From nobody Sun Mar 13 00:17:07 2022 X-Original-To: freebsd-net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 2A9D91A091BF for ; Sun, 13 Mar 2022 00:17:15 +0000 (UTC) (envelope-from grembo@freebsd.org) Received: from mail.evolve.de (mail.evolve.de [213.239.217.29]) (using TLSv1.3 with cipher TLS_CHACHA20_POLY1305_SHA256 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA512 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mail.evolve.de", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4KGKx52s6Sz4dDG; Sun, 13 Mar 2022 00:17:13 +0000 (UTC) (envelope-from grembo@freebsd.org) Received: by mail.evolve.de (OpenSMTPD) with ESMTP id 47babaa7; Sun, 13 Mar 2022 00:17:09 +0000 (UTC) Received: by mail.evolve.de (OpenSMTPD) with ESMTPSA id 41738397 (TLSv1.3:AEAD-CHACHA20-POLY1305-SHA256:256:NO); Sun, 13 Mar 2022 00:17:08 +0000 (UTC) Content-Type: multipart/alternative; boundary=Apple-Mail-317A3AA9-2171-46E7-B9FB-67F609469C9A Content-Transfer-Encoding: 7bit List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org Mime-Version: 1.0 (1.0) Subject: Re: epair and vnet jail loose connection. From: Michael Gmelin In-Reply-To: <94B8885D-F63F-40C3-9E7E-158CC252FF9A@FreeBSD.org> Date: Sun, 13 Mar 2022 01:17:07 +0100 Cc: Johan Hendriks , freebsd-net@freebsd.org, ">> \\\\\\\\Patrick M. Hausen\\\\" Message-Id: <95793CDF-6E72-4FAB-8BF5-F2E67D3F69CD@freebsd.org> References: <94B8885D-F63F-40C3-9E7E-158CC252FF9A@FreeBSD.org> To: Kristof Provost X-Mailer: iPhone Mail (19D52) X-Rspamd-Queue-Id: 4KGKx52s6Sz4dDG X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=softfail (mx1.freebsd.org: 213.239.217.29 is neither permitted nor denied by domain of grembo@freebsd.org) smtp.mailfrom=grembo@freebsd.org X-Spamd-Result: default: False [0.92 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; MV_CASE(0.50)[]; R_SPF_SOFTFAIL(0.00)[~all:c]; RCVD_COUNT_THREE(0.00)[3]; NEURAL_HAM_SHORT(-1.00)[-1.000]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+,1:~,2:~]; ASN(0.00)[asn:24940, ipnet:213.239.192.0/18, country:DE]; MID_RHS_MATCH_FROM(0.00)[]; R_PARTS_DIFFER(0.74)[86.8%]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.99)[-0.992]; FREEFALL_USER(0.00)[grembo]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; TAGGED_RCPT(0.00)[]; MIME_GOOD(-0.10)[multipart/alternative]; DMARC_NA(0.00)[freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_SPAM_LONG(0.08)[0.077]; MIME_HTML_ONLY(0.20)[]; MLMMJ_DEST(0.00)[freebsd-net]; FREEMAIL_CC(0.00)[gmail.com,freebsd.org,punkt.de]; RCVD_TLS_ALL(0.00)[]; SUSPICIOUS_RECIPS(1.50)[] X-ThisMailContainsUnwantedMimeParts: N --Apple-Mail-317A3AA9-2171-46E7-B9FB-67F609469C9A Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable I also gave it another go (this time with multiple CPUs assigned to the vm),= still works just fine - so I think we would need more details about the set= up. Would it make sense to share our test setups, so Johan can try to reproduce w= ith them? -m > On 13. Mar 2022, at 00:48, Kristof Provost wrote: >=20 > =EF=BB=BF > I=E2=80=99m still failing to reproduce. >=20 > Is pf absolutely required to trigger the issue? Is haproxy (i.e. can you t= rigger it with iperf)?=20 > Is the bridge strictly required? >=20 > Kristof >=20 > On 12 Mar 2022, at 8:18, Johan Hendriks wrote:=20 > For me this minimal setup let me see the drop off of the network from the h= aproxy server. >=20 > 2 jails, one with haproxy, one with nginx which is using the following htm= l file to be served. >=20 > > > > Page Title > > >=20 >

My First Heading

>

My first paragraph.

