blob: 932b4639b39c88d5653f8523af9d88c3b05ecc88 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
import ../make-test-python.nix ({ pkgs, lib, k3s, ... }:
let
imageEnv = pkgs.buildEnv {
name = "k3s-pause-image-env";
paths = with pkgs; [ tini bashInteractive coreutils socat ];
};
pauseImage = pkgs.dockerTools.streamLayeredImage {
name = "test.local/pause";
tag = "local";
contents = imageEnv;
config.Entrypoint = [ "/bin/tini" "--" "/bin/sleep" "inf" ];
};
# A daemonset that responds 'server' on port 8000
networkTestDaemonset = pkgs.writeText "test.yml" ''
apiVersion: apps/v1
kind: DaemonSet
metadata:
name: test
labels:
name: test
spec:
selector:
matchLabels:
name: test
template:
metadata:
labels:
name: test
spec:
containers:
- name: test
image: test.local/pause:local
imagePullPolicy: Never
resources:
limits:
memory: 20Mi
command: ["socat", "TCP4-LISTEN:8000,fork", "EXEC:echo server"]
'';
tokenFile = pkgs.writeText "token" "p@s$w0rd";
in
{
name = "${k3s.name}-multi-node";
nodes = {
server = { pkgs, ... }: {
environment.systemPackages = with pkgs; [ gzip jq ];
# k3s uses enough resources the default vm fails.
virtualisation.memorySize = 1536;
virtualisation.diskSize = 4096;
services.k3s = {
inherit tokenFile;
enable = true;
role = "server";
package = k3s;
clusterInit = true;
extraFlags = builtins.toString [
"--disable" "coredns"
"--disable" "local-storage"
"--disable" "metrics-server"
"--disable" "servicelb"
"--disable" "traefik"
"--node-ip" "192.168.1.1"
"--pause-image" "test.local/pause:local"
];
};
networking.firewall.allowedTCPPorts = [ 2379 2380 6443 ];
networking.firewall.allowedUDPPorts = [ 8472 ];
networking.firewall.trustedInterfaces = [ "flannel.1" ];
networking.useDHCP = false;
networking.defaultGateway = "192.168.1.1";
networking.interfaces.eth1.ipv4.addresses = pkgs.lib.mkForce [
{ address = "192.168.1.1"; prefixLength = 24; }
];
};
server2 = { pkgs, ... }: {
environment.systemPackages = with pkgs; [ gzip jq ];
virtualisation.memorySize = 1536;
virtualisation.diskSize = 4096;
services.k3s = {
inherit tokenFile;
enable = true;
serverAddr = "https://192.168.1.1:6443";
clusterInit = false;
extraFlags = builtins.toString [
"--disable" "coredns"
"--disable" "local-storage"
"--disable" "metrics-server"
"--disable" "servicelb"
"--disable" "traefik"
"--node-ip" "192.168.1.3"
"--pause-image" "test.local/pause:local"
];
};
networking.firewall.allowedTCPPorts = [ 2379 2380 6443 ];
networking.firewall.allowedUDPPorts = [ 8472 ];
networking.firewall.trustedInterfaces = [ "flannel.1" ];
networking.useDHCP = false;
networking.defaultGateway = "192.168.1.3";
networking.interfaces.eth1.ipv4.addresses = pkgs.lib.mkForce [
{ address = "192.168.1.3"; prefixLength = 24; }
];
};
agent = { pkgs, ... }: {
virtualisation.memorySize = 1024;
virtualisation.diskSize = 2048;
services.k3s = {
inherit tokenFile;
enable = true;
role = "agent";
serverAddr = "https://192.168.1.3:6443";
extraFlags = lib.concatStringsSep " " [
"--pause-image" "test.local/pause:local"
"--node-ip" "192.168.1.2"
];
};
networking.firewall.allowedTCPPorts = [ 6443 ];
networking.firewall.allowedUDPPorts = [ 8472 ];
networking.firewall.trustedInterfaces = [ "flannel.1" ];
networking.useDHCP = false;
networking.defaultGateway = "192.168.1.2";
networking.interfaces.eth1.ipv4.addresses = pkgs.lib.mkForce [
{ address = "192.168.1.2"; prefixLength = 24; }
];
};
};
meta = with pkgs.lib.maintainers; {
maintainers = [ euank ];
};
testScript = ''
machines = [server, server2, agent]
for m in machines:
m.start()
m.wait_for_unit("k3s")
is_aarch64 = "${toString pkgs.stdenv.isAarch64}" == "1"
# wait for the agent to show up
server.wait_until_succeeds("k3s kubectl get node agent")
for m in machines:
# Fix-Me: Tests fail for 'aarch64-linux' as: "CONFIG_CGROUP_FREEZER: missing (fail)"
if not is_aarch64:
m.succeed("k3s check-config")
m.succeed(
"${pauseImage} | k3s ctr image import -"
)
server.succeed("k3s kubectl cluster-info")
# Also wait for our service account to show up; it takes a sec
server.wait_until_succeeds("k3s kubectl get serviceaccount default")
# Now create a pod on each node via a daemonset and verify they can talk to each other.
server.succeed("k3s kubectl apply -f ${networkTestDaemonset}")
server.wait_until_succeeds(f'[ "$(k3s kubectl get ds test -o json | jq .status.numberReady)" -eq {len(machines)} ]')
# Get pod IPs
pods = server.succeed("k3s kubectl get po -o json | jq '.items[].metadata.name' -r").splitlines()
pod_ips = [server.succeed(f"k3s kubectl get po {name} -o json | jq '.status.podIP' -cr").strip() for name in pods]
# Verify each server can ping each pod ip
for pod_ip in pod_ips:
server.succeed(f"ping -c 1 {pod_ip}")
agent.succeed(f"ping -c 1 {pod_ip}")
# Verify the pods can talk to each other
resp = server.wait_until_succeeds(f"k3s kubectl exec {pods[0]} -- socat TCP:{pod_ips[1]}:8000 -")
assert resp.strip() == "server"
resp = server.wait_until_succeeds(f"k3s kubectl exec {pods[1]} -- socat TCP:{pod_ips[0]}:8000 -")
assert resp.strip() == "server"
# Cleanup
server.succeed("k3s kubectl delete -f ${networkTestDaemonset}")
for m in machines:
m.shutdown()
'';
})
|
