nginx 설치 오류 해결과정

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nginx 설치 오류 해결과정

챠나 2023. 6. 7. 04:23

echo "deb http://security.ubuntu.com/ubuntu bionic-security main" | sudo tee -a /etc/apt/sources.list.d/bionic.list

deb http://security.ubuntu.com/ubuntu bionic-security main
ubuntu@ip-172-31-33-255:/etc/apt$ sudo apt update
Hit:1 http://ap-northeast-2.ec2.archive.ubuntu.com/ubuntu jammy InRelease
Hit:2 http://ap-northeast-2.ec2.archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:3 http://ap-northeast-2.ec2.archive.ubuntu.com/ubuntu jammy-backports InRelease
Hit:4 http://archive.ubuntu.com/ubuntu jammy InRelease
Hit:5 http://security.ubuntu.com/ubuntu jammy-security InRelease
Hit:6 http://nginx.org/packages/ubuntu focal InRelease
Hit:7 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:8 http://archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:9 http://archive.ubuntu.com/ubuntu jammy-security InRelease
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
5 packages can be upgraded. Run 'apt list --upgradable' to see them.
W: http://nginx.org/packages/ubuntu/dists/focal/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2

ubuntu@ip-172-31-33-255:/etc/apt$ apt-cache policy libssl1.0-dev

libssl1.0-dev:
  Installed: 1.0.2n-1ubuntu5.13
  Candidate: 1.0.2n-1ubuntu5.13
  Version table:
 *** 1.0.2n-1ubuntu5.13 500
        500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
        100 /var/lib/dpkg/status

ubuntu@ip-172-31-33-255:/etc/apt$ sudo apt-get install libssl1.0-dev

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
libssl1.0-dev is already the newest version (1.0.2n-1ubuntu5.13).
0 upgraded, 0 newly installed, 0 to remove and 5 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up nginx-light (1.18.0-6ubuntu14.3) ...
Job for nginx.service failed because the control process exited with error code.
See "systemctl status nginx.service" and "journalctl -xeu nginx.service" for details.
invoke-rc.d: initscript nginx, action "start" failed.
× 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 Wed 2023-06-07 01:44:41 KST; 22ms ago
       Docs: man:nginx(8)
    Process: 22911 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=1/FAILURE)
        CPU: 5ms

Jun 07 01:44:41 ip-172-31-33-255 systemd[1]: Starting A high performance web server and a reverse proxy server...
Jun 07 01:44:41 ip-172-31-33-255 nginx[22911]: nginx: [emerg] open() "/etc/nginx/nginx.conf" failed (2: No such file or directory)
Jun 07 01:44:41 ip-172-31-33-255 nginx[22911]: nginx: configuration file /etc/nginx/nginx.conf test failed
Jun 07 01:44:41 ip-172-31-33-255 systemd[1]: nginx.service: Control process exited, code=exited, status=1/FAILURE
Jun 07 01:44:41 ip-172-31-33-255 systemd[1]: nginx.service: Failed with result 'exit-code'.
Jun 07 01:44:41 ip-172-31-33-255 systemd[1]: Failed to start A high performance web server and a reverse proxy server.
dpkg: error processing package nginx-light (--configure):
 installed nginx-light package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 nginx-light
needrestart is being skipped since dpkg has failed
E: Sub-process /usr/bin/dpkg returned an error code (1)
ubuntu@ip-172-31-33-255:/etc/apt$ ubuntu -version
ubuntu: command not found

ubuntu@ip-172-31-33-255:/etc/apt$ apt-get remove --purge nginx nginx-full nginx-common

E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), are you root?

