opscenter agent 无法连接到 opscenter。
Opscenter 的代理.log显示这样的错误。（ 将 IP 替换为 XX）
INFO [pdp-loader] 2014-11-28 12:03:53,517 Attempting to load stored metric values.
ERROR [StompConnection receiver] 2014-11-28 12:03:54,814 failed connecting to <X.X.X.X>:61620:java.net.UnknownHostException: <X.X.X.X>
INFO [StompConnection receiver] 2014-11-28 12:03:54,814 Reconnecting in 6s.
ERROR [StompConnection receiver] 2014-11-28 12:04:00,814 failed connecting to <X.X.X.X>:61620:java.net.UnknownHostException: <X.X.X.X>
INFO [StompConnection receiver] 2014-11-28 12:04:00,814 Reconnecting in 14s.
ERROR [StompConnection receiver] 2014-11-28 12:04:14,818 failed connecting to <X.X.X.X>:61620:java.net.UnknownHostException: <X.X.X.X>
INFO [StompConnection receiver] 2014-11-28 12:04:14,818 Reconnecting in 30s.
ERROR [StompConnection receiver] 2014-11-28 12:04:44,822 failed connecting to <X.X.X.X>:61620:java.net.UnknownHostException: <X.X.X.X>
INFO [StompConnection receiver] 2014-11-28 12:04:44,822 Reconnecting in 62s.
ERROR [StompConnection receiver] 2014-11-28 12:05:46,826 failed connecting to <X.X.X.X>:61620:java.net.UnknownHostException: <X.X.X.X>
INFO [StompConnection receiver] 2014-11-28 12:05:46,826 Reconnecting in 60s.
ERROR [StompConnection receiver] 2014-11-28 12:06:46,830 failed connecting to <X.X.X.X>:61620:java.net.UnknownHostException: <X.X.X.X>
而Opscenterd.log没有什么特别的。
我的配置如下。
操作中心配置。
$cat opscenter-5.0.1/conf/opscenterd.conf
[webserver]
port = 8888
interface = 0.0.0.0
[logging]
[authentication]
enabled = False
[stat_reporter]
[agents]
use_ssl = False
代理配置。
$ cat datastax-agent-5.0.1/conf/address.yaml
stomp_interface: <X.X.X.X>
use_ssl: 0
所以我检查端口。
$netstat -an | grep 61620
tcp 0 0 0.0.0.0:61620 0.0.0.0:* LISTEN
$ telnet X.X.X.X 61620
Trying X.X.X.X...
Connected to X.X.X.X.
Escape character is '^]'.
似乎还可以。
但是Opscenter代理一次又一次地向我显示错误.....
INFO [StompConnection receiver] 2014-11-28 12:05:46,826 Reconnecting in 60s.
ERROR [StompConnection receiver] 2014-11-28 12:06:46,830 failed connecting to <X.X.X.X>:61620:java.net.UnknownHostException: <X.X.X.X>
是加法....
我正在 CentOS 版本 6.5（最终版）上运行 cassandra 2.1.2（ 3 副本）和内核：2.6.32-431.23.3.el6.x86_64
有人可以帮助我吗？
所以我在OpsCenter诊断输出中有一个稍微不同的消息：调用 CreateClusterConfController 时出现处理错误：无法连接到群集
但是，我也在运行Cassandra 2.1.2和OpsCenter 5.0.1，并且在连接到现有集群时遇到问题，直到我在cassandra.yaml中看到了这一点。
listen_address
# You _must_ change this if you want multiple nodes to be able to communicate!
# Leaving it blank leaves it up to InetAddress.getLocalHost(). This
# will always do the Right Thing _if_ the node is properly configured
# (hostname, name resolution, etc), and the Right Thing is to use the
# address associated with the hostname (it might not be).
似乎这包括OpsCenter。所以我把它注释掉了。我还注释掉了rpc_address，并让它自动配置自己。
请验证这些设置，重新启动 cassandra，然后尝试通过 OpsCenter 再次连接。