On Apache you can ProxyPass everything except one or more subdirectories (with "!").
ProxyPass /subdir !
ProxyPass / http://localhost:9999/
What is the Nginx equivalent ?
My first guess is obviously not working :
location /subdir {
root /var/www/site/subdir;
}
location / {
proxy_pass http://localhost:9999/ ;
}
On Ubuntu 10.04, I need to start my service with upstart, but only when mysql is up and running.
The problem is that mysql itself is not handled by upstart, so I can't use the "start on" feature.
What can I do ?
I'm using quite a big nagios configuration (about 4000 services), without any dependencies. This results in a huge mess of notifications when something goes wrong.
I try to look for best practices with Nagios Dependencies, but all I find on the web is basic understanding with a single example. What I need is deeper information, best practices on how to manage such a config file.
Example : On a cluster of 100 servers with apache listening on each, I'm monitoring the number of apache processes and the listening tcp port 80. I want to make one depend on the other, but dependent_hostgroup_name won't do the trick as it results in all "check process" services being dependent on each "check_http" services.
Questions are : How do you manage your dependencies ? Do you use scripts to generate them ?
I need to automatically install a package with its config file already present on the server.
I'm looking for something like:
apt-get install --yes --force-yes --keep-current-confs mysql-server
Probably a dumb question but I can't find such an option.
We are using an internal debian repository for backports and internal software.
We chose reprepro to manage the repository, and we sign source packages (with debsign) so that the repository accepts our gpg keys as trusted.
We created an internal keyring similar to the debian or ubuntu keyring package, that we install before anything to be able to run "apt-get update" without getting any gpg key error.
The latest point is problematic, as we often get security related issues, although we are in a completely private network, which excludes unsafe package uploading from outside.
Question : What are the pros and cons of using signed packages in an internal repository ?
I have a server racked and its redundant power supplies plugged in two APC Smart-UPS 3000 XLM. Each UPS is connected to two different mains power sources.
Two instances of apcupsd are running, each one connected to its own UPS. They can both detect when an UPS is on Battery, and each UPS can then trigger a shutdown on the server.
Question is : How NOT to shutdown if ONLY ONE UPS runs out of battery ?
Note : Smart-UPS 3000 XLM has a "Power Sync" Function that is able to connect to its peer and detect its status. But when I pulled the plug out of one of them, the Shutdown order was sent anyway. I'm thinking about modifying the shutdown scripts to check with "apcaccess" if the other ups is down. Any experience on this would be appreciated !
I would like to enable the PUT and DELETE methods to any .php script on my Apache web server.
Currently I only have this answer :
The requested method PUT is not allowed for the URL /something.php
I'm running Apache2 / PHP5 on a Debian lenny.
How do you use the "screen" tool ?
I'm looking for best practices and config tips :
I'm currently using screen only to run commands and be able to "detach" the terminal and logout. What do you use it for ? What are the other use cases ?
I have two Debian Packages that were previously made on our internal repository. They both share the same source code but are compiled with a distinct option, creating two separate binaries with the same libs. They were ment to be installed in separate servers
Therefore these two packages can't be installed at the same time because they try to install the same libs, hence the dpkg error "trying to overwrite /my/lib".
The problem : I need to install them on the same server.
Question is : What modification should I add to make them compatible ?
A few leads :
Create a 3rd package from the same source, compiling the whole source instead of two separate ones (but I guess this is the dirty way)
Find an option to tell these two packages can go along each other (but I don't know if it exists)
Create a "package-common" package containing the libs, man pages etc. from which the other 2 packages would depend on. (but I have no clue about how to compile the upstream source that way)
I understand this question is quite complicated to explain especially in a bad english, but I hope you will give me a few leads :)
Thanks community !
Now the question: when I'm running mass aptitude upgrades, aptitude doesn't respect what apt-get marked on hold. This can have very bad consequences, as aptitude would upgrade packages that were not supposed to be upgraded.
What should I do ?
What do you think are the best practices to maintain dozens (if not hundreds) of debian servers up-to-date ? Keeping in mind that :
Currently, when I finally finish all the upgrades, a new security update is posted, and I have to do it all over again.
Thanks in advance serverfault community !
I have a source package where I want to add a simple init.d script. I know dh_installinit should help : when I run it, it creates examples of postrm, prerm, postinstall to perform an update-rc.d after install (which is OK to me by the way) But I can't make my new created package to copy the file to /etc/init.d when I do apt-get install !
Thank you in advance serverfault community !
Is there any way to intercept Apache (1 or 2) access logs to stdout without :
Currently my apache config file specifies "CustomLog /dev/null common" System is Debian Etch.
Thanks in advance serverfault community !
EDIT : The idea would be to do what "strace -p" does with processes. I hoped apache2ctl or something would have a "dump current accesses" feature :D
Using two Debian servers, I need to setup a strong failover environment for cron jobs that can be only called on one server at a time.
Moving a file in /etc/cron.d should do the trick, but is there a simple HA solution to operate such action ? And if possible not with heartbeat ;)