I have one salt-master server and ~40 Zabbix proxy servers with salt-minions.
I want to manage configuration files of Zabbix proxy servers. Zabbix conf files are the same except Hostname, Timeout settings and PSK Identity.
Do I need different sls files for all 40 hosts? Or there is some tricks how to manage environment like this?
TIA!
You could use:
1 sls file which containing the states to manage configuration files ;
configuration files including Jinja labels, e.g. {{ Hostname }} ;
minion / zabbix-proxy settings in per-minion pillars or grains.
But several formulas already exist, like zabbix-formula, and they might fit your needs.
Best regards,
Related
I've struggled for couple of weeks on this configuration.What I want to achieve can be listed as follows.
1.I registered a domain not long ago.And I've set up some web service on my VPS,such as a blog,a forum and Owncloud. Now I want to configured the Nginx so that I can run all the service on one VPS and one IP address. In order to run owncloud,I have to modify the /etc/php5/fpm/pool.d/www.confto listen = 9000.In this case,I can only get one service (Owncloud)function,because if I want to run the forum I must uncomment the listen = /var/run/php5-fpm.sock.What's more,I've tried to uncomment both of them,Nginx showed 502 afterwards.
2.I'm using Hexo as my blog.When I start the server,I can access into my blog on IP:4000.So I wonder if I could run my blog server on background and edit the posts online via a subdomain which has been redirected to port 4000.If it's possible,should I modify the nginx.conf or add something in sites-available?
3.Can I deploy different web services on different subdomain?Which file is to modify?It's said that I can achieve this by using reverse proxy?
Sorry for the pathetic English and expression.Thanks in advance.
Going at it point by point:
The advantage of PHP-FPM, which you are using, is that you can have multiple separate interpreters running in your pool. To do so, simply copy the file at /etc/php5/fpm/pool.d/www.conf to somewhere else, say /etc/php5/fpm/pool.d/forum.conf, change the listen directive, and you've got a second php interpreter running, entirely separate from the first one. That way owncloud (www) and your forum (forum) have their own distinct php.
This is called reverse-proxying. nginx does that well. You simply add a new site definition in sites-available that does reverse-proxying to port 4000 on your server, then symlink (or copy) that site definition to sites-enabled and restart nginx. You will have to setup Hexo to start automatically for that to work.
You can deploy different web services on different subdomains. As long as the dns is configured to point that name to your server, you can configure the server to respond differently for every subdomain using site definitions. You need to modify the files in sites-enabled to determine which names nginx knows how to respond to.
This might be a very silly question but I'll still ask it.
Nginx reads nginx.conf file & keeps information in memory/cache until you do a 'nginx -s reload'.
Is there a way were I can modify nginx configuration directly in memory as I need to do reload multiple times per minute and config file can be huge.
Basically the problem I'm trying to solve is that I have multiple docker containers coming up & down dynamically on a set of host machines. Every time a container comes up, it'll have a different IP & port open (application design constraint). And I'm thinking of using Nginx as reverse proxy. What should I do to solve this problem considering the fact that final product might have 3000 - 5000 containers running on a cluster of hosts. The rate at which containers are launched/destroyed might be around 100 per second.I need a fast way to make sure routing is happening properly
hmmm, probably not, nginx loads its config in multiple workers, so this does not look like a good idea to try to change it on the fly.
What it your goal ? You seem to need to do some dynamic routing or other sort of treatment. You should instead look at:
nginx directives and modules such as eval
Lua scripting
nginx module dev (in C/C++)
This would allow you to do more or less whatever you want, you can read some config in a db like redis, and change the behavior of your code according to the value in Redis.
For example, you could do a lot just by reading a value in Redis, and then use if directive in your nginx config file. You can use How can I get the value from Redis and put it in a variable in NGiNX? to get redis value in nginx with eval module.
UPDATE :
For dynamic IP in nginx, you should look at Dynamic proxy_pass to $var with nginx 1.0.
So I would suggest that you :
have a process that write in redis the IP address of your dockers
read it with eval and redis module in nginx
use the value to proxy
Is there any way I can configure ngnix other than through the normal ngnix.conf file ?
Like xml configuration or memcache or any other ways..?
My objective is to add/remove upstreams to the configuration dynamically. Ngnix doesnt seem to have a direct solution for this so I was planning to play with the configuration file, but I am finding it very difficult and error prone to modify the file through script/programs.
Any suggestions ?
No. You can't. The only way to "dynamically" reconfigure nginx is to process the config files in external software and then reload the server. Neither you can "program" config like in Apache. The nginx config is mostly a static thing which is praised for its performance.
Source: I needed it too, done some research.
Edit: I have a "supervising" tool installed on my hosts that monitors load and clusters and such. I've ended up implementing the upstreams scaling through it. Whenever a new upstream is ready, it notifies my "supervisor" on all web servers. The "supervisors" then query for served "virtual hosts" on the new upstream and add all of them to their context on the nginx host. then it just nginx -t && nginx -s reload everything. This is for nginx fastcgiing to php-fpms.
Edit2: I have many server blocks for different server_names (sites), each has an upstream associated to it on another host(s). In the server block I have include /path/to/where/my/upstream/configs/are/us-<unique_site_id>.conf line. the us-<unique_site_id>.conf is generated when the server block is created and populated with existing upstream(s) information. When there are changes in the upstreams pool or the site configuration, the file is rewritten to reflect it.
I need to set a different timeout and execution time for a third party server that needs to import the products and prices on my database.
Right now, they are telling me the php script is timing out. This is due to my configuration on php.ini. I'd like to be able to keep that configuration for everyone as I think that's the right configuration. But I also need them to be able to execute the script.
I guess there must be a way to do this either on nginx or php-fpm configurations. Anyone knows how?
you need to create a NEW php-fpm config file for the specific 3rd party server and overwrite the php.ini setting, i.e.,
php_admin_value[max_execution_time] = 60
php_admin_value[memory_limit] = 128M
Then in nginx, set up a new location block with fastcgi pointing to the same port (or unix socket) your new php-fpm config file is listening to.
On my nginx server, I am going to use more than one of the geo ip databases (one for country+city and another one for isp or organization). I could not find a module for nginx and/or pecl to get more than one of these databases to run.
The database provider is not going to publish a single DB with all the data in one file), so it looks like i am lost.
http://wiki.processmaker.com/index.php/Nginx_and_PHP-FPM_Installation seems to work with one DB only.
It's possible with the standard built-in GeoIP nginx module:
http://nginx.org/en/docs/http/ngx_http_geoip_module.html
geoip_country CountryCity.dat;
geoip_city CountryCity.dat;
geoip_org Organization.dat;