>=20 > > >=20 > =46rom a remote machine i do a hey -h2 -n 10 -c 10 -z 300s https://wp.tes= t.nl > Then a ping on the jailhost to the haproxy shows the following >=20 > [ /] > ping 10.233.185.20 > PING 10.233.185.20 (10.233.185.20): 56 data bytes > 64 bytes from 10.233.185.20: icmp_seq=3D0 ttl=3D64 time=3D0.054 ms > 64 bytes from 10.233.185.20: icmp_seq=3D1 ttl=3D64 time=3D0.050 ms > 64 bytes from 10.233.185.20: icmp_seq=3D2 ttl=3D64 time=3D0.041 ms > > 64 bytes from 10.233.185.20: icmp_seq=3D169 ttl=3D64 time=3D0.050 ms > 64 bytes from 10.233.185.20: icmp_seq=3D170 ttl=3D64 time=3D0.154 ms > 64 bytes from 10.233.185.20: icmp_seq=3D171 ttl=3D64 time=3D0.054 ms > 64 bytes from 10.233.185.20: icmp_seq=3D172 ttl=3D64 time=3D0.039 ms > 64 bytes from 10.233.185.20: icmp_seq=3D173 ttl=3D64 time=3D0.160 ms > 64 bytes from 10.233.185.20: icmp_seq=3D174 ttl=3D64 time=3D0.045 ms > ^C > --- 10.233.185.20 ping statistics --- > 335 packets transmitted, 175 packets received, 47.8% packet loss > round-trip min/avg/max/stddev =3D 0.037/0.070/0.251/0.040 ms >=20 >=20 > ifconfig > vtnet0: flags=3D8963 metri= c 0 mtu 1500 > options=3D4c00bb > ether 56:16:e9:80:5e:41 > inet 87.233.191.146 netmask 0xfffffff0 broadcast 87.233.191.159 > inet 87.233.191.156 netmask 0xffffffff broadcast 87.233.191.156 > inet 87.233.191.155 netmask 0xffffffff broadcast 87.233.191.155 > inet 87.233.191.154 netmask 0xffffffff broadcast 87.233.191.154 > media: Ethernet autoselect (10Gbase-T ) > status: active > nd6 options=3D29 > vtnet1: flags=3D8863 metric 0 mtu 1= 500 > options=3D4c07bb > ether 56:16:2c:64:32:35 > media: Ethernet autoselect (10Gbase-T ) > status: active > nd6 options=3D29 > lo0: flags=3D8049 metric 0 mtu 16384 > options=3D680003 > inet6 ::1 prefixlen 128 > inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3 > inet 127.0.0.1 netmask 0xff000000 > groups: lo > nd6 options=3D21 > bridge0: flags=3D8843 metric 0 mtu= 1500 > ether 58:9c:fc:10:ff:82 > inet 10.233.185.1 netmask 0xffffff00 broadcast 10.233.185.255 > id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 > maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200 > root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 > member: epair20a flags=3D143 > ifmaxaddr 0 port 7 priority 128 path cost 2000 > member: epair18a flags=3D143 > ifmaxaddr 0 port 15 priority 128 path cost 2000 > groups: bridge > nd6 options=3D9 > bridge1: flags=3D8843 metric 0 mtu= 1500 > ether 58:9c:fc:10:d9:1a > id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 > maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200 > root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 > member: vtnet0 flags=3D143 > ifmaxaddr 0 port 1 priority 128 path cost 2000 > groups: bridge > nd6 options=3D9 > pflog0: flags=3D141 metric 0 mtu 33160 > groups: pflog > epair18a: flags=3D8963 met= ric 0 mtu 1500 > description: jail_web01 > options=3D8 > ether 02:77:ea:19:c7:0a > groups: epair > media: Ethernet 10Gbase-T (10Gbase-T ) > status: active > nd6 options=3D29 > epair20a: flags=3D8963 met= ric 0 mtu 1500 > description: jail_haproxy > options=3D8 > ether 02:9b:93:8c:59:0a > groups: epair > media: Ethernet 10Gbase-T (10Gbase-T ) > status: active > nd6 options=3D29 >=20 > jail.conf >=20 > # Global settings applied to all jails. > $domain =3D "test.nl"; >=20 > exec.start =3D "/bin/sh /etc/rc"; > exec.stop =3D "/bin/sh /etc/rc.shutdown"; > exec.clean; >=20 > mount.fstab =3D "/storage/jails/$name.fstab"; >=20 > exec.system_user =3D "root"; > exec.jail_user =3D "root"; > mount.devfs; > sysvshm=3D"new"; > sysvsem=3D"new"; > allow.raw_sockets; > allow.set_hostname =3D 0; > allow.sysvipc; > enforce_statfs =3D "2"; > devfs_ruleset =3D "11"; >=20 > path =3D "/storage/jails/${name}"; > host.hostname =3D "${name}.