-
-
Notifications
You must be signed in to change notification settings - Fork 379
/
locals.tf
1042 lines (936 loc) · 41.1 KB
/
locals.tf
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
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
locals {
# ssh_agent_identity is not set if the private key is passed directly, but if ssh agent is used, the public key tells ssh agent which private key to use.
# For terraforms provisioner.connection.agent_identity, we need the public key as a string.
ssh_agent_identity = var.ssh_private_key == null ? var.ssh_public_key : null
# If passed, a key already registered within hetzner is used.
# Otherwise, a new one will be created by the module.
hcloud_ssh_key_id = var.hcloud_ssh_key_id == null ? hcloud_ssh_key.k3s[0].id : var.hcloud_ssh_key_id
# if given as a variable, we want to use the given token. This is needed to restore the cluster
k3s_token = var.k3s_token == null ? random_password.k3s_token.result : var.k3s_token
ccm_version = var.hetzner_ccm_version != null ? var.hetzner_ccm_version : data.github_release.hetzner_ccm[0].release_tag
csi_version = length(data.github_release.hetzner_csi) == 0 ? var.hetzner_csi_version : data.github_release.hetzner_csi[0].release_tag
kured_version = var.kured_version != null ? var.kured_version : data.github_release.kured[0].release_tag
calico_version = length(data.github_release.calico) == 0 ? var.calico_version : data.github_release.calico[0].release_tag
cilium_ipv4_native_routing_cidr = coalesce(var.cilium_ipv4_native_routing_cidr, var.cluster_ipv4_cidr)
additional_k3s_environment = join("\n",
[
for var_name, var_value in var.additional_k3s_environment :
"${var_name}=\"${var_value}\""
]
)
install_additional_k3s_environment = <<-EOT
cat >> /etc/environment <<EOF
${local.additional_k3s_environment}
EOF
set -a; source /etc/environment; set +a;
EOT
install_system_alias = <<-EOT
cat > /etc/profile.d/00-alias.sh <<EOF
alias k=kubectl
EOF
EOT
install_kubectl_bash_completion = <<-EOT
cat > /etc/bash_completion.d/kubectl <<EOF
if command -v kubectl >/dev/null; then
source <(kubectl completion bash)
complete -o default -F __start_kubectl k
fi
EOF
EOT
common_pre_install_k3s_commands = concat(
[
"set -ex",
# rename the private network interface to eth1
"/etc/cloud/rename_interface.sh",
# prepare the k3s config directory
"mkdir -p /etc/rancher/k3s",
# move the config file into place and adjust permissions
"[ -f /tmp/config.yaml ] && mv /tmp/config.yaml /etc/rancher/k3s/config.yaml",
"chmod 0600 /etc/rancher/k3s/config.yaml",
# if the server has already been initialized just stop here
"[ -e /etc/rancher/k3s/k3s.yaml ] && exit 0",
local.install_additional_k3s_environment,
local.install_system_alias,
local.install_kubectl_bash_completion,
],
# User-defined commands to execute just before installing k3s.
var.preinstall_exec,
# Wait for a successful connection to the internet.
["timeout 180s /bin/sh -c 'while ! ping -c 1 ${var.address_for_connectivity_test} >/dev/null 2>&1; do echo \"Ready for k3s installation, waiting for a successful connection to the internet...\"; sleep 5; done; echo Connected'"]
)
common_post_install_k3s_commands = concat(var.postinstall_exec, ["restorecon -v /usr/local/bin/k3s"])
kustomization_backup_yaml = yamlencode({
apiVersion = "kustomize.config.k8s.io/v1beta1"
kind = "Kustomization"
resources = concat(
[
"https://github.com/hetznercloud/hcloud-cloud-controller-manager/releases/download/${local.ccm_version}/ccm-networks.yaml",
"https://github.com/kubereboot/kured/releases/download/${local.kured_version}/kured-${local.kured_version}-dockerhub.yaml",
"https://github.com/rancher/system-upgrade-controller/releases/download/${var.sys_upgrade_controller_version}/system-upgrade-controller.yaml",
"https://github.com/rancher/system-upgrade-controller/releases/download/${var.sys_upgrade_controller_version}/crd.yaml"
],
var.disable_hetzner_csi ? [] : ["hcloud-csi.yaml"],
lookup(local.ingress_controller_install_resources, var.ingress_controller, []),
lookup(local.cni_install_resources, var.cni_plugin, []),
var.enable_longhorn ? ["longhorn.yaml"] : [],
var.enable_csi_driver_smb ? ["csi-driver-smb.yaml"] : [],
var.enable_cert_manager || var.enable_rancher ? ["cert_manager.yaml"] : [],
var.enable_rancher ? ["rancher.yaml"] : [],
var.rancher_registration_manifest_url != "" ? [var.rancher_registration_manifest_url] : []
),
patches = [
{
target = {
group = "apps"
version = "v1"
kind = "Deployment"
name = "system-upgrade-controller"
namespace = "system-upgrade"
}
patch = file("${path.module}/kustomize/system-upgrade-controller.yaml")
},
{
path = "kured.yaml"
},
{
path = "ccm.yaml"
}
]
})
