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docs/tutorials/podman_tutorial.md

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Update now that more of the podman commands are working
correctly, esp top and friends.

Signed-off-by: baude <bbaude@redhat.com>
This commit is contained in:
baude
2018-02-07 15:06:28 -06:00
parent 588c9bb5de
commit 4cfd0f50fb
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docs/tutorials/podman_tutorial.md
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@ -101,19 +101,16 @@ $ sudo podman ps
```
Note: If you add *-a* to the *ps* command, Podman will show all containers.
### Executing a command in a running container
You can use the *exec* subcommand to execute a command in a running container. Eventually you will be able to
obtain the IP address of the container through inspection, but that is not enabled yet. Therefore, we will
install *iproute* in the container. Notice here that we use the switch **--latest** as a shortcut for the latest
created container. You could also use the container's ID listed during *podman ps* in the previous step or
when you ran the container.
### Inspecting a running container
You can "inspect" a running container for metadata and details about itself. We can even use
the inspect subcommand to see what IP address was assigned to the container.
```
$ sudo podman exec --latest -t dnf -y install iproute
$ sudo podman exec --latest -t ip a
$ sudo podman inspect -l | grep IPAddress\":
"IPAddress": "10.88.6.140",
```
Note the IP address of the *ethernet* device.
Note: The -l is convenience arguement for **latest container**. You can also use the container's ID instead
of -l.
### Testing the httpd server
Now that we have the IP address of the container, we can test the network communication between the host
@ -127,14 +124,22 @@ containerized httpd server.
You can view the container's logs with Podman as well:
```
$ sudo podman logs --latest
10.88.0.1 - - [07/Feb/2018:15:22:11 +0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.55.1" "-"
10.88.0.1 - - [07/Feb/2018:15:22:30 +0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.55.1" "-"
10.88.0.1 - - [07/Feb/2018:15:22:30 +0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.55.1" "-"
10.88.0.1 - - [07/Feb/2018:15:22:31 +0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.55.1" "-"
10.88.0.1 - - [07/Feb/2018:15:22:31 +0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.55.1" "-"
```
<!-- (
### Viewing the container's pids
And you can observe the httpd pid in the container with *top*.
```
$ sudo podman top <container_id>
``` ) -->
UID PID PPID C STIME TTY TIME CMD
0 31873 31863 0 09:21 ? 00:00:00 nginx: master process nginx -g daemon off;
101 31889 31873 0 09:21 ? 00:00:00 nginx: worker process
```
### Stopping the container
To stop the httpd container:
```