The default limit is to allow 5 restarts in a 10sec period. If a service goes over that threshold due to the Restart= config option in the service definition, it will not attempt to restart any further. The rates are configured with the StartLimitIntervalSec= and StartLimitBurst= options and the Restart= option controls when SystemD tries … Read more
The Apache ProxyPassRewrite does not rewrite the response bodies received from http://test.example.com, only headers (like redirects to a 404 page and such). A number of alternatives: One) Rewrite the internal app to use relative paths instead of absolute. i.e. ../css/style.css instead of /css/style.css Two) Redeploy the internal app in a the same subdirectory /folder rather … Read more
Even if you don’t use a Nagios monitoring server, you can grep the check_dhcp binary or compile it from source and use the check to test a DHCP-Server. E.g. ./check_dhcp -v -s <dhcp_server_address> -r <expected_ip_address> -m <mac_address_touse>
The pvdisplay command has a -m option to show the mapping of physical extents to logical volumes and logical extents. I have set up the following situation on a test machine: 3 disks of 1GB each added to the system and used as physical volumes for vg_test 6 logical volumes made with various sizes (ranging … Read more
Best Practice #1 One of the best practices is to let the PHP process to run under a different user (in your case: jdoe, jsmith, etc) than the web server user (in your case: httpd) and let only these users have the write permission. Of course, your web server may still need read permission for … Read more
I currently work in an environment that has used Linux for more than a decade. Everybody in the office uses different distros on their desktops as well as the servers. As such, the choices of distribution tend to revolve around a number of things in no particular order: History – Obviously systems like RedHat and … Read more
What is debian-sys-maint used for? One major thing it is used for is telling the server to roll the logs. It needs at least the reload and shutdown privilege. See the file /etc/logrotate.d/mysql-server It is used by the /etc/init.d/mysql script to get the status of the server. It is used to gracefully shutdown/reload the server. … Read more
You can store symlinks as symlinks (as opposed to a copy of the file/directory they point to) using the –symlinks parameter of the standard zip. Assuming foo is a directory containing symlinks: zip –symlinks -r foo.zip foo/ Rar equivalent: rar a -ol foo.rar foo/ tar stores them as is by default. tar czpvf foo.tgz foo/ … Read more
Personally, my favorite (requires bash and other things that are standard on most Linux distributions) The details can depend a lot on what the two things output and how you want to merge them … Contents of command1 and command2 after each other in the output: cat <(command1) <(command2) > outputfile Or if both commands … Read more
You are right. It’s annoying behavior. $ zcat foo.txt.gz zcat: can’t stat: foo.txt.gz (foo.txt.gz.Z): No such file or directory Try this: $ zcat < foo.txt.gz asdfadsf