Skip to main content

Lab 008: Linux Process Troubleshooting - Scrapes App Server 1

TASK 37 - SupportFile - Linux Process Troubleshooting​

thor@jump_host /$ sshpass -p '******' ssh -o StrictHostKeyChecking=no tony@172.16.238.10 Warning: Permanently added '172.16.238.10' (ECDSA) to the list of known hosts. sudo su -

[tony@stapp01 ~]$ sudo su -

We trust you have received the usual lecture from the local System Administrator. It usually boils down to these three things:

#1) Respect the privacy of others. #2) Think before you type. #3) With great power comes great responsibility.

[sudo] password for tony: [root@stapp01 ~]#[root@stapp01 ~]# systemctl status httpd ● httpd.service - The Apache HTTP Server Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled) Active: inactive (dead) Docs: man:httpd(8) man:apachectl(8) [root@stapp01 ~]# [root@stapp01 ~]# httpd -t AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 172.16.238.10. Set the 'ServerName' directive globally to suppress this message Syntax OK [root@stapp01 ~]# systemctl enable httpd Created symlink from /etc/systemd/system/multi-user.target.wants/httpd.service to /usr/lib/systemd/system/httpd.service. [root@stapp01 ~]# [root@stapp01 ~]# systemctl start httpd Job for httpd.service failed because the control process exited with error code. See "systemctl status httpd.service" and"journalctl -xe" for details. [root@stapp01 ~]# [root@stapp01 ~]# systemctl status httpd ● httpd.service - The Apache HTTP Server Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled) Active: failed (Result: exit-code) since Wed 2020-09-09 20:02:33 UTC; 394ms ago Docs: man:httpd(8) man:apachectl(8) Process: 366 ExecStop=/bin/kill -WINCH ${MAINPID} (code=exited, status=1/FAILURE) Process: 365 ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND (code=exited, status=1/FAILURE) Main PID: 365 (code=exited, status=1/FAILURE)

Sep 09 20:02:33 stapp01 httpd[365]: AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 172.16.238.10. Set the 'ServerName' directive global...s this message Sep 09 20:02:33 stapp01 httpd[365]: (98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0.0:6100 Sep 09 20:02:33 stapp01 httpd[365]: no listening sockets available, shutting down Sep 09 20:02:33 stapp01 httpd[365]: AH00015: Unable to open logs Sep 09 20:02:33 stapp01 systemd[1]: httpd.service: main process exited, code=exited, status=1/FAILURE Sep 09 20:02:33 stapp01 kill[366]: kill: cannot find process "" Sep 09 20:02:33 stapp01 systemd[1]: httpd.service: control process exited, code=exited status=1 Sep 09 20:02:33 stapp01 systemd[1]: Failed to start The Apache HTTP Server. Sep 09 20:02:33 stapp01 systemd[1]: Unit httpd.service entered failed state. Sep 09 20:02:33 stapp01 systemd[1]: httpd.service failed. Hint: Some lines were ellipsized, use -l to show in full. [root@stapp01 ~]# [root@stapp01 ~]# httpd -t AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 172.16.238.10. Set the 'ServerName' directive globally to suppress this message Syntax OK [root@stapp01 ~]# [root@stapp01 ~]# cat /etc/httpd/conf/httpd.conf | grep Listen

Listen: Allows you to bind Apache to specific IP addresses and/or

Change this to Listen on specific IP addresses as shown below to

Listen 12.34.56.78:80

Listen 6100 [root@stapp01 ~]# [root@stapp01 ~]# yum install -y net-tools Loaded plugins: fastestmirror, ovl Determining fastest mirrors epel/x86_64/metalink | 30 kB 00:00:00

