# Nginx: \[emerg\] bind() to \[::\]:80 failed (98: Address already in use)

**URL:** <https://community.letsencrypt.org/t/nginx-emerg-bind-to-80-failed-98-address-already-in-use/52914>\
**Category:** Help\
**Created:** [February 12, 2018, 8:36pm UTC](https://community.letsencrypt.org/t/nginx-emerg-bind-to-80-failed-98-address-already-in-use/52914 "2018-02-12T20:36:51Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![rgrz](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@rgrz](https://community.letsencrypt.org/u/rgrz)\
**Post date:** [February 12, 2018, 7:58pm UTC](https://community.letsencrypt.org/t/nginx-emerg-bind-to-80-failed-98-address-already-in-use/52914/1 "2018-02-12T19:58:57Z")

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Hello there, same thing happened to me.

Sorry in advance I am a newbie with nginx.

I was following instructions [[https://certbot.eff.org/#ubuntuxenial-nginx](https://certbot.eff.org/#ubuntuxenial-nginx)] to install a certificate in nginx, and the command sudo certbot renew --dry-run output the exact same thing.

Could it be that certbot renew has changed the configuration file in /etc/nginx/sites-available/default ?

nginx version: nginx/1.10.3 (Ubuntu)

By the way: I chose the option 2: redirect any http request to https.

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**Author:** ![rgrz](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@rgrz](https://community.letsencrypt.org/u/rgrz)\
**Post date:** [February 12, 2018, 8:05pm UTC](https://community.letsencrypt.org/t/nginx-emerg-bind-to-80-failed-98-address-already-in-use/52914/2 "2018-02-12T20:05:14Z")

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This is the error I’m getting. I can confirm before installing certbot nginx was working fine (out-of-the-box).

$ sudo systemctl status nginx

nginx.service - A high performance web server and a reverse proxy server  
Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)  
Active: failed (Result: exit-code) since Mon 2018-02-12 20:52:53 CET; 7min ago  
Process: 4805 ExecStart=/usr/sbin/nginx -g daemon on; master\_process on; (code=exited, status=1/FAILURE)  
Process: 4800 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master\_process on; (code=exited, status=0/SUCCESS)  
Main PID: 1904 (code=exited, status=0/SUCCESS)

nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)  
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)  
nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)  
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)  
nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)  
nginx: [emerg] still could not bind()  
systemd[1]: nginx.service: Control process exited, code=exited status=1  
systemd[1]: Failed to start A high performance web server and a reverse proxy server.  
systemd[1]: nginx.service: Unit entered failed state.  
systemd[1]: nginx.service: Failed with result ‘exit-code’.

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<div class="post-metadata">

**Author:** ![rgrz](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@rgrz](https://community.letsencrypt.org/u/rgrz)\
**Post date:** [February 12, 2018, 8:36pm UTC](https://community.letsencrypt.org/t/nginx-emerg-bind-to-80-failed-98-address-already-in-use/52914/3 "2018-02-12T20:36:51Z")

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Ok, now this is weird. I am pretty sure nginx service was stopped. And I don’t have apache or anything running on the server that could use port 80… Could it have been that nginx left some resource that kept port 80 busy while certbot reconfigured/restarted the server?

I killed everything running on port 80…

$ sudo fuser -k 80/tcp  
80/tcp: 3488 3489 3490

after that nginx started normally…

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<div class="post-metadata">

**Author:** ![Patches](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/patches/32/17145_2.png) [@Patches](https://community.letsencrypt.org/u/Patches)\
**Post date:** [February 12, 2018, 10:43pm UTC](https://community.letsencrypt.org/t/nginx-emerg-bind-to-80-failed-98-address-already-in-use/52914/4 "2018-02-12T22:43:18Z")

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Hi @rgrz,

I split your question into a different topic because even though you get a similar error it is probably caused by something else, since you are using `--nginx` mode and not `--standalone` mode.

I suspect in your case you just have a different service enabled that is also taking up port 80. Since you already killed it, it’s impossible to tell what it was. If it happens again, you could run `fuser` without the `-k` option to identify the process ID numbers without killing them and then run `pgrep` with those process ID numbers to identify what program is holding the port.

In the meantime, if you share the output of `systemctl list-unit-files` it might reveal a conflicting service.

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<div class="post-metadata">

**Author:** ![jsha](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/jsha/32/12_2.png) [@jsha](https://community.letsencrypt.org/u/jsha)\
**Post date:** [February 12, 2018, 11:59pm UTC](https://community.letsencrypt.org/t/nginx-emerg-bind-to-80-failed-98-address-already-in-use/52914/5 "2018-02-12T23:59:11Z")

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BTW, my favorite incantation for this is:

```auto
fuser -kivn tcp 80

```

`-i` makes it prompt before killing, and `-v` prints the process name in addition to the process id.

