379766fc5e
* Use the `docker volume` mechanism. * Less confusing and makes more sense. * Released in ~ docker v1.9
40 lines
2.0 KiB
Markdown
40 lines
2.0 KiB
Markdown
# Debugging
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Random things I do to debug the containers.
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## Login Shells
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* Create a shell in the running docker container (aka namespace) with [nsenter](https://github.com/jpetazzo/nsenter)
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* If you don't have nsenter/docker-enter, you can mount the data container and modify it with
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docker run --rm -it -v $OVPN_DATA:/etc/openvpn kylemanna/openvpn bash -l
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## Stream OpenVPN Logs
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1. Get the container's name or container ID:
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root@vpn:~/docker-openvpn# docker ps
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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ed335aaa9b82 kylemanna/openvpn:latest ovpn_run 5 minutes ago Up 5 minutes 0.0.0.0:1194->1194/udp sad_lovelace
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2. Tail the logs:
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root@vpn:~/docker-openvpn# docker logs -f sad_lovelace
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+ mkdir -p /dev/net
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+ [ ! -c /dev/net/tun ]
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+ mknod /dev/net/tun c 10 200
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+ [ ! -d /etc/openvpn/ccd ]
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+ iptables -t nat -A POSTROUTING -s 192.168.254.0/24 -o eth0 -j MASQUERADE
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+ iptables -t nat -A POSTROUTING -s 192.168.255.0/24 -o eth0 -j MASQUERADE
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+ conf=/etc/openvpn/openvpn.conf
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+ [ ! -s /etc/openvpn/openvpn.conf ]
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+ conf=/etc/openvpn/udp1194.conf
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+ openvpn --config /etc/openvpn/udp1194.conf
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Tue Jul 1 06:56:48 2014 OpenVPN 2.3.2 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [PKCS11] [eurephia] [MH] [IPv6] built on Mar 17 2014
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Tue Jul 1 06:56:49 2014 Diffie-Hellman initialized with 2048 bit key
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Tue Jul 1 06:56:49 2014 Control Channel Authentication: using '/etc/openvpn/pki/ta.key' as a OpenVPN static key file
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Tue Jul 1 06:56:49 2014 Outgoing Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
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Tue Jul 1 06:56:49 2014 Incoming Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
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Tue Jul 1 06:56:49 2014 Socket Buffers: R=[212992->131072] S=[212992->131072]
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