Public bug reported:
On both xenial and zesty apache and haproxy seem to be able to bind to
the same port:
# netstat -peanut | grep 8776
tcp 0 0 0.0.0.0:8776 0.0.0.0:* LISTEN
0 76856 26190/haproxy
tcp6 0 0 :::8776 :::* LISTEN
0 76749 26254/apache2
tcp6 0 0 :::8776 :::* LISTEN
0 76857 26190/haproxy
I thought this should not be possible?
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-96-generic 4.4.0-96.119
ProcVersionSignature: Ubuntu 4.4.0-96.119-generic 4.4.83
Uname: Linux 4.4.0-96-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Sep 29 11:46 seq
crw-rw---- 1 root audio 116, 33 Sep 29 11:46 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
CRDA: N/A
Date: Fri Sep 29 14:15:26 2017
Ec2AMI: ami-00000193
Ec2AMIManifest: FIXME
Ec2AvailabilityZone: nova
Ec2InstanceType: m1.blue
Ec2Kernel: unavailable
Ec2Ramdisk: unavailable
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: OpenStack Foundation OpenStack Nova
PciMultimedia:
ProcEnviron:
TERM=screen
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-96-generic
root=LABEL=cloudimg-rootfs ro console=tty1 console=ttyS0
RelatedPackageVersions:
linux-restricted-modules-4.4.0-96-generic N/A
linux-backports-modules-4.4.0-96-generic N/A
linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/01/2014
dmi.bios.vendor: SeaBIOS
dmi.bios.version: 1.10.1-1ubuntu1~cloud0
dmi.chassis.type: 1
dmi.chassis.vendor: QEMU
dmi.chassis.version: pc-i440fx-zesty
dmi.modalias:
dmi:bvnSeaBIOS:bvr1.10.1-1ubuntu1~cloud0:bd04/01/2014:svnOpenStackFoundation:pnOpenStackNova:pvr15.0.2:cvnQEMU:ct1:cvrpc-i440fx-zesty:
dmi.product.name: OpenStack Nova
dmi.product.version: 15.0.2
dmi.sys.vendor: OpenStack Foundation
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug ec2-images uosci xenial
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https://bugs.launchpad.net/bugs/1720378
Title:
Two processes can bind to the same port
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