Red Hat Advanced Cluster Management
CLOUD & DEVOPS
Red Hat Advanced Cluster Management
event 01/06/2023
Advanced management of multi-cluster Kubernetes and disaster recovery solutions
At Extra Red, we truly believe in the values of sharing, disseminating knowledge, and continuous training. That's why every month we organize an event called the Red Symposium, where we talk about a bit of everything, from projects to innovative technologies we are working on or experimenting with.
Thursday, May 18th was a great opportunity to have our own Tommaso Macchioni and Nicolò Tumino, respectively DevOps Engineer and Cloud System Engineer, talk about a very interesting tool for multi-cloud management with Red Hat Openshift as well as vanilla Kubernetes: Red Hat Advanced Cluster Management for Kubernetes.
RHACM is a solution that allows controlling Kubernetes clusters and applications from a single console equipped with integrated security policies. In particular, it enables the creation, update, and deletion of Kubernetes clusters deployed across multiple public and private clouds, the deployment of legacy and cloud-native applications, ensuring security compliance, and consequently reducing operational costs.
Tommaso and Nicolò showed us specifically how we are managing multi-clouds with gitOps techniques using RHACM, and how we are handling disaster recovery of dedicated clusters with very refined and interesting policies.
RHACM is one of the tools that Red Hat is heavily focusing on, as the topic of multi-cloud and its subsequent management is becoming increasingly urgent in the enterprise services landscape. Some of its features are still in Tech Preview, and we are already experimenting with them in order to promptly and successfully offer them to our clients.
Failed to "?eval" string with this error: ---begin-message--- Syntax error in ?eval-ed string in line 1, column 463: Lexical error: encountered "u" (117), after "\"Extra Red \\". ---end-message--- The failing expression: ==> entitiesListJson?eval [in template "20097#20123#43230" at line 59, column 29] ---- FTL stack trace ("~" means nesting-related): - Failed at: #assign entities = entitiesListJson?eval [in template "20097#20123#43230" at line 59, column 9] ----
1<#-- Articoli in evidenza ADT -->
2<#assign portletBackground = "bg-red-white" />
3<#list portletPreferences?keys as key>
4 <#if key=="portletBackground">
5 <#assign portletBackground=portletPreferences[key]?first />
6 </#if>
7</#list>
8
9<#assign assetCategoryPropertyLocalService = serviceLocator.findService("com.liferay.asset.category.property.service.AssetCategoryPropertyLocalService") />
10<#assign categoryService = serviceLocator.findService("it.extrared.redweb.commons.service.CategoryService") />
11<#assign assetEntryLocalService=serviceLocator.findService("com.liferay.asset.kernel.service.AssetEntryLocalService") />
12<#assign dlFileEntryService = serviceLocator.findService('com.liferay.document.library.kernel.service.DLFileEntryService') />
13<#assign otherArticles = languageUtil.get(locale, "other-articles") />
14<#assign readMore = languageUtil.get(locale, "read-all") />
15
16<#assign redSimilarJournalArticle = serviceLocator.findService("it.extrared.redweb.commons.service.SimilarJournalArticle") />
17<#assign journalArticleLocalService = serviceLocator.findService("com.liferay.journal.service.JournalArticleLocalService") />
18<#assign dlAppServiceUtil = serviceLocator.findService("com.liferay.document.library.kernel.service.DLAppService")/>
19
20<#assign article = "" />
21<#assign urlTitle = "" />
22
23<#assign dirtyUrlTitle = themeDisplay.getURLCurrent() />
24<#assign curPage = 1 />
25
26<#if dirtyUrlTitle?contains("redirect")>
27 <#assign namespace = "_" + paramUtil.getString(request, "p_p_id") />
28 <#assign currentUrl = "_" + paramUtil.getString(request, namespace + "_redirect") />
29 <#assign urlTitle = currentUrl?split("/")?last />
30 <#assign curPage = paramUtil.getString(request, namespace + "_cur")/>
31<#elseif dirtyUrlTitle?contains("?wkrh___tabs1=properties")>
32 <#assign last = themeDisplay.getURLCurrent()?split("/")?last />
