{"id":9284,"date":"2023-02-27T13:28:54","date_gmt":"2023-02-27T16:28:54","guid":{"rendered":"https:\/\/categoriaoutros.com.br\/?p=9284"},"modified":"2025-05-09T16:52:47","modified_gmt":"2025-05-09T19:52:47","slug":"pacemaker-iniciando-e-verificando-o-cluster-parte-008","status":"publish","type":"post","link":"https:\/\/categoriaoutros.com.br\/?p=9284","title":{"rendered":"Pacemaker: Iniciando e Verificando o Cluster &#8211; Parte 008"},"content":{"rendered":"\n<p>J\u00e1 temos alguns artigos falando sobre pacemaker e agora que o corosync est\u00e1 configurado, \u00e9 hora de iniciar o cluster. O comando abaixo iniciar\u00e1 o corosync e o pacemaker em ambos os n\u00f3s do cluster. <\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\"><strong>Repita essas verifica\u00e7\u00f5es no outro n\u00f3. Os resultados devem ser os mesmos.<\/strong><\/mark><\/p>\n\n\n\n<p>Obs.: se dentro de \/etc\/hosts houver <strong>127.0.1.1\tdebian2<\/strong>  comente ou exclua essa linha nos dois n\u00f3s:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>root@debian2:~# cat \/etc\/hosts\n127.0.0.1\tlocalhost\n<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">#127.0.1.1\tdebian2<\/mark>\n\n# The following lines are desirable for IPv6 capable hosts\n::1     localhost ip6-localhost ip6-loopback\nff02::1 ip6-allnodes\nff02::2 ip6-allrouters\n192.168.100.10\tdebian1\n192.168.100.11\tdebian2<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Iniciando o Cluster<\/h2>\n\n\n\n<p>Se voc\u00ea estiver executando o comando <strong>pcs cluster<\/strong> <strong>start<\/strong> de um n\u00f3 diferente daquele em que executou o comando<strong> pcs cluster auth<\/strong> anteriormente, dever\u00e1 autenticar no n\u00f3 atual ao qual est\u00e1 conectado antes de ter permiss\u00e3o para iniciar o cluster.<\/p>\n\n\n\n<p>#1 inicie o cluster executando <strong>pcs cluster start &#8211;all<\/strong><\/p>\n\n\n\n<pre>[root@oracle86 ~]# pcs cluster start --all\noracle86: Starting Cluster...\noracle86B: Starting Cluster...<\/pre>\n\n\n\n<p>Precisamos fazer isso em apenas um dos n\u00f3s. <\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Outro Modo de Iniciar o Cluster<\/h5>\n\n\n\n<p>Como uma alternativa para usar o comando <strong><kbd><em>pcs cluster start --al<\/em><\/kbd><\/strong><em><strong><kbd>l<\/kbd><\/strong><\/em> podemos executar as sequ\u00eancias de comando abaixo em cada n\u00f3 no cluster separadamente:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">pcs cluster start<\/pre>\n\n\n\n<p>ou os dois comandos abaixo<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"> systemctl start corosync.service<\/pre>\n\n\n\n<p>e depois<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">systemctl start pacemaker.service<\/pre>\n\n\n\n<h5 class=\"wp-block-heading\">In\u00edcio Autom\u00e1tico Durante o Boot<\/h5>\n\n\n\n<p>Nos exemplos acima, n\u00e3o habilitando os servi\u00e7os corosync e pacemaker para iniciar na inicializa\u00e7\u00e3o, ao ligarmos o servidor. Se um n\u00f3 de cluster falhar ou for reinicializado, voc\u00ea precisar\u00e1 executar <strong>pcs cluster start nodename (ou &#8211;all) <\/strong>para iniciar o cluster nele. <\/p>\n\n\n\n<p>Embora voc\u00ea possa habilitar os servi\u00e7os para iniciar na inicializa\u00e7\u00e3o, exigir um in\u00edcio manual dos servi\u00e7os de cluster oferece a oportunidade de fazer uma investiga\u00e7\u00e3o de uma falha de n\u00f3 antes de retorn\u00e1-lo ao cluster.