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Managing your cloud resources with OpenStack/en: Difference between revisions
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Managing your cloud resources with OpenStack/en (view source)
Revision as of 18:40, 25 January 2019
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CIDR stands for Classless Inter-Domain Routing and is a standardized way of defining IP ranges (see also this wikipedia page on [https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing CIDR]). | CIDR stands for Classless Inter-Domain Routing and is a standardized way of defining IP ranges (see also this wikipedia page on [https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing CIDR]). | ||
An example of a CIDR rule is <code>192.168.1.1/24</code>. This looks just like a normal IP address with a <code>/24</code> appended to it. IP addresses are made up of 4, 1-byte (8 bit) numbers ranging from 0 to 255. What this <code>/24</code> means is that this CIDR rule will match the first left most 24 bits (3 bytes) of an IP address. In this case, any IP address starting with <code>192.168.1</code> will match this CIDR rule. If <code>/32</code> is appended, the full 32 bits of the IP address must match exactly; if | An example of a CIDR rule is <code>192.168.1.1/24</code>. This looks just like a normal IP address with a <code>/24</code> appended to it. IP addresses are made up of 4, 1-byte (8 bit) numbers ranging from 0 to 255. What this <code>/24</code> means is that this CIDR rule will match the first left most 24 bits (3 bytes) of an IP address. In this case, any IP address starting with <code>192.168.1</code> will match this CIDR rule. If <code>/32</code> is appended, the full 32 bits of the IP address must match exactly; if <code>/0</code> is appended, no bits must match and therefore any IP address will match it. | ||
=Working with Volumes= | =Working with Volumes= | ||
A | A volume provides storage which is not destroyed when a VM is terminated. On Compute Canada clouds, volumes use [https://en.wikipedia.org/wiki/Ceph_(software) Ceph] storage with a 3-fold replication factor to provide safety against hardware failure. More documentation about OpenStack volumes can be found [https://docs.openstack.org/cinder/latest/cli/cli-manage-volumes.html here]. | ||
==Creating a Volume== | ==Creating a Volume== | ||
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*Volume Source: <code>No source, empty volume</code><br/> | *Volume Source: <code>No source, empty volume</code><br/> | ||
*Type: <code>No volume type</code><br/> | *Type: <code>No volume type</code><br/> | ||
*Size ( | *Size (GiB): <code>40</code>, or some suitable size<br/> | ||
*Availability Zone: <code>Any Availability Zone</code><br/> | *Availability Zone: <code>Any Availability Zone</code><br/> | ||