CURL on self not working - apache

I'm dealing with this server that can't seem to call CURL on itself.
To illustrate:
I have a localhost server (named http://experiments.local). When I go to terminal and do "curl http://experiments.local", that works.
Now I upload all the stuff to this server. (http://www.prod.com). When I ssh to that box and do "curl http://www.prod.com" that just hang.
Is there any setting that says no curl to self? If yes how do I turn that off?
Just to clarify:
calling "curl http://www.prod.com" from my local machine works too. So it's really only when I try doing curl from that same box.
The reason why I need that is because when a user hit the API living in www.prod.com, that API will call a 3rd party vendor that upon failure / success will hit a callback URL that we pass along to them.
Now since, I added this option to my curl call curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); the API call just stall. Works fine on my local machine version since my local machine doesn't have that curl hanging issue.
Thank you,
Tee

I had the same problem here, turns out the solution is quite simple
Open your /etc/hosts files and you will find these two lines (the 147.4.12.20 ip is just an example, yours will be different)
127.0.0.1 something
147.4.12.20 something
Just add your domain to that lines that point to your server, it will be like this:
127.0.0.1 something prod.com
147.4.12.20 something prod.com

Related

Apache2 Not Responding: Bitnami Magento Install (Legacy)

For reasons too insane to even go into, I am attempting to install using the Bitnami Magento 1.9.2.4 image on a fresh Amazon AWS/Lightsail Ubuntu 16.04 instance (2gbs to avoid complaints and be sure I don't run into anything unnecessary).
I think this is really more of an Apache question. After I finish the install (success), I can't get the server to respond via the instance IP address at the default port (8080).
Regarding the old Bitnami Image, you can get (or wget) that Magento 1.9.2.4 image still, it's over here:
wget "https://downloads.bitnami.com/files/stacks/magento/1.9.2.4-3/bitnami-magento-1.9.2.4-3-linux-x64-installer.run"
So for the sake of anyone who's trying to work through the whole process, once you pull the above down to your instance you need to chmod the above file to 755. This assumes you are in the directory with your download:
chmod 755 bitnami-magento-1.9.2.4-3-linux-x64-installer.run
Then run it using it's full path, like:
/home/ubuntu/bitnami-magento-1.9.2.4-3-linux-x64-installer.run
So the install is going to ask a bunch of questions, for anyone keeping track my answers were all yes (ie. yes to Git, PhpMyAdmin, Beetailer... whatever that is).
Then I created an admin user / password etc.
As far as the port I didn't have anything running on 8080 so the install defaulted the port to 8080 with HTTPS on 8443 with MySQL on 3306 (more on ports in a minute).
I think Host/Domain is one of the keys to this problem. When I couldn't get the server to respond I just recreated an instance and tried a different Domain during the install process. I tried: internal AWS IP, External ACTUAL IP, 127.0.0.1
Here's what the Magento 1.9 Domain prompt looks like:
So basically that sort of brings us up to date.
Once I finished the install, like a normal human used to using bitnami as a cloud image I assumed the server would respond at whatever the default path was at the IP address it was running on. Ie:
BASEIPADDRESS:8080/magento
Not the case. When I hit that the server does NOT respond, hence the question. In addition to the above I have also tried the BASEIPADDRESS, and the BASEIPADDRESS:8080
Results checking open ports
So since the server is not responding I figured I would check the ports.
First I checked using netstat:
netstat -lntu
I got back:
Then I realized that netstat is now depreciated... so I went with:
ss -lntu
I got back:
(excuse the images, formatting wouldn't work for text)
To me it looks like 8080 (default) is open in both of those results. So why isn't the server responding at the default location?
#Bitnami Status = OK
Checking the status with:
/home/ubuntu/magento-1.9.2.4-3/ctlscript.sh status
Everything looks good:
apache already running
mysql already running
Memcached not running
Since it says Memcached was not running, I started memcached to see if that was the issue, no it was not.
I can access the instance via SSH and yes I am sure the IP is right. See images above.
I also posted this to the Bitnami community but haven't heard anything over there. Will cross populate as I get ideas.
It looks to me that you configured Magento using the private IP address, so you would not be able to access from your browser. A way to check it is by executing the following command in your machine:
curl -L 127.0.0.1:8080/magento
If that provides output, then the IP is misconfigured, so you would need to reinstall using the proper IP
So this ended up being PRIMARILY due to not running the Bitnami stack installer as root / sudo:
sudo /home/ubuntu/bitnami-magento-1.9.2.4-3-linux-x64-installer.run
Why Install with Sudo on AWS/Lightsail?
So the reason you need to install as sudo has to do with the fact that when run as the normal user (ie. not root) the installer defaults to port 8080 which is NOT open on aws by default. To complicate matters further you may not be able to get things running properly even if you manually swap to port 80 AFTER you run the installer.
To avoid a scenario where port 80 requires root access to utilize I just re-created my instance and ran the installer as root with the above command.
Host Setting
During install I selected the public IP for the "Host" prompt and everything worked as I thought it might (straight out of the box).
Thanks to Javier Salermon who put me on the right track and the devs at Bitnami for cueing me into the fact that 8080 is not open by default.

