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问题:
I got a problem which I have been trying to fix for a few days now and I don't know what to do, have been looking for answers but all of those I found didn't help me.
I am kinda new here and I really hope that someone can help me.
You can tell me which informations I need to give in hope for finding a solution.
$ systemctl status nginx.service
nginx.service - Startup script for nginx service
Loaded: loaded (/usr/lib/systemd/system/nginx.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Tue 2016-03-08 13:23:35 GMT; 2min 20s ago
Mar 08 13:23:33 startdedicated.com nginx[8315]: nginx: [emerg] bind() to ------------ f...e)
Mar 08 13:23:33 startdedicated.com nginx[8315]: nginx: [emerg] bind() to ----- f...e)
Mar 08 13:23:34 startdedicated.com nginx[8315]: nginx: [emerg] bind() to ----- f...e)
Mar 08 13:23:34 startdedicated.com nginx[8315]: nginx: [emerg] bind() to ----- f...e)
Mar 08 13:23:35 startdedicated.com nginx[8315]: nginx: [emerg] bind() to ----- f...e)
Mar 08 13:23:35 .startdedicated.com nginx[8315]: nginx: [emerg] still could not bind()
Mar 08 13:23:35 startdedicated.com systemd[1]: nginx.service: control process exited, code=...=1
Mar 08 13:23:35 startdedicated.com systemd[1]: Failed to start Startup script for nginx service.
Mar 08 13:23:35 startdedicated.com systemd[1]: Unit nginx.service entered failed state.
Mar 08 13:23:35 startdedicated.com systemd[1]: nginx.service failed.
回答1:
Try to run the following two commands:
sudo fuser -k 80/tcp
sudo fuser -k 443/tcp
Then execute
sudo service nginx restart
If that worked, your hosting provider might be installing Apache on your server by default during a fresh install, so keep reading for a more permenant fix. If that didn't work, keep reading to identify the issue.
Run nginx -t and if it doesn't return anything, I would verify Nginx error log. By default, it should be located in /var/log/nginx/error.log.
You can open it with any text editor:
sudo nano /var/log/nginx/error.log
Can you find something suspicious there?
The second log you can check is the following
sudo nano /var/log/syslog
When I had this issue, it was because my hosting provider was automatically installing Apache during a clean install. It was blocking port 80.
When I executed sudo nano /var/log/nginx/error.log I got the following as the error log:
2018/08/04 06:17:33 [emerg] 634#0: bind() to 0.0.0.0:80 failed (98: Address already in use)
2018/08/04 06:17:33 [emerg] 634#0: bind() to [::]:80 failed (98: Address already in use)
2018/08/04 06:17:33 [emerg] 634#0: bind() to 0.0.0.0:80 failed (98: Address already in use)
What the above error is telling is that it was not able to bind nginx to port 80 because it was already in use.
To fix this, you need to run the following:
yum install net-tools
sudo netstat -tulpn
When you execute the above you will get something like the following:
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1762/httpd
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1224/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1528/sendmail:acce
tcp6 0 0 :::22 :::* LISTEN 1224/sshd
You can see that port 80 is blocked by httpd (Apache). This could also be port 443 if you are using SSL.
Get the PID of the process that uses port 80 or 443. And send the kill command changing the <PID> value:
sudo kill -2 <PID>
Note in my example the PID value of Apache was 1762 so I would execute sudo kill -2 1762
Aternatively you can execute the following:
sudo fuser -k 80/tcp
sudo fuser -k 443/tcp
Now that port 80 or 443 is clear, you can start Nginx by running the following:
sudo service nginx restart
It is also advisable to remove whatever was previously blocking port 80 & 443. This will avoid any conflict in the future. Since Apache (httpd) was blocking my ports I removed it by running the following:
yum remove httpd httpd-devel httpd-manual httpd-tools mod_auth_kerb mod_auth_mysql mod_auth_pgsql mod_authz_ldap mod_dav_svn mod_dnssd mod_nss mod_perl mod_revocator mod_ssl mod_wsgi
Hope this helps.
回答2:
May come in handy to check syntax of Nginx's configuration files by running:
nginx -t -c /etc/nginx/nginx.conf
回答3:
In my case, it's because of apache server is running somehow. So I stop apache then restart nginx. Work like a charm!
sudo /etc/init.d/apache2 stop
sudo systemctl restart nginx
回答4:
Try to debug with command:
$ service nginx configtest
Which outputs something like:
Testing nginx configuration: nginx: [emerg] unknown directive "stub_status" in /etc/nginx/sites-enabled/nginx_status:11
nginx: configuration file /etc/nginx/nginx.conf test failed
And fix those warnings
Then restart nginx
回答5:
When something cannot bind to a port, it's 5% because it's not started by root (sticky suid bit, sudo) and 94% because another application is already bound to that port.
Make sure nginx is really shutdown and you don't try to start it twice by accident.
Make sure you don't have Apache or other services running that use port 80.
Utilize netstat -a | grep tcp to find out more.
