* Ralf Hildebrandt r...@sys4.de:
I'd guess you're running out of TCP ports.
I think so too, but it's somewhat unlikely! We're using 10 outbound IP
adresses! In a random fashion (and I'm seeing this on the backend
server!)
FYI: It was a kernel bug.
--
[*] sys4 AG
http://sys4.de, +49
Zitat von Ralf Hildebrandt r...@sys4.de:
* Ralf Hildebrandt r...@sys4.de:
I'd guess you're running out of TCP ports.
I think so too, but it's somewhat unlikely! We're using 10 outbound IP
adresses! In a random fashion (and I'm seeing this on the backend
server!)
FYI: It was a kernel bug.
FYI: It was a kernel bug.
Do you mind sharing the actual technical background. Which kernel
was affected and how?
We didn't track it down to a specific bug, but we finally decided that
our setup using multiple IPs for source and destination was OK and
should work as intended - but it didn't.
Ralf Hildebrandt wrote:
[...]
We already optimized:
snip
net.ipv4.tcp_fin_timeout=5
# down from 30s
net.ipv4.tcp_tw_reuse=1
net.ipv4.tcp_tw_recycle=1
#
http://redis4you.com/articles.php?id=012name=Redis+high+traffic+connection+issue
just a note on enabling tcp_tw_recycle, it is
* brd barra...@tiscali.it:
Ralf Hildebrandt wrote:
[...]
We already optimized:
snip
net.ipv4.tcp_fin_timeout=5
# down from 30s
net.ipv4.tcp_tw_reuse=1
net.ipv4.tcp_tw_recycle=1
#
http://redis4you.com/articles.php?id=012name=Redis+high+traffic+connection+issue
just a
in the logs. We already tried raising the ulimit, the max number of
open files. Once we reach about 25k connections, we're getting the
error above... for all local addresses. It seems as if the system
cannot create any more outgoing connections.
I'd guess you're running out of TCP
After fixing the duplicate compression problem, we're now
encountering
imap-login: Error: proxy(USERNAME): connect(10.x.x.178, 993) failed: Cannot
assign requested address (after 0 secs, local=10.x.x.100)
in the logs. We already tried raising the ulimit, the max number of
open files. Once we
On 16 Oct 2014, at 06:26, Ralf Hildebrandt r...@sys4.de wrote:
After fixing the duplicate compression problem, we're now
encountering
imap-login: Error: proxy(USERNAME): connect(10.x.x.178, 993) failed: Cannot
assign requested address (after 0 secs, local=10.x.x.100)
in the logs. We