  • base: mirror.plustech.de
  • epel: mirrors.n-ix.net
  • extras: mirror.checkdomain.de
  • remi-php72: mirror.23media.com
  • remi-safe: mirror.23media.com
  • updates: mirror.alpix.eu base | 3.6 kB 00:00:00 epel | 4.7 kB 00:00:00 extras | 2.9 kB 00:00:00 remi-php72 | 3.0 kB 00:00:00 remi-safe | 3.0 kB 00:00:00 updates | 2.9 kB 00:00:00 (1/9): base/7/x86_64/primary_db | 6.1 MB 00:00:00 (2/9): extras/7/x86_64/primary_db | 206 kB 00:00:00 (3/9): epel/x86_64/group_gz | 95 kB 00:00:00 (4/9): epel/x86_64/updateinfo | 1.0 MB 00:00:00 (5/9): epel/x86_64/primary_db | 6.9 MB 00:00:00 (7/9): remi-php72/primary_db 68% [================================(6/9): remi-php72/primary_db | 239 kB 00:00:00 (7/9): base/7/x86_64/group_gz | 153 kB 00:00:00 (8/9): updates/7/x86_64/primary_db | 4.5 MB 00:00:00 (9/9): remi-safe/primary_db | 1.8 MB 00:00:00 Package net-tools-2.0-0.25.20131004git.el7.x86_64 already installed and latest version Nothing to do [root@stapp01 ~]# netstat -tulpen Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State User Inode PID/Program name tcp 0 0 127.0.0.11:33124 0.0.0.0:LISTEN 0 31297 - tcp 0 0 0.0.0.0:111 0.0.0.0: LISTEN 0 40233 1/init tcp 0 0 127.0.0.1:6100 0.0.0.0:LISTEN 0 47386 333/sendmail: accep tcp 0 0 0.0.0.0:22 0.0.0.0: LISTEN 0 42114 213/sshd tcp6 0 0 :::111 :::LISTEN 0 39596 170/rpcbind tcp6 0 0 :::22 ::: LISTEN 0 42116 213/sshd udp 0 0 0.0.0.0:111 0.0.0.0:0 40234 1/init udp 0 0 127.0.0.11:38146 0.0.0.0: 0 31296 - udp 0 0 0.0.0.0:756 0.0.0.0:0 39592 170/rpcbind udp6 0 0 :::111 ::: 0 39593 170/rpcbind udp6 0 0 :::756 :::0 39595 170/rpcbind [root@stapp01 ~]# [root@stapp01 ~]# netstat -tulpen | grep 6100 tcp 0 0 127.0.0.1:6100 0.0.0.0: LISTEN 0 47386 333/sendmail: accep [root@stapp01 ~]# [root@stapp01 ~]# sudo kill -9 333 [root@stapp01 ~]# [root@stapp01 ~]# systemctl enable httpd [root@stapp01 ~]# [root@stapp01 ~]# systemctl start httpd [root@stapp01 ~]# [root@stapp01 ~]# systemctl status httpd ● httpd.service - The Apache HTTP Server Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled) Active: active (running) since Wed 2020-09-09 20:03:34 UTC; 9ms ago Docs: man:httpd(8) man:apachectl(8) Main PID: 580 (httpd) Status: "Processing requests..." CGroup: /docker/ba06aa3cc3429ad046e8ee0b2671637432a5ecb7c732eb0bcac8ed31f281bde9/system.slice/httpd.service ├─580 /usr/sbin/httpd -DFOREGROUND ├─581 /usr/sbin/httpd -DFOREGROUND ├─583 /usr/sbin/httpd -DFOREGROUND ├─584 /usr/sbin/httpd -DFOREGROUND ├─585 /usr/sbin/httpd -DFOREGROUND └─586 /usr/sbin/httpd -DFOREGROUND

Sep 09 20:03:34 stapp01 systemd[1]: Starting The Apache HTTP Server... Sep 09 20:03:34 stapp01 httpd[580]: AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 172.16.238.10. Set the 'ServerName' directive global...s this message Sep 09 20:03:34 stapp01 systemd[1]: Started The Apache HTTP Server. Hint: Some lines were ellipsized, use -l to show in full. [root@stapp01 ~]# [root@stapp01 ~]# Connection to host01 closed by remote host. Connection to host01 closed.

The environment has expired.

Please refresh to get a new environment.