e085226f82
Add an e2e host-local plugin testcase, which requires being able to pass the datadir into the plugin so we can erase it later. We're not always guaranteed to have access to the default data dir location, plus it should probably be configurable anyway.
host-local IP address manager
host-local IPAM allocates IPv4 and IPv6 addresses out of a specified address range.
Usage
Obtain an IP
Given the following network configuration:
{
"name": "default",
"ipam": {
"type": "host-local",
"subnet": "203.0.113.0/24"
}
}
Using the command line interface
$ export CNI_COMMAND=ADD
$ export CNI_CONTAINERID=f81d4fae-7dec-11d0-a765-00a0c91e6bf6
$ ./host-local < $conf
{
"ip4": {
"ip": "203.0.113.1/24"
}
}
Backends
By default ipmanager stores IP allocations on the local filesystem using the IP address as the file name and the ID as contents. For example:
$ ls /var/lib/cni/networks/default
203.0.113.1 203.0.113.2
$ cat /var/lib/cni/networks/default/203.0.113.1
f81d4fae-7dec-11d0-a765-00a0c91e6bf6
Configuration Files
{
"name": "ipv6",
"ipam": {
"type": "host-local",
"subnet": "3ffe:ffff:0:01ff::/64",
"range-start": "3ffe:ffff:0:01ff::0010",
"range-end": "3ffe:ffff:0:01ff::0020",
"routes": [
{ "dst": "3ffe:ffff:0:01ff::1/64" }
]
}
}
{
"name": "ipv4",
"ipam": {
"type": "host-local",
"subnet": "203.0.113.1/24",
"range-start": "203.0.113.10",
"range-end": "203.0.113.20",
"routes": [
{ "dst": "203.0.113.0/24" }
]
}
}