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Re: [CentOS] scanner only works in su mode
by m.roth＠5-cent.us 26 Sep '13

26 Sep '13

Michael Hennebry wrote: > On Thu, 26 Sep 2013, Robert Heller wrote: > >> It looks like to use the scanner you need to edit your /etc/group file or use the user manager to add yourself to the lp group. > > That did not work. > I ran a separate login to get one that admitted I was in the lp group. Applying strace to hp-scan told me that it could not open > /dev/bus/usb/001/006 for writing. > Its owner and group are both root. I'll try again. google for centos 6 scanner ownership permissions The first hit I got is a thread on this list from '11 or last year. The last post in the thread ends with: Excerpt: Actual fix: 1) # scanimage -L device `epkowa:interpreter:001:005' is a Epson (unknown model) flatbed scanner to get the bus and the device (in the above, bus = 001; device = 005) 2) "lsusb" to get the ID # lsusb | grep -i "bus 001" | grep -i "device 005" Bus 001 Device 005: ID 04b8:0131 Seiko Epson Corp. 3) cd to the udev "sane" directory # cd /etc/udev/rules.d 4) find the "sane" configuration file. # ls | grep -i sane 60-libsane.rules 5) add an entry into the sane configuration file for your scanner. Note: the ATTRS{idVendor} is the first half of your ID above (04b8) the ATTRS{idProduct} is the second half of your ID above (0131) the name in the comments you make up yourself if you put all your users into group "users", then use "users" for the group below. If you use a different group for each user, then create a group called "scanners" (groupadd scanners), use "scanners" for the group below, and add each user to the "scanners" group # Epkowa Epson Perfection V300 ATTRS{idVendor}=="04b8", ATTRS{idProduct}=="0131", ENV{libsane_matched}="yes", MODE="0664", OWNER="root", GROUP="users" --- end excerpt --- Modify to fit your system and device. mark

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Re: [CentOS] scanner only works in su mode
by Michael Hennebry 26 Sep '13

26 Sep '13

On Thu, 26 Sep 2013, Robert Heller wrote: > It looks like to use the scanner you need to edit your /etc/group file or use > the user manager to add yourself to the lp group. That did not work. I ran a separate login to get one that admitted I was in the lp group. Applying strace to hp-scan told me that it could not open /dev/bus/usb/001/006 for writing. Its owner and group are both root. -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "On Monday, I'm gonna have to tell my kindergarten class, whom I teach not to run with scissors, that my fiance ran me through with a broadsword." -- Lily

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Re: [CentOS] scanner only works in su mode
by Michael Hennebry 26 Sep '13

26 Sep '13

On Wed, 25 Sep 2013, Robert Heller wrote: > At Wed, 25 Sep 2013 13:34:51 -0600 CentOS mailing list <centos(a)centos.org> wrote: > The proper cure for this is to add yourself to the group that udev puts the > device in. Look in /etc/udev/rules.d. Under CentOS 5 with hplip3-common > installed, this would be 55-hpmud.rules. I'm running centos 6. Googling tells me the corresponding centos 6 directory is /lib/udev/rules.d . There are no files with 55 or hp in their names, but there are 39 with the string usb . Where should I be looking? -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "On Monday, I'm gonna have to tell my kindergarten class, whom I teach not to run with scissors, that my fiance ran me through with a broadsword." -- Lily

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Best Practice to remove an ISCSI LVM from a system
by Götz Reinicke - IT Koordinator 26 Sep '13

26 Sep '13

Hi, I'd like to know what would be the best way to remove an iscsi lvm storage from a server. (removing all reference to that storage etc.) The storage in question will be reset and reformated and used on a different server; so no LVM export is needed. Do I have to do lvremove ..., vgremove ..., pvremove ... and do an iscsiadm -m node -T ... -p ... -u and iscsiadm -m node -o delete -T ... -p ... in order to achieve that? Or is there some more simple way? Thanks for any suggestion and best regards . Götz -- Götz Reinicke IT-Koordinator Tel. +49 7141 969 82 420 Fax +49 7141 969 55 420 E-Mail goetz.reinicke(a)filmakademie.de Filmakademie Baden-Württemberg GmbH Akademiehof 10 71638 Ludwigsburg www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzender des Aufsichtsrats: Jürgen Walter MdL Staatssekretär im Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg Geschäftsführer: Prof. Thomas Schadt

