Podman : Install2018/08/30 |
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Install Container management tool Podman.
It's possible to use the same ease of use of Docker Cli and also Podman does not need specific Service Daemon. |
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| [1] | Install Podman. |
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[root@dlp ~]# yum -y install podman
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| [2] | This is the basic usage for Podman. |
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# pull image [root@dlp ~]# podman pull centos [root@dlp ~]# podman images REPOSITORY TAG IMAGE ID CREATED SIZE docker.io/library/centos latest 5182e96772bf 3 weeks ago 208MB # run command inside container [root@dlp ~]# podman run centos /bin/echo "Welcome to the Podman World" Welcome to the Podman World # enter interactive session [root@dlp ~]# podman run -it centos bash [root@bd11108ed4a3 /]# [root@bd11108ed4a3 /]# exit [root@dlp ~]# # commit image [root@dlp ~]# podman run centos bash -c "yum -y install httpd" [root@dlp ~]# podman commit $(podman ps -a | sed -n 2p | awk '{print $1}') my-httpd [root@dlp ~]# podman images REPOSITORY TAG IMAGE ID CREATED SIZE localhost/my-httpd latest 314fc5b0d003 16 seconds ago 335MB docker.io/library/centos latest 5182e96772bf 3 weeks ago 208MB # run on background [root@dlp ~]# podman run -dt -p 80:80 localhost/my-httpd /usr/sbin/apachectl -D FOREGROUND [root@dlp ~]# podman ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES d6ff4ee4e63a localhost/my-httpd:latest /usr/sbin/apachectl... 4 seconds ago Up 3 seconds ago 0.0.0.0:80->80/udp, 0.0.0.0:80->80/tcp gracious_wiles[root@dlp ~]# podman exec -it d6ff4ee4e63a bash -c 'echo "Hello Podman" > /var/www/html/index.html' [root@dlp ~]# podman inspect -l | grep \"IPAddress
"IPAddress": "10.88.0.15",
[root@dlp ~]# curl 10.88.0.15 Hello Podman[root@dlp ~]# podman kill d6ff4ee4e63a d6ff4ee4e63aa33312b6532261200b1b0fdd5ecff22d27ac64d7818605ca6f07 # mount latest container's filesystem [root@dlp ~]# podman mount $(podman ps -a | sed -n 2p | awk '{print $1}') /var/lib/containers/storage/overlay/5903fff998e5aec08d4489febf4884008137055cc7b5d3a002b1ec4f532b5332/merged[root@dlp ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/centos-root 26G 2.2G 24G 9% / devtmpfs 3.9G 0 3.9G 0% /dev tmpfs 3.9G 0 3.9G 0% /dev/shm tmpfs 3.9G 8.6M 3.9G 1% /run tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/vda1 1014M 188M 827M 19% /boot tmpfs 799M 0 799M 0% /run/user/0 overlay 26G 2.2G 24G 9% /var/lib/containers/storage/overlay/5903fff998e5aec08d4489febf4884008137055cc7b5d3a002b1ec4f532b5332/merged # unmount [root@dlp ~]# podman umount $(podman ps -a | sed -n 2p | awk '{print $1}')
# search [root@dlp ~]# podman search nginx INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED docker.io docker.io/library/nginx Official build of Nginx. 9436 [OK] docker.io docker.io/jwilder/nginx-proxy Automated Nginx reverse proxy for docker con... 1393 [OK] # build from Dockerfile [root@dlp ~]# cat > Dockerfile <<EOF FROM centos MAINTAINER ServerWorld <admin@srv.world> RUN yum -y install httpd RUN echo "Hello Podman" > /var/www/html/index.html EXPOSE 80 CMD ["/usr/sbin/apachectl", "-D", "FOREGROUND"] EOF podman build -t my-httpd:latest . [root@dlp ~]# podman images REPOSITORY TAG IMAGE ID CREATED SIZE localhost/my-httpd latest 49b78fbd4fb3 49 seconds ago 335MB docker.io/library/centos latest 5182e96772bf 3 weeks ago 208MB # delere all containers (if delete specific one, specify container's ID or Name) [root@dlp ~]# podman rm --all 0f8091a39a45fe0ec0b21eefe76fed0bb12f4e915e92d9fa0c5731c8c66c5d4b 4d654b0eab1a1b75773cd74e13ac6c51ca8e563e1484ca679df5a6ff6b9514e7 52c5f532425f59a7447a8255a664d53f03c43d35261249d6a7eec4adeca45aee # delere all images (if delete specific one, specify image's ID) [root@dlp ~]# podman rmi --all Untagged: docker.io/library/centos:latest 314fc5b0d003953430967325517477af522f5df569c1537062e23875f226894f 18f01f6f77ef941f5b31dd007d113620cbb1939ac33d1922edce7d9d2c9ebad7 5182e96772bf11f4b912658e265dfe0db8bd314475443b6434ea708784192892 49b78fbd4fb359ff1c2fbb3a670ef6ac062f8e6b7126c15c920e2ba3f0c6c32e |
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