have jumpers at all. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT hard disk geometry
The server's manual recommends filling the drive bays in the 1,2,3,4 order. At this point, you should check the HP support page for the server, Look for controller firmware updates, BIOS updates, troubleshooting advice and so on. Did you try to connect the drive alone? If it is detected alone, you will have a clue there. Some drives don't go along with some others when installed in the same pair of ports, for example. I would also suspect the cable. I have had more problems with SATA cables than I could expect. Also, the drive itself can be defective. I once received two new WD high end drives that couldn't be detected by any controller and I had to return them. The new ones worked fine. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT hard disk geometry
It seems to me that there's some confusion on your part about what a SATA power connector is... The SATA edge connector is divided in two parts, a larger one and a narrower one. The narrower one is the signal, or data, connector. The larger one is the power connector. Some older drives also had an additional common Molex connector for power, for compatibility reasons, since at first only a few power supplies had the SATA power connector. Note that the Molex connector does not enable the hot-plugging and unplugging of SATA drives. This needs the 3.3V supply that only the SATA connector provides. As far as I can see, the ST3250318AS does not have such a connector. The manual for the ST3250318AS is here: http://www.seagate.com/staticfiles/support/disc/manuals/desktop/Barracuda%207200.12/100529369b.pdf On page 28 you can read about the SATA cables and connectors. The pins you refer to, which are not present on the WD at the same position, are NOT power connections, that is a jumper block as you can read on the first image of page 28. The manual states the following: « It is usually not necessary to set any jumpers on the drive for proper operation; however, if you connect the drive and receive a “drive not detected” error, your SATAequipped motherboard or host adapter may use a chipset that does not support SATA speed autonegotiation. If you have a motherboard or host adapter that does not support autonegotiation: -Install a jumper as shown in Figure 1 below to limit the data transfer rate to 1.5 Gbits per second (and leave the drive connected to the SATA-equipped motherboard or host adapter that doesn’t support autonegotiation) or -Install a SATA host adapter that supports autonegotiation, leave the drive jumper block set to “Normal operation” (see Figure 1 below), and connect the drive to that adapter. This option has the benefit of not limiting the drive to a 1.5 Gbits/sec transfer rate. » I think this is not a power connector issue. The WD is a SATA3 drive (6gb/s). Are you sure that your motherboard supports SATA3 drives? Maybe SOME ports support them while others do not? If not, can you force the WD to operate in a lower mode? Some drives can, either by hardware or software. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT hard disk geometry
that I am running CentOS-6.5 on my HP MicroServer. Can you please tell us which exact model of MicroServer do you have? That way, it will be easier to help you. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 6.4 Release Date.
I just checked the mirrors this morning and nothing has shown up for 6.4. That's strange! Yesterday I've seen it in a few mirrors, including a couple here in Portugal. As an example: ftp://ftp.dei.uc.pt/pub/linux/CentOS/6.4/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] md raid 10
the problem with that is when your boot drive dies your can't boot...with ubuntu at least if any drive dies i can stilll boot off of the other 3..:) You don't need a boot drive, you only need a *boot partition*. So, you create a small *boot partition* with RAID1 and then allocate the rest of your drives to a RAID10 array. You will still have redundancy (RAID1) on your boot partition. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] md raid 10
i then have to redo my entire array...and loose space inside the array. Plus if i raid1 it then i only have two bootable disks..at least this way i have 4 bootable disks..:) Lose space? 100 or 200MB? Why the heck wouldn't you be able to spare 100 or 200MB of the gigantic size of today's drives? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] md raid 10
Plus if i raid1 it then i only have two bootable disks..at least this way i have 4 bootable disks..:) No, you don't have 4. Please study the way a RAID10 array works. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Software RAID1 with CentOS-6.2
A few months ago I had an enormous amount of grief trying to understand why a RAID array in a new server kept getting corrupted and suddenly changing configuration. After a lot of despair and head scratching it turned out to be the SATA cables. This was a rack server from Asus with a SATA backplane. The cables, made by Foxconn, came pre-installed. After I replaced the SATA cables with new ones, all problems were gone and the array is now rock solid. Many SATA cables on the market are pieces of junk either incapable of coping with the high frequencies involved in SATA 3Gb/s or 6Gb/s or their connector are made of bad quality plastics unable to keep the necessary pressure on the contacts. I had already found this problem with desktop machines, I simply wouldn't believe that such a class of hardware would exhibit it also. So, I would advise you to replace the SATA cables with good quality ones. As an additional information, I quote from the Caviar Black range datasheet: Desktop / Consumer RAID Environments - WD Caviar Black Hard Drives are tested and recommended for use in consumer-type RAID applications (RAID-0 /RAID-1). - Business Critical RAID Environments – WD Caviar Black Hard Drives are not recommended for and are not warranted for use in RAID environments utilizing Enterprise HBAs and/or expanders and in multi-bay chassis, as they are not designed for, nor tested in, these specific types of RAID applications. For all Business Critical RAID applications, please consider WD’s Enterprise Hard Drives that are specifically designed with RAID-specific, time-limited error recovery (TLER), are tested extensively in 24x7 RAID applications, and include features like enhanced RAFF technology and thermal extended burn-in testing. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to setup a computer using CentOS6 as a firewall for the whole network in my place?