${domain}"; >=20 >=20 > # Networking > vnet; > vnet.interface =3D "vnet0"; >=20 > # Commands to run on host before jail is created > exec.prestart =3D "ifconfig epair${ip} create up description jail_${nam= e}"; > exec.prestart +=3D "ifconfig epair${ip}a up"; > exec.prestart +=3D "ifconfig bridge0 addm epair${ip}a up"; > exec.created =3D "ifconfig epair${ip}b name vnet0"; >=20 > # Commands to run in jail after it is created > exec.start +=3D "/bin/sh /etc/rc"; >=20 > # commands to run in jail when jail is stopped > exec.stop =3D "/bin/sh /etc/rc.shutdown"; >=20 > # Commands to run on host when jail is stopped > exec.poststop =3D "ifconfig bridge0 deletem epair${ip}a"; > exec.poststop +=3D "ifconfig epair${ip}a destroy"; > persist; >=20 > web01 { > $ip =3D 18; > } >=20 > haproxy { > $ip =3D 20; > mount.fstab =3D ""; > path =3D "/storage/jails/${name}"; > } >=20 > pf.conf >=20 > ####################################################################### > ext_if=3D"vtnet0" > table persist > table persist > table persist file "/usr/local/etc/pf/ssh-trusted" > table persist file "/usr/local/etc/pf/custom-block" > table { 10.233.185.0/24, 192.168.10.0/24 } >=20 > icmp_types =3D "echoreq" > junk_ports=3D"{ 135,137,138,139,445,68,67,3222,17500 }" >=20 > # Log interface > set loginterface $ext_if >=20 > # Set limits > set limit { states 40000, frags 20000, src-nodes 20000 } >=20 > scrub on $ext_if all fragment reassemble no-df random-id >=20 > # ---- Nat jails to the web > binat on $ext_if from 10.233.185.15/32 to !10.233.185.0/24 -> 87.233.191.1= 56/32 # saltmaste > binat on $ext_if from 10.233.185.20/32 to !10.233.185.0/24 -> 87.233.191.1= 55/32 # haproxy > binat on $ext_if from 10.233.185.22/32 to !10.233.185.0/24 -> 87.233.191.1= 54/32 # web-comb >=20 > nat on $ext_if from to any -> ($ext_if:0) >=20 > # ---- First rule obligatory "Pass all on loopback" > pass quick on lo0 all > pass quick on bridge0 all > pass quick on bridge1 all >=20 > # ---- Block TOR exit addresses > block quick proto { tcp, udp } from to $ext_if >=20 > # ---- Second rule "Block all in and pass all out" > block in log all > pass out all keep state >=20 > # IPv6 pass in/out all IPv6 ICMP traffic > pass in quick proto icmp6 all >=20 > # Pass all lo0 > set skip on lo0 >=20 > ############### FIREWALL ############################################### > # ---- Block custom ip's and logs > block quick proto { tcp, udp } from to $ext_if >=20 > # ---- Jail poorten > pass in quick on { $ext_if } proto tcp from any to 10.233.185.22 port { sm= tp 80 443 993 995 1956 } keep state > pass in quick on { $ext_if } proto tcp from any to 10.233.185.20 port { sm= tp 80 443 993 995 1956 } keep state > pass in quick on { $ext_if } proto tcp from any to 10.233.185.15 port { 45= 05 4506 } keep state >=20 > # ---- Allow ICMP > pass in inet proto icmp all icmp-type $icmp_types keep state > pass out inet proto icmp all icmp-type $icmp_types keep state >=20 > pass in quick on $ext_if inet proto tcp from any to $ext_if port { 80, 443= } flags S/SA keep state > pass in quick on $ext_if inet proto tcp from to $ext_if port= { 4505 4506 } flags S/SA keep state > block log quick from > pass quick proto tcp from to $ext_if