ubuntu@ip-172-31-33-255:/etc/apt$ sudo su -

root@ip-172-31-33-255:~# apt-get remove --purge nginx nginx-full nginx-common

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package 'nginx-full' is not installed, so not removed
Package 'nginx' is not installed, so not removed
The following packages will be REMOVED:
  libnginx-mod-http-echo* libnginx-mod-http-geoip2* nginx-common* nginx-light*
0 upgraded, 0 newly installed, 4 to remove and 5 not upgraded.
1 not fully installed or removed.
After this operation, 1705 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 120369 files and directories currently installed.)
Removing nginx-light (1.18.0-6ubuntu14.3) ...
Removing libnginx-mod-http-echo (1.18.0-6ubuntu14.3) ...
Removing libnginx-mod-http-geoip2 (1.18.0-6ubuntu14.3) ...
Removing nginx-common (1.18.0-6ubuntu14.3) ...
Processing triggers for man-db (2.10.2-1) ...
(Reading database ... 120324 files and directories currently installed.)
Purging configuration files for nginx-common (1.18.0-6ubuntu14.3) ...
dpkg: warning: while removing nginx-common, directory '/var/www/html' not empty so not removed
Purging configuration files for libnginx-mod-http-echo (1.18.0-6ubuntu14.3) ...
Purging configuration files for libnginx-mod-http-geoip2 (1.18.0-6ubuntu14.3) ...
Processing triggers for ufw (0.36.1-4build1) ...
Scanning processes...
Scanning candidates...
Scanning linux images...

Running kernel seems to be up-to-date.

Restarting services...
Service restarts being deferred:
 systemctl restart networkd-dispatcher.service
 systemctl restart unattended-upgrades.service

No containers need to be restarted.

No user sessions are running outdated binaries.

No VM guests are running outdated hypervisor (qemu) binaries on this host.

root@ip-172-31-33-255:~# nginx

Command 'nginx' not found, but can be installed with:
apt install nginx-core    # version 1.18.0-6ubuntu14.3, or
apt install nginx-extras  # version 1.18.0-6ubuntu14.3
apt install nginx-light   # version 1.18.0-6ubuntu14.3

root@ip-172-31-33-255:~# sudo apt update

Hit:1 http://ap-northeast-2.ec2.archive.ubuntu.com/ubuntu jammy InRelease
Hit:2 http://ap-northeast-2.ec2.archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:3 http://ap-northeast-2.ec2.archive.ubuntu.com/ubuntu jammy-backports InRelease
Hit:4 http://archive.ubuntu.com/ubuntu jammy InRelease
Hit:5 http://security.ubuntu.com/ubuntu jammy-security InRelease
Hit:6 http://archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:7 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:8 http://archive.ubuntu.com/ubuntu jammy-security InRelease
Hit:9 http://nginx.org/packages/ubuntu focal InRelease
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
5 packages can be upgraded. Run 'apt list --upgradable' to see them.
W: http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: http://nginx.org/packages/ubuntu/dists/focal/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2

root@ip-172-31-33-255:~# sudo apt install nginx

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  libssl1.1
The following NEW packages will be installed:
  libssl1.1 nginx
0 upgraded, 2 newly installed, 0 to remove and 5 not upgraded.
Need to get 2200 kB of archives.
After this operation, 7203 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://security.ubuntu.com/ubuntu bionic-security/main amd64 libssl1.1 amd64 1.1.1-1ubuntu2.1~18.04.23 [1303 kB]
Get:2 http://nginx.org/packages/ubuntu focal/nginx amd64 nginx amd64 1.24.0-1~focal [897 kB]
Fetched 2200 kB in 2s (975 kB/s)
Preconfiguring packages ...
Selecting previously unselected package libssl1.1:amd64.
(Reading database ... 120304 files and directories currently installed.)
Preparing to unpack .../libssl1.1_1.1.1-1ubuntu2.1~18.04.23_amd64.deb ...
Unpacking libssl1.1:amd64 (1.1.1-1ubuntu2.1~18.04.23) ...
Selecting previously unselected package nginx.
Preparing to unpack .../nginx_1.24.0-1~focal_amd64.deb ...
----------------------------------------------------------------------

Thanks for using nginx!

Please find the official documentation for nginx here:
* https://nginx.org/en/docs/

Please subscribe to nginx-announce mailing list to get
the most important news about nginx:
* https://nginx.org/en/support.html

Commercial subscriptions for nginx are available on:
* https://nginx.com/products/

----------------------------------------------------------------------
Unpacking nginx (1.24.0-1~focal) ...
Setting up libssl1.1:amd64 (1.1.1-1ubuntu2.1~18.04.23) ...
Setting up nginx (1.24.0-1~focal) ...
Created symlink /etc/systemd/system/multi-user.target.wants/nginx.service → /lib/systemd/system/nginx.service.
Processing triggers for man-db (2.10.2-1) ...
Processing triggers for libc-bin (2.35-0ubuntu3.1) ...
Scanning processes...
Scanning candidates...
Scanning linux images...