pfsense for a newbie? Yup! Based on the simple requirements that the OP expressed, i.e. a firewall for the whole network in my place, I would again recommend pfsense. It may seem paradoxical but it's not. It just *works* after a very simple and quick installation. The user only has to answer a couple of simple questions. A WAN interface and a LAN interface are ready and working together and that's it. It can be installed on anything, from a Compact Flash card to a USB sticker, it doesn't even need a hard disk. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to setup a computer using CentOS6 as a firewall for the whole network in my place?
pfsense for a newbie? A CentOS-like firewall would be ClearOS (formerly Clarkconnect) and again would reduce the number of simultaneously-learned layers to wade through. While it works very well, it is yet another layer and difference to learn, and when learning is is really good to not overload the number of layers to learn at once. IMHO, YMMV, etc. Since I have done cisco IOS stuff for a decade and a half, now, I'd recommend Vyatta over pfsense, but, there again, it is yet another, different, layer to learn that *will* overwhelm a newbie. Isn't Vyatta a comercial product? I suppose that it wouldn't fit a newbie either... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to setup a computer using CentOS6 as a firewall for the whole network in my place?
Why does it have to be CentOS? If you want a wonderful router/firewall that you can have up and running in a few minutes, you should look at this: www.pfsense.org I quote from their website: pfSense is a free, open source customized distribution of FreeBSD http://www.freebsd.org tailored for use as a firewall and router. In addition to being a powerful, flexible firewalling and routing platform, it includes a long list of related features and a package system allowing further expandability without adding bloat and potential security vulnerabilities to the base distribution. If you insist in using Linux instead, you could look at this: www.ipcop.org Once again, a distro specialized on the function it performs. Why have a generic and bloated system that you then have to customize from scratch when such wonderful specialized projects already exist? I use Linux servers and a pfsense firewall to protect the network. Works like a charm, with amazing stability and reliability. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] How to setup a computer using CentOS6 as a firewall for the whole network in my place?
For a newbie one like me ... which option you would advise me to go for? I do not have any special preferences but I do care for the one that is more stable and provide really more security. It seems to me that the last line of my previous post already contained my answer to your question :-) I use Linux servers and a pfsense firewall to protect the network. Works like a charm, with amazing stability and reliability. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] weird XFS problem
Now the machine is not particularly powerful: it is 64-bit machine, dual core CPU, 3 GB RAM. So perhaps this is a factor in why I am having the following problem: once in awhile that XFS partition starts generating multiple I/O errors, files that had content become 0 byte, directories disappear, etc. Every time a reboot fixes that, however. So far I've looked at logs but could not find a cause of precipitating event. Is the CentOS you are running a 64 bit one? The reason I am asking this is because the use of XFS under a 32 bit OS is NOT recommended. If you search this list's archives you will find some discussion about this subject. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] weird XFS problem
Correction to the above: the XFS partition is 26TB, not 16 TB (not that it should matter in the context of this particular situation). Yes, it does matter: Read this: *[CentOS] 32-bit kernel+XFS+16.xTB filesystem = potential disaster* http://lists.centos.org/pipermail/centos/2011-April/109142.html ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] weird XFS problem
uname -a Linux nrims-bs 2.6.18-274.12.1.el5xen #1 SMP Tue Nov 29 14:18:21 EST 2011 x86_64 x86_64 x86_64 GNU/Linux this is clearly a 64-bit OS so the 32-bit limitations ought not to apply. Ok! Since you didn't inform us in your initial post, I thought I should ask you in order to eliminate that possible cause. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] weird XFS problem
Nevertheless, it seems to me that you should have more than 3GB of RAM on a 64 bit system... Since the width of the binary word is 64 bit in this case, 3GB correspond to 1.5GB on a 32 bit system... If you have a 64 bit system you should give it space to work properly. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] weird XFS problem