apply_k3s_selinux = ["/sbin/semodule -v -i /usr/share/selinux/packages/k3s.pp"]
swap_node_label = ["node.kubernetes.io/server-swap=enabled"]
k3s_install_command = "curl -sfL https://get.k3s.io | INSTALL_K3S_SKIP_START=true INSTALL_K3S_SKIP_SELINUX_RPM=true %{if var.install_k3s_version == ""}INSTALL_K3S_CHANNEL=${var.initial_k3s_channel}%{else}INSTALL_K3S_VERSION=${var.install_k3s_version}%{endif} INSTALL_K3S_EXEC='%s' sh -"
install_k3s_server = concat(
local.common_pre_install_k3s_commands,
[format(local.k3s_install_command, "server ${var.k3s_exec_server_args}")],
var.disable_selinux ? [] : local.apply_k3s_selinux,
local.common_post_install_k3s_commands
)
install_k3s_agent = concat(
local.common_pre_install_k3s_commands,
[format(local.k3s_install_command, "agent ${var.k3s_exec_agent_args}")],
var.disable_selinux ? [] : local.apply_k3s_selinux,
local.common_post_install_k3s_commands
)
control_plane_nodes = merge([
for pool_index, nodepool_obj in var.control_plane_nodepools : {
for node_index in range(nodepool_obj.count) :
format("%s-%s-%s", pool_index, node_index, nodepool_obj.name) => {
nodepool_name : nodepool_obj.name,
server_type : nodepool_obj.server_type,
location : nodepool_obj.location,
labels : concat(local.default_control_plane_labels, nodepool_obj.swap_size != "" ? local.swap_node_label : [], nodepool_obj.labels),
taints : concat(local.default_control_plane_taints, nodepool_obj.taints),
kubelet_args : nodepool_obj.kubelet_args,
backups : nodepool_obj.backups,
swap_size : nodepool_obj.swap_size,
zram_size : nodepool_obj.zram_size,
index : node_index
selinux : nodepool_obj.selinux
placement_group_compat_idx : nodepool_obj.placement_group_compat_idx,
placement_group : nodepool_obj.placement_group
}
}
]...)
agent_nodes_from_integer_counts = merge([
for pool_index, nodepool_obj in var.agent_nodepools : {
# coalesce(nodepool_obj.count, 0) means we select those nodepools who's size is set by an integer count.
for node_index in range(coalesce(nodepool_obj.count, 0)) :
format("%s-%s-%s", pool_index, node_index, nodepool_obj.name) => {
nodepool_name : nodepool_obj.name,
server_type : nodepool_obj.server_type,
longhorn_volume_size : coalesce(nodepool_obj.longhorn_volume_size, 0),
floating_ip : lookup(nodepool_obj, "floating_ip", false),
location : nodepool_obj.location,
labels : concat(local.default_agent_labels, nodepool_obj.swap_size != "" ? local.swap_node_label : [], nodepool_obj.labels),
taints : concat(local.default_agent_taints, nodepool_obj.taints),
kubelet_args : nodepool_obj.kubelet_args,
backups : lookup(nodepool_obj, "backups", false),
swap_size : nodepool_obj.swap_size,
zram_size : nodepool_obj.zram_size,
index : node_index
selinux : nodepool_obj.selinux
placement_group_compat_idx : nodepool_obj.placement_group_compat_idx,
placement_group : nodepool_obj.placement_group
}
}
]...)
agent_nodes_from_maps_for_counts = merge([
for pool_index, nodepool_obj in var.agent_nodepools : {
# coalesce(nodepool_obj.nodes, {}) means we select those nodepools who's size is set by an integer count.
for node_key, node_obj in coalesce(nodepool_obj.nodes, {}) :
format("%s-%s-%s", pool_index, node_key, nodepool_obj.name) => merge(
{
nodepool_name : nodepool_obj.name,
server_type : nodepool_obj.server_type,
longhorn_volume_size : coalesce(nodepool_obj.longhorn_volume_size, 0),
floating_ip : lookup(nodepool_obj, "floating_ip", false),
location : nodepool_obj.location,
labels : concat(local.default_agent_labels, nodepool_obj.swap_size != "" ? local.swap_node_label : [], nodepool_obj.labels),
taints : concat(local.default_agent_taints, nodepool_obj.taints),
kubelet_args : nodepool_obj.kubelet_args,
backups : lookup(nodepool_obj, "backups", false),
swap_size : nodepool_obj.swap_size,
zram_size : nodepool_obj.zram_size,
selinux : nodepool_obj.selinux,
placement_group_compat_idx : nodepool_obj.placement_group_compat_idx,
placement_group : nodepool_obj.placement_group,
index : floor(tonumber(node_key)),
},
{ for key, value in node_obj : key => value if value != null },
{
labels : concat(local.default_agent_labels, nodepool_obj.swap_size != "" ? local.swap_node_label : [], nodepool_obj.labels, coalesce(node_obj.labels, [])),
taints : concat(local.default_agent_taints, nodepool_obj.taints, coalesce(node_obj.taints, [])),
},
(
node_obj.append_index_to_node_name ? { node_name_suffix : "-${floor(tonumber(node_key))}" } : {}
)
)
}
]...)
agent_nodes = merge(
local.agent_nodes_from_integer_counts,
local.agent_nodes_from_maps_for_counts,
)
use_existing_network = length(var.existing_network_id) > 0
# The first two subnets are respectively the default subnet 10.0.0.0/16 use for potientially anything and 10.1.0.0/16 used for control plane nodes.
