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我有动物园管理员的只有2个节点的群集中,每个zoo.conf具有以下ZooKeeper节点计数器?
# Servers
server.1=10.138.0.8:2888:3888
server.2=10.138.0.9:2888:3888
相同的两行是存在于这两个 CONFIGS
[[email protected] supervisor.d]# echo mntr | nc 10.138.0.8 2181
zk_version 3.4.10-39d3a4f269333c922ed3db283be479f9deacaa0f, built on 03/23/2017 10:13 GMT
zk_avg_latency 0
zk_max_latency 0
zk_min_latency 0
zk_packets_received 5
zk_packets_sent 4
zk_num_alive_connections 1
zk_outstanding_requests 0
zk_server_state follower
zk_znode_count 4
zk_watch_count 0
zk_ephemerals_count 0
zk_approximate_data_size 27
zk_open_file_descriptor_count 28
zk_max_file_descriptor_count 4096
[[email protected] supervisor.d]# echo mntr | nc 10.138.0.9 2181
zk_version 3.4.10-39d3a4f269333c922ed3db283be479f9deacaa0f, built on 03/23/2017 10:13 GMT
zk_avg_latency 0
zk_max_latency 0
zk_min_latency 0
zk_packets_received 3
zk_packets_sent 2
zk_num_alive_connections 1
zk_outstanding_requests 0
zk_server_state leader
zk_znode_count 4
zk_watch_count 0
zk_ephemerals_count 0
zk_approximate_data_size 27
zk_open_file_descriptor_count 29
zk_max_file_descriptor_count 4096
zk_followers 1
zk_synced_followers 1
zk_pending_syncs 0
为什么zk_znode_count == 4?