Docker project

Since last few weekend I am learning Docker. A great initiative from Linux word under IIEC Rise and guidance of Vimal Daga. At the completion of this training I have implemented container technology and created my own monitoring system(Moatis).

Project steps:-

1. Pull centos:7 image
2. I created a volume for persistent storage 
3. Launched a container
4. Exposed it to public
5. Login into newly created centos container
6. Deployed Nagios
7. Setup monitoring on few hosts
8. Tested if each and everything is working fine or not.

Please check below for all the commands which I have executed to complete this project.

Commands I have executed on Container Host - 

  176  podman container ls

  177  podman container ls -a

  178  podman image ls

  179  podman volume create mymoatis

  180  podman volume inspect mymoatis

  181  cd /var/lib/containers/storage/mymoatis/_data/

  182  ls

  183  podman volume rm mymoatis

  184  podman volume ls

  185  podman volume create moatis_storage

  186  podman volume ls

  187  podman container run -dit --name my_moatis -v moatis_storage:/var/local/nagios -p 8080:80 docker.io/library/centos

  188  podman image ls

  189  podman container run -dit --name my_moatis -v moatis_storage:/var/local/nagios -p 8080:80 docker.io/library/centos:7 docker.io/library/centos:7

  190  podman container ls

  191  podman container ps -a

  192  podman container rm 4c238f3ca3bb

  193  podman container ps -a

  194  podman container run -dit --name my_moatis -v moatis_storage:/var/local/nagios -p 8080:80 docker.io/library/centos:7 docker.io/library/centos:7

  195  podman container ps -a

  196  podman attach e41614fe7b4d

  197  podman container start e41614fe7b4d

  198  podman image ls

  199  podman container rm 4c238f3ca3bb

  200  podman container rm e41614fe7b4d

  201  podman container ps -a

  202  podman image ls

  203  podman container run -dit --name my_moatis -v moatis_storage:/var/local/nagios -p 8080:80 docker.io/library/centos:7

  204  podman container ps -a

  205  podman attach 262f0db5af65

  206  podman container run -dit --privileged=true --name my_moatis1 -v moatis_storage:/var/local/nagios -p 8080:80 localhost/my_moatis1:1

  207  podman attach my_moatis1

  208  podman container rm 3a95724d16c58a385ff31ca88fccd5b8e58b012e25af2cc0d1a0e0a65131a67b

  209  podman container run -dit --privileged -v /sys/fs/cgroup:/sys/fs/cgroup:ro --name my_moatis1 -v moatis_storage:/var/local/nagios -p 8080:80 localhost/my_moatis1:1

  210  podman container rm my_moatis1

  211  podman container run -dit --privileged /usr/sbin/init --name my_moatis1 -v moatis_storage:/var/local/nagios -p 8080:80 localhost/my_moatis1:1

  212  podman container run -dit --privileged IMAGE /usr/sbin/init --name my_moatis1 -v moatis_storage:/var/local/nagios -p 8080:80 localhost/my_moatis1:1

  213  podman container run -dit --privileged=true --name my_moatis1 -v moatis_storage:/var/local/nagios -p 8080:80 localhost/my_moatis1:1 bash

  214  ifconfig enp0s3

  215  podman container ps -a

  216  systemctl status httpd

  217  yum install httpd

  218  yum install http -y

  219  yum repolist

  220  dnf install http -y

  221  dnf install httpd -y

  222  df -hT

  223  cat /etc/yum.repos.d/my.repo

  224  df -hT

  225  yum repolist

  226  dnf install httpd -y

  227  yum repolist

  228  dnf clean all

  229  dnf repolist

  230  dnf cleanall

  231  dnf repolist

  232  dnf clean all

  233  dnf repolist

  234  dnf install httpd -y

  235  systemctl status httpd

  236  systemctl start httpd

  237  systemctl status httpd

  238  view /usr/lib/systemd/system/httpd.service

  239  podman image ls

  240  podman container commit my_moatis1 my_moatis2

  241  podman image ls

  242  podman container run -dit --privileged=true --name my_moatis2 -v moatis_storage:/var/local/nagios -p 8080:80 localhost/my_moatis2:latest  /usr/sbin/init

  243  systemctl status httpd

  244  systemctl enable httpd

  245  systemctl restart httpd

  246  systemctl status httpd

  247  cd /root/nagios

  248  ping 5786a768776f

  249  ifconfig

  250  ifconfig enp0s3

  251  podman container commit my_moatis2

  252  podman container commit my_moatis2 nagios_final

  253  podman image ls

Commands executed on Moatis container -

[root@5786a768776f objects]# history

    1  systemctl

    2  systemctl

    3  systemctl status httpd

    4  systemctl start httpd

    5  systemctl enable httpd

    6  cd /root/

    7  ls

    8  cd nagios/

    9  ls

   10  ls -ld

   11  ls -l

   12  cd nagios-plugins-2.2.1

   13  ./configure --with-nagios-user=nagios --with-nagios-group=nagios

   14  make

   15  make install

   16  /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

   17  systemctl enable nagios

   18  systemctl enable httpd

   19  systemctl start nagios.service

   20  ping 192.168.1.8

   21  history

   22  nagios check

   23  vim /usr/local/nagios/etc/objects/localhost.cfg

   24  ifconfig

   25  vim /usr/local/nagios/etc/objects/localhost.cfg

   26  cd /usr/local/nagios/etc/objects/

   27  grep -irow localhost .

   28  vim vim localhost.cfg

   29  ls

   30  vim localhost.cfg

   31  vim localhost.cfg

   32  /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

   33  vim /usr/local/nagios/etc/objects/localhost.cfg

   34  /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

   35  systemctl reload nagios

   36  /usr/local/nagios/libexec/check_icmp -H 10.88.0.10

   37  systemctl status sshd

   38  yum install openssh-server -y

   39  systemctl status sshd

   40  systemctl start sshd

   41  systemctl enable sshd

   42  systemctl status sshd

   43  /usr/local/nagios/libexec/check_http -H 10.88.0.10

   44  /usr/local/nagios/libexec/check_http --help

   45  /usr/local/nagios/libexec/check_http -H 10.88.0.10 -p 80

   46  /usr/local/nagios/libexec/check_http -H 10.88.0.10 -p 80

   47  vim /usr/local/nagios/etc/objects/localhost.cfg

   48  ls

   49  ls

   50  vim windows.cfg

   51  ping 192.168.1.2

   52  ls

   53  vim commands.cfg

   54  ping hub.docker.com

   55  history

[root@5786a768776f objects]#