97 lines
4.2 KiB
Markdown
97 lines
4.2 KiB
Markdown
|
Configurable Parameters in Kargo
|
||
|
|
================================
|
||
|
|
|
||
|
|
#### Generic Ansible variables
|
||
|
|
|
||
|
|
You can view facts gathered by Ansible automatically
|
||
|
|
[here](http://docs.ansible.com/ansible/playbooks_variables.html#information-discovered-from-systems-facts).
|
||
|
|
|
||
|
|
Some variables of note include:
|
||
|
|
|
||
|
|
* *ansible_user*: user to connect to via SSH
|
||
|
|
* *ansible_default_ipv4.address*: IP address Ansible automatically chooses.
|
||
|
|
Generated based on the output from the command ``ip -4 route get 8.8.8.8``
|
||
|
|
|
||
|
|
#### Common vars that are used in Kargo
|
||
|
|
|
||
|
|
* *calico_version* - Specify version of Calico to use
|
||
|
|
* *calico_cni_version* - Specify version of Calico CNI plugin to use
|
||
|
|
* *docker_version* - Specify version of Docker to used (should be quoted
|
||
|
|
string)
|
||
|
|
* *etcd_version* - Specify version of ETCD to use
|
||
|
|
* *ipip* - Enables Calico ipip encapsulation by default
|
||
|
|
* *hyperkube_image_repo* - Specify the Docker repository where Hyperkube
|
||
|
|
resides
|
||
|
|
* *hyperkube_image_tag* - Specify the Docker tag where Hyperkube resides
|
||
|
|
* *kube_network_plugin* - Changes k8s plugin to Calico
|
||
|
|
* *kube_proxy_mode* - Changes k8s proxy mode to iptables mode
|
||
|
|
* *kube_version* - Specify a given Kubernetes hyperkube version
|
||
|
|
* *searchdomains* - Array of DNS domains to search when looking up hostnames
|
||
|
|
* *nameservers* - Array of nameservers to use for DNS lookup
|
||
|
|
|
||
|
|
#### Addressing variables
|
||
|
|
|
||
|
|
* *ip* - IP to use for binding services (host var)
|
||
|
|
* *access_ip* - IP for other hosts to use to connect to. Often required when
|
||
|
|
deploying from a cloud, such as OpenStack or GCE and you have separate
|
||
|
|
public/floating and private IPs.
|
||
|
|
* *ansible_default_ipv4.address* - Not Kargo-specific, but it is used if ip
|
||
|
|
and access_ip are undefined
|
||
|
|
* *loadbalancer_apiserver* - If defined, all hosts will connect to this
|
||
|
|
address instead of localhost for kube-masters and kube-master[0] for
|
||
|
|
kube-nodes. See more details in the
|
||
|
|
[HA guide](https://github.com/kubernetes-incubator/kargo/blob/master/docs/ha-mode.md).
|
||
|
|
* *loadbalancer_apiserver_localhost* - If enabled, all hosts will connect to
|
||
|
|
the apiserver internally load balanced endpoint. See more details in the
|
||
|
|
[HA guide](https://github.com/kubernetes-incubator/kargo/blob/master/docs/ha-mode.md).
|
||
|
|
|
||
|
|
#### Cluster variables
|
||
|
|
|
||
|
|
Kubernetes needs some parameters in order to get deployed. These are the
|
||
|
|
following default cluster paramters:
|
||
|
|
|
||
|
|
* *cluster_name* - Name of cluster (default is cluster.local)
|
||
|
|
* *domain_name* - Name of cluster DNS domain (default is cluster.local)
|
||
|
|
* *kube_network_plugin* - Plugin to use for container networking
|
||
|
|
* *kube_service_addresses* - Subnet for cluster IPs (default is
|
||
|
|
10.233.0.0/18). Must not overlap with kube_pods_subnet
|
||
|
|
* *kube_pods_subnet* - Subnet for Pod IPs (default is 10.233.64.0/18). Must not
|
||
|
|
overlap with kube_service_addresses.
|
||
|
|
* *kube_network_node_prefix* - Subnet allocated per-node for pod IPs. Remainin
|
||
|
|
bits in kube_pods_subnet dictates how many kube-nodes can be in cluster.
|
||
|
|
* *dns_setup* - Enables dnsmasq
|
||
|
|
* *dns_server* - Cluster IP for dnsmasq (default is 10.233.0.2)
|
||
|
|
* *skydns_server* - Cluster IP for KubeDNS (default is 10.233.0.3)
|
||
|
|
* *cloud_provider* - Enable extra Kubelet option if operating inside GCE or
|
||
|
|
OpenStack (default is unset)
|
||
|
|
* *kube_hostpath_dynamic_provisioner* - Required for use of PetSets type in
|
||
|
|
Kubernetes
|
||
|
|
|
||
|
|
#### DNS variables
|
||
|
|
|
||
|
|
By default, dnsmasq gets set up with 8.8.8.8 as an upstream DNS server and all
|
||
|
|
other settings from your existing /etc/resolv.conf are lost. Set the following
|
||
|
|
variables to match your requirements.
|
||
|
|
|
||
|
|
* *upstream_dns_servers* - Array of upstream DNS servers configured on host in
|
||
|
|
addition to Kargo deployed DNS
|
||
|
|
* *nameservers* - Array of DNS servers configured for use in dnsmasq
|
||
|
|
* *searchdomains* - Array of up to 4 search domains
|
||
|
|
* *skip_dnsmasq* - Don't set up dnsmasq (use only KubeDNS)
|
||
|
|
|
||
|
|
For more information, see [DNS
|
||
|
|
Stack](https://github.com/kubernetes-incubator/kargo/blob/master/docs/dns-stack.md).
|
||
|
|
|
||
|
|
#### Other service variables
|
||
|
|
|
||
|
|
* *docker_options* - Commonly used to set
|
||
|
|
``--insecure-registry=myregistry.mydomain:5000``
|
||
|
|
* *http_proxy/https_proxy/no_proxy* - Proxy variables for deploying behind a
|
||
|
|
proxy
|
||
|
|
|
||
|
|
#### User accounts
|
||
|
|
|
||
|
|
Kargo sets up two Kubernetes accounts by default: ``root`` and ``kube``. Their
|
||
|
|
passwords default to changeme. You can set this by changing ``kube_api_pwd``.
|
||
|
|
|