Nevertheless, it seems to me that you should have more than 3GB of RAM on a 64 bit system... Since the width of the binary word is 64 bit in this case, 3GB correspond to 1.5GB on a 32 bit system... If you have a 64 bit system you should give it space to work properly. ... and the fact that a reboot seems to fix the problem could also point in that direction. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] weird XFS problem
You are right - it would indeed be desirable to have more than 3 GB of RAM on that system. However it is not obvious to me that having that little RAM should cause I/O failure? Why? That it would make the machine slow is to be expected - and especially so given that I had to jack the swap up to some 40 GB. But I do not necessarily see why I should have outright failures due solely to not having more RAM. If I were you, I would be monitoring the system's memory usage. Maybe some software component has a memory leak which keeps worsening until a reboot cleans it. Also, I wouldn't discard the possibility of a physical memory problem. Can you test it? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Dedicated Firewall/Router
I want to build a dedicated firewall/router as I am launching a NPO and I can host this in my garage. (Comcast offered me a 100 x 20 circuit for $99/mo with 5 statics) Thoughts, opinions, suggestions are welcome as to what to do! http://www.pfsense.org/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Samba + Openldap
Anyone have an update tutorial/howto for samba to authenticate to ldap? http://www.samba.org/samba/docs/man/Samba-Guide/happy.html ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Two ftp clients? Why?
What I'm left wondering is: 1) Why you are relying on PATH expansion for this from something as critical as a cron job. It is good sysadmin practice to specify explicit paths for situations like this rather than to worry about whether or not there is a good or valid reason for there being 2 ftp clients installed on the system. That was precisely my thought. I often noticed that people find it easier to blame others rather then questioning and rethinking their own actions... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Slightly OT: First Time KVM and LVM on Centos
(...) I am hoping that someone here can give me some pointers, or point me to some clear how-to's somewhere. Any help is appreciated. Thanks Some good guides on virtualization and LVM reside here: https://access.redhat.com/knowledge/docs/Red_Hat_Enterprise_Linux/ vmware also has some very useful documentation: http://www.vmware.com/support/pubs/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] securing ldap with tls and security
I think that the most secure setup is to use both LDAPI (ldap connections over Unix sockets) for connections inside the ldap server and TLS for connections from everywhere else on the network. Plus, ldapi connections are much faster than TCP connections. Am I wrong? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 1U firewall hardware
You can use something like this Atom 525 dual core motherboard: http://www.jetwaycomputer.com/NF99.html Or this Atom C550 dual core board: http://www.jetwaycomputer.com/NC9C.html With the AD3INLAN-G daughterboard: http://www.jetwaycomputer.com/Daughter_Board.html This will give you 5 Gigabit Ethernet ports (2 on PCIe and 3 on PCI) and a free PCI slot on which you can put up to 4 more. Of course it all depends on the needed concurrent traffic. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 1U firewall hardware
pci is a shared bus with a max of 2 gigabits. you'll see a gigabit but never see two or more. I am aware of that. But as I said it depends on your particular needs in *concurrent* traffic. Although it cannot sustain simultaneous Gigabit debits on all interfaces, i can sustain Gigabit bursts that are not simultaneous, as is often the case. I have found that such a solution is perfectly capable when isolating a LAN, or several LANs, from a WAN, for example. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 1U firewall hardware
pci is a shared bus with a max of 2 gigabits. you'll see a gigabit but never see two or more. I am aware of that. But as I said it depends on your particular needs in *concurrent* traffic. Although it cannot sustain simultaneous Gigabit debits on all interfaces, i can sustain Gigabit bursts that are not simultaneous, as is often the case. I have found that such a solution is perfectly capable when isolating a LAN, or several LANs, from a WAN, for example. If you really need concurrent Gigabit traffic on several interfaces, I would suggest that you get proper *dedicated* firewall/router hardware instead of building one from standard parts. It will be much more efficient. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 1U firewall hardware
I would defiantly stick with PCIe for 5 NICs. Additionally Realtek NICs don't offer the best performance and their drivers are hit or miss. The Supermicro board has Intel PCIe NICs onboard and a PCIe expansion slot. This should give you full performance depending on the Atom processor. It really comes down to if you are just moving packets or needing to do packet inspection The daughterboard I pointed to contains Intel 3 Gigabit chips. By the way, the OP never told us what would be the intended use for the firewall he needs. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 1U firewall hardware