<\/p>\n\n\n\n<p>Mas se quiser deixar com in\u00edcio autom\u00e1tico, digite nos dois n\u00f3s(servidores do cluster) o seguinte comando<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">systemctl enable corosync.service<\/pre>\n\n\n\n<p>e em seguida esse outro<\/p>\n\n\n\n<pre id=\"block-a33b60e6-7aae-48db-ad62-130b81469172\" class=\"wp-block-preformatted\">systemctl enable pacemaker.service<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Verifique a instala\u00e7\u00e3o do Corosync<\/h2>\n\n\n\n<p>#1 use o comando <strong><kbd><em>corosync-cfgtool<\/em><\/kbd><\/strong> <strong><em><kbd>-s<\/kbd><\/em><\/strong> para verificar se a comunica\u00e7\u00e3o do cluster est\u00e1 correta:<\/p>\n\n\n\n<pre>[root@oracle86 ~]# corosync-cfgtool -s\nLocal node ID 1, transport knet\nLINK ID 0 udp\n\taddr\t= 192.168.50.3\n\tstatus:\n\t\tnodeid:          1:\tlocalhost\n\t\tnodeid:          2:\tconnecte<\/pre>\n\n\n\n<p>Podemos ver aqui que tudo parece normal com nosso endere\u00e7o IP fixo (n\u00e3o um endere\u00e7o de loopback 127.0.0.x) listado como id e sem falhas para o status.<\/p>\n\n\n\n<p>Se voc\u00ea vir algo diferente, talvez queira come\u00e7ar verificando as configura\u00e7\u00f5es de rede, firewall e SELinux do n\u00f3.<\/p>\n\n\n\n<p>#2 verifique as APIs de associa\u00e7\u00e3o e quorum:<\/p>\n\n\n\n<pre>[root@oracle86 ~]# corosync-cmapctl  | grep members\nruntime.<font color=\"#C01C28\"><b>members<\/b><\/font>.1.config_version (u64) = 0\nruntime.<font color=\"#C01C28\"><b>members<\/b><\/font>.1.ip (str) = r(0) ip(192.168.50.3) \nruntime.<font color=\"#C01C28\"><b>members<\/b><\/font>.1.join_count (u32) = 1\nruntime.<font color=\"#C01C28\"><b>members<\/b><\/font>.1.status (str) = joined\nruntime.<font color=\"#C01C28\"><b>members<\/b><\/font>.2.config_version (u64) = 0\nruntime.<font color=\"#C01C28\"><b>members<\/b><\/font>.2.ip (str) = r(0) ip(192.168.50.4) \nruntime.<font color=\"#C01C28\"><b>members<\/b><\/font>.2.join_count (u32) = 1\nruntime.<font color=\"#C01C28\"><b>members<\/b><\/font>.2.status (str) = joined<\/pre>\n\n\n\n<p>Voc\u00ea deve ver que ambos os n\u00f3s ingressaram no cluster.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Verificando a Instala\u00e7\u00e3o do Pacemaker<\/h2>\n\n\n\n<p>Agora que confirmamos que o Corosync est\u00e1 funcionando, podemos verificar o restante da pilha. <\/p>\n\n\n\n<p>#1 O pacemaker j\u00e1 foi iniciado, portanto, verifique se os processos necess\u00e1rios est\u00e3o em execu\u00e7\u00e3o. Execute o comando <strong><em><kbd>ps axf | grep pacemaker<\/kbd><\/em><\/strong><\/p>\n\n\n\n<pre>[root@oracle86 ~]# ps axf | grep pacemaker\n  80661 pts\/0    S+     0:00                      \\_ grep --color=auto <font color=\"#C01C28\"><b>pacemaker<\/b><\/font>\n  79918 ?        Ss     0:04 \/usr\/sbin\/<font color=\"#C01C28\"><b>pacemaker<\/b><\/font>d\n  79919 ?        Ss     0:03  \\_ \/usr\/libexec\/<font color=\"#C01C28\"><b>pacemaker<\/b><\/font>\/<font color=\"#C01C28\"><b>pacemaker<\/b><\/font>-based\n  79920 ?        Ss     0:03  \\_ \/usr\/libexec\/<font color=\"#C01C28\"><b>pacemaker<\/b><\/font>\/<font color=\"#C01C28\"><b>pacemaker<\/b><\/font>-fenced\n  79921 ?        Ss     0:03  \\_ \/usr\/libexec\/<font color=\"#C01C28\"><b>pacemaker<\/b><\/font>\/<font color=\"#C01C28\"><b>pacemaker<\/b><\/font>-execd\n  79922 ?        