port ssh flags S/SA kee= p state >=20 > This is as minimal i can get it. >=20 > Hope this helps. > regards, > Johan Hendriks >=20 >=20 > Op za 12 mrt. 2022 om 02:10 schreef Kristof Provost : >> On 11 Mar 2022, at 18:55, Michael Gmelin wrote: >> >> On 12. Mar 2022, at 01:21, Kristof Provost wrote: >> >> >> >> =EF=BB=BFOn 11 Mar 2022, at 17:44, Johan Hendriks wrote: >> >>>> On 09/03/2022 20:55, Johan Hendriks wrote: >> >>>> The problem: >> >>>> I have a FreeBSD 14 machine and a FreeBSD 13-stable machine, both ru= nning the same jails just to test the workings. >> >>>> >> >>>> The jails that are running are a salt master, a haproxy jail, 2 web= servers, 2 varnish servers, 2 php jails one for php8.0 and one with 8.1. All= the jails are connected to bridge0 and all the jails use vnet. >> >>>> >> >>>> I believe this worked on an older 14-HEAD machine, but i did not do a= lot with it back then, and when i started testing again and after updating t= he OS i noticed that one of the varnish jails lost it's network connection a= fter running for a few hours. I thought it was just something on HEAD so nev= er really looked at it. But later on when i start using the jails again and t= esting a test wordpress site i noticed that with a simple load test my hapro= xy jail within one minute looses it's network connection. I see nothing in t= he logs, on the host and on the jail. >> >>>> =46rom the jail i can not ping the other jails or the IP adres of th= e bridge. I can however ping the jails own IP adres. =46rom the host i can a= lso not ping the haproxy jail IP adres. If i start a tcpdump on the epaira i= nterface from the haproxy jail i do see the packets arrive but not in the ja= il. >> >>>> >> >>>> I used ZFS to send all the jails to a 13-STABLE machine and copied o= ver the jail.conf file as well as the pf.conf file and i saw the same behavi= or. >> >>>> >> >>>> Then i tried to use 13.0-RELEASE-p7 and on that machine i do not see= this happening. There i can stress test the machine for 10 minutes without a= problem but on 14-HEAD and 13-STABLE within a minute the jail's network con= nection fails and only a restart of the jail brings it back online to exhibi= t the same behavior if i start a simple load test which it should handle nic= ely. >> >>>> >> >>>> One of the jail hosts is running under VMWARE and the other is runni= ng under Ubuntu with KVM. The 13.0-RELEASE-p7 jail host is running under Ubu= ntu with KVM >> >>>> >> >>>> Thank you for your time. >> >>>> regards >> >>>> Johan >> >>>> >> >>> I did some bisecting and the latest commit that works on FreeBSD 13-S= table is 009a56b2e >> >>> Then the commit 2e0bee4c7 if_epair: implement fanout and above is sh= owing the symptoms described above. >> >>> >> >> Interestingly I cannot reproduce stalls in simple epair setups. >> >> It would be useful if you could reduce the setup with the problem into= a minimal configuration so we can figure out what other factors are involve= d. >> > >> > If there are clear instructions on how to reproduce, I=E2=80=99m happy t= o help experimenting (I=E2=80=99m relying heavily on epair at this point). >> > >> > @Kristof: Did you try on bare metal or on vms? >> > >> Both. >>=20 >> Kristof >=20 --Apple-Mail-317A3AA9-2171-46E7-B9FB-67F609469C9A Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
I a= lso gave it another go (this time with multiple CPUs assigned to the vm), st= ill works just fine - so I think we would need more details about the setup.=

