Hi Rolf,
Schrittenlocher, Rolf schrieb am Thu, Apr 04, 2024 at 08:29:54AM +0000:
I just saw that "trends" shows network traffic. So the data is already collected and available on the server.
Yes, that data comes from the generic data collection (like process list, load, uptime, etc.) each client sends.
There's just no alerting on traffic thresholds possible. That's one of the metrics for which my plugin can warn or alert (with measurements and comparisons done on the client side, though).
So someone can tell me how I can access the data either with a client script or on server side?
Sorry, not out of my mind. I mostly know how to parse hosts.cfg and extract parameters and flags from there.
The man page xymon(1) shows quite some ways to extract data from the server, except that I was not able to extract anything useful related to trends, netstat or ifstat.
An example of how to work with server data might be our ircbot plugin at https://salsa.debian.org/debian/hobbit-plugins/-/blob/master/src/usr/lib/xym...
But it also just uses "xymoncmd xymon xymondboard" and "xymoncmd xymon query" to fetch data from the server and that one doesn't seem to work with data or trends.
The only way I currently see is to use the "xymoncmd xymon clientlog $hostname" command which fetches the latest raw client message including e.g. the "ifconfig" output. It also has a "netstat" section which e.g. looks like this:
---8<--- ? [netstat] Ip: Forwarding: 1 867497 total packets received 0 forwarded 0 incoming packets discarded 853230 incoming packets delivered 835141 requests sent out 225 outgoing packets dropped Icmp: 21635 ICMP messages received 2 input ICMP message failed ICMP input histogram: destination unreachable: 650 echo requests: 20985 92359 ICMP messages sent 0 ICMP messages failed ICMP output histogram: destination unreachable: 651 echo requests: 70723 echo replies: 20985 IcmpMsg: InType3: 650 InType8: 20985 OutType0: 20985 OutType3: 651 OutType8: 70723 Tcp: 23811 active connection openings 2102 passive connection openings 4 failed connection attempts 1911 connection resets received 21 connections established 1007911 segments received 1268414 segments sent out 176 segments retransmitted 0 bad segments received 853 resets sent Udp: 53387 packets received 649 packets to unknown port received 0 packet receive errors 53372 packets sent 0 receive buffer errors 0 send buffer errors IgnoredMulti: 5414 UdpLite: TcpExt: 1 resets received for embryonic SYN_RECV sockets 12258 TCP sockets finished time wait in fast timer 17779 delayed acks sent 16 delayed acks further delayed because of locked socket Quick ack mode was activated 96 times 71063 packet headers predicted 142582 acknowledgments not containing data payload received 546613 predicted acknowledgments TCPSackRecovery: 43 Detected reordering 2106 times using SACK Detected reordering 36 times using time stamp 2 congestion windows fully recovered without slow start 35 congestion windows partially recovered using Hoe heuristic TCPDSACKUndo: 4 1 congestion windows recovered without slow start after partial ack TCPLostRetransmit: 69 67 fast retransmits 1 retransmits in slow start TCPTimeouts: 87 TCPLossProbes: 26 TCPLossProbeRecovery: 4 TCPBacklogCoalesce: 2432 TCPDSACKOldSent: 96 TCPDSACKRecv: 53 120 connections reset due to unexpected data 13 connections reset due to early user close 7 connections aborted due to timeout TCPDSACKIgnoredNoUndo: 43 TCPSackShifted: 194 TCPSackMerged: 34 TCPSackShiftFallback: 4424 TCPRcvCoalesce: 66342 TCPOFOQueue: 352 TCPChallengeACK: 1 TCPAutoCorking: 28376 TCPFromZeroWindowAdv: 32 TCPToZeroWindowAdv: 32 TCPWantZeroWindowAdv: 323 TCPSynRetrans: 21 TCPOrigDataSent: 1019410 TCPHystartTrainDetect: 656 TCPHystartTrainCwnd: 50284 TCPACKSkippedSynRecv: 11 TCPWinProbe: 1 TCPKeepAlive: 26 TCPDelivered: 1042042 TCPAckCompressed: 109 TcpTimeoutRehash: 80 TcpDuplicateDataRehash: 15 TCPDSACKRecvSegs: 63 IpExt: InMcastPkts: 1579 OutMcastPkts: 4 InBcastPkts: 5414 InOctets: 217038821 OutOctets: 653115273 InMcastOctets: 50528 OutMcastOctets: 160 InBcastOctets: 1360064 InNoECTPkts: 909738 MPTcpExt: Sctp: 0 Current Associations 0 Active Associations 0 Passive Associations 0 Number of Aborteds 0 Number of Graceful Terminations 0 Number of Out of Blue packets 0 Number of Packets with invalid Checksum 0 Number of control chunks sent 0 Number of ordered chunks sent 0 Number of Unordered chunks sent 0 Number of control chunks received 0 Number of ordered chunks received 0 Number of Unordered chunks received 0 Number of messages fragmented 0 Number of messages reassembled 0 Number of SCTP packets sent 0 Number of SCTP packets received [?] ? --->8---
But you would need to parse the data interesting for you out of this yourself. Hope this helps nevertheless.
Regards, Axel-- PGP: 2FF9CD59612616B5 /~\ Plain Text Ribbon Campaign, http://arc.pasp.de/ Mail: abe at deuxchevaux.org \ / Gegen HTML in E-Mails und Usenet Mail+Jabber: abe at noone.org X https://axel.beckert.ch/ / \ I love long mails: https://email.is-not-s.ms/