ruby1.9 下启动报错

[newluhuibiao]

[root@DB2 ~]#redis_node_manager -n 10.46.73.15:6379,10.46.78.66:6379 -z 10.46.73.15:2181,10.46.78.66:2181
/usr/local/ruby/lib/ruby/1.9.1/yaml.rb:84:in <top (required)>': It seems your ruby installation is missing psych (for YAML output). To eliminate this warning, please install libyaml and reinstall your ruby. 2015-12-23 02:14:56 UTC RedisFailover 24708 INFO: Redis Node Manager v1.0.2 starting (ruby 1.9.3p551 (2014-11-13 revision 48407) [x86_64-linux]) 2015-12-23 02:14:56 UTC RedisFailover 24708 INFO: Created ZK node /redis_failover 2015-12-23 02:14:56 UTC RedisFailover 24708 INFO: Created ZK node /redis_failover/manager_node_state /usr/local/ruby/lib/ruby/gems/1.9.1/gems/redis_failover-1.0.2/lib/redis_failover/node_manager.rb:429:ingethostbyname': getaddrinfo: Name or service not known (SocketError)
from /usr/local/ruby/lib/ruby/gems/1.9.1/gems/redis_failover-1.0.2/lib/redis_failover/node_manager.rb:429:in manager_id' from /usr/local/ruby/lib/ruby/gems/1.9.1/gems/redis_failover-1.0.2/lib/redis_failover/node_manager.rb:454:incurrent_state_path'
from /usr/local/ruby/lib/ruby/gems/1.9.1/gems/redis_failover-1.0.2/lib/redis_failover/node_manager.rb:289:in spawn_watchers' from /usr/local/ruby/lib/ruby/gems/1.9.1/gems/redis_failover-1.0.2/lib/redis_failover/node_manager.rb:58:instart'
from /usr/local/ruby/lib/ruby/gems/1.9.1/gems/redis_failover-1.0.2/lib/redis_failover/runner.rb:13:in run' from /usr/local/ruby/lib/ruby/gems/1.9.1/gems/redis_failover-1.0.2/bin/redis_node_manager:6:in<top (required)>'
from /usr/local/ruby/bin/redis_node_manager:23:in load' from /usr/local/ruby/bin/redis_node_manager:23:in

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