add calico VXLAN mode, update docs and vars in sample inventory (#5731)

* calico VXLAN mode

* check vars if calico backend defined
pull/5759/head
Sergey 2020-03-12 11:20:37 +03:00 committed by GitHub
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6 changed files with 81 additions and 18 deletions

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@ -12,55 +12,55 @@ Check if the calico-node container is running
docker ps | grep calico
```
The **calicoctl** command allows to check the status of the network workloads.
The **calicoctl.sh** is wrap script with configured acces credentials for command calicoctl allows to check the status of the network workloads.
* Check the status of Calico nodes
```ShellSession
calicoctl node status
calicoctl.sh node status
```
or for versions prior to *v1.0.0*:
```ShellSession
calicoctl status
calicoctl.sh status
```
* Show the configured network subnet for containers
```ShellSession
calicoctl get ippool -o wide
calicoctl.sh get ippool -o wide
```
or for versions prior to *v1.0.0*:
```ShellSession
calicoctl pool show
calicoctl.sh pool show
```
* Show the workloads (ip addresses of containers and their located)
```ShellSession
calicoctl get workloadEndpoint -o wide
calicoctl.sh get workloadEndpoint -o wide
```
and
```ShellSession
calicoctl get hostEndpoint -o wide
calicoctl.sh get hostEndpoint -o wide
```
or for versions prior *v1.0.0*:
```ShellSession
calicoctl endpoint show --detail
calicoctl.sh endpoint show --detail
```
## Configuration
### Optional : Define network backend
In some cases you may want to define Calico network backend. Allowed values are 'bird', 'gobgp' or 'none'. Bird is a default value.
In some cases you may want to define Calico network backend. Allowed values are `bird`, `vxlan` or `none`. Bird is a default value.
To re-define you need to edit the inventory and add a group variable `calico_network_backend`
@ -199,9 +199,29 @@ To re-define health host please set the following variable in your inventory:
calico_healthhost: "0.0.0.0"
```
## Config encapsulation for cross server traffic
Calico supports two types of encapsulation: [VXLAN and IP in IP](https://docs.projectcalico.org/v3.11/networking/vxlan-ipip). VXLAN is supported in some environments where IP in IP is not (for example, Azure).
*IP in IP* and *VXLAN* is mutualy exclusive modes.
Configure Ip in Ip mode. Possible values is `Always`, `CrossSubnet`, `Never`.
```yml
calico_ipip_mode: 'Always'
```
Configure VXLAN mode. Possible values is `Always`, `CrossSubnet`, `Never`.
```yml
calico_vxlan_mode: 'Never'
```
If you use VXLAN mode, BGP networking is not required. You can disable BGP to reduce the moving parts in your cluster by `calico_network_backend: vxlan`
## Cloud providers configuration
Please refer to the official documentation, for example [GCE configuration](http://docs.projectcalico.org/v1.5/getting-started/docker/installation/gce) requires a security rule for calico ip-ip tunnels. Note, calico is always configured with ``ipip: true`` if the cloud provider was defined.
Please refer to the official documentation, for example [GCE configuration](http://docs.projectcalico.org/v1.5/getting-started/docker/installation/gce) requires a security rule for calico ip-ip tunnels. Note, calico is always configured with ``calico_ipip_mode: Always`` if the cloud provider was defined.
### Optional : Ignore kernel's RPF check setting

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@ -47,6 +47,17 @@
# Set max typha connections
# typha_max_connections_lower_limit: 300
# Set calico network backend: "bird", "vxlan" or "none"
# bird enable BGP routing, required for ipip mode.
# calico_network_backend: bird
# IP in IP and VXLAN is mutualy exclusive modes.
# set IP in IP encapsulation mode: "Always", "CrossSubnet", "Never"
# calico_ipip_mode: 'Always'
# set VXLAN encapsulation mode: "Always", "CrossSubnet", "Never"
# calico_vxlan_mode: 'Never'
# If you want to use non default IP_AUTODETECTION_METHOD for calico node set this option to one of:
# * can-reach=DESTINATION
# * interface=INTERFACE-REGEX