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<div class="post-metadata">

**Author:** ![rgrz](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@rgrz](https://community.letsencrypt.org/u/rgrz)\
**Post date:** [February 13, 2018, 10:52am UTC](https://community.letsencrypt.org/t/nginx-emerg-bind-to-80-failed-98-address-already-in-use/52914/6 "2018-02-13T10:52:49Z")

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Thanks for your quick replay, here’s the output of $ systemctl list-unit-files

UNIT FILE STATE  
proc-sys-fs-binfmt\_misc.automount static  
dev-hugepages.mount static  
dev-mqueue.mount static  
proc-sys-fs-binfmt\_misc.mount static  
sys-fs-fuse-connections.mount static  
sys-kernel-config.mount static  
sys-kernel-debug.mount static  
acpid.path enabled  
systemd-ask-password-console.path static  
systemd-ask-password-plymouth.path static  
systemd-ask-password-wall.path static  
systemd-networkd-resolvconf-update.path static  
accounts-daemon.service enabled  
acpid.service disabled  
apport-forward@.service static  
apt-daily-upgrade.service static  
apt-daily.service static  
atd.service enabled  
autovt@.service enabled  
bootlogd.service masked  
bootlogs.service masked  
bootmisc.service masked  
certbot.service static  
checkfs.service masked  
checkroot-bootclean.service masked  
checkroot.service masked  
cloud-config.service enabled  
cloud-final.service enabled  
cloud-init-local.service enabled  
cloud-init.service enabled  
console-getty.service disabled  
console-setup.service static  
console-shell.service disabled  
container-getty@.service static  
cron.service enabled  
cryptdisks-early.service masked  
cryptdisks.service masked  
dbus-org.freedesktop.hostname1.service static  
dbus-org.freedesktop.locale1.service static  
dbus-org.freedesktop.login1.service static  
dbus-org.freedesktop.network1.service disabled  
dbus-org.freedesktop.resolve1.service disabled  
dbus-org.freedesktop.timedate1.service static  
dbus.service static  
debug-shell.service disabled  
dm-event.service disabled  
emergency.service static  
friendly-recovery.service enabled  
fuse.service masked  
getty-static.service static  
getty@.service enabled  
halt.service masked  
hostname.service masked  
hwclock.service masked  
ifup@.service static  
initrd-cleanup.service static  
initrd-parse-etc.service static  
initrd-switch-root.service static  
initrd-udevadm-cleanup-db.service static  
iscsi.service enabled  
iscsid.service enabled  
keyboard-setup.service disabled  
killprocs.service masked  
kmod-static-nodes.service static  
kmod.service static  
lvm2-lvmetad.service disabled  
lvm2-lvmpolld.service disabled  
lvm2-monitor.service enabled  
lvm2-pvscan@.service static  
lvm2.service masked  
lxcfs.service enabled  
lxd-bridge.service static  
lxd-containers.service enabled  
lxd.service indirect  
mdadm-shutdown.service disabled  
module-init-tools.service static  
motd.service masked  
mountall-bootclean.service masked  
mountall.service masked  
mountdevsubfs.service masked  
mountkernfs.service masked  
mountnfs-bootclean.service masked  
mountnfs.service masked  
networking.service enabled  
nginx.service enabled  
open-iscsi.service enabled  
open-vm-tools.service enabled  
plymouth-halt.service static  
plymouth-kexec.service static  
plymouth-log.service static  
plymouth-poweroff.service static  
plymouth-quit-wait.service static  
plymouth-quit.service static  
plymouth-read-write.service static  
plymouth-reboot.service static  
plymouth-start.service static  
plymouth-switch-root.service static  
plymouth.service static  
polkitd.service static  
pollinate.service enabled  
procps.service static  
quotaon.service static  
rc-local.service static  
rc.local.service static  
rc.service masked  
rcS.service masked  
reboot.service masked  
rescue.service static  
resolvconf.service enabled  
rippled.service enabled  
rmnologin.service masked  
rsync.service disabled  
rsyslog.service enabled  
screen-cleanup.service masked  
sendsigs.service masked  
serial-getty@.service disabled  
setvtrgb.service static  
sigpwr-container-shutdown.service static  
single.service masked  
snapd.autoimport.service enabled  
snapd.core-fixup.service enabled  
snapd.refresh.service static  
snapd.service enabled  
snapd.snap-repair.service static  
snapd.system-shutdown.service enabled  
ssh.service enabled  
ssh@.service static  
sshd.service enabled  
stop-bootlogd-single.service masked  
stop-bootlogd.service masked  
syslog.service enabled  
systemd-ask-password-console.service static  
systemd-ask-password-plymouth.service static  
systemd-ask-password-wall.service static  
systemd-backlight@.service static  
systemd-binfmt.service static  
systemd-bootchart.service disabled  
systemd-bus-proxyd.service static  
