[CentOS] Firefox Video Capability
One of our summer interns has stayed on during the school year to work some weekends on special projects. This past weekend, her assignment was to trouble shoot problems with Firefox when trying to view various on-line training videos. At some web sites, the video associated with the page will not play and we get the messages shown below. The Download statement is actually a link and was used to download this rpm file: adobe-release-x86_64-1.0-1.noarch.rpm. "Cannot Play Video" "The latest version of Adobe Flash is required to play this video." "Download the free Flash player here." The intern did not install this rpm because doing so outside of yum did not seem like a good idea. We also do not really know how the Adobe Flash utility is called up by Firefox and whether or not the installation would solve the problem or possibly cause other problems. This problem is not happening on our Windows 7 machines, but not everyone here has a Microsoft machine to use. On Windows, the Firefox occasionally updates itself when launched so that might explain the difference. The training videos always do play on Windows 7 systems when the web pages are brought up. We also noticed that on Windows 7 there are no Firefox related processes remaining after closing all Firefox browsers. This is not the case on our CentOS 6 systems as indicated in the output below. Is this video viewing issue a common problem, and if it is, can someone provide some direction to correct it. Thanks. ++ [user@computer ~]$ ps -elf | grep firefox 0 S user 3872 1 0 80 0 - 68607 poll_s Nov08 ? 00:00:00 /usr/lib64/firefox/bundled/libexec/at-spi-bus-launcher 0 S user 8178 8149 0 80 0 - 25832 pipe_w 19:42 pts/2 00:00:00 grep firefox [user@computer ~]$ ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Firefox Video Capability
On Tue, 13 Nov 2018 at 08:03, Chris Olson via CentOS wrote: > > One of our summer interns has stayed on during the school > year to work some weekends on special projects. This past > weekend, her assignment was to trouble shoot problems with > Firefox when trying to view various on-line training videos. > > At some web sites, the video associated with the page will > not play and we get the messages shown below. The Download > statement is actually a link and was used to download this > rpm file: adobe-release-x86_64-1.0-1.noarch.rpm. > > "Cannot Play Video" > > "The latest version of Adobe Flash is > required to play this video." > > "Download the free Flash player here." > In order for flash to work, the flash plugin must be installed on the computer. The reason that Flash is working on the Windows systems is that the Flash software must be installed and must have some sort of policy to allow it to run. https://support.mozilla.org/en-US/kb/keep-flash-up-to-date-and-troubleshoot-problems [SECURITY WARNING. FLASH IS NOT SAFE SOFTWARE ON ANY OPERATING SYSTEM SEE ADDENDUM] However that warning aside, you need to get training done. In order to get flash installed on CentOS you can do the steps outlined in https://www.tecmint.com/install-adobe-flash-on-centos-rhel-fedora-linux/ but I am rewriting step 1 as it is clearly secure 0. Stop any existing firefox sessions 1. wget wget http://linuxdownload.adobe.com/adobe-release/adobe-release-i386-1.0-1.noarch.rpm 2. yum localinstall adobe-release-i386-1.0-1.noarch.rpm 3. yum update 4. yum install flash-plugin nspluginwrapper alsa-plugins-pulseaudio libcurl 5. start a new firefox. 6. go to https://get.adobe.com/flashplayer/otherversions/ You should be asked to allow flash plugin to run. Go up to the URL bar at the top of the browser and to the left of the URL there should be something that looks like a lego block or a car battery. Click on it and allow flash. You will need to do this for every website or change the browser settings to allow it as Flash is considered a security risk these days. Since it is working on your other systems, this must be done via a GPT or never updating the firefox/flash to a version which requires addtional controls. Flash is considered to at the end of its functional life, so please let your training program know they need to move to another video source in the next 1.5 years at that point it will probably become a security audit risk. https://www.darkreading.com/vulnerabilities---threats/adobes-move-to-kill-flash-is-good-for-security/d/d-id/1329472 https://searchsecurity.techtarget.com/news/450423574/Adobes-Flash-end-of-life-scheduled-finally-for-2020 https://theblog.adobe.com/adobe-flash-update/ https://www.blog.google/products/chrome/saying-goodbye-flash-chrome/ https://blogs.windows.com/msedgedev/2017/07/25/flash-on-windows-timeline/#oSoUy0Wbu5Gtaipg.97 > The intern did not install this rpm because doing so outside > of yum did not seem like a good idea. We also do not really > know how the Adobe Flash utility is called up by Firefox and > whether or not the installation would solve the problem or > possibly cause other problems. > > This problem is not happening on our Windows 7 machines, but > not everyone here has a Microsoft machine to use. On Windows, > the Firefox occasionally updates itself when launched so that > might explain the difference. The training videos always do > play on Windows 7 systems when the web pages are brought up. > > We also noticed that on Windows 7 there are no Firefox > related processes remaining after closing all Firefox browsers. > This is not the case on our CentOS 6 systems as indicated in > the output below. > > Is this video viewing issue a common problem, and if it is, > can someone provide some direction to correct it. > > Thanks. > > ++ > [user@computer ~]$ ps -elf | grep firefox > > 0 S user 3872 1 0 80 0 - 68607 poll_s Nov08 ? > 00:00:00 /usr/lib64/firefox/bundled/libexec/at-spi-bus-launcher > > 0 S user 8178 8149 0 80 0 - 25832 pipe_w 19:42 pts/2 > 00:00:00 grep firefox > > [user@computer ~]$ > > > > ___ > CentOS mailing list > CentOS@centos.org > https://lists.centos.org/mailman/listinfo/centos -- Stephen J Smoogen. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] error creating output file /var/lib/logrotate/logrotate.status.tmp: File exists
Hi all, I have configured a specific logrotate task to rotate certain logs every hour and everytime this logrotate's task runs, I am receiving an email like this: Auto-Submitted: auto-generated Precedence: bulk X-Cron-Env: X-Cron-Env: X-Cron-Env: X-Cron-Env: X-Cron-Env: X-Cron-Env: X-Cron-Env: X-Cron-Env: X-Cron-Env: Date: Tue, 13 Nov 2018 11:00:04 + (UTC) Status: R error: error creating output file /var/lib/logrotate/logrotate.status.tmp: File exists In Redhat's bugzilla I have seen some reported bugs with the same behavior and apparently is solved with an update. But this CentOS 7 host is fully patched and error persists ... Any idea? Regards, C. L. Martinez ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS Dojo @ FOSDEM
We're delighted to announce the schedule, and registration, for the upcoming CentOS Dojo in Brussels, on February 1, 2019, the day before FOSDEM starts. Details are here: https://wiki.centos.org/Events/Dojo/Brussels2019 The schedule is still marked "Tentative" since I have not received confirmation from all of the speakers yet, but we're almost there. Registration is FREE, but we do ask that you register anyways, since it helps us with venue planning and catering. See you in Brussels! -- Rich Bowen - rbo...@redhat.com http://centos.org/ - @CentOSProject 859 351 9166 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] Update to libstdc+++ causes problems.