Would it make sense to sha= re our test setups, so Johan can try to reproduce with them?

-m

On 13. Mar 2022, at 00:48, Kristof Provost <kp@freebsd.org>= ; wrote:

=EF=BB=BF

I=E2=80=99m still failing to reproduce.<= /p>

Is pf absolutely required to trigger the issue? Is haproxy (= i.e. can you trigger it with iperf)?
Is the bridge strictly required?

Kristof

On 12 Mar 2022, at 8:18, Johan Hendriks wrote:

For me this minimal setup let me see the drop off of the ne= twork from the haproxy server.

2 jails, one with haproxy, one with nginx which is using the following html f= ile to be served.

<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>

<h1>My First Heading</h1>
<p>My first paragraph.</p>

</body>
</html>

=46rom a remote machine i do a  hey -h2 -n 10 -c 10 -z 300s https://wp.test.nl
Then a ping on the jailhost to the haproxy shows the following

[ /] > ping 10.233.185.20
PING 10.233.185.20 (10.233.185.20): 56 data bytes
64 bytes from 10.233.185.20: icmp_seq=3D= 0 ttl=3D64 time=3D0.054 ms
64 bytes from 10.233.185.20: icmp_seq=3D= 1 ttl=3D64 time=3D0.050 ms
64 bytes from 10.233.185.20: icmp_seq=3D= 2 ttl=3D64 time=3D0.041 ms
<SNIP>
64 bytes from 10.233.185.20: icmp_seq=3D= 169 ttl=3D64 time=3D0.050 ms
64 bytes from 10.233.185.20: icmp_seq=3D= 170 ttl=3D64 time=3D0.154 ms
64 bytes from 10.233.185.20: icmp_seq=3D= 171 ttl=3D64 time=3D0.054 ms
64 bytes from 10.233.185.20: icmp_seq=3D= 172 ttl=3D64 time=3D0.039 ms
64 bytes from 10.233.185.20: icmp_seq=3D= 173 ttl=3D64 time=3D0.160 ms
64 bytes from 10.233.185.20: icmp_seq=3D= 174 ttl=3D64 time=3D0.045 ms
^C
--- 10.233.185.20 ping statistics ---
335 packets transmitted, 175 packets received, 47.8% packet loss
round-trip min/avg/max/stddev =3D 0.037/0.070/0.251/0.040 ms


ifconfig
vtnet0: flags=3D8963<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> m= etric 0 mtu 1500
options=3D4c00bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWC= SUM,VLAN_HWTSO,LINKSTATE,TXCSUM_IPV6>
ether 56:16:e9:80:5e:41
inet 87.233.191.146 netmask 0xfffffff0 broadcast 87.233.191.159
inet 87.233.191.156 netmask 0xffffffff broadcast 87.233.191.156
inet 87.233.191.155 netmask 0xffffffff broadcast 87.233.191.155
inet 87.233.191.154 netmask 0xffffffff broadcast 87.233.191.154
media: Ethernet autoselect (10Gbase-T <full-duplex>)
status: active
nd6 options=3D29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
vtnet1: flags=3D8863<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 m= tu 1500
options=3D4c07bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWC= SUM,TSO4,TSO6,LRO,VLAN_HWTSO,LINKSTATE,TXCSUM_IPV6>
ether 56:16:2c:64:32:35
media: Ethernet autoselect (10Gbase-T <full-duplex>)
status: active
nd6 options=3D29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
lo0: flags=3D8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 options=3D680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
inet 127.0.0.1 netmask 0xff000000
groups: lo
nd6 options=3D21<PERFORMNUD,AUTO_LINKLOCAL>
bridge0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0= mtu 1500
ether 58:9c:fc:10:ff:82
inet 10.233.185.1 netmask 0xffffff00 broadcast 10.233.185.255
id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
member: epair20a flags=3D143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
       ifmaxaddr 0 port 7 priority 128 path cost 2000 member: epair18a flags=3D143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
       ifmaxaddr 0 port 15 priority 128 path cost 2000 groups: bridge
nd6 options=3D9<PERFORMNUD,IFDISABLED>
bridge1: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0= mtu 1500
ether 58:9c:fc:10:d9:1a
id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
member: vtnet0 flags=3D143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
       ifmaxaddr 0 port 1 priority 128 path cost 2000 groups: bridge
nd6 options=3D9<PERFORMNUD,IFDISABLED>
pflog0: flags=3D141<UP,RUNNING,PROMISC> metric 0 mtu 33160
groups: pflog
epair18a: flags=3D8963<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST>= metric 0 mtu 1500
description: jail_web01
options=3D8<VLAN_MTU>
ether 02:77:ea:19:c7:0a
groups: epair
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
nd6 options=3D29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
epair20a: flags=3D8963<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST>= metric 0 mtu 1500
description: jail_haproxy
options=3D8<VLAN_MTU>
ether 02:9b:93:8c:59:0a
groups: epair
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
nd6 options=3D29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

