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Martin Hope
Energya
Asked: 2021-05-20 07:51:49 +0800 CST
  • 0

我已经让 munin-node 在我的机器上成功运行了一段时间，但最近它不再启动了。没有 munin-node 日志可供我检查，systemctl status munin-node也没有提供很多有用的信息：

[root@host /]# systemctl status munin-node
● munin-node.service - Munin Node
   Loaded: loaded (/usr/lib/systemd/system/munin-node.service; enabled; vendor preset: disabled)
   Active: failed (Result: timeout) since Tue 2021-05-18 23:35:16 CEST; 1h 8min ago
     Docs: man:munin-node(1)
           http://guide.munin-monitoring.org/en/latest/node/index.html
  Process: 7710 ExecStart=/usr/sbin/munin-node --foreground (code=exited, status=0/SUCCESS)
 Main PID: 7710 (code=exited, status=0/SUCCESS)

May 18 23:33:44 host systemd[1]: Starting Munin Node...
May 18 23:35:14 host systemd[1]: munin-node.service start operation timed out. Terminating.
May 18 23:35:16 host systemd[1]: Failed to start Munin Node.
May 18 23:35:16 host systemd[1]: Unit munin-node.service entered failed state.
May 18 23:35:16 host systemd[1]: munin-node.service failed.
service munin centos7
Martin Hope
Energya
Asked: 2020-12-21 07:57:14 +0800 CST
  • 1

我想添加一个运行 CentOS 7 的新节点，由我的 munin 服务器（CentOS 7）监控，但它无法连接到它。它可以很好地连接到我的其他节点（也是 CentOS 7），并且能够 ping 有问题的新节点：

[root@australium ~]# ping my-munin-node
PING my-munin-node (132.229.44.220) 56(84) bytes of data.
64 bytes from my-munin-node (132.229.44.220): icmp_seq=1 ttl=63 time=0.597 ms
[root@australium ~]# ncat 132.229.44.220 4949
Ncat: No route to host.

据我所知，我的防火墙不应该阻止它：

[root@my-munin-node ~]# iptables -S | grep 4949
-A IN_public_allow -p tcp -m tcp --dport 4949 -m conntrack --ctstate NEW,UNTRACKED -j ACCEPT

这是详细的 ncat 输出：

[root@australium ~]# ncat -vvvv 132.229.44.220 4949
Ncat: Version 7.50 ( https://nmap.org/ncat )
NCAT DEBUG: Using system default trusted CA certificates and those in /usr/share/ncat/ca-bundle.crt.
NCAT DEBUG: Unable to load trusted CA certificates from /usr/share/ncat/ca-bundle.crt: error:02001002:system library:fopen:No such file or directory
libnsock nsi_new2(): nsi_new (IOD #1)
libnsock msevent_new(): msevent_new (IOD #1) (EID #8)
libnsock nsock_connect_tcp(): TCP connection requested to 132.229.44.220:4949 (IOD #1) EID 8
libnsock nsp_add_event(): NSE #8: Adding event
libnsock nsock_loop(): nsock_loop() started (no timeout). 1 events pending
libnsock nsock_trace_handler_callback(): Callback: CONNECT ERROR [No route to host (113)] for EID 8 [132.229.44.220:4949]
Ncat: No route to host.

任何潜在的解决方案或指针都将受到欢迎。

munin centos7 linux-networking