Ss     0:03  \\_ \/usr\/libexec\/<font color=\"#C01C28\"><b>pacemaker<\/b><\/font>\/<font color=\"#C01C28\"><b>pacemaker<\/b><\/font>-attrd\n  79923 ?        Ss     0:03  \\_ \/usr\/libexec\/<font color=\"#C01C28\"><b>pacemaker<\/b><\/font>\/<font color=\"#C01C28\"><b>pacemaker<\/b><\/font>-schedulerd\n  79924 ?        Ss     0:03  \\_ \/usr\/libexec\/<font color=\"#C01C28\"><b>pacemaker<\/b><\/font>\/<font color=\"#C01C28\"><b>pacemaker<\/b><\/font>-controld<\/pre>\n\n\n\n<p>#2 Se estiver OK, verifique a sa\u00edda de status dos pcs:<\/p>\n\n\n\n<pre>[root@oracle86 ~]# pcs status\nCluster name: meuCluster\n\nWARNINGS:\nNo stonith devices and stonith-enabled is not false\n\nStatus of pacemakerd: &apos;Pacemaker is running&apos; (last updated 2023-02-27 11:45:55 -05:00)\nCluster Summary:\n  * Stack: corosync\n  * Current DC: oracle86 (version 2.1.4-5.0.1.el8_7.2-dc6eb4362e) - partition with quorum\n  * Last updated: Mon Feb 27 11:45:55 2023\n  * Last change:  Mon Feb 27 09:56:06 2023 by hacluster via crmd on oracle86\n  * 2 nodes configured\n  * 0 resource instances configured\n\nNode List:\n  * Online: [ oracle86 oracle86B ]\n\nFull List of Resources:\n  * No resources\n\nDaemon Status:\n  corosync: active\/disabled\n  pacemaker: active\/disabled\n  pcsd: active\/disabled<\/pre>\n\n\n\n<p>#3 Por fim, certifique-se de que n\u00e3o haja erros de inicializa\u00e7\u00e3o do corosync ou do marcapasso (al\u00e9m de mensagens relacionadas \u00e0 n\u00e3o configura\u00e7\u00e3o do STONITH, que est\u00e3o OK neste momento):<\/p>\n\n\n\njournalctl -b | grep -i error\n\n\n\n<p>Outros sistemas operacionais podem relatar erros de inicializa\u00e7\u00e3o em outros locais, por exemplo \/var\/log\/messages<\/p>\n\n\n\n<p>Execute tamb\u00e9m <strong>crm_verify -LV<\/strong><\/p>\n\n\n\n<pre>[root@oracle86 ~]# crm_verify -LV<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Vendo xml da Configura\u00e7\u00e3o Atual<\/h2>\n\n\n\n<p>Para aqueles que n\u00e3o t\u00eam medo de XML, voc\u00ea pode ver a configura\u00e7\u00e3o e o status do cluster bruto usando o comando <strong><em><kbd>pcs cluster cib<\/kbd><\/em><\/strong>.<\/p>\n\n\n\n<pre>[root@oracle86 ~]# pcs cluster cib\n&lt;cib crm_feature_set=&quot;3.15.0&quot; validate-with=&quot;pacemaker-3.8&quot; epoch=&quot;5&quot; num_updates=&quot;10&quot; admin_epoch=&quot;0&quot; cib-last-written=&quot;Mon Feb 27 09:56:06 2023&quot; update-origin=&quot;oracle86&quot; update-client=&quot;crmd&quot; update-user=&quot;hacluster&quot; have-quorum=&quot;1&quot; dc-uuid=&quot;1&quot;&gt;\n  &lt;configuration&gt;\n    &lt;crm_config&gt;\n      &lt;cluster_property_set id=&quot;cib-bootstrap-options&quot;&gt;\n        &lt;nvpair id=&quot;cib-bootstrap-options-have-watchdog&quot; name=&quot;have-watchdog&quot; value=&quot;false&quot;\/&gt;\n        &lt;nvpair id=&quot;cib-bootstrap-options-dc-version&quot; name=&quot;dc-version&quot; value=&quot;2.1.4-5.0.1.el8_7.2-dc6eb4362e&quot;\/&gt;\n        &lt;nvpair id=&quot;cib-bootstrap-options-cluster-infrastructure&quot; name=&quot;cluster-infrastructure&quot; value=&quot;corosync&quot;\/&gt;\n        &lt;nvpair id=&quot;cib-bootstrap-options-cluster-name&quot; name=&quot;cluster-name&quot; value=&quot;meuCluster&quot;\/&gt;\n      &lt;\/cluster_property_set&gt;\n    &lt;\/crm_config&gt;\n    &lt;nodes&gt;\n      &lt;node id=&quot;1&quot; uname=&quot;oracle86&quot;\/&gt;\n      &lt;node id=&quot;2&quot; uname=&quot;oracle86B&quot;\/&gt;\n    &lt;\/nodes&gt;\n    &lt;resources\/&gt;\n    &lt;constraints\/&gt;\n  &lt;\/configuration&gt;\n  &lt;status&gt;\n    &lt;node_state id=&quot;1&quot; uname=&quot;oracle86&quot; in_ccm=&quot;true&quot; crmd=&quot;online&quot; crm-debug-origin=&quot;do_state_transition&quot; join=&quot;member&quot; expected=&quot;member&quot;&gt;\n      &lt;lrm id=&quot;1&quot;&gt;\n        &lt;lrm_resources\/&gt;\n      &lt;\/lrm&gt;\n    &lt;\/node_state&gt;\n    &lt;node_state id=&quot;2&quot; uname=&quot;oracle86B&quot; crmd=&quot;online&quot; crm-debug-origin=&quot;do_state_transition&quot; in_ccm=&quot;true&quot; join=&quot;member&quot; expected=&quot;member&quot;&gt;\n      &lt;lrm id=&quot;2&quot;&gt;\n        &lt;lrm_resources\/&gt;\n      &lt;\/lrm&gt;\n    &lt;\/node_state&gt;\n  &lt;\/status&gt;\n&lt;\/cib&gt;\n<\/pre>\n\n\n\n<p>\u00c9 uma boa ideia verificar a validade da configura\u00e7\u00e3o antes de qualquer altera\u00e7\u00e3o. Para essa valida\u00e7\u00e3o usamos o comando <strong><em><kbd>crm_verify -L -V<\/kbd><\/em><\/strong><\/p>\n\n\n\n<pre>[root@oracle86 ~]# crm_verify -L -V\n(unpack_resources) \terror: Resource start-up disabled since no STONITH resources have been defined\n(unpack_resources) \terror: Either configure some or disable STONITH with the stonith-enabled option\n(unpack_resources) \terror: NOTE: Clusters with shared data need STONITH to ensure data integrity\ncrm_verify: Errors found during check: config not valid<\/pre>\n\n\n\n<p>Como voc\u00ea pode ver, a ferramenta encontrou alguns erros. O cluster n\u00e3o iniciar\u00e1 nenhum recurso at\u00e9 configurarmos o STONITH.<\/p>\n\n\n\n<p>Veremos isso no pr\u00f3ximo post.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>J\u00e1 temos alguns artigos falando sobre pacemaker e agora que o corosync est\u00e1 configurado, \u00e9 hora de iniciar o cluster. O comando abaixo iniciar\u00e1 o corosync e o pacemaker em ambos os n\u00f3s do cluster. Repita essas verifica\u00e7\u00f5es no outro n\u00f3. Os resultados devem ser os mesmos. Obs.: se dentro de \/etc\/hosts houver 127.0.1.1 debian2&#8230;<\/p>\n<p class=\"more-link-wrap\"><a href=\"https:\/\/categoriaoutros.com.br\/?p=9284\" class=\"more-link\">Read More<span class=\"screen-reader-text\"> &ldquo;Pacemaker: Iniciando e Verificando o Cluster &#8211; Parte 008&rdquo;<\/span> &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":9035,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[3862,3863,3864],"class_list":["post-9284","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-informatica-dicas","tag-iniciando-o-cluster-pacemaker-e-corosync","tag-pcs-cluster-start","tag-pcs-cluster-start-all"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pacemaker: Iniciando e Verificando o Cluster - Parte 008 - Categoria Outros<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/categoriaoutros.com.br\/?p=9284\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pacemaker: Iniciando e Verificando o Cluster - Parte 008 - Categoria Outros\" \/>\n<meta property=\"og:description\" content=\"J\u00e1 temos alguns artigos falando sobre pacemaker e agora que o corosync est\u00e1 configurado, \u00e9 hora de iniciar o cluster. O comando abaixo iniciar\u00e1 o corosync e o pacemaker em ambos os n\u00f3s do cluster. Repita essas verifica\u00e7\u00f5es no outro n\u00f3. Os resultados devem ser os mesmos. 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