Remotely create a vhost on a docker container running rabbitmq

I have a Vagrantfile that does 2 important things; firstly pulls and runs dockerfile/rabbitmq, then builds from a custom Dockerfile that runs an application which assumes a vhost on the rabbitmq server, let's say "/foo".
The problem is the vhost is not there.
The container with rabbitmq is running successfully, the app is linked to it using --link as the built image is run. Using the environment variables docker sets I can hit the server. But somewhere in the middle of these operations I need to create the vhost as my connection is refused, i assume because "/foo" is not there.
How can I get the vhost onto the rabbit server?
Thanks
note - using the webadmin is not an option, this has to be done programatically.
You can put default_vhost in /etc/rabbitmq/rabbitmq.config: http://www.rabbitmq.com/configure.html
It will then be created on the first run. (Stop and delete the mnesia directory if has been started already)
There are few ways to get desired configuration:
Export/import whole configuration with rabbitmqadmin - Management Plugin CLI tool.
or
Use HTTP API from management plugin
or
Use rabbitmqctl cli tool to manage access control.
BTW according to docs in here: https://www.rabbitmq.com/vhosts.html
You can du this via curl by using:
curl -u userename:pa$sw0rD -X PUT http://rabbitmq.local:15672/api/vhosts/vh1
So probably it doesnt matter you are doing this remotely or not..

Allowing a PHP script to ssh, using sudo

I need to allow a PHP script on my local web server, to SSH to another machine to perform a specified task on some files. My httpd runs as _www with low permissions, so setting up direct passwordless SSH is difficult, not to say ill-advised.
The way I do it now is to have a minimal PHP script that sudo-exec's (as me) a shell script which is outside of the document root. The shell script in turn calls (as me) the PHP code that does the actual SSH work, and prints its output. Here's the code.
read_remote_files.php (The script I call from my browser):
exec('sudo -u me -n /home/me/run_php.sh /path/to/my_prog.php', $results);
print $results;
/home/me/run_php.sh (Runs as me, calls whatever it's given):
php $1 2>&1
sudoers:
_www ALL = (me) NOPASSWD: /home/me/run_php.sh
This all works, as my_prog.php is called as me and can SSH as me. It seems it's not too insecure since run_php.sh can't be called directly from a browser (outside document root). The issue I'm having is that my_prog.php isn't called as an HTTP program so doesn't have access to the HTTP environment variables (DOCUMENT_ROOT etc).
Two questions:
Am I making this too complicated?
Is there an easy way for my final script to get the HTTP variables?
Thanks!
Andy
Many systems do stuff like this using a (privileged) cron job that frequently checks for the existence of a file, a database record or some other resource, and then performs actions if there are any.
The huge advantage of this is that there is no direct interaction between the PHP script and the privileged script at all. The PHP script leaves the instructions in a resource, the privileged script fetches it. As long as the instructions can't lead to the system getting compromised or damaged, it's definitely more secure than sudoing.
The disadvantage is that you can't push changes whenever you like; you have to wait until the cron job runs again. But maybe it's an option anyway?
"I need to allow a PHP script on my local web server, to SSH to another machine to perform a specified task on some files."
I think that you are phrasing this in terms of a solution that you have difficulty in getting to work rather than a requirement. Surely what you should be saying is "I want to invoke a task on machine B from a PHP script running under Apache on Machine A." And then research solutions to this -- to which there are many from a simple 'roll-your-own' RPC tunnelled over HTTP(S) to using an XMLRPC or SOA framework.
Two caveats:
Do a phpinfo(); on both machines to check what extensions are available and
Also check your php.ini setting to make sure that your service provider hasn't disabled any functions that you expect to use (or do a Q&D script to echo 'disable_functions = ' . ini_get('disable_functions') . "\n"; ...)
If you browse here and the wider internet you'll find many examples. Here is one that I use for a similar purpose.