# the rest of the subnets are for agent nodes in each nodepools.
network_ipv4_subnets = [for index in range(256) : cidrsubnet(var.network_ipv4_cidr, 8, index)]
# if we are in a single cluster config, we use the default klipper lb instead of Hetzner LB
control_plane_count = sum([for v in var.control_plane_nodepools : v.count])
agent_count = sum([for v in var.agent_nodepools : length(coalesce(v.nodes, {})) + coalesce(v.count, 0)])
autoscaler_max_count = length(var.autoscaler_nodepools) > 0 ? sum([for v in var.autoscaler_nodepools : v.max_nodes]) : 0
is_single_node_cluster = (local.control_plane_count + local.agent_count + local.autoscaler_max_count) == 1
using_klipper_lb = var.enable_klipper_metal_lb || local.is_single_node_cluster
has_external_load_balancer = local.using_klipper_lb || var.ingress_controller == "none"
load_balancer_name = "${var.cluster_name}-${var.ingress_controller}"
ingress_controller_service_names = {
"traefik" = "traefik"
"nginx" = "nginx-ingress-nginx-controller"
"haproxy" = "haproxy-kubernetes-ingress"
}
ingress_controller_install_resources = {
"traefik" = ["traefik_ingress.yaml"]
"nginx" = ["nginx_ingress.yaml"]
"haproxy" = ["haproxy_ingress.yaml"]
}
default_ingress_namespace_mapping = {
"traefik" = "traefik"
"nginx" = "nginx"
"haproxy" = "haproxy"
}
ingress_controller_namespace = var.ingress_target_namespace != "" ? var.ingress_target_namespace : lookup(local.default_ingress_namespace_mapping, var.ingress_controller, "")
ingress_replica_count = (var.ingress_replica_count > 0) ? var.ingress_replica_count : (local.agent_count > 2) ? 3 : (local.agent_count == 2) ? 2 : 1
ingress_max_replica_count = (var.ingress_max_replica_count > local.ingress_replica_count) ? var.ingress_max_replica_count : local.ingress_replica_count
# disable k3s extras
disable_extras = concat(var.enable_local_storage ? [] : ["local-storage"], local.using_klipper_lb ? [] : ["servicelb"], ["traefik"], var.enable_metrics_server ? [] : ["metrics-server"])
# Determine if scheduling should be allowed on control plane nodes, which will be always true for single node clusters and clusters or if scheduling is allowed on control plane nodes
allow_scheduling_on_control_plane = local.is_single_node_cluster ? true : var.allow_scheduling_on_control_plane
# Determine if loadbalancer target should be allowed on control plane nodes, which will be always true for single node clusters or if scheduling is allowed on control plane nodes
allow_loadbalancer_target_on_control_plane = local.is_single_node_cluster ? true : var.allow_scheduling_on_control_plane
# Default k3s node labels
default_agent_labels = concat([], var.automatically_upgrade_k3s ? ["k3s_upgrade=true"] : [])
default_control_plane_labels = concat(local.allow_loadbalancer_target_on_control_plane ? [] : ["node.kubernetes.io/exclude-from-external-load-balancers=true"], var.automatically_upgrade_k3s ? ["k3s_upgrade=true"] : [])
# Default k3s node taints
default_control_plane_taints = concat([], local.allow_scheduling_on_control_plane ? [] : ["node-role.kubernetes.io/control-plane:NoSchedule"])
default_agent_taints = concat([], var.cni_plugin == "cilium" ? ["node.cilium.io/agent-not-ready:NoExecute"] : [])
base_firewall_rules = concat(
var.firewall_ssh_source == null ? [] : [
# Allow all traffic to the ssh port
{
description = "Allow Incoming SSH Traffic"
direction = "in"
protocol = "tcp"
port = var.ssh_port
source_ips = var.firewall_ssh_source
},
],
var.firewall_kube_api_source == null ? [] : [
{
description = "Allow Incoming Requests to Kube API Server"
direction = "in"
protocol = "tcp"
port = "6443"
source_ips = var.firewall_kube_api_source
}
],
!var.restrict_outbound_traffic ? [] : [
# Allow basic out traffic
# ICMP to ping outside services
{
description = "Allow Outbound ICMP Ping Requests"
direction = "out"
protocol = "icmp"
port = ""
destination_ips = ["0.0.0.0/0", "::/0"]
},
# DNS
{
description = "Allow Outbound TCP DNS Requests"
direction = "out"
protocol = "tcp"
port = "53"
destination_ips = ["0.0.0.0/0", "::/0"]
},
{
description = "Allow Outbound UDP DNS Requests"
direction = "out"
protocol = "udp"
port = "53"
destination_ips = ["0.0.0.0/0", "::/0"]
},
# HTTP(s)
{
description = "Allow Outbound HTTP Requests"
direction = "out"
protocol = "tcp"
port = "80"
destination_ips = ["0.0.0.0/0", "::/0"]
},
{
description = "Allow Outbound HTTPS Requests"
direction = "out"
protocol = "tcp"
port = "443"
destination_ips = ["0.0.0.0/0", "::/0"]
},
#NTP
{
description = "Allow Outbound UDP NTP Requests"
direction = "out"
protocol = "udp"
port = "123"
destination_ips = ["0.0.0.0/0", "::/0"]
