Anyone has any experience with Python and Postgres, specifically Reddit Code?

June 29, 2013 5.9k views
george.semaan
By:
george.semaan
Hello, I'm trying to install Reddit Code (https://github.com/reddit/reddit) on Ubuntu 12.04. I already installed it locally on my laptop and it worked, the process was smooth. But now that I'm trying it on a live node, I keep getting errors regarding Cassandra. It says that Cassandra cannot connect to localhost port 9160. I didn't have that problem when I worked with locally. Reddit Code requires a list of dependencies for it to work: https://github.com/reddit/reddit/wiki/Dependencies They even have an automated installation script for Ubuntu 12.04: https://github.com/reddit/reddit/wiki/reddit-install-script-for-Ubuntu But I guess you need to install the dependencies manually first before you run that script. Thank you for your time.
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10 Answers
kamaln7 MOD June 29, 2013
You can run the automated installation script before installing the dependencies, it'll install them for you.

Make sure you run it on a fresh new droplet. Let me know how it goes for you.
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george.semaan June 29, 2013
I created a new droplet and ran the automated script

wget https://raw.github.com/reddit/reddit/master/install-reddit.sh
chmod +x install-reddit.sh
./install-reddit.sh

I changed the domain name from reddit.local to my ip address 37.139.5.27

Now if you goto http://37.139.5.27/ you get a big list of errors
InvalidRequestException: InvalidRequestException(why='ModActionBySR already exists in keyspace reddit')
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george.semaan June 29, 2013
Sorry the domain was set to a different IP address, I fixed it and now I'm getting this error.

AllServersUnavailable: An attempt was made to connect to each of the servers twice, but none of the attempts succeeded. The last failure was TTransportException: Could not connect to 127.0.0.1:9160

http://37.139.5.27/
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kamaln7 MOD June 29, 2013
@george.semaan: Run "netstat -plutn" - is there anything listening on port 9160?
It looks like Cassandra has crashed - try resizing your droplet to a larger plan with more RAM.
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george.semaan June 29, 2013
No, looks like nothing is listening on that port. Do you think 1GB ram will do the job?

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:11211 0.0.0.0:* LISTEN 10154/memcached
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 13905/haproxy
tcp 0 0 0.0.0.0:46065 0.0.0.0:* LISTEN 11513/beam
tcp 0 0 0.0.0.0:4369 0.0.0.0:* LISTEN 11500/epmd
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 681/sshd
tcp 0 0 127.0.0.1:5432 0.0.0.0:* LISTEN 11051/postgres
tcp 0 0 0.0.0.0:8001 0.0.0.0:* LISTEN 31128/python
tcp6 0 0 :::22 :::* LISTEN 681/sshd
tcp6 0 0 :::5672 :::* LISTEN 11513/beam
udp 0 0 127.0.0.1:11211 0.0.0.0:* 10154/memcached
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kamaln7 MOD June 29, 2013
Try resizing to 1GB, you can always scale down later (I don't recommend that since it doesn't seem like 512MB is enough for your application).
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george.semaan June 29, 2013
Yes, it seems that it's working.
Thank you.
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kamaln7 MOD June 29, 2013
Awesome! Really glad to hear that. :]
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matthewh00lmes August 10, 2013
I seem to be getting the same exact issues on http://192.241.239.6/

Same exact error, same exact netstat output. I'm also already on the 1 gig plan. Any ideas?
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kamaln7 MOD August 11, 2013
@matthewh00lmes: I'm seeing RoR's welcome page -- are you still experiencing the issue?
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