jail.conf

# Global settings applied to all jails.
$domain =3D "test.nl";

exec.start =3D "/bin/sh /etc/rc";
exec.stop =3D "/bin/sh /etc/rc.shutdown";
exec.clean;

mount.fstab =3D "/storage/jails/$name.fstab";

exec.system_user  =3D "root";
exec.jail_user    =3D "root";
mount.devfs;
sysvshm=3D"new";
sysvsem=3D"new";
allow.raw_sockets;
allow.set_hostname =3D 0;
allow.sysvipc;
enforce_statfs =3D "2";
devfs_ruleset     =3D "11";

path =3D "/storage/jails/${name}";
host.hostname =3D "${name}.${domain}";


# Networking
vnet;
vnet.interface    =3D "vnet0";

  # Commands to run on host before jail is created
  exec.prestart  =3D "ifconfig epair${ip} create up description ja= il_${name}";
  exec.prestart  +=3D "ifconfig epair${ip}a up";
  exec.prestart  +=3D "ifconfig bridge0 addm epair${ip}a up";
  exec.created   =3D "ifconfig epair${ip}b name vnet0";

  # Commands to run in jail after it is created
  exec.start  +=3D "/bin/sh /etc/rc";

  # commands to run in jail when jail is stopped
  exec.stop  =3D "/bin/sh /etc/rc.shutdown";

  # Commands to run on host when jail is stopped
  exec.poststop  =3D "ifconfig bridge0 deletem epair${ip}a";
  exec.poststop  +=3D "ifconfig epair${ip}a destroy";
  persist;

web01 {
    $ip =3D 18;
}

haproxy {
    $ip =3D 20;
    mount.fstab =3D "";
    path =3D "/storage/jails/${name}";
}

pf.conf

#######################################################################
ext_if=3D"vtnet0"
table <bruteforcers> persist
table <torlist> persist
table <ssh-trusted> persist file "/usr/local/etc/pf/ssh-trusted"
table <custom-block> persist file "/usr/local/etc/pf/custom-block"
= table <jailnetworks> { 10.233.185.0= /24, 192.168.10.0/24 }

icmp_types =3D "echoreq"
junk_ports=3D"{ 135,137,138,139,445,68,67,3222,17500 }"

# Log interface
set loginterface $ext_if

# Set limits
set limit { states 40000, frags 20000, src-nodes 20000 }

scrub on $ext_if all fragment reassemble no-df random-id

# ---- Nat jails to the web
binat on $ext_if from 10.233.185.15/32 to !10.233.185.0/24 -> 87.233.191.156/32 # saltmaste
binat on $ext_if from 10.233.185.20/32 to !10.233.185.0/24 -> 87.233.191.155/32 # haproxy
binat on $ext_if from 10.233.185.22/32 to !10.233.185.0/24 -> 87.233.191.154/32 # web-comb

nat on $ext_if from <jailnetworks> to any -> ($ext_if:0)

# ---- First rule obligatory "Pass all on loopback"
pass quick on lo0 all
pass quick on bridge0 all
pass quick on bridge1 all

# ---- Block TOR exit addresses
block quick proto { tcp, udp } from <torlist> to $ext_if

# ---- Second rule "Block all in and pass all out"
block in log all
pass out all keep state

# IPv6 pass in/out all IPv6 ICMP traffic
pass in quick proto icmp6 all

# Pass all lo0
set skip on lo0

############### FIREWALL ###############################################
= # ---- Block custom ip's and logs
block quick proto { tcp, udp } from <custom-block> to $ext_if