The daughterboard I pointed to contains Intel 3 Gigabit chips. Ooops, I meant *3 Intel Gigabit chips*. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 1U firewall hardware
I'm assuming the OP is trying to save money. A firewall with 5xGbe interfaces is going to thousands of dollars. I was assuming the same. That's why I suggested the Jetway solution. I is economic and works very well in many scenarios. Not, of course, if you need *concurrent* Gigabit access on several interfaces. I stress *concurrent*. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 1U firewall hardware
I was assuming the same. That's why I suggested the Jetway solution. I is economic and works very well in many scenarios. Not, of course, if you need *concurrent* Gigabit access on several interfaces. I stress *concurrent* I built one of these to connect several vlans to a 24Mbit ADSL internet access. It runs pfsense 2.0 and it works very well. Stable, fast and effective. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] 1U firewall hardware
Does it have to be 1RU ? This one is 1U: http://routerboard.com/pricelist.php?showProduct=98 13 Gigabit ports ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Affordable KVM over IP switch
Ok, I won't argue with that; a it fails in this scenario overrides a it works for me. I will add though, that were it got into the state described above was where I was able to recover it by using the reset button. You might want to try that next time instead of the cable disconnect solution My unit does not have a reset switch. I told you it's a PITA :-) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Affordable KVM over IP switch
Which is about $400, not counting cables, which are expensive. Well, you said not thousands of dollars... And I bought the cables for about 20 dollars each. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Affordable KVM over IP switch
That part isn't a function of the iPEPS, it's a function of your KVM switch. So yes, I was thinking about models that do it with a particular key stroke. I've used the D-Link DKVM-8E as a decent low cost unit, although it has the tendancy to get confused during a full power outage of your data center, requiring a hard reset. Because the DKVM-8E takes power from both its own power brick and from the keyboard connectors, you can't reset it by using a remote power distribution unit; you have to have someone present in the data center press a button. Given my druthers, I'd use a different unit that didn't exhibit this behavior, but I find it's not too onerous (I've had two cases in the last 18 months that required this on-site intervention, and even then the servers are fine; I just can't reach the consoles.) The D-Links are NOT suitable for professional use. I used one of their models and it hanged on me multiple times. Because it is powered by the keyboard/mouse/video connectors, the only way to recover it is to physically disconnect ALL cables and reconnect them again. As long as ONE of the sources of power is connected, the unit won't recover. Someday you quickly need to access a machine only to suddenly discover that you are stuck and can go nowhere. A real PITA! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Affordable KVM over IP switch
Are there any KVM over IP switches that are not thousands of dollars? Ideally a 3-4 port switch for a few hundred seems reasonable to me. Try this 8-port one from LevelOne: http://global.level1.com/Business-Products/KVM-Switches---Extenders/Rackmount-KVM-Switches/KVM-0831/421.html It has an expansion slot which accepts a IP module: http://download.level1.com/level1/manual/ACC-2000v1.0_UM.pdf I use the base KVM, without the IP module, and it is very stable. It connects a USB keyboard and a USB mouse to USB and/or PS2 ports on the servers. It is also cascadable. I hope this helps. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Rebuilding samba3x rpms results in size doubled
I have rebuilt samba3x SRPM in Centos 5.5. The resultings RPM's are nearly in triple size of the original RPMs. I have installed and checked the binary files are stripped. What can result in such difference in RPM sizes? Debugging information not removed from binaries? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CENTOS 5 (X86 32 bits) only support 16 Gb RAM???
I think I did not say clearly. It is NOT application can use 4GB MAX. What I say is HARDWARE(server) HAVE 64gb ram OR 128 gb ram but O.S. only understand 16 GB. That was clear from the beggining. With that amount of RAM you should really use a 64 bit OS. Otherwise, you will be doing a disservice to yourself... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Building Samba RPM packages for RHEL/CentOS 5 - Needed corrections to the .spec file
I just built from source the Samba 3.5.6 RPM packages for CentOS
5.x/RHEL5.x.