}
],
!local.using_klipper_lb ? [] : [
# Allow incoming web traffic for single node clusters, because we are using k3s servicelb there,
# not an external load-balancer.
{
description = "Allow Incoming HTTP Connections"
direction = "in"
protocol = "tcp"
port = "80"
source_ips = ["0.0.0.0/0", "::/0"]
},
{
description = "Allow Incoming HTTPS Connections"
direction = "in"
protocol = "tcp"
port = "443"
source_ips = ["0.0.0.0/0", "::/0"]
}
],
var.block_icmp_ping_in ? [] : [
{
description = "Allow Incoming ICMP Ping Requests"
direction = "in"
protocol = "icmp"
port = ""
source_ips = ["0.0.0.0/0", "::/0"]
}
]
)
# create a new firewall list based on base_firewall_rules but with direction-protocol-port as key
# this is needed to avoid duplicate rules
firewall_rules = { for rule in local.base_firewall_rules : format("%s-%s-%s", lookup(rule, "direction", "null"), lookup(rule, "protocol", "null"), lookup(rule, "port", "null")) => rule }
# do the same for var.extra_firewall_rules
extra_firewall_rules = { for rule in var.extra_firewall_rules : format("%s-%s-%s", lookup(rule, "direction", "null"), lookup(rule, "protocol", "null"), lookup(rule, "port", "null")) => rule }
# merge the two lists
firewall_rules_merged = merge(local.firewall_rules, local.extra_firewall_rules)
# convert the merged list back to a list
firewall_rules_list = values(local.firewall_rules_merged)
labels = {
"provisioner" = "terraform",
"engine" = "k3s"
"cluster" = var.cluster_name
}
labels_control_plane_node = {
role = "control_plane_node"
}
labels_control_plane_lb = {
role = "control_plane_lb"
}
labels_agent_node = {
role = "agent_node"
}
cni_install_resources = {
"calico" = ["https://raw.githubusercontent.com/projectcalico/calico/${coalesce(local.calico_version, "v3.27.2")}/manifests/calico.yaml"]
"cilium" = ["cilium.yaml"]
}
cni_install_resource_patches = {
"calico" = ["calico.yaml"]
}
cni_k3s_settings = {
"flannel" = {
disable-network-policy = var.disable_network_policy
flannel-backend = var.enable_wireguard ? "wireguard-native" : "vxlan"
}
"calico" = {
disable-network-policy = true
flannel-backend = "none"
}
"cilium" = {
disable-network-policy = true
flannel-backend = "none"
}
}
etcd_s3_snapshots = length(keys(var.etcd_s3_backup)) > 0 ? merge(
{
"etcd-s3" = true
},
var.etcd_s3_backup) : {}
kubelet_arg = ["cloud-provider=external", "volume-plugin-dir=/var/lib/kubelet/volumeplugins"]
kube_controller_manager_arg = "flex-volume-plugin-dir=/var/lib/kubelet/volumeplugins"
flannel_iface = "eth1"
kube_apiserver_arg = var.authentication_config != "" ? ["authentication-config=/etc/rancher/k3s/authentication_config.yaml"] : []
cilium_values = var.cilium_values != "" ? var.cilium_values : <<EOT
# Enable Kubernetes host-scope IPAM mode (required for K3s + Hetzner CCM)
ipam:
mode: kubernetes
k8s:
requireIPv4PodCIDR: true
# Replace kube-proxy with Cilium
kubeProxyReplacement: true
%{if var.disable_kube_proxy}
# Enable health check server (healthz) for the kube-proxy replacement
kubeProxyReplacementHealthzBindAddr: "0.0.0.0:10256"
%{endif~}
# Access to Kube API Server (mandatory if kube-proxy is disabled)
k8sServiceHost: "127.0.0.1"
k8sServicePort: "6444"
# Set Tunnel Mode or Native Routing Mode (supported by Hetzner CCM Route Controller)
routingMode: "${var.cilium_routing_mode}"
%{if var.cilium_routing_mode == "native"~}
# Set the native routable CIDR
ipv4NativeRoutingCIDR: "${local.cilium_ipv4_native_routing_cidr}"
# Bypass iptables Connection Tracking for Pod traffic (only works in Native Routing Mode)
installNoConntrackIptablesRules: true
%{endif~}
endpointRoutes:
# Enable use of per endpoint routes instead of routing via the cilium_host interface.
enabled: true
loadBalancer:
# Enable LoadBalancer & NodePort XDP Acceleration (direct routing (routingMode=native) is recommended to achieve optimal performance)
acceleration: native
bpf:
# Enable eBPF-based Masquerading ("The eBPF-based implementation is the most efficient implementation")
masquerade: true
%{if var.enable_wireguard}
encryption:
enabled: true
type: wireguard
%{endif~}
%{if var.cilium_egress_gateway_enabled}
egressGateway:
enabled: true
%{endif~}
%{if var.cilium_hubble_enabled}
hubble:
relay:
enabled: true
ui:
enabled: true
metrics:
enabled:
%{for metric in var.cilium_hubble_metrics_enabled~}
- "${metric}"
%{endfor~}
%{endif~}
MTU: 1450
EOT
# Not to be confused with the other helm values, this is used for the calico.yaml kustomize patch
# It also serves as a stub for a potential future use via helm values
calico_values = var.calico_values != "" ? var.calico_values : <<EOT
kind: DaemonSet
apiVersion: apps/v1
metadata:
name: calico-node
namespace: kube-system
labels:
k8s-app: calico-node
spec:
template:
spec:
volumes:
- name: flexvol-driver-host
hostPath:
type: DirectoryOrCreate
path: /var/lib/kubelet/volumeplugins/nodeagent~uds
containers:
- name: calico-node
env:
- name: CALICO_IPV4POOL_CIDR
value: "${var.cluster_ipv4_cidr}"
- name: FELIX_WIREGUARDENABLED
value: "${var.enable_wireguard}"
EOT
longhorn_values = var.longhorn_values != "" ? var.longhorn_values : <<EOT
defaultSettings:
%{if length(var.autoscaler_nodepools) != 0~}
kubernetesClusterAutoscalerEnabled: true
%{endif~}
defaultDataPath: /var/longhorn
persistence:
defaultFsType: ${var.longhorn_fstype}
defaultClassReplicaCount: ${var.longhorn_replica_count}
%{if var.disable_hetzner_csi~}defaultClass: true%{else~}defaultClass: false%{endif~}
EOT
csi_driver_smb_values = var.csi_driver_smb_values != "" ? var.csi_driver_smb_values : <<EOT
EOT
hetzner_csi_values = var.hetzner_csi_values != "" ? var.hetzner_csi_values : <<EOT
EOT
nginx_values = var.nginx_values != "" ? var.nginx_values : <<EOT
controller:
watchIngressWithoutClass: "true"
kind: "Deployment"
replicaCount: ${local.ingress_replica_count}
config:
"use-forwarded-headers": "true"
"compute-full-forwarded-for": "true"
"use-proxy-protocol": "${!local.using_klipper_lb}"
%{if !local.using_klipper_lb~}
service:
annotations:
"load-balancer.hetzner.cloud/name": "${local.load_balancer_name}"
"load-balancer.hetzner.cloud/use-private-ip": "true"
"load-balancer.hetzner.cloud/disable-private-ingress": "true"
"load-balancer.hetzner.cloud/disable-public-network": "${var.load_balancer_disable_public_network}"
"load-balancer.hetzner.cloud/ipv6-disabled": "${var.load_balancer_disable_ipv6}"
"load-balancer.hetzner.cloud/location": "${var.load_balancer_location}"
"load-balancer.hetzner.cloud/type": "${var.load_balancer_type}"
"load-balancer.hetzner.cloud/uses-proxyprotocol": "${!local.using_klipper_lb}"
"load-balancer.hetzner.cloud/algorithm-type": "${var.load_balancer_algorithm_type}"
"load-balancer.hetzner.cloud/health-check-interval": "${var.load_balancer_health_check_interval}"
"load-balancer.hetzner.cloud/health-check-timeout": "${var.load_balancer_health_check_timeout}"
"load-balancer.hetzner.cloud/health-check-retries": "${var.load_balancer_health_check_retries}"
%{if var.lb_hostname != ""~}
"load-balancer.hetzner.cloud/hostname": "${var.lb_hostname}"
%{endif~}
%{endif~}
EOT
haproxy_values = var.haproxy_values != "" ? var.haproxy_values : <<EOT
controller:
kind: "Deployment"
replicaCount: ${local.ingress_replica_count}
ingressClass: null
resources:
requests:
cpu: "${var.haproxy_requests_cpu}"
memory: "${var.haproxy_requests_memory}"
config:
ssl-redirect: "false"
forwarded-for: "true"
%{if !local.using_klipper_lb~}
proxy-protocol: "${join(
", ",
concat(
["127.0.0.1/32", "10.0.0.0/8"],
var.haproxy_additional_proxy_protocol_ips
)
)}"
%{endif~}
service:
type: LoadBalancer
enablePorts:
quic: false
stat: false
prometheus: false
%{if !local.using_klipper_lb~}
annotations:
"load-balancer.hetzner.cloud/name": "${local.load_balancer_name}"
"load-balancer.hetzner.cloud/use-private-ip": "true"
"load-balancer.hetzner.cloud/disable-private-ingress": "true"
"load-balancer.hetzner.cloud/disable-public-network": "${var.load_balancer_disable_public_network}"
"load-balancer.hetzner.cloud/ipv6-disabled": "${var.load_balancer_disable_ipv6}"
"load-balancer.hetzner.cloud/location": "${var.load_balancer_location}"
"load-balancer.hetzner.cloud/type": "${var.load_balancer_type}"
"load-balancer.hetzner.cloud/uses-proxyprotocol": "${!local.using_klipper_lb}"
"load-balancer.hetzner.cloud/algorithm-type": "${var.load_balancer_algorithm_type}"
"load-balancer.hetzner.cloud/health-check-interval": "${var.load_balancer_health_check_interval}"