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Re: [CentOS] php fopen ssl error
by Markus Falb 25 Sep '13

25 Sep '13

On 25.Sep.2013, at 19:58, Reindl Harald wrote: > > > Am 25.09.2013 18:39, schrieb Markus Falb: >> On 25.Sep.2013, at 13:57, Kai Schaetzl wrote: >> >>> This should really be directed at a PHP forum. I would suspect that >>> something with the server certificate is not ok. >> >> oh my, >> centos says it's php thing >> php says, what?, 5.1.6 is seven years old >> >> http://marc.info/?l=php-general&m=138011820514388 >> >> The backporting oath? > > any why do you not update your crap? > PHP 5.1 is irrelevant these days Now I am irritated. RHEL 5 is supported until 2017, so is CentOS 5, isn't it? It comes with php and it comes with php53. You tell me I am a crapper because I use php. I would have expected such things from the php mailing list, but on CentOS…. In other words, do not tell me on the CentOS Mailing List that I am dumb if I use a package provided by CentOS (that's silly) > that's why CentOS/RHEL provides 5.3 packages without break environments rely on 5.1 It really doesn't break? I cant believe that. -- Markus

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scanner only works in su mode
by Michael Hennebry 25 Sep '13

25 Sep '13

Apparently I hadn't done any scanning since my move to centos. hp-scan works for root, but not for me as me. When I try to use xsane, it tells me no device found. When I try to use hp-scan as myself it tells me: error: Unable to locate device hpaio:/usb/Photosmart_C3100_series?serial=CN6ARC321S04KV using SANE backend hpaio:. Please check HPLIP installation. What do I change to make it let me use xsane or hp-scan as myself? This is what I get when scanning as root: [root@localhost tmp]# hp-scan -o fred.png warning: hp-scan should not be run as root/superuser. HP Linux Imaging and Printing System (ver. 3.12.4) Scan Utility ver. 2.2 Copyright (c) 2001-14 Hewlett-Packard Development Company, LP This software comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to distribute it under certain conditions. See COPYING file for more details. Using device: hpaio:/usb/Photosmart_C3100_series?serial=CN6ARC321S04KV Using device hpaio:/usb/Photosmart_C3100_series?serial=CN6ARC321S04KV Opening connection to device... Resolution: 300dpi Mode: gray Compression: JPEG Scan area (mm): Top left (x,y): (0.000000mm, 0.000000mm) Bottom right (x,y): (215.899994mm, 296.925995mm) Width: 215.899994mm Height: 296.925995mm Destination(s): file Output file: /tmp/fred.png Warming up... Scanning... Expecting to read 8.5 MB from scanner. Reading data: [******************************************] 100% 8.5 MB Read 8.5 MB from scanner. Closing device. Outputting to destination 'file': Saving to file /tmp/fred.png Done. BTW it lied about the compression. It gave me png. -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "On Monday, I'm gonna have to tell my kindergarten class, whom I teach not to run with scissors, that my fiance ran me through with a broadsword." -- Lily

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php fopen ssl error
by Markus Falb 25 Sep '13

25 Sep '13

Hi, With CentOS php53 I get an SSL Error <?php $handle = fopen("https://maps.google.com", "r"); $contents = stream_get_contents($handle); fclose($handle); ?> will result in something like Warning: stream_get_contents(): SSL: fatal protocol error in bla.php on line 3 Some https pages do not raise this error, e.g. https://www.redhat.com is fine What is wrong? How to debug? -- Markus