I found some glitches in the included samba.spec file and I thought
someone else might benefit from my recent experience. The spec file for
RHEL/CentOS resides, on the sources tree, under
samba-3.5.6\packaging\RHEL\.
1 - The process initially fails due to a dependency problem: missing
keyutils-devel. Change the respective entry on line 31
(BuildRequires:) to keyutils-libs-devel (yum install this file from
the repositories if needed).
2 - Although it is called by the packaging process, the umount.cifs
file is not compiled and therefore cannot be found in sources3/bin at
the moment of packaging. Therefore, the RPM build process fails. Either
comment the references to the file from lines 237, 396 and 414, if you
don't need this function, or add the following to the ./configure
command, starting on line 137:
--with-cifsumount
The default for this parameter is no, and therefore it is not included
in the configure process as is.
3 - The RPM build process finally fails because some files, which were
compiled and copied to the temporary tree, are not called by the
packaging process. The following lines must be included on the spec
file, under Files section:
/usr/share/locale/de/LC_MESSAGES/net.mo
%{_includedir}/wbc_async.h
%{_mandir}/man5/pam_winbind.conf.5.gz
I suggest you include them close to related lines (same paths) for the
sake of clarity.
After these corrections the build of the RPM packages went on with no
errors and was successful. All the packages installed correctly afterward.
I hope these tips will be useful to someone.
PS - The sources for Samba 3.5.6 are here:
http://www.samba.org/
Before building, you might be interested in patching the sources with
the patch provided by Volker Lendecke to improve compliance with Windows
ACLs. The patch is here, thanks to Volker:
http://samba.org/~jra/samba-3-5-x-acl-jumbo-patch.tgz
patch -b -p1 jumbo-patch-3-5-6.diff
After applying the patch and modifying the .spec file you can proceed to
the building process. cd to
/usr/src/redhat/SOURCES/samba-3.5.6/packaging/RHEL and execute the
makerpms.sh script there.
___
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Re: [CentOS] how to set ACLs on windows share
I have to get/set acls on a windows share by script. I can mount the windows share by mount.cifs but I don't know how to set/get acls... anyone could help me ? thx so much. You would benefit from posing this question to the Samba mailing list: sa...@lists.samba.org Do you want to set the ACLs from the Windows side or from the Unix server side? What do you use to store ACLs? Linux ACLs? A Samba VFS module? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] LDAP authentication on a remote server (via ldaps://) [SOLVED]
The reason why I (think I) need both is that many third party apps on the server (PHP applications typically) do not easily manage StartTLS. Meanwhile, having two different ports make it easier to manage via iptables. You can also use StartTLS over the network and LDAPI (connection over Unix sockets, which are inherently secure) for apps running on the server. I use it, both with OpenLDAP and 389 Directory Server (a.k.a. Fedora DS, Red Hat DS). ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] LDAP authentication on a remote server (via ldaps://) [SOLVED]
Are you aware that SSL on port 636 is now considered deprecated in favor of START_TLS on port 389? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] LDAP authentication on a remote server (via ldaps://) [SOLVED]
Are you aware that SSL on port 636 is now considered deprecated in favor of START_TLS on port 389? No, I'm not (I actually thought that it was the other way round) (...) What are the pro and cons of both approaches? Comments more than welcome You can, as an example, consult the Wikipedia article on LDAP. It states: --- StartTLS The StartTLS operation establishes Transport Layer Security (the descendant of SSL) on the connection. It can provide data confidentiality (to protect data from being observed by third parties) and/or data integrity protection (which protects the data from tampering). During TLS negotiation the server sends its X.509 certificate to prove its identity. The client may also send a certificate to prove its identity. After doing so, the client may then use SASL/EXTERNAL. By using the SASL/EXTERNAL, the client requests the server derive its identity from credentials provided at a lower level (such as TLS). Though technically the server may use any identity information established at any lower level, typically the server will use the identity information established by TLS. Servers also often support the non-standard LDAPS (Secure LDAP, commonly known as LDAP over SSL) protocol on a separate port, by default 636. LDAPS differs from LDAP in two ways: 1) upon connect, the client and server establish TLS before any LDAP messages are transferred (without a StartTLS operation) and 2) the LDAPS connection must be closed upon TLS closure. LDAPS was used with LDAPv2, because the StartTLS operation had not yet been defined. The use of LDAPS is deprecated, and modern software should only use StartTLS . http://en.wikipedia.org/wiki/LDAP --- A quick search will provide plenty of articles about the subject. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] EXT4 mount issue
