Ability to see the hostname

[LoZio]

In a multi-server configuration it should be useful to see the server name

Expected Behavior

Have a config variable to enable this at two levels:
APP_SHOW_SERVER_NAME = 1
Show the server name in the top bar of the app
The same set to 2 can display the server name ALSO as a comment inside the html of the login page
Set to 0: non server name (same as today)

Current Behavior

Cannot know which server I'm going to

Possible Solution

Steps to Reproduce (for bugs)

Context

Your Environment

• Version or latest commit hash (git rev-parse HEAD):
• Environment name and version (e.g. Chrome 39, PHP 7.0, etc):
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[sndrr]

How is your setup? One database with multiple frontend webservers (HA-setup)?

[LoZio]

Confirm

[LoZio]

AWS ELB in front to a pool of servers. Session stickyness to be able to configure the application. This is sub-optimal for load distribution but required since sessions are not kept in the DB so switching from one server to another breaks things. Would be useful to put the session in the DB/Redis to avoid using sticky connections. Not a real problem when you have a lot of clients clicking since they are evenly spread in any case.

[overint]

@LoZio

You can set the session driver to redis in the .env file, line 106,

...
CACHE_DRIVER=file
SESSION_DRIVER=redis
QUEUE_DRIVER=database
...

[overint]

Would showing the server name on /about-polr be an adequate solution? I don't think we need to be showing it in the nav.

[LoZio]

Yes of course, but having it handy (even in some fine print format) whould be better.
Looking at my use-case also adding a specific X-HEADER in the redirect reply would be useful.

[LoZio]

@overint Where do I find doc about configuring redis settings?

[overint]

https://lumen.laravel.com/docs/5.1/session

[LoZio]

Ok, this shows me how to code using laravel and redis. My question was: is there some PolR documentation about how to setup redis sessions? You mentioned to change a line adding
SESSION_DRIVER=redis
but where do I find PolR docs about where to set the server name, port, cluster (if any), db number, user and password and so on?
Or where you suggesting: this is how to add the support to PolR go code it yourself?

[overint]

You will need to add the redis vars to your .env, as below:

REDIS_HOST=127.0.0.1
REDIS_PASSWORD=null
REDIS_PORT=6379

[LoZio]

Sorry for the late reply, had time to test only today.
Just adding SESSION_DRIVER=redis (and filling all the redis variables) results in "Whoops, looks like something went wrong.".
Redis is online (on another host) and working.
Where do I find some log to further investigate? Apache error log contains no info, access log says it was a 500.

[LoZio]

Also tried to create a config/database.php file from some online examples with no luck.

[overint]

You will likely need to check your error.log not your access.log

[LoZio]

I wrote it above, nothing in the error.log.

[overint]

I meant to say the laravel.log in /storage/logs (in your polr folder)

[LoZio]

No such file, but found lumen.log that says
[2018-05-04 08:27:43] lumen.ERROR: Symfony\Component\Debug\Exception\FatalThrowableError: Fatal error: Class 'Illuminate\Redis\RedisServiceProvider' not found in /mnt/web/polr/vendor/laravel/lumen-framework/src/Application.php:268