Some notes for myself written down publicly in the hopes that they might help some future person.<\/p>\n\n\n\n
It is highly recommended to have the cluster on a vlan\/vswitch!<\/strong> In this example the following IPs are used: Make sure mariadb is off before starting!<\/strong><\/p>\n\n\n\n edit If this is the first node in the cluster, or all nodes in the cluster are currently down, you have to run <\/p>\n\n\n\n Now you’re good to go! You should keep the cluster on a vlan for security reasons. This can be done in netplan by editing \/etc\/netplan\/(yourconfig).yaml and adding:<\/p>\n\n\n\n Here enp0s31f6 is the interface name, 4001 is the vlan id, and 192.168.100.1 is the ip to assign to the local box.<\/p>\n","protected":false},"excerpt":{"rendered":" Some notes for myself written down publicly in the hopes that they might help some future person. It is highly recommended to have the cluster on a vlan\/vswitch!Galera does not implement it’s own security for the cluster ports. See the vlan part at the bottom of this document if you do not have vlans setup … Continue reading “MariaDB clustering with galera”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-288","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/wqrld.net\/blog\/wp-json\/wp\/v2\/posts\/288","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wqrld.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wqrld.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wqrld.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wqrld.net\/blog\/wp-json\/wp\/v2\/comments?post=288"}],"version-history":[{"count":3,"href":"https:\/\/wqrld.net\/blog\/wp-json\/wp\/v2\/posts\/288\/revisions"}],"predecessor-version":[{"id":291,"href":"https:\/\/wqrld.net\/blog\/wp-json\/wp\/v2\/posts\/288\/revisions\/291"}],"wp:attachment":[{"href":"https:\/\/wqrld.net\/blog\/wp-json\/wp\/v2\/media?parent=288"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wqrld.net\/blog\/wp-json\/wp\/v2\/categories?post=288"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wqrld.net\/blog\/wp-json\/wp\/v2\/tags?post=288"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Galera does not implement it’s own security for the cluster ports. See the vlan part at the bottom of this document if you do not have vlans setup yet.<\/p>\n\n\n\n
Local machine: 192.168.100.1
Another cluster node: 192.168.100.2<\/p>\n\n\n\n\/etc\/mysql\/mariadb.conf.d\/60-galera.cnf<\/code><\/p>\n\n\n\n[galera]\nwsrep_on = ON\nwsrep_provider = \/usr\/lib\/galera\/libgalera_smm.so\nwsrep_cluster_address = \"gcomm:\/\/192.168.100.1,192.168.100.2\"\nwsrep_provider_options=\"gmcast.listen_addr=tcp:\/\/192.168.100.1:4567;ist.recv_addr=192.168.100.1:4568\"\nbinlog_format = row\nwsrep_cluster_name=\"galeracluster\"\ndefault_storage_engine = InnoDB\nwsrep_node_address = 192.168.100.1\ninnodb_autoinc_lock_mode = 2\nwsrep_sst_receive_address=192.168.100.1:4444\nbind-address = 192.168.100.1<\/code><\/pre>\n\n\n\ngalera_new_cluster<\/code> to bootstrap the cluster again. Otherwise you can just start the mariadb service through systemd.<\/p>\n\n\n\n
While everything should work now, if you want to read more about galera you can do so here<\/a>.<\/p>\n\n\n\nAddendum: Vlans<\/h2>\n\n\n\n
vlans:\r\n enp0s31f6.4001:\r\n id: 4001\r\n link: enp0s31f6\r\n mtu: 1400\r\n addresses:\r\n - 192.168.100.1\/24<\/code><\/pre>\n\n\n\n