Can you give us the output of tune4fs -l /dev/sdb ? Does it show has_journal under Filesystem features? If it doesn't, you can input the following: tune4fs -o journal_data The option journal_data fits the case in which you don't care about the fastest speed but you put your focus on data integrity instead. By the way, if you only used the defaults when creating the ext4 filesystems, I am afraid that you didn't use the ext4 specific features that give it a real advantage over ext3. Some of them cannot be configured latter, they have to be specified when you create the filesystem. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] EXT4 mount issue
Below is the output from tune4fs. From what people are saying it looks like et4 may not be the way to go. What people are saying? So instead of understanding and solving some issue you just jump wagon, maybe only to find some other issue there? ext4 is stable and works perfectly. You just have to configure it properly, as with anything. Can you still recreate the filesystems? If so, study the parameters for ext4 and use them. You will want extents, because it provides a much better use of disk space and avoids fragmentation. As you are, you can still create a journal on the filesystem you have, using tune4fs. Look under switch -o (options). As an example, I give you some of what I have here with a ext4 partition: In /etc/fstab: LABEL=/data1/data ext4 defaults,data=journal,acl,user_xattr 1 2 tune2fs gives me the following: Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize Filesystem flags: signed_directory_hash Default mount options:journal_data user_xattr acl Regards ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] EXT4 mount issue
Filesystem state: not clean You should really look at that line and at why it is there. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] EXT4 mount issue
I was just a little worried at the response from Brent earlier quote Don't play Russian Roulette and use ext4. . Maybe he was referring to some old information dating back to the development period. ext4 has been declared stable by the kernel people. As a matter of fact it is now the default filesystem for several major Linux distros. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] EXT4 mount issue
The defaults are determined by /etc/mke2fs.conf. If you've modified or removed that file, mkfs.ext4 will behave differently On my CentOS 5.5 systems, defaults for ext4 reside on /etc/mke4fs.conf. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Raid 10 questions...2 drive
And don't do it that way. If you have a single drive failure with RAID 0+1 you've lost *all* of your redundancy - one more failure and you are dead. If you create two RAID1 sets and then strip them into a RAID0 you get pretty much the same performance and space efficiency characteristics, but if you have a drive failure you still have partial redundancy. You could actually take a *second* drive failure as long as it was in the other RAID1 pair. With 4 drives raid0+1 can only survive 1 drive failure. With 4 drives in raid 1+0 you can survive an average of 1.67 drive failures. Indeed. This article explains the odds of loosing data with RAID 1+0 vs 0+1: Why is RAID 1+0 better than RAID 0+1? http://www.aput.net/~jheiss/raid10/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Raid 10 questions...2 drive
Mdraid10 actually allows for a 3 drive raid10 set. It isn't raid10 per say but a raid level based on distributing copies of chunks around the spindles for redundancy. Isn't this what they call RAID 1e (RAID 1 Enhanced), which needs a minimum of 3 drives? This seems to me a much better name for it than calling it RAID 10... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Raid 10 questions...2 drive
The raid1e type probably didn't exist when Neil Brown came up with the algorithm. You are probably right. He should have patented it though... Maybe... Maybe he started out with the idea to create a raid10, but didn't want the complexity of managing sub-arrays so decided just to redistribute chunk copies instead and then it took off from there. Yes. I didn't want to sound harsh to him. I am VERY grateful for his outstanding work. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] how to show that a filesystem is ACL-enabled?
can someone clarify this? is there a command that shows whether a filesystem is currently acl-enabled? and is the mount man page simply incomplete in that respect? thanks. tune2fs -l /dev/[hda1,sda1] The values between [ ] are an example only. Replace, of course, with your own storage device. Look at Filesystem features and Default mount options. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Anyone Having Any Luck Downloaing the DVD ISO?
