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34753 discussions

samba CTDB inability to create smb.conf cache
by lejeczek 09 Nov '16

09 Nov '16

hi everyone any experience with ctdb? I'm setting up a simple cluster, only ldap backend instead of tdb2. One (of the two) server fails this way: 50.samba: ERROR: smb.conf cache create failed $ ctdb status Number of nodes:2 pnn:0 10.5.6.32 OK pnn:1 10.5.6.49 UNHEALTHY (THIS NODE) Generation:323266562 Size:2 hash:0 lmaster:0 hash:1 lmaster:1 Recovery mode:NORMAL (0) Recovery master:0 If I copy the file manually while ctdb is running I see: 50.samba: WARNING: smb.conf cache update failed - using old cache file Node became HEALTHY. Ask recovery master 0 to perform ip reallocation and: $ ctdb status Number of nodes:2 pnn:0 10.5.6.32 OK pnn:1 10.5.6.49 OK (THIS NODE) but only so far as next stop/restart. What the heck? Why is that one box unable to create that cache file? Would you care to make some sense out of it for me please? thx L.

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How to start a script to complete configuration
by Bernard Fay 09 Nov '16

09 Nov '16

Hi, We have a virtual environment based on XenServer. In this environment I defined a template for CentOS 7 servers. I would like to start a script a boot time to complete the configuration of new VMs based on this template. How can I have a script started before any login prompt to ask question to the user to complete the configuration such as hostname, IP address, etc? Thanks, Bernard

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Re: [CentOS] CentOS 6.3 packages updates options without upgrading.
by Dipal Bhatt 08 Nov '16

08 Nov '16

Hi, Thanks for your responses. Unfortunately, there's not possibility in this specific situation to be able to update from 6.3 -> 6.8. But, it would be nice to be able to update specific packages to latest that's available in 6.8 repo at http://mirror.centos.org/centos/6/os/x86_64/Packages/ For example, nss-util-3.21.0-2.el6.i686.rpm <http://mirror.centos.org/centos/6/os/x86_64/Packages/nss-util-3.21.0-2.el6.…> 2016-05-12 10:48 67K nss-util-3.21.0-2.el6.x86_64.rpm <http://mirror.centos.org/centos/6/os/x86_64/Packages/nss-util-3.21.0-2.el6.…> 2016-05-12 10:47 67K nss-util-devel-3.21.0-2.el6.i686.rpm <http://mirror.centos.org/centos/6/os/x86_64/Packages/nss-util-devel-3.21.0-…> 2016-05-12 10:48 69K nss-util-devel-3.21.0-2.el6.x86_64.rpm <http://mirror.centos.org/centos/6/os/x86_64/Packages/nss-util-devel-3.21.0-…> 2016-05-12 10:48 69K Simply updating these packages on 6.3, would there be any issues w/o updating rest of the packages from 6.3 to 6.8? As I mentioned, 'yum update' or updating to latest 6.8 packages from 6.3 is not currently plausible or even feasible for some reason. Or, please suggest any other options to be able to update such packages w/o updating rest of the userland on 6.3? Thank again very much.

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CentOS 6.3 packages updates options without upgrading.
by Dipal Bhatt 08 Nov '16

08 Nov '16

Hi, IT seems, centos6.3 does no longer get any updates esp security fixes as per readme here: http://mirror.centos.org/centos/6.3/readme Is there updated source RPMs that can be rebuilt and hand patched, for example, nss-util 3.21.0-2 or openssl 1.0.1e that can be safely used on CentOS 6.3? Any other options that you can shed some light on, highly appreciated for above examples. My apologies if this is not the right group to post such questions or if any existing literature available for same, please kindly refer to right place. The other option is to use CentOS 6.8 updated package on 6.3, but I am not sure of any upstream and downstream dependencies in 6.3 without updating the rest of the userland from 6.3 to 6.8. Nonetheless, would this option be feasible? Appreciated very much, Thank you.

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Proxy server settings
by paul.greene.va 07 Nov '16

07 Nov '16

Hello All, I'm sure this must be a fairly quick and easy configuration, but I have not been able to figure it out yet. How do you configure the proxy settings in the OS itself (not in a browser or other application) so that anytime the server tries to get out to the internet, that it can direct its traffic to go through a proxy server? I tried putting the proxy settings in .bash_profile per a tech article I found online but that did not work. The OS is Redhat 7.2. Thanks, Paul Greene

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FireFox and Plugins
by Alice Wonder 06 Nov '16

06 Nov '16

While doing a browser fingerprinting survey, I was quite surprised to see I actually have a FireFox plugin installed. The culprit is /usr/lib64/mozilla/plugins/librhythmbox-itms-detection-plugin.so It appears that whoever maintains the rhythmbox RPM has chosen not to package the browser plugin separately like it probably should be. So if I have the rhythmbox RPM installed, I have the plugin. This is rather worrisome because I can find no trace of the plugin in the Mozilla preferences panel, so if it is there it is very well hidden and if it really isn't there, it can't be disabled there. Is there some kind of blacklist file I can put in /usr/lib64/mozilla/plugins/ or ~/.mozilla/plugins/ to specifically tell FireFox not to load that plugin, or do I have to uninstall rhythmbox? Thank you for suggestions. PS does anyone actually have a real world use for an itms detection plugin?

