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How to connect with redis sever in python while having a Key Error?
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-1
I'm trying to set up my first Docker Container. For this I wrote an app where you can choose between 3 options and vote for your prefered. However I get a Key Error telling me, that I haven't defined my variable 'REDIS' to connect to the Redis server. How do I connect with it?
I don't know where or how to link it in my code. And whatever I try I get back that error. Here the important code:
from flask import Flask, request, render_template
import os
import random
import redis
import socket
import sys
app = Flask(__name__)
app.config.from_pyfile('config_file.cfg')
if("VOTE1VALUE" in os.environ and os.environ['VOTE1VALUE']):
button1 = os.environ['VOTE1VALUE']
else:
button1 = app.config['VOTE1VALUE']
if("VOTE2VALUE" in os.environ and os.environ['VOTE2VALUE']):
button2 = os.environ['VOTE2VALUE']
else:
button2 = app.config['VOTE2VALUE']
if("VOTE3VALUE" in os.environ and os.environ['VOTE3VALUE']):
button2 = os.environ['VOTE3VALUE']
else:
button2 = app.config['VOTE3VALUE']
if("TITLE" in os.environ and os.environ['TITLE']):
title = os.environ['TITLE']
else:
title = app.config['TITLE']
redis_server = os.environ['REDIS']
try:
if "REDIS_PWD" in os.environ:
r = redis.StrictRedis(host=redis_server,
port = 6379,
password = os.environ['REDIS_PWD'])
else:
r = redis.Redis(redis_server)
r.ping()
except redis.ConnectionError:
exit('Failed to connect to Redis, terminating.')
I thought I'd get it to work like this but when I try to run the docker image I get following Error:
File "programm.py", line 32, in <module>
redis_server = os.environ['REDIS']
File "/usr/local/lib/python3.6/os.py", line 669, in __getitem__
raise KeyError(key) from None
KeyError: 'REDIS'
My question is how to get it to work? And how to connect my programm to the Redis Server.
Thanks in advance!
python
edited Jan 3 at 8:09
bruno desthuilliers
51.8k54465
asked Jan 3 at 7:58
nataliefoersternataliefoerster
35
add a comment |
-1
I'm trying to set up my first Docker Container. For this I wrote an app where you can choose between 3 options and vote for your prefered. However I get a Key Error telling me, that I haven't defined my variable 'REDIS' to connect to the Redis server. How do I connect with it?
I don't know where or how to link it in my code. And whatever I try I get back that error. Here the important code:
from flask import Flask, request, render_template
import os
import random
import redis
import socket
import sys
app = Flask(__name__)
app.config.from_pyfile('config_file.cfg')
if("VOTE1VALUE" in os.environ and os.environ['VOTE1VALUE']):
button1 = os.environ['VOTE1VALUE']
else:
button1 = app.config['VOTE1VALUE']
if("VOTE2VALUE" in os.environ and os.environ['VOTE2VALUE']):
button2 = os.environ['VOTE2VALUE']
else:
button2 = app.config['VOTE2VALUE']
if("VOTE3VALUE" in os.environ and os.environ['VOTE3VALUE']):
button2 = os.environ['VOTE3VALUE']
else:
button2 = app.config['VOTE3VALUE']
if("TITLE" in os.environ and os.environ['TITLE']):
title = os.environ['TITLE']
else:
title = app.config['TITLE']
redis_server = os.environ['REDIS']
try:
if "REDIS_PWD" in os.environ:
r = redis.StrictRedis(host=redis_server,
port = 6379,
password = os.environ['REDIS_PWD'])
else:
r = redis.Redis(redis_server)
r.ping()
except redis.ConnectionError:
exit('Failed to connect to Redis, terminating.')
I thought I'd get it to work like this but when I try to run the docker image I get following Error:
File "programm.py", line 32, in <module>
redis_server = os.environ['REDIS']
File "/usr/local/lib/python3.6/os.py", line 669, in __getitem__
raise KeyError(key) from None
KeyError: 'REDIS'
My question is how to get it to work? And how to connect my programm to the Redis Server.