I don't quite understand why all this fuss about some DVD ISOs... At least the Portuguese mirrors work very nicely... Here's an example: ftp://ftp.di.uminho.pt/pub/centos/5.5/ Regards ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] boot process glitch due to missing 2nd disk
This is not a Dell-specific BIOS hack. Dear child, ask your folks about PCs. I think it was only this decade that PCs would actually boot *without* a keyboard. EVERY PC EVER MADE before would not. Nah! Every BIOS since I remember (at least from 1990) had a choice on the first page, Standard BIOS Setup. Halt on all errors, Halt on keyboard/video errors, Halt on no errors. At least these three were always present. Of course the default is always Halt on all errors. Unless you modify the settings on purpose, that's what happens. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] boot process glitch due to missing 2nd disk
This is not a Dell-specific BIOS hack. Dear child, ask your folks about PCs. I think it was only this decade that PCs would actually boot *without* a keyboard. EVERY PC EVER MADE before would not. Nah! Every BIOS since I remember (at least from 1990) had a choice on the first page, Standard BIOS Setup. Halt on all errors, Halt on keyboard/video errors, Halt on no errors. At least these three were always present. Of course the default is always Halt on all errors. Unless you modify the settings on purpose, that's what happens. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Samba and (and maybe other characters) in paths/files
I have samba installed on my server, with a fileshare. When connecting to
samba, using windows, filesnames with (double quotes) in them become
gibberish on the windows client.
Since Windows doesn't allow double quotes in filenames, Samba doesn't
either.
Single quotes (') are allowed and you can use them instead.
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Re: [CentOS] XFS on CentOS
Does anybody know why unlike so many Linux distros (Fedora, Ubuntu, OpenSUSE) CentOS does not come with XFS support by default but rather requires custom modifications after the install in order for you to be able to support XFS on your CentOS machine? Just seems a little odd given how much CentOS is oriented to be used as a server OS The 64 bit version of CentOS does support XFS. The reason why it is only supported by the 64bit version has recently been discussed on this list. Please search the list's archives. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] XFS on CentOS
It's not available in the installer since it's considered a technology preview by Redhat. ... which causes no problem whatsoever. It is normally used for data partitions, not system partitions. One can install the OS and then create the necessary partitions with XFS. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Disabling services in CentOS 5.5
The following NSA document provides very good information on the secure configuration of Red Hat Enterprise Linux 5/CentOS 5.x: Guide to the Secure Configuration of Red Hat Enterprise Linux 5 http://www.nsa.gov/ia/_files/os/redhat/rhel5-guide-i731.pdf It goes through almost all the services and gives you guidance on whether and how you should disable a service. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] where to download CENTOS 5.5 DVD version??
I want to CENTOS download side and tried to download CENTOS 5.5 X86_64 DVD version. I can NOT find on any site Somebody already answered to you, but I will repeat: http://isoredirect.centos.org/centos/5/isos/x86_64/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] where to download CENTOS 5.5 DVD version??
One more mirror with DVD ISOs, this one in Portugal: ftp://ftp.di.uminho.pt/pub/centos/5.5/isos/x86_64/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] where to download CENTOS 5.5 DVD version??
One more, also in Portugal: http://mirrors.nfsi.pt/CentOS/5.5/isos/x86_64/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] where to download CENTOS 5.5 DVD version??
ISOs here: http://mirror.chpc.utah.edu/pub/centos/5.5/isos/x86_64/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] where to download CENTOS 5.5 DVD version??