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RHEL 7.3 released
by James Hogarth 06 Nov '16

06 Nov '16

As a heads up RHEL 7.3 is released: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/ht… Pay careful attention when the CR repo starts churning out RPMs (if you have CR enabled) as there have been a few rebases in this - notably firewalld, NetworkManager, freeIPA, libreoffice, samba, amongst others If you have an ipv6 environment ping is now ipv6 aware and ping6 is removed (with a symlink to ping for compatibility). On the SSL side of things pycurl now handles TLS 1.1 and 1.2 and openJDK8 can handle ECC. With the NetworkManager rebase more complicated arbitrary layering of interfaces is possible (eg physical -> team -> vlan -> bridge), which I'll be revisiting my old NM article to investigate soon, and Wi-Fi scanning will use a randomised MAC ... this may affect some people. For a known BSSID the connect won't be a randomised MAC though just when scanning. The firewalld zones become a bit more usable with ipsets being usable to define the zone making management of which networks go in which zones a bit nicer - I'll be revisiting my old firewalld article to investigate this too. The deprecation of the old net-tools suite continues with bridge-utils no longer required in many circumstances as iproute2 gets improved bridge capabilties... this brings EL7 inline with the Fedora behaviour: https://fedoramagazine.org/build-network-bridge-fedora/ On the network side of things be aware of a potentially breaking change to systems in how device names are created, this will only affect systems that have exceptionally long device names: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/ht… For fresh installs using automatic partitioning the default /boot size has been bumped to 1G ... for kickstarts and other automated installs you may want to tweak your setups to match. The NSS bug that caused problems with reusing SSL sessions and was breaking owncloud setups has been resolved - I have not tested this yet and will be doing so this weekend. The impending owncloud 9.1.1 EL7 release in EPEL7 will be removing my workaround and require this for full correct functionality. In the tech preview world nftables joins the testing group (I'll have articles up exploring this new firewalling method in the coming weeks) for networking. Whilst with storage overlayfs and btrfs remain in tech preview status - with cephfs joining them... as notable pieces. There's also new pNFS stuff. This is only a small snippet of things that jumped out relevant to me personally. As always make sure you read through the release notes in full. to be ready once CentOS starts producing the RPMs, and keep in mind this early in the lifecycle there are a fair few rebases and new features implemented that should be tested... unlike later on in the lifecycles (eg EL6) where no/minimal rebasing happens and changes at a feature level don't happen.

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anaconda pgp rpm verification
by Leon Fauster 04 Nov '16

04 Nov '16

Does anaconda verifies gpg signatures to ensure the integrity of the packages? Are the keys already imported or how does anaconda do this job? Any suggestions to improve the integrity while kickstarting a system? Do you use repo_gpgcheck? -- Thanks, LF

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Keyboard layout on remote, local, ... CentOS 6; strange behaviour
by Walter H. 04 Nov '16

04 Nov '16

Hello, I did the following: in /boot/grub/menu.lst I added/replaced KEYTABLE=us-acentos in /etc/sysconfig/keyboard I have this: KEYTABLE="us-acentos" MODEL="pc105" LAYOUT="us" KEYBOARDTYPE="pc" VARIANT="intl" my host system is Windows; and for connecting to Linux terminal I use PuTTY in Windows I have configured German keyboard layout; what would someone expect, when using PuTTY to connect to the above configured CentOS 6 I thought that there I have the US intl layout; but its German; when I switch the keyboard layout in Windows to US intl. and connect to a CentOS 6, where the following is configured in /boot/grub/menu.lst KEYTABLE=de-latin1-nodeadkeys and in /etc/sysconfig/keyboard this: KEYTABLE="de-latin1-nodeadkeys" MODEL="pc105" LAYOUT="de" KEYBOARDTYPE="pc" VARIANT="nodeadkeys" here I thought I have German keyboard layout, but it isn't; it's US in short: why do I have the keyboard layout, which is configured at the host running PuTTY and not which is configured in CentOS? when I log into the Linux directly at the console, I do have the configured keyboard layout; Thanks, Walter

1 0

dnf and failing epel
by lejeczek 04 Nov '16

04 Nov '16

hi everyone, I use dnf but one epel fails in a peculiar way: $ dnf repolist Failed to open: /var/cache/dnf/x86_64/7/x86_64/7/epel/repodata/8415cbb16f52517f34e3edac12a97c9893117f7b9de6cb22fc086048febd1c60-updateinfo.xml.bz2. that file is there, so I tampered with perms & fcontext but to no avail. dnf clean does remove it but on the first contact to epel repo it fails again. Do you see it with your centoses? ps. I wonder if my email get though to the group, I receive mailing list emails but I don't get my own emails? b.w. L

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