Redis系列~(十七)Could not connect to Redis No route to host问题解决
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最近一台电脑突然系统崩溃了,想做个新增节点的实验。由于之前装的都是ubuntu操作系统,于是想选个异构的REDHAT试试。
在试验第一步,装了个Redis进行看看,才发现远程无法访问,以前由于都装了有SSH,能轻松访问。而这回出现的错误是:Could not connect to Redis at 192.168.2.195:6379: No route to host
这个问题以前还真没遇到过。网上一查,才发现是新装系统设置的iptables问题。
于是设置
iptables -N REDISiptables -A REDIS -s 192.168.10.1 -j ACCEPTiptables -A REDIS -s 192.168.10.2 -j ACCEPTiptables -A REDIS -j LOG --log-prefix "unauth-redis-access"iptables -A REDIS -j REJECT --reject-with icmp-port-unreachableiptables -I INPUT -p tcp --dport 6379 -j REDIS
或者
sudo iptables -F
轻松解决。
如下测试:
ndscbigdata@ubuntu-bigdata-3:/usr/local/bin$ redis-cli -h "192.168.2.195" -p 6379
Could not connect to Redis at 192.168.2.195:6379: No route to host
not connected> quit
ndscbigdata@ubuntu-bigdata-3:/usr/local/bin$ redis-cli -h "192.168.2.195" -p 6379
Could not connect to Redis at 192.168.2.195:6379: No route to host
not connected> quit
ndscbigdata@ubuntu-bigdata-3:/usr/local/bin$ redis-cli -h "192.168.2.195" -p 6379
192.168.2.195:6379> select 10
(error) NOAUTH Authentication required.
192.168.2.195:6379> quit
ndscbigdata@ubuntu-bigdata-3:/usr/local/bin$ redis-cli -h 192.168.2.195 -p 6379 -a ndscndscndsc
192.168.2.195:6379> select 10
OK
192.168.2.195:6379[10]> keys *
1) "189234234"
2) "123"
192.168.2.195:6379[10]>
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