When I try to download, none of the mirrors in UK seems to have these isos, nor in the nearby countries mirrors Here in Portugal practically all the mirrors have them :-) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ulimit [SOLVED]
I know it works because I just tested it and it survived the server's reboot. I ran ulimit -a and the new value was there. ...from a login shell. If you don't have a login shell /etc/profile isn't read on bash startup. In my case, I am doing the change because of Samba. When you run tesparm, the lastest versions of Samba give the following warning: rlimit_max: rlimit_max (1024) below minimum Windows limit (16384) When I add the line ulimit -n 1024 to /etc/profile, the warning disappears, even after a reboot. So, this certainly works for processes running as root. But you are right in that it will probably depend on the particular user requirement. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ulimit
I need to to change the ulimit to 16384(ulimit -n 16384) on boot on Centos 5.4 64 bit. How do I do that? Been searching and have yet to find a good answer. Tried to do it in rc.local but it appears to happen to late there In order to make the change permanent, add the following line to /etc/security/limits.conf: * - nofile 16384 From limits.conf's header: «Quote: - the wildcard *, for default entry - nofile - max number of open files ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ulimit [SOLVED]
I need to to change the ulimit to 16384(ulimit -n 16384) on boot on Centos 5.4 64 bit. How do I do that? After replying to you, I tested the solution I gave you and it didn't work. I found a working solution. I added the following line to /etc/profile: ulimit -n 16384 This works as the general default setting. If you want to apply the setting to a particular user, you should add it to the .bash_profile file in the user's home directory. I know it works because I just tested it and it survived the server's reboot. I ran ulimit -a and the new value was there. Please excuse me for the involuntary mislead. I was pretty sure that it did work once upon a time... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Forgetting network settings
i am adding routr options with route add -net xxx dev eth0 but when i reset computer it is not in netstat table anymore In about five (5) seconds I found this on Google: Adding Persistent Routes http://www.centos.org/modules/newbb/viewtopic.php?viewmode=flattopic_id=1927forum=30 I suppose you would be able to find it too... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] generate certiciate help
Maybe this will help: http://www.ibm.com/developerworks/lotus/library/ls-Certification_Authority/index.html ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [OT] CAT5 IP-capable rackmount KVM units?
Overall using CAT5 is a lot easier, just don't make the mistake of thinking that it's ethernet. CAT5 just provides the wires, the signaling is proprietary and would probably fry an ethernet port if you plugged one in. I suggest using different color cables specifically for the KVM connections. That may be true for the solution you know but certainly it is not true for many solutions out there. Look for KVM over IP. As a quick example, see this page: http://www.lindy-usa.com/kvm/extenders-listed-by-features/kvm-over-ip/ You can even control equipment over the Internet. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [OT] CAT5 IP-capable rackmount KVM units?
What you're referring to is accessing the KVM box itself via IP, which the Aten does allow. What Aten *also* does is use CAT5 cable to link the KVM switch to various adapters which plug into the server(s). It's the signalling on those lines that Brian was referring to, not remotely accessing the KVM itself. Ok! Sometimes we jump to conclusions without reading carefuly. Sorry! Thank you for the explanation. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS 5.4 - Problem with Enumeration of NICs
I just made a new CentOS 5.4 installation. The machine has an Intel 10/100 and an Intel GB on board, and a Broadcom GB card on a PCI-X (64 bit) slot. After the install finished, I noticed that the order and naming of the Ethernet interfaces is totally screwed up. Under Network Manager, the Intel GB card shows the MAC address of the Broadcom and vice-versa. As a consequence, none of them works. When I push the Probe button, they show each other's MAC Adress. The names of the devices do not correspond to the names of the interfaces. If I correct the problem by manually editing the configuration files, they MAY get wrong again upon reboot. Only the 10/100 interface stays put. After a remote reboot for kernel update, I just lost connection with the machine, so I guess it happened again. This NEVER happened with CentOS 5.2 or 5.3 on the same machine. I want to manually assign a ID to the cards and let them keep it forever. Will the manual entry of the HWADDR=/ /parameter in the ifcfg-ethx files fix this for good or will it be overrided by some other component of the OS? Thank you. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 5.4 - Problem with Enumeration of NICs
As I recall my solution was to comment out the modprobe alias created for the network cards (/etc/modprobe.conf) and then in network-scripts, use the HWADDR in each config script. Make sure the device=ethX matches the name of the file, if nothing else, for your own sanity - since the OS checks that line, and does not care what the file is named. Thank you for your answer. I will look it up. I found this useful article: Linux Enumeration of NICs http://linux.dell.com/files/whitepapers/nic-enum-whitepaper-v4.pdf The author, a Dell employee, made a script to automate the process of ordering the NICs. He also gives tips to manually solve this recurring problem. Regards Miguel ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Is ext4 safe for a production server?
XFS is not stable on 32-bit systems. You should not use it there. You need a 64-bit kernel. Default for servers should be 64-bit now anyway. Not many reasons left for a 32-bit system, and more and more 3. party applications have less and less support for 32-bit platforms in general. That is for you rich people :-) Not everyone can afford the latest and greatest server hardware. There are tons of older servers out there. I still manage some servers with only 2GB of RAM and some of their motherboards accept a *maximum* of 4GB. Those precious few GB are better used with a 32bit OS, don't you agree? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