Running kernel seems to be up-to-date.

Restarting services...
Service restarts being deferred:
 systemctl restart networkd-dispatcher.service
 systemctl restart unattended-upgrades.service

No containers need to be restarted.

No user sessions are running outdated binaries.

No VM guests are running outdated hypervisor (qemu) binaries on this host.

root@ip-172-31-33-255:~# apt-get remove --purge nginx nginx-full nginx-common

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package 'nginx-common' is not installed, so not removed
Package 'nginx-full' is not installed, so not removed
The following package was automatically installed and is no longer required:
  libssl1.1
Use 'apt autoremove' to remove it.
The following packages will be REMOVED:
  nginx*
0 upgraded, 0 newly installed, 1 to remove and 5 not upgraded.
After this operation, 3172 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 120347 files and directories currently installed.)
Removing nginx (1.24.0-1~focal) ...
Processing triggers for man-db (2.10.2-1) ...
(Reading database ... 120328 files and directories currently installed.)
Purging configuration files for nginx (1.24.0-1~focal) ...

root@ip-172-31-33-255:~# exit
logout

ubuntu@ip-172-31-33-255:/etc/apt$ cd ~
ubuntu@ip-172-31-33-255:~$ sudo apt update

Hit:1 http://ap-northeast-2.ec2.archive.ubuntu.com/ubuntu jammy InRelease
Hit:2 http://ap-northeast-2.ec2.archive.ubuntu.com/ubuntu jammy-updates InRelease
Get:3 http://ap-northeast-2.ec2.archive.ubuntu.com/ubuntu jammy-backports InRelease [108 kB]
Hit:4 http://security.ubuntu.com/ubuntu jammy-security InRelease
Hit:5 http://archive.ubuntu.com/ubuntu jammy InRelease
Hit:6 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:7 http://nginx.org/packages/ubuntu focal InRelease
Hit:8 http://archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:9 http://archive.ubuntu.com/ubuntu jammy-security InRelease
Fetched 108 kB in 1s (91.5 kB/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
5 packages can be upgraded. Run 'apt list --upgradable' to see them.
W: http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: http://nginx.org/packages/ubuntu/dists/focal/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2
W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list.d/bionic.list:1 and /etc/apt/sources.list.d/bionic.list:2

ubuntu@ip-172-31-33-255:~$ sudo apt install nginx

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following NEW packages will be installed:
  nginx
0 upgraded, 1 newly installed, 0 to remove and 5 not upgraded.
Need to get 897 kB of archives.
After this operation, 3172 kB of additional disk space will be used.
Get:1 http://nginx.org/packages/ubuntu focal/nginx amd64 nginx amd64 1.24.0-1~focal [897 kB]
Fetched 897 kB in 2s (428 kB/s)
Selecting previously unselected package nginx.
(Reading database ... 120314 files and directories currently installed.)
Preparing to unpack .../nginx_1.24.0-1~focal_amd64.deb ...
----------------------------------------------------------------------

Thanks for using nginx!

Please find the official documentation for nginx here:
* https://nginx.org/en/docs/

Please subscribe to nginx-announce mailing list to get
the most important news about nginx:
* https://nginx.org/en/support.html

Commercial subscriptions for nginx are available on:
* https://nginx.com/products/

----------------------------------------------------------------------
Unpacking nginx (1.24.0-1~focal) ...
Setting up nginx (1.24.0-1~focal) ...
Created symlink /etc/systemd/system/multi-user.target.wants/nginx.service → /lib/systemd/system/nginx.service.
Processing triggers for man-db (2.10.2-1) ...
Scanning processes...
Scanning candidates...
Scanning linux images...

Running kernel seems to be up-to-date.

Restarting services...
 systemctl restart nginx.service
Job for nginx.service failed because the control process exited with error code.
See "systemctl status nginx.service" and "journalctl -xeu nginx.service" for details.
Service restarts being deferred:
 systemctl restart networkd-dispatcher.service
 systemctl restart unattended-upgrades.service

No containers need to be restarted.