33 <#assign urlTitle = last?substring(0, last?index_of('?wkrh___tabs1=properties')) />
34<#elseif dirtyUrlTitle?contains("?")>
35 <#assign last = themeDisplay.getURLCurrent()?split("/")?last />
36 <#assign urlTitle = last?substring(0, last?index_of('?')) />
37<#else>
38 <#assign urlTitle = themeDisplay.getURLCurrent()?split("/")?last />
39</#if>
40
41
42<#assign logfactory = staticUtil["com.liferay.portal.kernel.log.LogFactoryUtil"] />
43<#assign log = logfactory.getLog("FreemarkerLog") />
44${log.info("urlTitle: " + urlTitle)}
45
46<#attempt>
47 <#assign article = journalArticleLocalService.getArticleByUrlTitle(groupId, urlTitle) />
48<#recover>
49</#attempt>
50
51<#assign entitiesListJson = "" />
52
53<#if article?? && article?has_content>
54 <#assign entitiesListJson = redSimilarJournalArticle.getSimilarJournalArticlesWithConfig(portletPreferences, article.articleId, groupId, false, curPage?number) />
55</#if>
56
57
58<#if entitiesListJson?? && entitiesListJson?has_content>
59 <#assign entities = entitiesListJson?eval />
60</#if>
61
62<#assign noResult = languageUtil.get(locale, "no-result") />
63
64<#if entities?has_content && entities?size gt 0>
65 <section class="container-fluid bg5percent">
66 <div class="swiper container ">
67 <p class="mb-5 text-muted text-uppercase">${otherArticles}</p>
68 <div class="swiper-wrapper align-items-center pt-lg-5 mb-lg-5">
69 <#list entities?keys as k>
70 <#assign entitiesGroup=entities[k] />
71 <#if entitiesGroup?size gt 0>
72 <#list entitiesGroup as array>
73 <div class="swiper-slide">
74 <#assign urlImage = "" />
75 <#assign altImage = "" />
76 <#if array["image"]?? && array["image"]?has_content>
77 <#assign docVal=array["image"]?eval />
78 <#if docVal.url?? && docVal.url?has_content>
79 <#assign urlImage = docVal.url />
80 </#if>
81 <#assign fileEntryId = docVal.fileEntryId />
82 </#if>
83
84 <#if docVal.title?? && docVal.title?has_content>
85 <#assign altImage = docVal.title />
86 </#if>
87
88 <#assign titolo = array["articleTitle"] />
89 <#assign categories = array["categoriesString"] />
90 <#assign displayPage = array["displayPage"] />
91 <#assign assetEntryId = array["assetEntryId"] />
92 <#assign assetEntry = assetEntryLocalService.getEntry(assetEntryId) />
93 <#assign categoriesList = assetEntry.getCategories() />
94
95 <div class="col-lg-9 col-9 col-sm-9 p-0">
96 <@adaptive_media_image["img"] fileVersion=dlAppServiceUtil.getFileEntry(fileEntryId?number).getFileVersion() class="mb-4" width="100%" height="auto" alt="${altImage}"/>
97 <#--
98 <img width="100%" class="mb-4" height="auto" src="${urlImage}" alt="${altImage}" title="${titolo}">
99 -->
100 </div>
101 <div class="card-body pt-2">
102 <#if categoriesList?? && categoriesList?has_content>
103 <div class="card-subtitle text-muted">
104 <#assign categoriesString = "" />
105 <#list categoriesList as c>
106 <#assign hasProperty = categoryService.hasCategoryProperty(c.getCategoryId(), "type") />
107 <#if !hasProperty>
108 <#if !categoriesString?has_content>
109 <#assign categoriesString = c.getTitle(locale)?upper_case />
110 <#else>
111 <#assign categoriesString = categoriesString + ", " + c.getTitle(locale)?upper_case />
112 </#if>
113 </#if>
114 <#--
115 <#attempt>
116 <#assign typeProperty = assetCategoryPropertyLocalService.fetchCategoryProperty(c.categoryId?long, "type") />
117 <#recover>
118 <#if !categoriesString?has_content>
119 <#assign categoriesString = c.getTitle(locale)?upper_case />
120 <#else>
121 <#assign categoriesString = categoriesString + ", " + c.getTitle(locale)?upper_case />
122 </#if>
123 </#attempt>
124 -->
125 </#list>
126
127 ${categoriesString}
128 </div>
129 </#if>
130 <a href="${displayPage}" target="_self" title="${titolo}">
131 <h3 class="m-0">${titolo}</h3>
132 </a>
133 </div>
134 </div>
135 </#list>
136 <#else>
137 <div class="container">
138 <h2 class="m-0">${noResult}</h2>
139 </div>
140 </#if>
141 </#list>
142 </div>
143 <a data-aos="fade-right" class="pt-5 align-middle" style="display: block" href="/blog">
144 <i class="align-middle me-2 material-icons-outlined">explore</i>
145 <span class="align-middle">${readMore?capitalize}</span>
146 </a>
147 </div>
148 </section>
149</#if>