# ---- Jail poorten
pass in quick on { $ext_if } proto tcp from any to 10.233.185.22 port { smtp= 80 443 993 995 1956 } keep state
pass in quick on { $ext_if } proto tcp from any to 10.233.185.20 port { smtp= 80 443 993 995 1956 } keep state
pass in quick on { $ext_if } proto tcp from any to 10.233.185.15 port { 4505= 4506 } keep state

# ---- Allow ICMP
pass in inet proto icmp all icmp-type $icmp_types keep state
pass out inet proto icmp all icmp-type $icmp_types keep state

pass in quick on $ext_if inet proto tcp from any to $ext_if port { 80, 443 }= flags S/SA keep state
pass in quick on $ext_if inet proto tcp from <ssh-trusted> to $ext_if p= ort { 4505 4506 } flags S/SA keep state
block log quick from <bruteforcers>
pass quick proto tcp from <ssh-trusted> to $ext_if port ssh flags S/SA= keep state

This is as minimal i can get it.

Hope this helps.
regards,
Johan Hendriks


Op za 12 mrt. 2022 om 02:10 schreef Kr= istof Provost <kp@freebsd.org>:<= br>
On 11 Mar 2022, at 18:55, M= ichael Gmelin wrote:
>> On 12. Mar 2022, at 01:21, Kristof Provost <kp@freebsd.org> wrote:
>>
>> =EF=BB=BFOn 11 Mar 2022, at 17:44, Johan Hendriks wrote:
>>>> On 09/03/2022 20:55, Johan Hendriks wrote:
>>>> The problem:
>>>> I have a FreeBSD 14 machine and a FreeBSD 13-stable machine= , both running the same jails just to test the workings.
>>>>
>>>> The jails that are running are a salt master, a haproxy&nbs= p; jail, 2 webservers, 2 varnish servers, 2 php jails one for php8.0 and one= with 8.1. All the jails are connected to bridge0 and all the jails use vnet= .
>>>>
>>>> I believe this worked on an older 14-HEAD machine, but i di= d not do a lot with it back then, and when i started testing again and after= updating the OS i noticed that one of the varnish jails lost it's network c= onnection after running for a few hours. I thought it was just something on H= EAD so never really looked at it. But later on when i start using the jails a= gain and testing a test wordpress site i noticed that with a simple load tes= t my haproxy jail within one minute looses it's network connection. I see no= thing in the logs, on the host and on the jail.
>>>> =46rom the jail i can not ping the other jails or the IP ad= res of the bridge. I can however ping the jails own IP adres. =46rom the hos= t i can also not ping the haproxy jail IP adres. If i start a tcpdump on the= epaira interface from the haproxy jail i do see the packets arrive but not i= n the jail.
>>>>
>>>> I used ZFS to send all the jails to a 13-STABLE machine and= copied over the jail.conf file as well as the pf.conf file and i saw the sa= me behavior.
>>>>
>>>> Then i tried to use 13.0-RELEASE-p7 and on that machine i d= o not see this happening. There i can stress test the machine for 10 minutes= without a problem but on 14-HEAD and 13-STABLE within a minute the jail's n= etwork connection fails and only a restart of the jail brings it back online= to exhibit the same behavior if i start a simple load test which it should h= andle nicely.
>>>>
>>>> One of the jail hosts is running under VMWARE and the other= is running under Ubuntu with KVM. The 13.0-RELEASE-p7 jail host is running u= nder Ubuntu with KVM
>>>>
>>>> Thank you for your time.
>>>> regards
>>>> Johan
>>>>
>>> I did some bisecting and the latest commit that works on FreeBS= D 13-Stable is 009a56b2e
>>> Then the commit 2e0bee4c7  if_epair: implement fanout and a= bove is showing the symptoms described above.
>>>
>> Interestingly I cannot reproduce stalls in simple epair setups.
= >> It would be useful if you could reduce the setup with the problem i= nto a minimal configuration so we can figure out what other factors are invo= lved.
>
> If there are clear instructions on how to reproduce, I=E2=80=99m happy t= o help experimenting (I=E2=80=99m relying heavily on epair at this point). >
> @Kristof: Did you try on bare metal or on vms?
>
Both.

Kristof
= --Apple-Mail-317A3AA9-2171-46E7-B9FB-67F609469C9A--