systemd-exit.service static  
systemd-fsck-root.service static  
systemd-fsck@.service static  
systemd-fsckd.service static  
systemd-halt.service static  
systemd-hibernate-resume@.service static  
systemd-hibernate.service static  
systemd-hostnamed.service static  
systemd-hwdb-update.service static  
systemd-hybrid-sleep.service static  
systemd-initctl.service static  
systemd-journal-flush.service static  
systemd-journald.service static  
systemd-kexec.service static  
systemd-localed.service static  
systemd-logind.service static  
systemd-machine-id-commit.service static  
systemd-modules-load.service static  
systemd-networkd-resolvconf-update.service static  
systemd-networkd-wait-online.service disabled  
systemd-networkd.service disabled  
systemd-poweroff.service static  
systemd-quotacheck.service static  
systemd-random-seed.service static  
systemd-reboot.service static  
systemd-remount-fs.service static  
systemd-resolved.service disabled  
systemd-rfkill.service static  
systemd-suspend.service static  
systemd-sysctl.service static  
systemd-timedated.service static  
systemd-timesyncd.service enabled  
systemd-tmpfiles-clean.service static  
systemd-tmpfiles-setup-dev.service static  
systemd-tmpfiles-setup.service static  
systemd-udev-settle.service static  
systemd-udev-trigger.service static  
systemd-udevd.service static  
systemd-update-utmp-runlevel.service static  
systemd-update-utmp.service static  
systemd-user-sessions.service static  
udev.service static  
ufw.service enabled  
umountfs.service masked  
umountnfs.service masked  
umountroot.service masked  
unattended-upgrades.service enabled  
urandom.service static  
ureadahead-stop.service static  
ureadahead.service enabled  
user@.service static  
uuidd.service indirect  
x11-common.service masked  
-.slice static  
machine.slice static  
system.slice static  
user.slice static  
acpid.socket enabled  
apport-forward.socket enabled  
dbus.socket static  
dm-event.socket enabled  
lvm2-lvmetad.socket enabled  
lvm2-lvmpolld.socket enabled  
lxd.socket enabled  
snapd.socket enabled  
ssh.socket disabled  
syslog.socket static  
systemd-bus-proxyd.socket static  
systemd-fsckd.socket static  
systemd-initctl.socket static  
systemd-journald-audit.socket static  
systemd-journald-dev-log.socket static  
systemd-journald.socket static  
systemd-networkd.socket disabled  
systemd-rfkill.socket static  
systemd-udevd-control.socket static  
systemd-udevd-kernel.socket static  
uuidd.socket enabled  
basic.target static  
bluetooth.target static  
busnames.target static  
cloud-config.target static  
cloud-init.target static  
cryptsetup-pre.target static  
cryptsetup.target static  
ctrl-alt-del.target disabled  
default.target static  
emergency.target static  
exit.target disabled  
final.target static  
getty.target static  
graphical.target static  
halt.target disabled  
hibernate.target static  
hybrid-sleep.target static  
initrd-fs.target static  
initrd-root-fs.target static  
initrd-switch-root.target static  
initrd.target static  
kexec.target disabled  
local-fs-pre.target static  
local-fs.target static  
mail-transport-agent.target static  
multi-user.target static  
network-online.target static  
network-pre.target static  
network.target static  
nss-lookup.target static  
nss-user-lookup.target static  
paths.target static  
poweroff.target disabled  
printer.target static  
reboot.target disabled  
remote-fs-pre.target static  
remote-fs.target enabled  
rescue.target disabled  
rpcbind.target static  
runlevel0.target disabled  
runlevel1.target disabled  
runlevel2.target static  
runlevel3.target static  
runlevel4.target static  
runlevel5.target static  
runlevel6.target disabled  
shutdown.target static  
sigpwr.target static  
sleep.target static  
slices.target static  
smartcard.target static  
sockets.target static  
sound.target static  
suspend.target static  
swap.target static  
sysinit.target static  
system-update.target static  
time-sync.target static  
timers.target static  
umount.target static  
apt-daily-upgrade.timer enabled  
apt-daily.timer enabled  
certbot.timer enabled  
snapd.refresh.timer enabled  
snapd.snap-repair.timer enabled  
systemd-tmpfiles-clean.timer static  
ureadahead-stop.timer static

283 unit files listed.

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<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/letsencrypt/original/3X/c/a/ca6c06ea1ea201324bba7048c6841ce60236468d.png) [@system](https://community.letsencrypt.org/u/system)\
**Post date:** [March 15, 2018, 10:53am UTC](https://community.letsencrypt.org/t/nginx-emerg-bind-to-80-failed-98-address-already-in-use/52914/7 "2018-03-15T10:53:09Z")

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