"load-balancer.hetzner.cloud/health-check-timeout": "${var.load_balancer_health_check_timeout}"
"load-balancer.hetzner.cloud/health-check-retries": "${var.load_balancer_health_check_retries}"
%{if var.lb_hostname != ""~}
"load-balancer.hetzner.cloud/hostname": "${var.lb_hostname}"
%{endif~}
%{endif~}
EOT
traefik_values = var.traefik_values != "" ? var.traefik_values : <<EOT
image:
tag: ${var.traefik_image_tag}
deployment:
replicas: ${local.ingress_replica_count}
globalArguments: []
service:
enabled: true
type: LoadBalancer
%{if !local.using_klipper_lb~}
annotations:
"load-balancer.hetzner.cloud/name": "${local.load_balancer_name}"
"load-balancer.hetzner.cloud/use-private-ip": "true"
"load-balancer.hetzner.cloud/disable-private-ingress": "true"
"load-balancer.hetzner.cloud/disable-public-network": "${var.load_balancer_disable_public_network}"
"load-balancer.hetzner.cloud/ipv6-disabled": "${var.load_balancer_disable_ipv6}"
"load-balancer.hetzner.cloud/location": "${var.load_balancer_location}"
"load-balancer.hetzner.cloud/type": "${var.load_balancer_type}"
"load-balancer.hetzner.cloud/uses-proxyprotocol": "${!local.using_klipper_lb}"
"load-balancer.hetzner.cloud/algorithm-type": "${var.load_balancer_algorithm_type}"
"load-balancer.hetzner.cloud/health-check-interval": "${var.load_balancer_health_check_interval}"
"load-balancer.hetzner.cloud/health-check-timeout": "${var.load_balancer_health_check_timeout}"
"load-balancer.hetzner.cloud/health-check-retries": "${var.load_balancer_health_check_retries}"
%{if var.lb_hostname != ""~}
"load-balancer.hetzner.cloud/hostname": "${var.lb_hostname}"
%{endif~}
%{endif~}
ports:
web:
%{if var.traefik_redirect_to_https~}
redirectTo:
port: websecure
%{endif~}
%{if !local.using_klipper_lb~}
proxyProtocol:
trustedIPs:
- 127.0.0.1/32
- 10.0.0.0/8
%{for ip in var.traefik_additional_trusted_ips~}
- "${ip}"
%{endfor~}
forwardedHeaders:
trustedIPs:
- 127.0.0.1/32
- 10.0.0.0/8
%{for ip in var.traefik_additional_trusted_ips~}
- "${ip}"
%{endfor~}
websecure:
proxyProtocol:
trustedIPs:
- 127.0.0.1/32
- 10.0.0.0/8
%{for ip in var.traefik_additional_trusted_ips~}
- "${ip}"
%{endfor~}
forwardedHeaders:
trustedIPs:
- 127.0.0.1/32
- 10.0.0.0/8
%{for ip in var.traefik_additional_trusted_ips~}
- "${ip}"
%{endfor~}
%{endif~}
%{if var.traefik_additional_ports != ""~}
%{for option in var.traefik_additional_ports~}
${option.name}:
port: ${option.port}
expose:
default: true
exposedPort: ${option.exposedPort}
protocol: TCP
%{if !local.using_klipper_lb~}
proxyProtocol:
trustedIPs:
- 127.0.0.1/32
- 10.0.0.0/8
%{for ip in var.traefik_additional_trusted_ips~}
- "${ip}"
%{endfor~}
forwardedHeaders:
trustedIPs:
- 127.0.0.1/32
- 10.0.0.0/8
%{for ip in var.traefik_additional_trusted_ips~}
- "${ip}"
%{endfor~}
%{endif~}
%{endfor~}
%{endif~}
%{if var.traefik_pod_disruption_budget~}
podDisruptionBudget:
enabled: true
maxUnavailable: 33%
%{endif~}
additionalArguments:
- "--providers.kubernetesingress.ingressendpoint.publishedservice=${local.ingress_controller_namespace}/traefik"
%{for option in var.traefik_additional_options~}
- "${option}"
%{endfor~}
%{if var.traefik_resource_limits~}
resources:
requests:
cpu: "100m"
memory: "50Mi"
limits:
cpu: "300m"
memory: "150Mi"
%{endif~}
%{if var.traefik_autoscaling~}
autoscaling:
enabled: true
minReplicas: ${local.ingress_replica_count}
maxReplicas: ${local.ingress_max_replica_count}
%{endif~}
EOT
rancher_values = var.rancher_values != "" ? var.rancher_values : <<EOT
hostname: "${var.rancher_hostname != "" ? var.rancher_hostname : var.lb_hostname}"
replicas: ${length(local.control_plane_nodes)}
bootstrapPassword: "${length(var.rancher_bootstrap_password) == 0 ? resource.random_password.rancher_bootstrap[0].result : var.rancher_bootstrap_password}"
global:
cattle:
psp:
enabled: false
EOT
cert_manager_values = var.cert_manager_values != "" ? var.cert_manager_values : <<EOT
crds:
enabled: true
keep: true
EOT
kured_options = merge({
"reboot-command" : "/usr/bin/systemctl reboot",
"pre-reboot-node-labels" : "kured=rebooting",
"post-reboot-node-labels" : "kured=done",
"period" : "5m",
"reboot-sentinel" : "/sentinel/reboot-required"
}, var.kured_options)
k3s_registries_update_script = <<EOF
DATE=`date +%Y-%m-%d_%H-%M-%S`
if cmp -s /tmp/registries.yaml /etc/rancher/k3s/registries.yaml; then
echo "No update required to the registries.yaml file"
else
echo "Backing up /etc/rancher/k3s/registries.yaml to /tmp/registries_$DATE.yaml"
cp /etc/rancher/k3s/registries.yaml /tmp/registries_$DATE.yaml
echo "Updated registries.yaml detected, restart of k3s service required"
cp /tmp/registries.yaml /etc/rancher/k3s/registries.yaml
if systemctl is-active --quiet k3s; then