Thanks in advance!
python
edited Jan 3 at 8:09
bruno desthuilliers
51.8k54465
asked Jan 3 at 7:58
nataliefoersternataliefoerster
35
add a comment |
-1
-1
-1
I'm trying to set up my first Docker Container. For this I wrote an app where you can choose between 3 options and vote for your prefered. However I get a Key Error telling me, that I haven't defined my variable 'REDIS' to connect to the Redis server. How do I connect with it?
I don't know where or how to link it in my code. And whatever I try I get back that error. Here the important code:
from flask import Flask, request, render_template
import os
import random
import redis
import socket
import sys
app = Flask(__name__)
app.config.from_pyfile('config_file.cfg')
if("VOTE1VALUE" in os.environ and os.environ['VOTE1VALUE']):
button1 = os.environ['VOTE1VALUE']
else:
button1 = app.config['VOTE1VALUE']
if("VOTE2VALUE" in os.environ and os.environ['VOTE2VALUE']):
button2 = os.environ['VOTE2VALUE']
else:
button2 = app.config['VOTE2VALUE']
if("VOTE3VALUE" in os.environ and os.environ['VOTE3VALUE']):
button2 = os.environ['VOTE3VALUE']
else:
button2 = app.config['VOTE3VALUE']
if("TITLE" in os.environ and os.environ['TITLE']):
title = os.environ['TITLE']
else:
title = app.config['TITLE']
redis_server = os.environ['REDIS']
try:
if "REDIS_PWD" in os.environ:
r = redis.StrictRedis(host=redis_server,
port = 6379,
password = os.environ['REDIS_PWD'])
else:
r = redis.Redis(redis_server)
r.ping()
except redis.ConnectionError:
exit('Failed to connect to Redis, terminating.')
I thought I'd get it to work like this but when I try to run the docker image I get following Error:
File "programm.py", line 32, in <module>
redis_server = os.environ['REDIS']
File "/usr/local/lib/python3.6/os.py", line 669, in __getitem__
raise KeyError(key) from None
KeyError: 'REDIS'
My question is how to get it to work? And how to connect my programm to the Redis Server.
Thanks in advance!
python
edited Jan 3 at 8:09
bruno desthuilliers
51.8k54465
asked Jan 3 at 7:58
nataliefoersternataliefoerster
35
I'm trying to set up my first Docker Container. For this I wrote an app where you can choose between 3 options and vote for your prefered. However I get a Key Error telling me, that I haven't defined my variable 'REDIS' to connect to the Redis server. How do I connect with it?
I don't know where or how to link it in my code. And whatever I try I get back that error. Here the important code:
from flask import Flask, request, render_template
import os
import random
import redis
import socket
import sys
app = Flask(__name__)
app.config.from_pyfile('config_file.cfg')
if("VOTE1VALUE" in os.environ and os.environ['VOTE1VALUE']):
button1 = os.environ['VOTE1VALUE']
else:
button1 = app.config['VOTE1VALUE']
if("VOTE2VALUE" in os.environ and os.environ['VOTE2VALUE']):
button2 = os.environ['VOTE2VALUE']
else:
button2 = app.config['VOTE2VALUE']
if("VOTE3VALUE" in os.environ and os.environ['VOTE3VALUE']):
button2 = os.environ['VOTE3VALUE']
else:
button2 = app.config['VOTE3VALUE']
if("TITLE" in os.environ and os.environ['TITLE']):
title = os.environ['TITLE']
else:
title = app.config['TITLE']
redis_server = os.environ['REDIS']
try:
if "REDIS_PWD" in os.environ:
r = redis.StrictRedis(host=redis_server,
port = 6379,
password = os.environ['REDIS_PWD'])
else:
r = redis.Redis(redis_server)
r.ping()
except redis.ConnectionError:
exit('Failed to connect to Redis, terminating.')
I thought I'd get it to work like this but when I try to run the docker image I get following Error:
File "programm.py", line 32, in <module>
redis_server = os.environ['REDIS']
File "/usr/local/lib/python3.6/os.py", line 669, in __getitem__
raise KeyError(key) from None
KeyError: 'REDIS'
My question is how to get it to work? And how to connect my programm to the Redis Server.
