[Chicago] Digital Ocean, pip, and UFW on Ubuntu

[Don Drake]

Failure in name resolution means DNS is not getting through.  Open up port 53 tcp/udp.

-Don

--
Don Drake
http://www.drakeconsulting.com/
312-560-1574
800-733-2143

> On Dec 21, 2016, at 3:09 PM, Aaron Elmquist <elmq0022 at umn.edu> wrote:
> 
> Sure thing.  
> 
> pip install requests 
> 
> Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f01a85fa390>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution',)': /simple/requests/
> 
> This repeats 4 more times.  I see 5 times is the default in the docs.  
> 
> Could not find a version that satisfies the requirement requests (from versions: )
> No matching distribution found for requests
> 
> By the way temporarily disabling the firewall resolves this.  
> 
> sudo ufw disable
> 
> Collecting requests
> Downloading requests-2.12.4-py2.py3-none-any.whl (576kB)
>     100% |████████████████████████████████| 583kB 1.0MB/s
> Installing collected packages: requests
> Successfully installed requests-2.12.4
> 
> sudo ufw enable
> 
> Toggling the firewall is probably bad.  
> 
> Output from  sudo ufw status:
> 
> To                         Action      From
> --                         ------      ----
> 22                         ALLOW       Anywhere
> 80/tcp                     ALLOW       Anywhere
> 21/tcp                     ALLOW       Anywhere
> OpenSSH                    ALLOW       Anywhere
> Nginx Full                 ALLOW       Anywhere
> 3128/tcp                   ALLOW       Anywhere
> 3128                       ALLOW       Anywhere
> 
> 22 (v6)                    ALLOW       Anywhere (v6)
> 80/tcp (v6)                ALLOW       Anywhere (v6)
> 21/tcp (v6)                ALLOW       Anywhere (v6)
> OpenSSH (v6)               ALLOW       Anywhere (v6)
> Nginx Full (v6)            ALLOW       Anywhere (v6)
> 3128/tcp (v6)              ALLOW       Anywhere (v6)
> 3128 (v6)                  ALLOW       Anywhere (v6)
> 
> Thanks for the help.  
> 
> On Wed, Dec 21, 2016 at 2:38 PM, Carl Karsten <carl at personnelware.com <mailto:carl at personnelware.com>> wrote:
> There are lots of reasons for why pip fails.  we can guess, but that's generally a bad idea.
> 
> cut/paste the command and *all* of the output.
> 
> On Wed, Dec 21, 2016 at 2:07 PM, Aaron Elmquist <elmq0022 at umn.edu <mailto:elmq0022 at umn.edu>> wrote:
> I recently deployed a DigitalOcean droplet with Ubuntu and followed the documentation to harden the server and get Flask up and running with Gunicorn and Nginx.  
> 
> However, after configuring UFW, I found I cannot get pip to work without disabling the firewall.  I tried allowing port 3128 for pip, but that has not resolved my issue.  
> 
> I'm hoping someone on the list has encountered this issue before and found a fix.  
> 
> Thanks,
> 
> Aaron
> 
> 
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> 
> 
> -- 
> Carl K
> 
> 
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