systemctl restart k3s || (echo "Error: Failed to restart k3s. Restoring /etc/rancher/k3s/registries.yaml from backup" && cp /tmp/registries_$DATE.yaml /etc/rancher/k3s/registries.yaml && systemctl restart k3s)
elif systemctl is-active --quiet k3s-agent; then
systemctl restart k3s-agent || (echo "Error: Failed to restart k3s-agent. Restoring /etc/rancher/k3s/registries.yaml from backup" && cp /tmp/registries_$DATE.yaml /etc/rancher/k3s/registries.yaml && systemctl restart k3s-agent)
else
echo "No active k3s or k3s-agent service found"
fi
echo "k3s service or k3s-agent service restarted successfully"
fi
EOF
k3s_config_update_script = <<EOF
DATE=`date +%Y-%m-%d_%H-%M-%S`
if cmp -s /tmp/config.yaml /etc/rancher/k3s/config.yaml; then
echo "No update required to the config.yaml file"
else
if [ -f "/etc/rancher/k3s/config.yaml" ]; then
echo "Backing up /etc/rancher/k3s/config.yaml to /tmp/config_$DATE.yaml"
cp /etc/rancher/k3s/config.yaml /tmp/config_$DATE.yaml
fi
echo "Updated config.yaml detected, restart of k3s service required"
cp /tmp/config.yaml /etc/rancher/k3s/config.yaml
if systemctl is-active --quiet k3s; then
systemctl restart k3s || (echo "Error: Failed to restart k3s. Restoring /etc/rancher/k3s/config.yaml from backup" && cp /tmp/config_$DATE.yaml /etc/rancher/k3s/config.yaml && systemctl restart k3s)
elif systemctl is-active --quiet k3s-agent; then
systemctl restart k3s-agent || (echo "Error: Failed to restart k3s-agent. Restoring /etc/rancher/k3s/config.yaml from backup" && cp /tmp/config_$DATE.yaml /etc/rancher/k3s/config.yaml && systemctl restart k3s-agent)
else
echo "No active k3s or k3s-agent service found"
fi
echo "k3s service or k3s-agent service (re)started successfully"
fi
EOF
k3s_authentication_config_update_script = <<EOF
DATE=`date +%Y-%m-%d_%H-%M-%S`
if cmp -s /tmp/authentication_config.yaml /etc/rancher/k3s/authentication_config.yaml; then
echo "No update required to the authentication_config.yaml file"
else
if [ -f "/etc/rancher/k3s/authentication_config.yaml" ]; then
echo "Backing up /etc/rancher/k3s/authentication_config.yaml to /tmp/authentication_config_$DATE.yaml"
cp /etc/rancher/k3s/authentication_config.yaml /tmp/authentication_config_$DATE.yaml
fi
echo "Updated authentication_config.yaml detected, restart of k3s service required"
cp /tmp/authentication_config.yaml /etc/rancher/k3s/authentication_config.yaml
if systemctl is-active --quiet k3s; then
systemctl restart k3s || (echo "Error: Failed to restart k3s. Restoring /etc/rancher/k3s/authentication_config.yaml from backup" && cp /tmp/authentication_config_$DATE.yaml /etc/rancher/k3s/authentication_config.yaml && systemctl restart k3s)
elif systemctl is-active --quiet k3s-agent; then
systemctl restart k3s-agent || (echo "Error: Failed to restart k3s-agent. Restoring /etc/rancher/k3s/authentication_config.yaml from backup" && cp /tmp/authentication_config_$DATE.yaml /etc/rancher/k3s/authentication_config.yaml && systemctl restart k3s-agent)
else
echo "No active k3s or k3s-agent service found"
fi
echo "k3s service or k3s-agent service (re)started successfully"
fi
EOF
cloudinit_write_files_common = <<EOT
# Script to rename the private interface to eth1 and unify NetworkManager connection naming
- path: /etc/cloud/rename_interface.sh
content: |
#!/bin/bash
set -euo pipefail
sleep 11
INTERFACE=$(ip link show | awk '/^3:/{print $2}' | sed 's/://g')
MAC=$(cat /sys/class/net/$INTERFACE/address)
cat <<EOF > /etc/udev/rules.d/70-persistent-net.rules
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="$MAC", NAME="eth1"
EOF
ip link set $INTERFACE down
ip link set $INTERFACE name eth1
ip link set eth1 up
eth0_connection=$(nmcli -g GENERAL.CONNECTION device show eth0)
nmcli connection modify "$eth0_connection" \
con-name eth0 \
connection.interface-name eth0
eth1_connection=$(nmcli -g GENERAL.CONNECTION device show eth1)
nmcli connection modify "$eth1_connection" \
con-name eth1 \
connection.interface-name eth1
systemctl restart NetworkManager
permissions: "0744"
# Disable ssh password authentication
- content: |
Port ${var.ssh_port}
PasswordAuthentication no
X11Forwarding no
MaxAuthTries ${var.ssh_max_auth_tries}
AllowTcpForwarding no
AllowAgentForwarding no
AuthorizedKeysFile .ssh/authorized_keys
path: /etc/ssh/sshd_config.d/kube-hetzner.conf
# Set reboot method as "kured"
- content: |
REBOOT_METHOD=kured
path: /etc/transactional-update.conf
# Create Rancher repo config
- content: |
[rancher-k3s-common-stable]
name=Rancher K3s Common (stable)
baseurl=https://rpm.rancher.io/k3s/stable/common/microos/noarch
enabled=1
gpgcheck=1
repo_gpgcheck=0
gpgkey=https://rpm.rancher.io/public.key
path: /etc/zypp/repos.d/rancher-k3s-common.repo
# Create the kube_hetzner_selinux.te file, that allows in SELinux to not interfere with various needed services
- path: /root/kube_hetzner_selinux.te
content: |
