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email 2017-07-31 13:23:01 +02:00
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docs/weave.md
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@ -3,60 +3,60 @@ Weave
Weave 2.0.1 is supported by kubespray Weave 2.0.1 is supported by kubespray
Weave be use with [**consensus**](https://www.weave.works/docs/net/latest/ipam/#initialization) mode (default mode) and [**seed**](https://www.weave.works/docs/net/latest/ipam/#initialization) mode Weave uses [**consensus**](https://www.weave.works/docs/net/latest/ipam/#initialization) mode (default mode) and [**seed**](https://www.weave.works/docs/net/latest/ipam/#initialization) mode.
In kubespray, Weave encryption for all communication is supported Weave encryption is supported for all communication
* For use Weave encryption, it's necessary to specify password (if no password specify, no encrytion) * To use Weave encryption, specify a strong password (if no password, no encrytion)
``` ```
# In file ./inventory/group_vars/k8s-cluster.yml # In file ./inventory/group_vars/k8s-cluster.yml
weave_password: EnterPasswordHere weave_password: EnterPasswordHere
``` ```
This password is use in environment variable in weave container. So it's impossible to see it somewhere This password is used to set an environment variable inside weave container.
Weave is deploy by kubernetes with daemonSet Weave is deployed by kubespray using daemonSet
* Check the status of Weave containers * Check the status of Weave containers
``` ```
# On k8s master # From client
kubectl -n kube-system get pods | grep weave kubectl -n kube-system get pods | grep weave
``` ```
* Check status of weave (connection,encryption ...) * Check status of weave (connection,encryption ...) for each node
``` ```
# On node # On nodes
curl http://127.0.0.1:6784/status curl http://127.0.0.1:6784/status
``` ```
* Check parameters of weave * Check parameters of weave for each node
``` ```
# On node # On nodes
ps -aux | grep weaver ps -aux | grep weaver
``` ```
### Consensus mode (default mode) ### Consensus mode (default mode)
This mode is to fixed cluster This mode is best to use on static size cluster
### Seed mode ### Seed mode
This mode is to dynamic cluster This mode is best to use on dynamic size cluster
the seed mode allows multi clouds simultaneously and also hybrid on premise/cloud clusters The seed mode also allows multi-clouds and hybrid on-premise/cloud clusters deployement.
* Change consensus mode to seed mode * Switch from consensus mode to seed mode
``` ```
# In file ./inventory/group_vars/k8s-cluster.yml # In file ./inventory/group_vars/k8s-cluster.yml
weave_mode_seed: true weave_mode_seed: true
``` ```
This two variables are use to have automaticaly dynamic cluster (**/!\ do not manually change these values**) These two variables are only used when `weave_mode_seed` is set to `true` (**/!\ do not manually change these values**)
``` ```
# In file ./inventory/group_vars/k8s-cluster.yml # In file ./inventory/group_vars/k8s-cluster.yml
@ -64,10 +64,10 @@ weave_seed: uninitialized
weave_peers: uninitialized weave_peers: uninitialized
``` ```
The first variable, `weave_seed`, allows to save the first or firsts nodes of the weave network The first variable, `weave_seed`, saves the firsts nodes of the weave network
The seconde variable, `weave_peers`, allows to save IP of all nodes of the weave network The seconde variable, `weave_peers`, saves IP of all nodes of the weave network
these two variables allows to connecte a new node to the weave network. this new node need to know the first node (seed) and list of IP to all node of network These two variables are used to connect a new node to the weave network. The new node needs to know the firsts nodes (seed) and the list of IPs of all nodes.
For reset these variables set there values to `uninitialized` To reset these variables and reset the weave network set them to `uninitialized`