使用环境变量在redis.conf中设置动态路径 [英] Setting dynamic path in the redis.conf using the Environment variable

问题描述

我有一个环境变量 MY_HOME ，该变量具有目录/home/abc

I have a environment variable MY_HOME which has a path to a directory /home/abc

现在，我有一个 redis.conf 文件，我需要在其中设置此路径

Now, I have a redis.conf file In which I need to set this path like this

**redis.conf**

pidfile $MY_HOME/local/var/pids/redis.pid
logfile $MY_HOME/local/var/log/redis.log
dir $MY_HOME/local/var/lib/redis/

就像我们在命令行中所做的那样，以便我的配置文件根据Environment变量选择路径.

like we do in command line, so that my config file picks the path based on the Environment variable.

推荐答案

因为Redis可以从 stdin 中读取其配置，所以我做的事情与@jolestar建议的非常相似.我将占位符变量放入 redis.conf 中，然后在Redis启动器中使用 sed 替换了它们.例如:

Because Redis can read its config from stdin, I do something very similar to what @jolestar suggested. I put placeholder variables in my redis.conf and then replace them using sed in my Redis launcher. For example:

==========
$MY_HOME/redis/redis.conf
==========
...
pidfile {DIR}/pids/server{n}.pid
port 123{n}
...

然后我有一个脚本来启动Redis:

Then I have a script to start Redis:

==========
runredis.sh
==========
DIR=$MY_HOME/redis
for n in {1..4}; do
    echo "starting redis-server #$n ..."
    sed -e "s/{n}/$n/g" -e "s/{DIR}/$DIR/g" < $DIR/redis.conf | redis-server -
done

我一直在使用这种方法，效果很好.

I've been using this approach forever and it works out well.

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