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Looking for input SELinux/Other & post-commit hooks.
by James A. Peltier 25 Sep '13

25 Sep '13

Hi All, I'm looking for input as to how I may restrict some post commit hooks by way of SELinux or some other mechanism. Here's a description of the problem that I need to solve. I have a source code server that support SVN and soon git. The server has no actual users on it and we use CAS with Apache basic authentication to authenticate and authorize users access to the repository. This server mounts two NFS shares, one for the mirror environment for HTTP based installations and another NFS share for our Puppet environment. There is a corresponding source repository and NFS share for each "user" of the system as well as corresponding NFS shares for mirror and puppet. All the content is owned by the user Apache. Each time a user commits scripts are run to check this code out of the source code server and into a respective /mirror/<repotype>/<reponame> /puppet/<repotype>/<reponame> But there are other bits of code that the end user would like to also be able to run, such as generating group information based on the content of a file that was committed manual pruning of some arbitrary data and other things that I don't want to account for in code. Essentially allowing them to extend the system further for their needs. This means that I need to ensure that a user isn't able to run code like rm -rf /etc/password or rm -rf /{mirror,puppet}/* which would essentially ruin everyone's data. What I essentially would like to do is ensure that if someone were to attempt to run any of the third party code that the permissions for that run would be within the context of their own areas so that the most damage they could do is wipe out the content of their /mirror/<repotype>/<reponame> & /puppet/<repotype>/<reponame> while not having to setup and destroy a (potentially) large chroot environment each time the script is run. -- James A. Peltier Manager, IT Services - Research Computing Group Simon Fraser University - Burnaby Campus Phone : 778-782-6573 Fax : 778-782-3045 E-Mail : jpeltier(a)sfu.ca Website : http://www.sfu.ca/itservices “A successful person is one who can lay a solid foundation from the bricks others have thrown at them.” -David Brinkley via Luke Shaw

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Dual Boot Windows 8 & CentOS 6.4
by amit joshi 25 Sep '13

25 Sep '13

Hi, I am studying for the RHCSA Exam and wanted to install CentOS 6.4 alongside Windows 8. I got a new laptop with a processor that supports virtualization. I am planning to remove all the recovery partitions after backing up all drivers etc. on them. Lets see how it works out. Any caveats I should know about? Regards adj

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Re: [CentOS] Run one-time startup script
by Kai Schaetzl 25 Sep '13

25 Sep '13

Reindl Harald wrote on Fri, 20 Sep 2013 14:32:46 +0200: > /etc/rc.d/rc.local Thanks for all the answers. First, I omitted to explicitely state that these are web servers. There is no dhcp, only one or, in a few cases, a few IP static IP addresses. Mostly Centos 5. Changing the data is *not* the problem. As already said this will mostly be done by replacing config files (cp -a, not mv, this assures it can be done even more than once without a problem, replacement operations in files always ask for trouble if something non-standard happens, not to mention one has to code this - it's easier just to provide the correct new files), and by reading in a sql command that replaces an IP address in some tables. The big question is when and how to do this. rc.local seems to be a good place for reading in the sql command. But it doesn't seem to be a good place for all the other commands, especially the initial network setup. It's executed *after* all ini stuff is done, e.g. all daemons and network are started. Problem is that some network services may hang the whole machine for a minute or longer if they cannot establish networking (which would be the case with wrong data either for the ifcfg files or the config file of the daemon). At the moment I know of only one daemon which behaves this way (bigsister), but I may have forgotten about others. I don't want to wait until the timeout kicks in, the init continues and rc.local eventually issues a service network restart. So, I would rather do all the "replace file" operations before any of that init stuff gets done. Is this possible without much ado? Or should I rather do the "replace file" operations at shutdown (how, when?) and execute only the sql command from rc.local? Google suggests a file /etc/rc.shutdown (or rc.local.shutdown?) which, if I understand correctly, would be carried out after the init stuff for the shutdown (rc0) has been done. Kai

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