Unused backend somebackend, defined:
Is solved with
In CentOS / RHEL you can add that to
You’d also have to pass that option if you’re testing your vcl config
varnishd -p vcc_err_unref=off -C -f /etc/varnish/default.vcl
You can dump stuff from memcached with memcdump
$ memcdump --servers=127.0.0.1
Protect yourself from drown attack by updating your openssl package.
Redhat patched openssl 1.0.1e
# rpm -q --changelog openssl-1.0.1e-51.el7_2.4.x86_64 | head
* Wed Feb 24 2016 Tomáš Mráz <firstname.lastname@example.org> 1.0.1e-51.4
- fix CVE-2016-0702 - side channel attack on modular exponentiation
- fix CVE-2016-0705 - double-free in DSA private key parsing
- fix CVE-2016-0797 - heap corruption in BN_hex2bn and BN_dec2bn
* Tue Feb 16 2016 Tomáš Mráz <email@example.com> 1.0.1e-51.3
- fix CVE-2015-3197 - SSLv2 ciphersuite enforcement
- disable SSLv2 in the generic TLS method
goto https://drownattack.com/ for more info
I lost password for my owncloud admin account .
In owncloud 7 / 8 you have an occ command you can use to fix that ( requires root access to the server ) .
sudo -u apache php /path/to/webroot/owncloud/occ user:resetpassword [you admin username]
Thank you 2daygeek.com
Cluster ssh is super nice, but out of the box it got ugly and small fonts.
Here’s my Cluster ssh config, which I respectfully ripped from the net:
terminal_args=-fa 'DejaVu Sans Mono:style=Book' -fs 11
# note these are not consistent with the TTF font selection, so have to 'adjust' accordingly
# for terminal_args=-fa 'DejaVu Sans Mono:style=Book' -fs 12:
# for terminal_args=-fa 'DejaVu Sans Mono:style=Book' -fs 11
Thank you dansnotebook.blogspot.no
# firewall-cmd --get-active-zones
What’s active in this zone ?
# firewall-cmd --zone=public --list-all
public (default, active)
services: dhcpv6-client http https ssh
You’ll probably find numerous links that tell you to delete
in puppetmaster, node or both.
None of those solved my problem.
Upgradeing to puppet-2.7.25 didn’t help either .
On my puppet client, in /var/lib/puppet deleting
rm -fr state/ lib/ facts/ client*
at least let me run puppet again, but next run gives that 400 error again …
note to self: get back to this post when I get time to further debugging this really annoying issue
As I was debugging an issue at work related to http headers being forwarded by haproxy I used a couple tcpdump commands that was great, storing here for future reference .
tcpdump -s 1024 -l -A | grep X-Forwarded-For
tcpdump -s 1024 -l -A src 192.168.9.56 or dst 192.168.9.56
First one will print lines containing X-Forwarded-For, second one let you filter on src and/or destination .
Note that tcpdump by default does not include 127.0.0.1 or ::1 ( lo ) .
I’m running CentOS 7 on my workstation these days, like it a lot.
At work our dhcp setup dns search for the domain containing our windows hosts but the Unix and Linux hosts I work with are in an other domain.
In the network manager gui in gnome3 I can’t seem to figure out where to add this second search domain, so I’ve been adding it manually to resolv.conf after each boot …
Got tired of that so i added:
in /etc/sysconfig/network-scripts/ifcfg-eno1 and did a
systemctl restart network.service
UPDATE 30th october 2015:
This does not work at all at my workstation at my new job.
I’m not using NetworkManager any more, not sure if that’s the reason though.
By setting SEARCH in /etc/sysconfig/network instead things got a lot better:
A really cool, and handy, feature of rpm is the ability to view the changelog for a package you’ve installed, or recently updated:
$ rpm -q --changelog gnome-shell | less
* Wed Apr 16 2014 Florian Müllner <firstname.lastname@example.org> - 3.8.4-32
- Improve vertical monitor layouts
* Wed Mar 19 2014 Florian Müllner <email@example.com> - 3.8.4-31
- Fix some more background memory leaks
* Wed Mar 12 2014 Ray Strode <firstname.lastname@example.org> 3.8.4-30
- Fix automatic shield lifting when smartcard is inserted
* Mon Mar 10 2014 Ray Strode <email@example.com> 3.8.4-29
- Don't show user list if require smartcard is true