* feat: cilium add-mode support
when cni management by kilo is disable, we can use existing cluster's cni setup thanks to add-on mode
https://kilo.squat.ai/docs/introduction#add-on-mode
* feat: manifest example for cilium addon mode
* fix: apply comment from PR review
* fix: add mutex to interface retrieval into flannel addon mode
This commit enhances the Kilo agent internal HTTP server to include
pprof endpoints. For simplicity, this commit migrates the internal
server creation to https://github.com/metalmatze/signal/internalserver,
which allows for easy registration of common internal server
observability endpoints.
Signed-off-by: Lucas Servén Marín <lserven@gmail.com>
* migrate to golang.zx2c4.com/wireguard/wgctrl
This commit introduces the usage of wgctrl.
It avoids the usage of exec calls of the wg command
and parsing the output of `wg show`.
Signed-off-by: leonnicolas <leonloechner@gmx.de>
* vendor wgctrl
Signed-off-by: leonnicolas <leonloechner@gmx.de>
* apply suggestions from code review
Remove wireguard.Enpoint struct and use net.UDPAddr for the resolved
endpoint and addr string (dnsanme:port) if a DN was supplied.
Signed-off-by: leonnicolas <leonloechner@gmx.de>
* pkg/*: use wireguard.Enpoint
This commit introduces the wireguard.Enpoint struct.
It encapsulates a DN name with port and a net.UPDAddr.
The fields are private and only accessible over exported Methods
to avoid accidental modification.
Also iptables.GetProtocol is improved to avoid ipv4 rules being applied
by `ip6tables`.
Signed-off-by: leonnicolas <leonloechner@gmx.de>
* pkg/wireguard/conf_test.go: add tests for Endpoint
Signed-off-by: leonnicolas <leonloechner@gmx.de>
* cmd/kg/main.go: validate port range
Signed-off-by: leonnicolas <leonloechner@gmx.de>
* add suggestions from review
Signed-off-by: leonnicolas <leonloechner@gmx.de>
* pkg/mesh/mesh.go: use Equal func
Implement an Equal func for Enpoint and use it instead of comparing
strings.
Signed-off-by: leonnicolas <leonloechner@gmx.de>
* cmd/kgctl/main.go: check port range
Signed-off-by: leonnicolas <leonloechner@gmx.de>
* vendor
Signed-off-by: leonnicolas <leonloechner@gmx.de>
* pkg/mesh/routes.go: add flag for generic ACCEPT in FORWARD chain
Some linux distros or docker will set the default policy in the FORWARD
chain in the filter table to DROP. With the new ip-tables-forward-rules
flag a generic ACCEPT for all packages going from and to the pod subnet
is added to the FORWARD chain.
Signed-off-by: leonnicolas <leonloechner@gmx.de>
* Update cmd/kg/main.go
Co-authored-by: Lucas Servén Marín <lserven@gmail.com>
* Update cmd/kg/main.go
Co-authored-by: Lucas Servén Marín <lserven@gmail.com>
This commit adds a sub command `webhook` to Kilo.
It will start a https web server that answeres request from a Kubernetes
API server to validate updates and creations of Kilo peers.
It also updates the "Peer Validation" docs to enable users to
install the web hook server and generate the self signed certificates in
the cluster by only applying a manifest.
Signed-off-by: leonnicolas <leonloechner@gmx.de>
Apply suggestions from code review
Co-authored-by: Lucas Servén Marín <lserven@gmail.com>
This commit uses cobra instead of pflags in kg to handle flags in preparation to add a new subcommand
for the webhook server.
Signed-off-by: leonnicolas <leonloechner@gmx.de>
docker: add missing fonts for rasterized graphviz output formats
add missing license header
kg: do not export handlers
use http package for status codes
keep checks for errors in a single line
simplify error message about failed invocation of dot
pass node hostname and subnet to graph handler
use SVG as default format for graph handler
register health handler with HandleFunc
add option for selecting layout to graph handler and using circo as new default
e2e: add tests for HTTP handlers
e2e: fix and simplify handler tests
add should comments to assertions
e2s: use assert_fail instead of assert _not
add missing mime-type header for graph handler
use switch/case statements for validating formats / layouts
e2e: fix handlers tests
Co-authored-by: leonnicolas <60091705+leonnicolas@users.noreply.github.com>
graph-handler: add missing font to Dockerfile
Dockerfile: remove unnecessary font
This commit leaves Noto as the only font package, as one font package is
sufficient for the container.
Signed-off-by: Lucas Servén Marín <lserven@gmail.com>
This commit introduces a new `--resync-period` flag to control how often
the Kilo controllers should reconcile.
Signed-off-by: Lucas Servén Marín <lserven@gmail.com>
This commit makes it possible to specify the Kilo interface name. If the
specified interface exists, it will be used; if it does not exist, Kilo
will create it. If the interface already existed, then it will not be
deleted on shutdown; otherwise Kilo will destroy the interface.
Fixes: https://github.com/squat/kilo/issues/8
Addresses: 1/2 of https://github.com/squat/kilo/issues/17
This commit adds basic support to run in compatibility mode with
Flannel. This allows clusters running Flannel as their principal
networking solution to leverage some advances Kilo features. In certain
Flannel setups, the clusters can even leverage muti-cloud. For this, the
cluster needs to either run in a full mesh, or Flannel needs to use the
API server's external IP address.
This commit enables Kilo to work as an independent networking provider.
This is done by leveraging CNI. Kilo brings the necessary CNI plugins to
operate and takes care of all networking.
Add-on compatibility for Calico, Flannel, etc, will be re-introduced
shortly.
Today, net.Listen will only listen on 127.0.0.1 if localhost is passed
[0]. Listening on `:8080` will open a dualstack socket on OSs that
support it.
[0] https://github.com/golang/go/issues/9334