module kube_hetzner_selinux 1.0;
require {
type kernel_t, bin_t, kernel_generic_helper_t, iscsid_t, iscsid_exec_t, var_run_t, var_lib_t,
init_t, unlabeled_t, systemd_logind_t, systemd_hostnamed_t, container_t,
cert_t, container_var_lib_t, etc_t, usr_t, container_file_t, container_log_t,
container_share_t, container_runtime_exec_t, container_runtime_t, var_log_t, proc_t, io_uring_t, fuse_device_t, http_port_t,
container_var_run_t;
class key { read view };
class file { open read execute execute_no_trans create link lock rename write append setattr unlink getattr watch };
class sock_file { watch write create unlink };
class unix_dgram_socket create;
class unix_stream_socket { connectto read write };
class dir { add_name create getattr link lock read rename remove_name reparent rmdir setattr unlink search write watch };
class lnk_file { read create };
class system module_request;
class filesystem associate;
class bpf map_create;
class io_uring sqpoll;
class anon_inode { create map read write };
class tcp_socket name_connect;
class chr_file { open read write };
}
#============= kernel_generic_helper_t ==============
allow kernel_generic_helper_t bin_t:file execute_no_trans;
allow kernel_generic_helper_t kernel_t:key { read view };
allow kernel_generic_helper_t self:unix_dgram_socket create;
#============= iscsid_t ==============
allow iscsid_t iscsid_exec_t:file execute;
allow iscsid_t var_run_t:sock_file write;
allow iscsid_t var_run_t:unix_stream_socket connectto;
#============= init_t ==============
allow init_t unlabeled_t:dir { add_name remove_name rmdir search };
allow init_t unlabeled_t:lnk_file create;
allow init_t container_t:file { open read };
allow init_t container_file_t:file { execute execute_no_trans };
allow init_t fuse_device_t:chr_file { open read write };
allow init_t http_port_t:tcp_socket name_connect;
#============= systemd_logind_t ==============
allow systemd_logind_t unlabeled_t:dir search;
#============= systemd_hostnamed_t ==============
allow systemd_hostnamed_t unlabeled_t:dir search;
#============= container_t ==============
allow container_t { cert_t container_log_t }:dir read;
allow container_t { cert_t container_log_t }:lnk_file read;
allow container_t cert_t:file { read open };
allow container_t container_var_lib_t:file { create open read write rename lock setattr getattr unlink };
allow container_t etc_t:dir { add_name remove_name write create setattr watch };
allow container_t etc_t:file { create setattr unlink write };
allow container_t etc_t:sock_file { create unlink };
allow container_t usr_t:dir { add_name create getattr link lock read rename remove_name reparent rmdir setattr unlink search write };
allow container_t usr_t:file { append create execute getattr link lock read rename setattr unlink write };
allow container_t container_file_t:file { open read write append getattr setattr lock };
allow container_t container_file_t:sock_file watch;
allow container_t container_log_t:file { open read write append getattr setattr watch };
allow container_t container_share_t:dir { read write add_name remove_name };
allow container_t container_share_t:file { read write create unlink };
allow container_t container_runtime_exec_t:file { read execute execute_no_trans open };
allow container_t container_runtime_t:unix_stream_socket { connectto read write };
allow container_t kernel_t:system module_request;
allow container_t var_log_t:dir { add_name write remove_name watch read };
allow container_t var_log_t:file { create lock open read setattr write unlink getattr };
allow container_t var_lib_t:dir { add_name write read };
allow container_t var_lib_t:file { create lock open read setattr write getattr };
allow container_t proc_t:filesystem associate;
allow container_t self:bpf map_create;
allow container_t self:io_uring sqpoll;
allow container_t io_uring_t:anon_inode { create map read write };
allow container_t container_var_run_t:dir { add_name remove_name write };
allow container_t container_var_run_t:file { create open read rename unlink write };
# Create the k3s registries file if needed
%{if var.k3s_registries != ""}
# Create k3s registries file
- content: ${base64encode(var.k3s_registries)}
encoding: base64
path: /etc/rancher/k3s/registries.yaml
%{endif}
# Apply new DNS config
%{if length(var.dns_servers) > 0}
# Set prepare for manual dns config
- content: |
[main]
dns=none
path: /etc/NetworkManager/conf.d/dns.conf
- content: |
%{for server in var.dns_servers~}
nameserver ${server}
%{endfor}
path: /etc/resolv.conf
permissions: '0644'
%{endif}
EOT
cloudinit_runcmd_common = <<EOT
# ensure that /var uses full available disk size, thanks to btrfs this is easy
- [btrfs, 'filesystem', 'resize', 'max', '/var']
# SELinux permission for the SSH alternative port
%{if var.ssh_port != 22}