Thanks in advance!
python
python
edited Jan 3 at 8:09
bruno desthuilliers
51.8k54465
asked Jan 3 at 7:58
nataliefoersternataliefoerster
35
edited Jan 3 at 8:09
bruno desthuilliers
51.8k54465
asked Jan 3 at 7:58
nataliefoersternataliefoerster
35
edited Jan 3 at 8:09
bruno desthuilliers
51.8k54465
edited Jan 3 at 8:09
bruno desthuilliers
51.8k54465
edited Jan 3 at 8:09
bruno desthuilliers
51.8k54465
51.8k54465
asked Jan 3 at 7:58
nataliefoersternataliefoerster
35
asked Jan 3 at 7:58
nataliefoersternataliefoerster
35
asked Jan 3 at 7:58
nataliefoersternataliefoerster
35
35
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
0
Your code fails as there is no environment variable 'REDIS'.
Depending on what you can edit and how you are running your container, you might:
- Declare the REDIS ENV variable in the Dockerfile
- Extend the Docker image just to add your REDIS ENV variable. Then use the new image
- Specify the environment variable value with the
docker runoption "-e" - In case of Docker compose, you can specify the environment variable in the Docker compose file. In this case you might also include Redis as a Docker image, thus it would all be self-contained. Beware of modules though
Hope this helps.
answered Jan 3 at 8:07
fcracker79fcracker79
420314
Thank you! How do I declare the REDIS ENV in my Dockerfile?
– nataliefoerster
Jan 3 at 8:31
From Docker manual:ENV <key> <value>orENV <key>=<value> ...Remember to rebuild the image though.
– fcracker79
Jan 3 at 8:39
Ok thank you, but I mean I set ENV REDIS <value> and what is the value?
– nataliefoerster
Jan 3 at 9:16
Based on the code you attached, it should contain the Redis hostname.
– fcracker79
Jan 3 at 9:41
I'm very sorry for being so stupid but can you give the explicit example? I don't get how to do it ...
– nataliefoerster
Jan 3 at 10:00
|
show 11 more comments
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
Your code fails as there is no environment variable 'REDIS'.
Depending on what you can edit and how you are running your container, you might:
- Declare the REDIS ENV variable in the Dockerfile
- Extend the Docker image just to add your REDIS ENV variable. Then use the new image
- Specify the environment variable value with the
docker runoption "-e" - In case of Docker compose, you can specify the environment variable in the Docker compose file. In this case you might also include Redis as a Docker image, thus it would all be self-contained. Beware of modules though
Hope this helps.
answered Jan 3 at 8:07
fcracker79fcracker79
420314
Thank you! How do I declare the REDIS ENV in my Dockerfile?
– nataliefoerster
Jan 3 at 8:31
From Docker manual:ENV <key> <value>orENV <key>=<value> ...Remember to rebuild the image though.
– fcracker79
Jan 3 at 8:39
Ok thank you, but I mean I set ENV REDIS <value> and what is the value?
– nataliefoerster
Jan 3 at 9:16
Based on the code you attached, it should contain the Redis hostname.
– fcracker79
Jan 3 at 9:41
I'm very sorry for being so stupid but can you give the explicit example? I don't get how to do it ...
– nataliefoerster
Jan 3 at 10:00
|
show 11 more comments
0
Your code fails as there is no environment variable 'REDIS'.
Depending on what you can edit and how you are running your container, you might:
- Declare the REDIS ENV variable in the Dockerfile
- Extend the Docker image just to add your REDIS ENV variable. Then use the new image
- Specify the environment variable value with the
docker runoption "-e" - In case of Docker compose, you can specify the environment variable in the Docker compose file. In this case you might also include Redis as a Docker image, thus it would all be self-contained. Beware of modules though
Hope this helps.
answered Jan 3 at 8:07
fcracker79fcracker79
420314
Thank you! How do I declare the REDIS ENV in my Dockerfile?
– nataliefoerster
Jan 3 at 8:31
From Docker manual:ENV <key> <value>orENV <key>=<value> ...Remember to rebuild the image though.
– fcracker79
Jan 3 at 8:39
Ok thank you, but I mean I set ENV REDIS <value> and what is the value?
– nataliefoerster
Jan 3 at 9:16
Based on the code you attached, it should contain the Redis hostname.
