Changes for page XWiki (Helm)

Last modified by Itzhak Daniel on 2024/04/29 16:35
From version 10.1
edited by Itzhak Daniel
on 2024/04/28 21:18
Change comment: Uploaded new attachment "Dockerfile", version 1.1
To version 13.1
edited by Itzhak Daniel
on 2024/04/29 00:25
Change comment: There is no comment for this version

Summary

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30 30  
31 31  === Note about Storage ===
32 32  
33 -Behemoth LTD is running an on-prem Kubernetes solution, we (currently?) don't have any shared storage solution ([[ceph>>https://docs.ceph.com/]], [[nfs>>https://github.com/kubernetes-csi/csi-driver-nfs]], [[...>>https://kubernetes.io/docs/concepts/storage/storage-classes/#provisioner]]) , which require two things:
33 +Behemoth LTD is running an on-prem Kubernetes solution, we (currently) don't have any shared storage solution ([[ceph>>https://docs.ceph.com/]], [[nfs>>https://github.com/kubernetes-csi/csi-driver-nfs]], [[...>>https://kubernetes.io/docs/concepts/storage/storage-classes/#provisioner]]) , which require two things from us:
34 34  
35 35  1. Creating the path/loop device prior of creating PV.
36 36  1. The PV is manually created.
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84 84  
85 85  === Deploy ===
86 86  
87 -We're going to deploy XWiki as a [[statefulset>>https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/]], the Database (MySQL) and the App, each will have a volume to store their content.
87 +We're going to deploy XWiki as a [[statefulset>>https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/]] using [[Helm>>https://helm.sh/]], the Database (MySQL) and the App, each will have a volume to store their information. As I mentioned, in our case, we need to perform several additional steps.
88 +
89 +After the path/loop devices were created, create the PVs (only if your cluster doesn't know how to provision storage for itself):
90 +
91 +{{code language="sh" layout="LINENUMBERS" title="# kubectl stdin"}}
92 +kubectl create -f - <<EOF
93 +---
94 +kind: PersistentVolume
95 +apiVersion: v1
96 +metadata:
97 + name: behemoth-xwiki-db
98 + namespace: behemoth-wiki
99 + labels:
100 + type: behemoth-xwiki-db
101 +spec:
102 + storageClassName: behemoth-xwiki-db
103 + capacity:
104 + storage: 5Gi
105 + accessModes:
106 + - ReadWriteOnce
107 + hostPath:
108 + path: "/mnt/kubenernetes/behemoth-xwiki/db"
109 + nodeAffinity:
110 + required:
111 + nodeSelectorTerms:
112 + - matchExpressions:
113 + - key: kubernetes.io/hostname
114 + operator: In
115 + values:
116 + - k8s-uk-2
117 +
118 +---
119 +kind: PersistentVolume
120 +apiVersion: v1
121 +metadata:
122 + name: behemoth-xwiki-www
123 + namespace: behemoth-wiki
124 + labels:
125 + type: behemoth-xwiki-www
126 +spec:
127 + storageClassName: behemoth-xwiki-www
128 + capacity:
129 + storage: 5Gi
130 + accessModes:
131 + - ReadWriteOnce
132 + hostPath:
133 + path: "/mnt/kubenernetes/behemoth-xwiki/www"
134 + nodeAffinity:
135 + required:
136 + nodeSelectorTerms:
137 + - matchExpressions:
138 + - key: kubernetes.io/hostname
139 + operator: In
140 + values:
141 + - k8s-uk-2
142 +EOF
143 +{{/code}}
144 +
145 +This will create 2 PVs that we'll use later. Notice //nodeAffinity//, linking the deployment to a specific node (the pods can run only at that location, as the PV is defined only there).
146 +
147 +Now we can install XWiki's charts (repo) and download it's //values.yaml// file:
148 +
149 +{{code language="sh" layout="LINENUMBERS" title="# Charts and Values"}}
150 +helm repo add xwiki-helm https://xwiki-contrib.github.io/xwiki-helm
151 +helm repo update xwiki-helm
152 +
153 +curl -LO https://raw.githubusercontent.com/xwiki-contrib/xwiki-helm/master/charts/xwiki/values.yaml
154 +{{/code}}
155 +
156 +Modify the values.yaml file, our example has:
157 +
158 +* Using custom image (so it won't run as //root//).
159 +* Increased memory/core usage allowance.
160 +* Running as UID/GID 30001.
161 +* Dropping all capabilities.
162 +* Using MySQL.
163 +* Enabling persistence.
164 +* Ingress (Nginx).
165 +* TLS (Cert manager)
166 +
167 +You can download our example from the attachment area.
168 +
169 +Once you have your custom //values.yaml// file, deploy the app with Helm:
170 +
171 +{{code language="sh" layout="LINENUMBERS" title="# Helm install"}}
172 +helm install --namespace behemoth-wiki --create-namespace \
173 + --values values.yaml \
174 + behemoth-xwiki xwiki-helm/xwiki
175 +{{/code}}
176 +
177 +
88 88  )))
89 89  
90 90  (% class="col-xs-12 col-sm-4" %)
pv_storage.yaml
Author
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1 +XWiki.itzhak
Size
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1 +999 bytes
Content
... ... @@ -1,0 +1,50 @@
1 +---
2 +kind: PersistentVolume
3 +apiVersion: v1
4 +metadata:
5 + name: behemoth-xwiki-db
6 + namespace: behemoth-wiki
7 + labels:
8 + type: behemoth-xwiki-db
9 +spec:
10 + storageClassName: behemoth-xwiki-db
11 + capacity:
12 + storage: 5Gi
13 + accessModes:
14 + - ReadWriteOnce
15 + hostPath:
16 + path: "/mnt/kubenernetes/behemoth-xwiki/db"
17 + nodeAffinity:
18 + required:
19 + nodeSelectorTerms:
20 + - matchExpressions:
21 + - key: kubernetes.io/hostname
22 + operator: In
23 + values:
24 + - k8s-2
25 +
26 +---
27 +kind: PersistentVolume
28 +apiVersion: v1
29 +metadata:
30 + name: behemoth-xwiki-www
31 + namespace: behemoth-wiki
32 + labels:
33 + type: behemoth-xwiki-www
34 +spec:
35 + storageClassName: behemoth-xwiki-www
36 + capacity:
37 + storage: 5Gi
38 + accessModes:
39 + - ReadWriteOnce
40 + hostPath:
41 + path: "/mnt/kubenernetes/behemoth-xwiki/www"
42 + nodeAffinity:
43 + required:
44 + nodeSelectorTerms:
45 + - matchExpressions:
46 + - key: kubernetes.io/hostname
47 + operator: In
48 + values:
49 + - k8s-2
50 +