tornadoweb
Error in 'blog' demo --- can't open blog.py
I'm unable to build the 'blog' demo application using docker-compose up. I'm definitely not a docker expert, so it could just be an easy fix.
I try to run docker-compose up in the demos/blog directory, but the build fails because of an unknown option for the iptables command during postgres configuration ( docker0: iptables v1.8.4 (legacy): unknown option "--\dport" ).
Below is the full output from docker-compose up:
[robertc@Z38S blog]$ docker-compose up
Starting blog_postgres_1 ...
WARNING: Host is already in use by another container
ERROR: for blog_postgres_1 Cannot start service postgres: driver failed programming external connectivity on endpoint blog_postgres_1 (7fc11caf4be5a390d6ccdced928c5ea11d1768090d32b3b0709d41e\
d571e00bd): (iptables failed: iptables --wait -t nat -A DOCKER -p tcp -d 0/0 --dport 32797 -j DNAT --to-destination 172.17.0.2:3306 ! -i docker0: iptables v1.8.4 (legacy): unknown option "--\
dport"
Try `iptables -h' or 'iptables --help' for more information.
(exit status 2))
ERROR: for postgres Cannot start service postgres: driver failed programming external connectivity on endpoint blog_postgres_1 (7fc11caf4be5a390d6ccdced928c5ea11d1768090d32b3b0709d41ed571e00\
bd): (iptables failed: iptables --wait -t nat -A DOCKER -p tcp -d 0/0 --dport 32797 -j DNAT --to-destination 172.17.0.2:3306 ! -i docker0: iptables v1.8.4 (legacy): unknown option "--dport"
Try `iptables -h' or 'iptables --help' for more information.
(exit status 2))
ERROR: Encountered errors while bringing up the project.
Edit: This could be related to this issue. I'll check to see if the suggested fix (symlink iptables-nft) works later today.
postgres now loads after applying the fix suggested (see above), but I'm still having trouble getting the blog demo to work properly with docker-compose up.
Output now:
[robertc@Z38S blog]$ docker-compose up
Starting blog_postgres_1 ...
Starting blog_blog_1 ...
Attaching to blog_postgres_1, blog_blog_1
postgres_1 | 2020-06-01 21:41:24.620 UTC [1] LOG: listening on IPv4 address "0.0.0.0", port 5432
postgres_1 | 2020-06-01 21:41:24.620 UTC [1] LOG: listening on IPv6 address "::", port 5432
postgres_1 | 2020-06-01 21:41:24.624 UTC [1] LOG: listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
postgres_1 | 2020-06-01 21:41:24.645 UTC [23] LOG: database system was shut down at 2020-06-01 20:54:53 UTC
postgres_1 | 2020-06-01 21:41:24.648 UTC [1] LOG: database system is ready to accept connections
blog_1 | python3: can't open file 'blog.py': [Errno 2] No such file or directory
blog_blog_1 exited with code 2