– fcracker79
Jan 3 at 9:41
I'm very sorry for being so stupid but can you give the explicit example? I don't get how to do it ...
– nataliefoerster
Jan 3 at 10:00
|
show 11 more comments
0
0
0
Your code fails as there is no environment variable 'REDIS'.
Depending on what you can edit and how you are running your container, you might:
- Declare the REDIS ENV variable in the Dockerfile
- Extend the Docker image just to add your REDIS ENV variable. Then use the new image
- Specify the environment variable value with the
docker runoption "-e" - In case of Docker compose, you can specify the environment variable in the Docker compose file. In this case you might also include Redis as a Docker image, thus it would all be self-contained. Beware of modules though
Hope this helps.
answered Jan 3 at 8:07
fcracker79fcracker79
420314
Your code fails as there is no environment variable 'REDIS'.
Depending on what you can edit and how you are running your container, you might:
- Declare the REDIS ENV variable in the Dockerfile
- Extend the Docker image just to add your REDIS ENV variable. Then use the new image
- Specify the environment variable value with the
docker runoption "-e" - In case of Docker compose, you can specify the environment variable in the Docker compose file. In this case you might also include Redis as a Docker image, thus it would all be self-contained. Beware of modules though
Hope this helps.
answered Jan 3 at 8:07
fcracker79fcracker79
420314
answered Jan 3 at 8:07
fcracker79fcracker79
420314
answered Jan 3 at 8:07
fcracker79fcracker79
420314
answered Jan 3 at 8:07
fcracker79fcracker79
420314
420314
Thank you! How do I declare the REDIS ENV in my Dockerfile?
– nataliefoerster
Jan 3 at 8:31
From Docker manual:ENV <key> <value>orENV <key>=<value> ...Remember to rebuild the image though.
– fcracker79
Jan 3 at 8:39
Ok thank you, but I mean I set ENV REDIS <value> and what is the value?
– nataliefoerster
Jan 3 at 9:16
Based on the code you attached, it should contain the Redis hostname.
– fcracker79
Jan 3 at 9:41
I'm very sorry for being so stupid but can you give the explicit example? I don't get how to do it ...
– nataliefoerster
Jan 3 at 10:00
|
show 11 more comments
Thank you! How do I declare the REDIS ENV in my Dockerfile?
– nataliefoerster
Jan 3 at 8:31
From Docker manual:ENV <key> <value>orENV <key>=<value> ...Remember to rebuild the image though.
– fcracker79
Jan 3 at 8:39
Ok thank you, but I mean I set ENV REDIS <value> and what is the value?
– nataliefoerster
Jan 3 at 9:16
Based on the code you attached, it should contain the Redis hostname.
– fcracker79
Jan 3 at 9:41
I'm very sorry for being so stupid but can you give the explicit example? I don't get how to do it ...
– nataliefoerster
Jan 3 at 10:00
Thank you! How do I declare the REDIS ENV in my Dockerfile?
– nataliefoerster
Jan 3 at 8:31
Thank you! How do I declare the REDIS ENV in my Dockerfile?
– nataliefoerster
Jan 3 at 8:31
From Docker manual:
ENV <key> <value> or ENV <key>=<value> ... Remember to rebuild the image though.– fcracker79
Jan 3 at 8:39
From Docker manual:
ENV <key> <value> or ENV <key>=<value> ... Remember to rebuild the image though.– fcracker79
Jan 3 at 8:39
Ok thank you, but I mean I set ENV REDIS <value> and what is the value?
– nataliefoerster
Jan 3 at 9:16
Ok thank you, but I mean I set ENV REDIS <value> and what is the value?
– nataliefoerster
Jan 3 at 9:16
Based on the code you attached, it should contain the Redis hostname.
– fcracker79
Jan 3 at 9:41
Based on the code you attached, it should contain the Redis hostname.
– fcracker79
Jan 3 at 9:41
I'm very sorry for being so stupid but can you give the explicit example? I don't get how to do it ...
– nataliefoerster
Jan 3 at 10:00
I'm very sorry for being so stupid but can you give the explicit example? I don't get how to do it ...
– nataliefoerster
Jan 3 at 10:00
|
show 11 more comments
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