回答6:
change the port may help as 80 port is already using somewhere
vi /etc/nginx/sites-available/default
Change the port:
listen 8080 default_server;
listen [::]:8080 default_server;
And then restart the nginx server
nginx -t
service nginx restart
回答7:
The cause of the issue is this, I already had Apache web server installed and actively listening on port 80 on my local machine.
Apache and Nginx are the two major open-source high-performance web servers capable of handling diverse workloads to satisfy the needs of modern web demands. However, Apache serves primarily as a HTTP server whereas Nginx is a high-performance asynchronous web server and reverse proxy server.
The inability of Nginx to start was because Apache was already listening on port 80 as its default port, which is also the default port for Nginx.
One quick workaround would be to stop Apache server by running the command below
systemctl stop apache2
systemctl status apache2
And then starting up Nginx server by running the command below
systemctl stop nginx
systemctl status nginx
However, this same issue will arise again when we try to start Apache server again, since they both use port 80 as their default port.
Here's how I fixed it:
Run the command below to open the default configuration file of Nginx in Nano editor
sudo nano /etc/nginx/sites-available/default
When the file opens in Nano editor, scroll down and change the default server port to any port of your choice. For me, I chose to change it to port 85
# Default server configuration
#
server {
listen 85 default_server;
listen [::]:85 default_server;
Also, scroll down and change the virtual host port to any port of your choice. For me, I also chose to change it to port 85
# Virtual Host configuration for example.com
#
# You can move that to a different file under sites-available/ and symlink that
# to sites-enabled/ to enable it.
#
# server {
# listen 85;
# listen [::]:85;
Then save and exit the file by pressing on your keyboard:
Ctrl + S
Ctrl + X
You may still be prompted to press Y on your keyboard to save your changes.
Finally, confirm that your configuration is correct and restart the Nginx server:
sudo nginx -t
sudo systemctl restart nginx
You can now navigate to localhost:nginx-port (localhost:85) on your browser to confirm the changes.
Displaying the default Nginx start page
If you want the default Nginx start page to show when you navigate to localhost:nginx-port (localhost:85) on your browser, then follow these steps:
Examine the directory /var/www/html/ which is the default root directory for both Apache and Nginx by listing its contents:
cd ~
ls /var/www/html/
You will 2 files listed in the directory:
index.html # Apache default start page
index.nginx-debian.html # Nginx default start page
Run the command below to open the default configuration file of Nginx in Nano editor:
cd ~
sudo nano /etc/nginx/sites-available/default
Change the order of the index files in the root directory from this:
root /var/www/html;
# Add index.php to the list if you are using PHP
index index.html index.htm index.nginx-debian.html;
to this (putting the default Nginx start page - index.nginx-debian.html in the 2nd position immediately after index):
root /var/www/html;
# Add index.php to the list if you are using PHP
index index.nginx-debian.html index.html index.htm;
Then save and exit the file by pressing on your keyboard:
Ctrl + S
Ctrl + X
You may still be prompted to press Y on your keyboard to save your changes.
Finally, confirm that your configuration is correct and restart the Nginx server:
sudo nginx -t
sudo systemctl restart nginx
You can now navigate to localhost:nginx-port (localhost:85) on your browser to confirm the changes.
That's all.
I hope this helps
回答8:
$ ps ax | grep nginx<br>
$ kill -9 PIDs
$ service nginx start
or set back /etc/nginx/sites-available/default
location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
try_files $uri $uri/ =404;
}
回答9:
I had the same problem when I used Vesta, which uses nginx with apache. The problem was that after applying all updates Apache started listening to 443 for https. The solution was just to comment out the 443 stuff in ports.conf. This is because nginx also uses this port.
回答10:
In my case, nginx was not able to open the log file which is located here /var/log/nginx/error.log
This was because I had deleted the log directory to free up space in root (which turned out to be stupid)
I then created a log folder in var and an nginx folder in log.
Then simply run sudo service nginx start
回答11:
Try set a user in nginx.conf, maybe that's why he can not start the service:
User www-data;
回答12:
Check df -h if you are under centOS system
回答13:
For my case, I need to run
sudo nginx -t
It will check if Nginx configuration is correct or not, if not, it will show you which configuration causes the error.
Then you need to go to /etc/nginx/sites-available to fix the broken configuration.
After that, you can restart Nginx without any problem.
sudo systemctl restart nginx
回答14:
This worked for me:
First, go to
cd /etc/nginx
and make the changes in nginx.conf and make the default port to listen from 80 to any of your choice 85 or something.
Then use this command to bind that port type for nginx to use it:
semanage port -a -t PORT_TYPE -p tcp 85
where PORT_TYPE is one of the following: http_cache_port_t, http_port_t, jboss_management_port_t, jboss_messaging_port_t, ntop_port_t, puppet_port_t.
Then run:
sudo systemctl start nginx; #sudo systemctl status nginx
[you should see active status]; #sudo systemctl enable nginx
回答15:
I'm using RHEL 7.4 with NGINX 1.13.8 and if I do the same with sudo, it works Ok:
sudo systemctl status nginx.service
Just make sure whoever wants to use nginx.service has execute permissions to it.
回答16:
use these command to
sudo service apache2 stop
sudo apt-get purge apache2
sudo apt-get update
sudo apt-get install nginx
sudo service nginx restart
