从Rails服务器连接到Redis服务器(均在Vagrant VM中运行)时,我正在尝试解决此错误:
Redis::CannotConnectError: Error connecting to Redis on 127.0.0.1:6379 (Errno::ECONNREFUSED)
我认为,可以通过以下方式验证Redis服务器是否正在运行:
ps aux | grep redis
redis 839 0.1 0.1 35140 1840 ? Ssl 00:21 0:00 /usr/local/bin/redis-server *:6379
vagrant 1220 0.0 0.0 11676 952 pts/0 R+ 00:22 0:00 grep --color=auto redis
sudo netstat -tnlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:6379 0.0.0.0:* LISTEN 839/redis-server *:
tcp 0 0 0.0.0.0:57102 0.0.0.0:* LISTEN 778/rpc.statd
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 507/rpcbind
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 725/sshd
tcp6 0 0 :::6379 :::* LISTEN 839/redis-server *:
tcp6 0 0 :::111 :::* LISTEN 507/rpcbind
tcp6 0 0 :::22 :::* LISTEN 725/sshd
tcp6 0 0 :::49667 :::* LISTEN 778/rpc.statd
我的redis.conf中有这个:
# Accept connections on the specified port, default is 6379.
# If port 0 is specified Redis will not listen on a TCP socket.
port 6379
# If you want you can bind a single interface, if the bind option is not
# specified all the interfaces will listen for incoming connections.
#
bind 127.0.0.1
和Vagrantfile:
VAGRANTFILE_API_VERSION = "2"
Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
config.vm.box = "ubuntu-12.04-amd64"
# THE URL FROM WHERE THE 'CONFIG.VM.BOX' BOX WILL BE FETCHED IF IT
# DOESN'T ALREADY EXIST ON THE USER'S SYSTEM.
config.vm.box_url = "http://files.vagrantup.com/precise64.box"
config.vm.network "forwarded_port", guest: 6379, host: 6379, auto_correct: true
config.vm.provider "virtualbox" do |v|
v.customize ["modifyvm", :id, "--memory", "1024"]
v.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
end
config.vm.provision "shell", path: "init.sh"
end
我尝试遵循规范的条目,但没有取得任何进展。我可能忽略了一些明显的事情。有人可以为我指出其他可以尝试的正确方向吗?
编辑:完整的错误消息:
$redis = Redis.new(:host => '127.0.0.1', :port => 6379)
=> #<Redis client v3.2.2 for redis://127.0.0.1:6379/0>
$redis.set('a', 'b')
Redis::CannotConnectError: Error connecting to Redis on 127.0.0.1:6379 (Errno::ECONNREFUSED)
编辑:注释掉绑定127.0.0.1,并能够从Redis盒中ping起来,但是仍然无法从Rails运气:
redis-cli -h 127.0.0.1 ping
PONG
弄清楚了,我需要为我的VM(VirtualBox)使用适配器的IP地址,以使其在Windows计算机上正常工作。这工作:
$redis = Redis.new(:host => '192.168.56.1', :port => 6379)
=> #<Redis client v3.2.2 for redis://192.168.56.1:6379/0>
$redis.set('a', 'b')
=> "OK"
$redis.get('a')
=> "b"
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我来说两句