Hi. New to this list. If this has been answered/resolved already, please point me to the solution. In a very recent update to CentOS 7 libstdc++ has been altered in a way that has removed CXXABI_1.3.8 and GLIBCXX_3.4.20. I've noticed that this has broken a number of executables linked on other systems that used to run on CentOS 7. Is there any fix for this short of backing off the update? Ubuntu seems to still allow these broken images to run. But I want the solid reliability CentOS has. If somebody can give me examples of Ubuntu up and running actual programs for a year plus then I'll gladly switch. I've never heard of Ubuntu dong that. I have had CentOS do that for me. Thank you. -- Chris Johnson rchristopherjohn...@gmail.com Ex SysAdmin, now, writer /War does not determine who is right – only who is left./ (Bertand Russell) ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Update to libstdc+++ causes problems.
On Tue, Nov 13, 2018 at 12:10:22PM -0500, Chris Johnson wrote: > In a very recent update to CentOS 7 libstdc++ has been altered in a way that > has removed CXXABI_1.3.8 and GLIBCXX_3.4.20. I've noticed that this has > broken a number of executables linked on other systems that used to run on > CentOS 7. Is there any fix for this short of backing off the update? I don't see any evidence that the libstdc++ in CentOS 7 ever had version definitions for CXXABI_1.3.8 or GLIBCXX_3.4.20. Both seem to only go up to CXXABI_1.3.7 and GLIBCXX_3.4.19, at least with the libstdc++ package. Perhaps you built your binaries on a system with newer version definitions? -- Jonathan Billings ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Update to libstdc+++ causes problems.
On 11/13/2018 12:50 PM, Jonathan Billings wrote: On Tue, Nov 13, 2018 at 12:10:22PM -0500, Chris Johnson wrote: In a very recent update to CentOS 7 libstdc++ has been altered in a way that has removed CXXABI_1.3.8 and GLIBCXX_3.4.20. I've noticed that this has broken a number of executables linked on other systems that used to run on CentOS 7. Is there any fix for this short of backing off the update? I don't see any evidence that the libstdc++ in CentOS 7 ever had version definitions for CXXABI_1.3.8 or GLIBCXX_3.4.20. Both seem to only go up to CXXABI_1.3.7 and GLIBCXX_3.4.19, at least with the libstdc++ package. Perhaps you built your binaries on a system with newer version definitions? I believe most of the images were originally built for Ubuntu. -- Chris Johnson rchristopherjohn...@gmail.com Ex SysAdmin, now, writer/I believe in God, only I spell it Nature. /(Frank Lloyd Wright) ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] merging signatures to a pdf file
On Sun, 11 Nov 2018 20:48:21 -0600 Gregory P. Ennis wrote: > I have the need to add a signature to the pdf form. Do > any of you know of a way to make this happen? If you mean the image of an actual signature rather than some sort of digital signing algorithm, then imagemagick might do what you want. You can overlay an image onto another image (i.e. the page), then use the convert command to create the pdf. - Frank, Thanks for you suggestion! I have never really used ImageMagick, but I took a look at it after your note. It has some merit. I also experimented a little with pdftk, and was able to develop a way to overlay a signature as a watermark with it. The only drawback so far is that pdftk seems to require a merge of a whole page, and the only way to place the signature at the proper place is to place it on a blank pdf page and then create the watermark. Seems to be a bit of kludge to me, but I think this will work for what I need to do. Greg ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Update to libstdc+++ causes problems.
On 11/13/18 11:50 AM, Chris Johnson wrote: I believe most of the images were originally built for Ubuntu. Sounds like that you are trying to run some binaries that were built for Ubuntu, and the Ubuntu version they used has a higher ABI version than those in CentOS 7. If these were software (proprietary or FLOSS) that were designed for Ubuntu but not CentOS, you'd likely meet some other problems even when the ABIs match. Ubuntu and CentOS have many differences. For simplicity I'd choose to stay with Ubuntu. Ubuntu also has Long Term Support (LTS) versions that are supported for five years: https://www.ubuntu.com/about/release-cycle -- Yan Li ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
