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This is similar, but not quite the same behaviour as the bug I've got open, also with write_graphite and TCP behaviour. Mine is that write_graphite doesn't recover if the graphite carbon-cache is restarted. (<a href="https://github.com/collectd/collectd/issues/430">https://github.com/collectd/collectd/issues/430</a>).
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<div>I know this isn't the answer, but switching to UDP is a workaround. I don't like the perceived unreliability though, as I'm quite dependant on the metrics being available. </div>
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<div>cheers</div>
<div>mike</div>
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<div style="font-family: Calibri, sans-serif; font-size: 14px; ">-- </div>
<div style="font-family: Calibri, sans-serif; font-size: 14px; "><font face="Courier New"><span style="font-size: 12px; ">Michael Hart</span></font></div>
<div style="font-family: Calibri, sans-serif; font-size: 14px; "><font face="Courier New"><span style="font-size: 12px; ">Arctic Wolf Networks</span></font></div>
<div style="font-family: Calibri, sans-serif; font-size: 14px; "><font face="Courier New"><span style="font-size: 12px; ">M: 226.388.4773</span></font></div>
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<div>On 2013-10-17, at 8:49 PM, ryanL <<a href="mailto:ryan.landry@gmail.com">ryan.landry@gmail.com</a>> wrote:</div>
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<blockquote type="cite">heya. i've compiled 5.4 for linux (centos) at commit 0a161fcfd, and<br>
seem to be having a problem that does not exist at 5.1.<br>
<br>
my collectd is pretty barebones, just doing snmp polling against<br>
network devices every 60s. when first starting it up, i get an<br>
established TCP connection to my graphite collector and values get<br>
written. then, we get stuck. i can see in tcpdump that collectd is<br>
polling the network and getting values, but can't write to graphite.<br>
<br>
i see this:<br>
<br>
# while sleep 1; do pgrep collectd | xargs sudo /usr/sbin/lsof -Pnp |<br>
grep TCP; done<br>
collectd 7996 produser 10u IPv4 36198298 0t0<br>
TCP 10.1.12.2:53798->10.101.3.213:2003 (CLOSE_WAIT)<br>
collectd 7996 produser 10u IPv4 36198298 0t0<br>
TCP 10.1.12.2:53798->10.101.3.213:2003 (CLOSE_WAIT)<br>
collectd 7996 produser 10u IPv4 36198298 0t0<br>
TCP 10.1.12.2:53798->10.101.3.213:2003 (CLOSE_WAIT)<br>
collectd 7996 produser 10u IPv4 36198298 0t0<br>
TCP 10.1.12.2:53798->10.101.3.213:2003 (CLOSE_WAIT)<br>
collectd 7996 produser 10u IPv4 36198298 0t0<br>
TCP 10.1.12.2:53798->10.101.3.213:2003 (CLOSE_WAIT)<br>
<br>
it stays in this state forever until i restart collectd. upon doing so<br>
i'll get one initial blast of collected data, and then we're jammed<br>
again.<br>
<br>
my relevant collectd config:<br>
<br>
<Plugin write_graphite><br>
<Carbon><br>
Host "graphite-collector"<br>
Port "2003"<br>
Protocol "tcp"<br>
Prefix "collectd."<br>
StoreRates false<br>
AlwaysAppendDS false<br>
Postfix ""<br>
EscapeCharacter "_"<br>
</Carbon><br>
</Plugin><br>
<br>
on the collectd 5.1 box, it remains like this:<br>
<br>
$ while sleep 1; do pgrep collectd | xargs sudo /usr/sbin/lsof -Pnp |<br>
grep TCP; done<br>
collectd 5638 root 9u IPv4 561435650 0t0 TCP<br>
10.101.3.9:51249->10.101.3.213:2003 (ESTABLISHED)<br>
collectd 5638 root 9u IPv4 561435650 0t0 TCP<br>
10.101.3.9:51249->10.101.3.213:2003 (ESTABLISHED)<br>
collectd 5638 root 9u IPv4 561435650 0t0 TCP<br>
10.101.3.9:51249->10.101.3.213:2003 (ESTABLISHED)<br>
collectd 5638 root 9u IPv4 561435650 0t0 TCP<br>
10.101.3.9:51249->10.101.3.213:2003 (ESTABLISHED)<br>
collectd 5638 root 9u IPv4 561435650 0t0 TCP<br>
10.101.3.9:51249->10.101.3.213:2003 (ESTABLISHED)<br>
collectd 5638 root 9u IPv4 561435650 0t0 TCP<br>
10.101.3.9:51249->10.101.3.213:2003 (ESTABLISHED)<br>
collectd 5638 root 9u IPv4 561435650 0t0 TCP<br>
10.101.3.9:51249->10.101.3.213:2003 (ESTABLISHED)<br>
collectd 5638 root 9u IPv4 561435650 0t0 TCP<br>
10.101.3.9:51249->10.101.3.213:2003 (ESTABLISHED)<br>
<br>
any ideas, or further info i can give you guys?<br>
<br>
thanks!<br>
<br>
ryan<br>
<br>
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</blockquote>
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