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Working etherpad: https://etherpad.wikimedia.org/p/k8s-1.26-to-1.27-upgrade

Prepare packages

[x] send and merge a patch similar to https://gerrit.wikimedia.org/r/c/operations/puppet/+/1058560 but for the destination version
[x] check that the packages show up in https://apt.wikimedia.org/wikimedia/pool/thirdparty/

Toolsbeta

get list of nodes

 root@toolsbeta-test-k8s-control-10:~# for node in $(kubectl get nodes -o json | jq '.items[].metadata.name' -r); do echo "* [] $node"; done

prep

[x] run prepare upgrade cookbook

 ~ $ sudo cookbook wmcs.toolforge.k8s.prepare_upgrade --cluster-name toolsbeta --src-version 1.26.15 --dst-version 1.27.16 --task-id <id_of_task>

[x] downtime project via https://prometheus-alerts.wmcloud.org/?q=team%3Dwmcs
[x] update topic on -cloud

control nodes

run upgrade node cookbook

 sudo cookbook wmcs.toolforge.k8s.worker.upgrade --task-id <id_of_task> --src-version 1.26.15 --dst-version 1.27.16 --cluster-name toolsbeta --hostname <control_node_name>

check that services start healthy
depool control-<x> and <y> via haproxy, check that control-<z> is still doing ok

 ssh tools-test-k8s-haproxy-6.toolsbeta.eqiad1.wikimedia.cloud
 sudo puppet agent --disable "<user> k8s upgrade"
 sudo vim /etc/haproxy/conf.d/k8s-api-servers.cfg
 sudo systemctl reload haproxy

check:

 echo "show stat" | sudo socat stdio /run/haproxy/haproxy.sock | grep k8s-api

revert:

 sudo puppet agent --enable
 sudo run-puppet-agent
 sudo systemctl reload haproxy

toolsbeta-test-k8s-control-10

[x] run upgrade node cookbook
[x] check that services start healthy
[x] depool control-11 and -12 via haproxy, check that control-10 is still doing ok - not done as we have to upgrade all controls at once

toolsbeta-test-k8s-control-11

[x] run upgrade node cookbook
[x] check that services start healthy
[x] depool control-12 and -10 via haproxy, check that control-11 is still doing ok - not done as we have to upgrade all controls at once

toolsbeta-test-k8s-control-12

[x] run upgrade node cookbook
[x] check that services start healthy
[x] depool control-10 and -11 via haproxy, check that control-12 is still doing ok - not done as we have to upgrade all controls at once

worker nodes

run upgrade node cookbook for each

 sudo cookbook wmcs.toolforge.k8s.worker.upgrade --task-id <id_of_task> --src-version 1.26.15 --dst-version 1.27.16 --cluster-name toolsbeta --hostname <worker_node_name>

[x] toolsbeta-test-k8s-worker-nfs-5
[x] toolsbeta-test-k8s-worker-nfs-7
[x] toolsbeta-test-k8s-worker-nfs-8
[x] toolsbeta-test-k8s-worker-nfs-9
[x] toolsbeta-test-k8s-worker-12
[x] toolsbeta-test-k8s-worker-13

ingress nodes

run upgrade node cookbook for each

 sudo cookbook wmcs.toolforge.k8s.worker.upgrade --task-id <id_of_task> --src-version 1.26.15 --dst-version 1.27.16 --cluster-name toolsbeta --hostname <worker_node_name>

[x] toolsbeta-test-k8s-ingress-10
[x] toolsbeta-test-k8s-ingress-11
[x] toolsbeta-test-k8s-ingress-9

cleanup

[x] remove downtime
[x] revert topic change

Tools

get list of nodes

 root@tools-k8s-control-7:~# for node in $(kubectl get nodes -o json | jq '.items[].metadata.name' -r); do echo "* [] $node"; done

prep

[x] run prepare upgrade cookbook

 ~ $ sudo cookbook wmcs.toolforge.k8s.prepare_upgrade --cluster-name tools --src-version 1.26.15 --dst-version 1.27.16 --task-id <id_of_task>

