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centos8_containers [2019/10/05 11:42]
rpjday created
centos8_containers [2019/10/06 12:32] (current)
rpjday [Overview]
Line 1: Line 1:
 ===== Overview ===== ===== Overview =====
  
-Discussion of "​Building,​ running, and managing containers"​+Discussion of [[https://​access.redhat.com/​documentation/​en-us/​red_hat_enterprise_linux/​8/​html/​building_running_and_managing_containers/​|"​Building,​ running, and managing containers"​]] 
 + 
 +Look into: 
 + 
 +  * Using the CRI-O Container Engine 
 +  * OCI image format, OCI-compatible container engines 
 +  * OpenShift 
 +  * pods (OpenShift) 
 +  * Create /​etc/​containers/​nodocker to shut up info msg 
 + 
 +===== Images ===== 
 + 
 +  * ubi8/rhel 
 +  * ubi8/​rhel-minimal 
 +  * ubi8/​rhel-init 
 +  * ubi8/​rhel-rsyslog 
 +  * ubi8/​support-tools 
 +  * ubi8/​net-snmp
  
 ===== Packages ===== ===== Packages =====
Line 7: Line 24:
 Installed (or to install): Installed (or to install):
  
-  * podman +  * podman ​(manage containers) 
-  * buildah +  * buildah ​(build OCI-compliant container images) 
-  * skopeo+  * skopeo ​(copy images to and from registries) 
 +  * podman-docker
  
 Dependencies:​ Dependencies:​
  
-  * runc+  * runc (runtime client for OCI format containers)
   * containers-common   * containers-common
   * containernetworking-plugins   * containernetworking-plugins
   * oci-systemd-hook   * oci-systemd-hook
 +  * oci-umount
   * container-selinux   * container-selinux
 +  * fuse-overlayfs
 +  * slirp4netns
 +
 +Modules:
 +
 +<​code>​
 +$ dnf module info container-tools
 +</​code>​
 +===== Concepts =====
 +
 +OCI: Open Container Initiative
 +
 +==== Use cases ====
 +
 +  * single-node
 +  * multi-node (sometimes called "​distributed systems"​)
 +
 +==== Core technologies ====
 +
 +  * cgroups
 +  * namespaces
 +  * SELinux
 +
 +==== Commands ====
 +
 +  * podman
 +  * buildah
 +  * skopeo
 +  * runc
 +
 +===== registries.conf =====
 +
 +<​code>​
 +# The only valid categories are: '​registries.search',​ '​registries.insecure', ​
 +# and '​registries.block'​.
 +
 +[registries.search]
 +registries = ['​registry.redhat.io',​ '​quay.io',​ '​docker.io'​]
 +
 +# If you need to access insecure registries, add the registry'​s fully-qualified name.
 +# An insecure registry is one that does not have a valid SSL certificate or only does HTTP.
 +[registries.insecure]
 +registries = []
 +
 +
 +# If you need to block pull access from a registry, uncomment the section below
 +# and add the registries fully-qualified name.
 +#
 +# Docker only
 +[registries.block]
 +registries = []
 +</​code>​
 +
centos8_containers.1570275752.txt.gz · Last modified: 2019/10/05 11:42 by rpjday