No user sessions are running outdated binaries.

No VM guests are running outdated hypervisor (qemu) binaries on this host.

ubuntu@ip-172-31-33-255:~$ sudo systemctl status nginx.service

× nginx.service - nginx - high performance web server
     Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Wed 2023-06-07 02:09:07 KST; 2min 24s ago
       Docs: https://nginx.org/en/docs/
    Process: 26984 ExecStart=/usr/sbin/nginx -c /etc/nginx/nginx.conf (code=exited, status=1/FAILURE)
        CPU: 9ms

Jun 07 02:09:04 ip-172-31-33-255 systemd[1]: Starting nginx - high performance web server...
Jun 07 02:09:04 ip-172-31-33-255 nginx[26984]: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
Jun 07 02:09:05 ip-172-31-33-255 nginx[26984]: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
Jun 07 02:09:05 ip-172-31-33-255 nginx[26984]: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
Jun 07 02:09:06 ip-172-31-33-255 nginx[26984]: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
Jun 07 02:09:06 ip-172-31-33-255 nginx[26984]: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
Jun 07 02:09:07 ip-172-31-33-255 nginx[26984]: nginx: [emerg] still could not bind()
Jun 07 02:09:07 ip-172-31-33-255 systemd[1]: nginx.service: Control process exited, code=exited, status=1/FAILURE
Jun 07 02:09:07 ip-172-31-33-255 systemd[1]: nginx.service: Failed with result 'exit-code'.
Jun 07 02:09:07 ip-172-31-33-255 systemd[1]: Failed to start nginx - high performance web server.

ubuntu@ip-172-31-33-255:~$ netstat -anp | grep 80

(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      -
tcp6       0      0 :::8080                 :::*                    LISTEN      11294/java
tcp6       0      0 172.31.33.255:8080      172.31.57.155:29530     TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.2.225:55210      TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.35.119:25754     TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.27.205:30028     TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.27.205:37574     TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.57.155:45118     TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.2.225:33478      TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.35.119:24986     TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.27.205:24966     TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.2.225:10500      TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.57.155:56184     TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.2.225:42958      TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.27.205:18910     TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.35.119:9140      TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.57.155:11152     TIME_WAIT   -
tcp6       0      0 172.31.33.255:8080      172.31.35.119:48192     TIME_WAIT   -
unix  2      [ ACC ]     STREAM     LISTENING     18039    -                    /var/lib/amazon/ssm/ipc/termination
unix  2      [ ACC ]     STREAM     LISTENING     18038    -                    /var/lib/amazon/ssm/ipc/health
unix  2      [ ]         DGRAM      CONNECTED     16800    -                    /run/chrony/chronyd.sock
unix  3      [ ]         SEQPACKET  CONNECTED     16801    -
unix  3      [ ]         SEQPACKET  CONNECTED     16802    -

ubuntu@ip-172-31-33-255:~$ sudo fuser -k 80/tcp

80/tcp:              24489 24490 24491

ubuntu@ip-172-31-33-255:~$ sudo service start nginx

start: unrecognized service
ubuntu@ip-172-31-33-255:~$ sudo service nginx restart
ubuntu@ip-172-31-33-255:~$ sudo service nginx status
● nginx.service - nginx - high performance web server
     Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
     Active: active (running) since Wed 2023-06-07 02:13:13 KST; 15s ago
       Docs: https://nginx.org/en/docs/
    Process: 27131 ExecStart=/usr/sbin/nginx -c /etc/nginx/nginx.conf (code=exited, status=0/SUCCESS)
   Main PID: 27132 (nginx)
      Tasks: 3 (limit: 2307)
     Memory: 2.4M
        CPU: 33ms
     CGroup: /system.slice/nginx.service
             ├─27132 "nginx: master process /usr/sbin/nginx -c /etc/nginx/nginx.conf"
             ├─27133 "nginx: worker process" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" ""
             └─27134 "nginx: worker process" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" ""

Jun 07 02:13:13 ip-172-31-33-255 systemd[1]: Starting nginx - high performance web server...
Jun 07 02:13:13 ip-172-31-33-255 systemd[1]: Started nginx - high performance web server.