Creates a layered configuration for lbrycrd start.sh

This commit is contained in:
Ryan McGuire 2019-04-30 14:28:07 -04:00 committed by Leopere
parent 77ee9dc39d
commit a9b058255e
2 changed files with 85 additions and 11 deletions

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# Docker image tags
`lbry/lbrycrd`
`[linux-x86_64-production](https://github.com/lbryio/lbry-docker/blob/master/lbrycrd/Dockerfile-linux-x86_64-production)` (Latest release)
## Configuration
The lbrycrd container comes with a default configuration you can use for
production. Extra configuration is optional.
The container includes a `start` script that offers a flexible configuration
style. It allows you to mount your own `lbrycrd.conf` file, or use environment
variables, or a mix of both.
### Environment variables
The environment variables override the values in the mounted config file. If no
mounted config file exists, these variables are used to create a fresh config.
* `PORT` - The main lbrycrd port
* `RPC_USER` - The rpc user
* `RPC_PASSWORD` - The rpc user's password
* `RPC_ALLOW_IP` - the subnet that is allowed rpc access
* `RPC_PORT` - The port to bind the rpc service to
* `RPC_BIND` - The ip address to bind the rpc service to
### Example run commands
Running the default configuration:
```
docker run --rm -it -e RUN_MODE=default lbry/lbrycrd:linux-x86_64-production
```
Running with RPC password changed:
```
docker run --rm -it -e RUN_MODE=default -e RPC_PASSWORD=hunter2 lbry/lbrycrd:linux-x86_64-production
```
Running with a config file but with the RPC password still overridden:
```
docker run --rm -it -v /path/to/lbrycrd.conf:/etc/lbry/lbrycrd.conf -e RUN_MODE=default -e RPC_PASSWORD=hunter2 lbry/lbrycrd:linux-x86_64-production
```

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#!/usr/bin/env bash
CONFIG_PATH=/etc/lbry/lbrycrd.conf
function override_config_option() {
# Remove existing config line from a config file
# and replace with environment fed value.
# Does nothing if the variable does not exist.
# var Name of ENV variable
# option Name of config option
# config Path of config file
local var=$1 option=$2 config=$3
if [[ -v $var ]]; then
# Remove the existing config option:
sed -i "/^$option\W*=/d" $config
# Add the value from the environment:
echo "$option=${!var}" >> $config
fi
}
function set_config() {
CONFIG_PATH=/etc/lbry/lbrycrd.conf
if [ -f "$CONFIG_PATH" ]
then
echo "Using the config file that was mounted into the container."
if [ -d "$CONFIG_PATH" ]; then
echo "$CONFIG_PATH is a directory when it should be a file."
exit 1
elif [ -f "$CONFIG_PATH" ]; then
echo "Merging the mounted config file with environment variables."
local MERGED_CONFIG=/tmp/lbrycrd_merged.conf
cat $CONFIG_PATH > $MERGED_CONFIG
echo "" >> $MERGED_CONFIG
override_config_option PORT port $MERGED_CONFIG
override_config_option RPC_USER rpcuser $MERGED_CONFIG
override_config_option RPC_PASSWORD rpcpassword $MERGED_CONFIG
override_config_option RPC_ALLOW_IP rpcallowip $MERGED_CONFIG
override_config_option RPC_PORT rpcport $MERGED_CONFIG
override_config_option RPC_BIND rpcbind $MERGED_CONFIG
# Make the new merged config file the new CONFIG_PATH
# This ensures that the original file the user mounted remains unmodified
CONFIG_PATH=$MERGED_CONFIG
else
echo "Creating a fresh config file from environment variables."
## Set config params
echo "rpcuser=$RPC_USER" > $CONFIG_PATH
echo "rpcpassword=$RPC_PASSWORD" >> $CONFIG_PATH
echo "rpcallowip=$RPC_ALLOW_IP" >> $CONFIG_PATH
echo "rpcport=9245" >> $CONFIG_PATH
echo "rpcbind=0.0.0.0" >> $CONFIG_PATH
#echo "bind=0.0.0.0" >> $CONFIG_PATH
echo "port=${PORT=9246}" > $CONFIG_PATH
echo "rpcuser=${RPC_USER=lbry}" >> $CONFIG_PATH
echo "rpcpassword=${RPC_PASSWORD=lbry}" >> $CONFIG_PATH
echo "rpcallowip=${RPC_ALLOW_IP=127.0.0.1/24}" >> $CONFIG_PATH
echo "rpcport=${RPC_PORT=9245}" >> $CONFIG_PATH
echo "rpcbind=${RPC_BIND=0.0.0.0}" >> $CONFIG_PATH
fi
echo "Config: "
cat $CONFIG_PATH
}
## Ensure perms are correct prior to running main binary
/usr/bin/fix-permissions