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@ -9,6 +9,8 @@ calico_ipv4pool_ipip: "Off"
# Use IP-over-IP encapsulation across hosts
ipip: true
ipip_mode: "{{ 'Always' if ipip else 'Never' }}" # change to "CrossSubnet" if you only want ipip encapsulation on traffic going across subnets
calico_ipip_mode: "{{ ipip_mode }}"
calico_vxlan_mode: 'Never'
calico_cert_dir: /etc/calico/certs

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@ -4,10 +4,38 @@
that:
- "calico_pool_name is defined"
- "calico_pool_name is match('^[a-zA-Z0-9-_\\\\.]{2,63}$')"
- "ipip_mode is defined"
- "ipip_mode in ['Always', 'CrossSubnet', 'Never']"
msg: "Check variable definitions seems something is wrong"
run_once: yes
msg: "calico_pool_name contains invalid characters"
- name: "Check calico network backend defined correctly"
assert:
that:
- "calico_network_backend in ['bird', 'vxlan', 'none']"
msg: "calico network backend is not 'bird', 'vxlan' or 'none'"
when:
- calico_network_backend is defined
- name: "Check ipip and vxlan mode defined correctly"
assert:
that:
- "calico_ipip_mode in ['Always', 'CrossSubnet', 'Never']"
- "calico_vxlan_mode in ['Always', 'CrossSubnet', 'Never']"
msg: "calico inter host encapsulation mode is not 'Always', 'CrossSubnet' or 'Never'"
- name: "Check ipip and vxlan mode if simultaneously enabled"
assert:
that:
- "calico_vxlan_mode in ['Never']"
msg: "IP in IP and VXLAN mode is mutualy exclusive modes"
when:
- "calico_ipip_mode in ['Always', 'CrossSubnet']"
- name: "Check ipip and vxlan mode if simultaneously enabled"
assert:
that:
- "calico_ipip_mode in ['Never']"
msg: "IP in IP and VXLAN mode is mutualy exclusive modes"
when:
- "calico_vxlan_mode in ['Always', 'CrossSubnet']"
- name: "Get current version of calico cluster version"
shell: "{{ bin_dir }}/calicoctl.sh version | grep 'Cluster Version:' | awk '{ print $3}'"

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@ -140,7 +140,8 @@
},
"spec": {
"cidr": "{{ calico_pool_cidr | default(kube_pods_subnet) }}",
"ipipMode": "{{ ipip_mode }}",
"ipipMode": "{{ calico_ipip_mode }}",
"vxlanMode": "{{ calico_vxlan_mode }}",
"natOutgoing": {{ nat_outgoing|default(false) and not peer_with_router|default(false) }} }} " | {{ bin_dir }}/calicoctl.sh apply -f -
when:
- inventory_hostname == groups['kube-master'][0]
@ -158,7 +159,8 @@
"spec": {
"blockSize": "{{ calico_pool_blocksize | default(kube_network_node_prefix) }}",
"cidr": "{{ calico_pool_cidr | default(kube_pods_subnet) }}",
"ipipMode": "{{ ipip_mode }}",
"ipipMode": "{{ calico_ipip_mode }}",
"vxlanMode": "{{ calico_vxlan_mode }}",
"natOutgoing": {{ nat_outgoing|default(false) and not peer_with_router|default(false) }} }} " | {{ bin_dir }}/calicoctl.sh apply -f -
when:
- inventory_hostname == groups['kube-master'][0]

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@ -15,9 +15,9 @@ data:
# essential.
typha_service_name: "calico-typha"
{% endif %}
{% if calico_network_backend is defined and calico_network_backend == 'none' %}
{% if calico_network_backend is defined %}
cluster_type: "kubespray"
calico_backend: "none"
calico_backend: "{{ calico_network_backend }}"
{% else %}
cluster_type: "kubespray,bgp"
calico_backend: "bird"