Pushing my Mercurial Repository through HTTP with Apache and Windows

So I have managed it. I can clone mercurial-repositories remotely using HTTP to my Windows Server 2003 machine and the ipaddress from that machine. Although I did deactivate IIS6 and am using Apache 2.2.x now. But not all works right now...darn! Here's the thing:
Cloning goes smooth! But when I want to push my changes to the original repository I get the message "cannot lock static http-repository". On the internet I get to read several explanations that Mercurial wasn't designed to push over HTTP connections. Still, on the Mercurial website there's something about configuring an hgrc file.
There's also the possibilty to configure Apache to host via HTTPS (or SSL). For this you have to load the module enabling OpenSSL and generating keys.
Configuring the hgrc file
Just add "push_ssl = false" under the [web] line. But where to put this file when pushing your changes back?! Because I placed it in the root of the server, in the ".hg" directory, nothing works.
Using SSL/HTTPS with Apache
When I try to access 'https://myipaddress' it fails, displaying a dutch message which would mean something like "server taking too long to respond". Trying to push also gives me a dutch error message which means about the same. It can not connect to my server via https although I followed the steps exactly at this blog.
I don't care which of the above solutions will work for me. Turns out none of them work so far. So please, can anyone help me with one of the solutions above? Pick the easiest! Help will be greatly appreciated, not only from me.
Summary
-Windows Server 2003
-Apache 2.2 with OpenSSL
-Mercurial 1.8.2
-I can clone, but not push!
Thank you!
Maarten Baar(s)
It seems like you might have apache configured incorrectly for getting it to do what you want. Based on your question it sounds like you have a path (maybe the root of the server) pointing to the repository you want to serve.
Mercurial comes with a script for this exact purpose, in the latest version it is hgweb.cgi. There are reasonably good instructions for setting it up on the mercurial site. It should allow both cloning and pushing. You will need the push_ssl=false if you will not be configuring https and also an allow_push line which will let certain users, or all (*) push to the repository. But all that should be part of the setup docs.

CouchDB replication is not working properly behind a proxy

Note: Made some updates based on new information. Old ideas have been added as comments below.
Note: Made some updates (again) based on new information. Old ideas have been added as comments below (again).
We are running two instances of CouchDB on separate computers behind Apache reverse proxies. When attempting to replicate between the two instances:
curl -X POST http://user:pass#localhost/couchdb/_replicate -d '{ "source": "db1", "target": "http://user:pass#10.1.100.59/couchdb/db1" }' --header "Content-Type: application/json"
(we started using curl to debug the problem)
we receive an error similar to:
{"error":"case_clause","reason":"{error,\n {{bad_return_value,\n {invalid_json,\n <<\"<!DOCTYPE HTML PUBLIC \\\"-//IETF//DTD HTML 2.0//EN\\\">\\n<html><head>\\n<title>404 Not Found</title>\\n</head><body>\\n<h1>Not Found</h1>\\n<p>The requested URL /couchdb/db1/_local/01e935dcd2193b87af34c9b449ae2e20 was not found on this server.</p>\\n<hr>\\n<address>Apache/2.2.3 (Red Hat) Server at 10.1.100.59 Port 80</address>\\n</body></html>\\n\">>}},\n {child,undefined,\"01e935dcd2193b87af34c9b449ae2e20\",\n {gen_server,start_link,\n [couch_rep,\n [\"01e935dcd2193b87af34c9b449ae2e20\",\n {[{<<\"source\">>,<<\"db1\">>},\n {<<\"target\">>,\n <<\"http://user:pass#10.1.100.59/couchdb/db1\">>}]},\n {user_ctx,<<\"user\">>,\n [<<\"_admin\">>],\n <<\"{couch_httpd_auth, default_authentication_handler}\">>}],\n []]},\n temporary,1,worker,\n [couch_rep]}}}"}
So after further research it appears that apache returns this error without attempting to access CouchDB (according to the log files). To be clear when fed the following URL
/couchdb/db1/_local/01e935dcd2193b87af34c9b449ae2e20
Apache passes the request to CouchDB and returns CouchDB's 404 error. On the other hand when replication occurs the URL actually being passed is
/couchdb/db1/_local%2F01e935dcd2193b87af34c9b449ae2e20
which apache determines is a missing document and returns its own 404 error for without ever passing the request to CouchDB. This at least gives me some new leads but I could still use help if anyone has an answer offhand.
The source CouchDB (localhost) is telling you that the remote URL was invalid. Instead of a CouchDB response, the source is receiving the Apache httpd proxy's file-not-found response.
Unfortunately, you may have some reverse-proxy troubleshooting to do. My first guess is the Host header the source is sending to the target. Perhaps it's different from when you connect directly from a third location?
Finally, I think you probably know this, but the path
/couchdb/db1/_local%2F01e935dcd2193b87af34c9b449ae2e20
Is not a standard CouchDB path. By the time CouchDB sees a request, it should have the /couchdb stripped, so the query is for a document called _local%2f... in the database called db1.
Incidentally, it is very important not to let the proxy modify the paths before they hit couch. In particular, if you send %2f then CouchDB had better receive %2f and if you send / then CouchDB had better receive /.
From official documentation...
Note that HTTPS proxies are in theory supported but do not work in 1.0.1. This is because 1.0.1 ships with ibrowse version 1.5.5. The CouchDB version in trunk (from where 1.1 will be based) ships with ibrowse version 1.6.2. This later ibrowse contains fixes for HTTPS proxies.
Can you see which version of ibrowse is involved? Maybe update that ver?
Another thought I have is with regard to the SSL certs. If you don't have any, and I know you don't :), then technically you're doing SSL wrong. In java we know there are ways around this, but maybe try putting in proper certs since all SSL stuff basically involves certs.
And for my last contribution (today) I would say have you looked through this document which seems highly relevant?
http://wiki.apache.org/couchdb/Apache_As_a_Reverse_Proxy