[x] downtime project via https://prometheus-alerts.wmcloud.org/?q=team%3Dwmcs
[x] update topic on -cloud

control nodes

run upgrade node cookbook

 sudo cookbook wmcs.toolforge.k8s.worker.upgrade --task-id <id_of_task> --src-version 1.26.15 --dst-version 1.27.16 --cluster-name tools --hostname <control_node_name>

check that services start healthy
depool control-<x> and <y> via haproxy, check that control-<z> is still doing ok

 ssh tools-k8s-haproxy-5.tools.eqiad1.wikimedia.cloud
 sudo puppet agent --disable "<user> k8s upgrade"
 sudo nano /etc/haproxy/conf.d/k8s-api-servers.cfg
 sudo systemctl reload haproxy

check:

 echo "show stat" | sudo socat stdio /run/haproxy/haproxy.sock | grep k8s-api

revert:

 sudo puppet agent --enable
 sudo run-puppet-agent
 sudo systemctl reload haproxy

tools-k8s-control-7

[x] run upgrade node cookbook
[x] check that services start healthy
[x] depool control-8 and -9 via haproxy, check that control-7 is still doing ok

tools-k8s-control-8

[x] run upgrade node cookbook
[x] check that services start healthy
[x] depool control-7 and -9 via haproxy, check that control-8 is still doing ok

tools-k8s-control-9

[x] run upgrade node cookbook
[x] check that services start healthy
[x] depool control-7 and -8 via haproxy, check that control-9 is still doing ok

worker nodes

run upgrade node cookbook for each. it's ok to do a couple in parallel

 sudo cookbook wmcs.toolforge.k8s.worker.upgrade --task-id <id_of_task> --src-version 1.26.15 --dst-version 1.27.16 --cluster-name tools --hostname <worker_node_name>

[x] tools-k8s-worker-102
[x] tools-k8s-worker-103
[x] tools-k8s-worker-105
[x] tools-k8s-worker-106
[x] tools-k8s-worker-107
[x] tools-k8s-worker-108
[x] tools-k8s-worker-nfs-1
[x] tools-k8s-worker-nfs-10
[x] tools-k8s-worker-nfs-11
[x] tools-k8s-worker-nfs-12
[x] tools-k8s-worker-nfs-13
[x] tools-k8s-worker-nfs-14
[x] tools-k8s-worker-nfs-16
[x] tools-k8s-worker-nfs-17
[x] tools-k8s-worker-nfs-19
[x] tools-k8s-worker-nfs-2
[x] tools-k8s-worker-nfs-21
[x] tools-k8s-worker-nfs-22
[x] tools-k8s-worker-nfs-23
[x] tools-k8s-worker-nfs-24
[x] tools-k8s-worker-nfs-26
[x] tools-k8s-worker-nfs-27
[x] tools-k8s-worker-nfs-3
[x] tools-k8s-worker-nfs-32
[x] tools-k8s-worker-nfs-33
[x] tools-k8s-worker-nfs-34
[x] tools-k8s-worker-nfs-35
[x] tools-k8s-worker-nfs-36
[x] tools-k8s-worker-nfs-37
[x] tools-k8s-worker-nfs-38
[x] tools-k8s-worker-nfs-39
[x] tools-k8s-worker-nfs-40
[x] tools-k8s-worker-nfs-41
[x] tools-k8s-worker-nfs-42
[x] tools-k8s-worker-nfs-43
[x] tools-k8s-worker-nfs-44
[x] tools-k8s-worker-nfs-45
[x] tools-k8s-worker-nfs-46
[x] tools-k8s-worker-nfs-47
[x] tools-k8s-worker-nfs-48
[x] tools-k8s-worker-nfs-5
[x] tools-k8s-worker-nfs-50
[x] tools-k8s-worker-nfs-53
[x] tools-k8s-worker-nfs-54
[x] tools-k8s-worker-nfs-55
[x] tools-k8s-worker-nfs-57
[x] tools-k8s-worker-nfs-58
[x] tools-k8s-worker-nfs-61
[x] tools-k8s-worker-nfs-65
[x] tools-k8s-worker-nfs-66
[x] tools-k8s-worker-nfs-67
[x] tools-k8s-worker-nfs-68
[x] tools-k8s-worker-nfs-69
[x] tools-k8s-worker-nfs-7
[x] tools-k8s-worker-nfs-70
[x] tools-k8s-worker-nfs-71
[x] tools-k8s-worker-nfs-72
[x] tools-k8s-worker-nfs-73
[x] tools-k8s-worker-nfs-74
[x] tools-k8s-worker-nfs-75
[x] tools-k8s-worker-nfs-76
[x] tools-k8s-worker-nfs-8
[x] tools-k8s-worker-nfs-9

ingress nodes

[x] kubectl -n ingress-nginx-gen2 scale deployment ingress-nginx-gen2-controller --replicas=2

run upgrade node cookbook for each:

[x] tools-k8s-ingress-7
[x] tools-k8s-ingress-8
[x] tools-k8s-ingress-9
[x] revert afterwards: kubectl -n ingress-nginx-gen2 scale deployment ingress-nginx-gen2-controller --replicas=3

cleanup

[x] remove downtime
[x] revert topic change