2023學(xué)年完整公開課版openstackHAopenstack安全運(yùn)維3

openstack安全運(yùn)維32一、基礎(chǔ)服務(wù)維護(hù)數(shù)據(jù)庫：1.數(shù)據(jù)庫備份mysqldump-hcontroller_vip-udbuser-pdbpass--all-databases>/home/all-databases.sql2.新建數(shù)據(jù)庫集群rm-rf/var/lib/mysql#每個(gè)節(jié)點(diǎn)刪除舊數(shù)據(jù)yumreinstallmariadb#每個(gè)節(jié)點(diǎn)重建/usr/bin/galera_new_cluster#主節(jié)點(diǎn)以新集群方式啟動(dòng)systemctlrestartmysql#從節(jié)點(diǎn)啟動(dòng),觀察日志systemctlrestartmysql#主節(jié)點(diǎn)重啟3.查看集群狀態(tài)mysql-hcontroller_vip

-udbuser-pdbpass-e"SHOWSTATUSLIKE'%wsrep_incoming_addresses%';"4.數(shù)據(jù)庫還原

mysql-uroot-p<all-databases.sql3二、中間件維護(hù)rabbitmq-server:1.停止所有節(jié)點(diǎn)上的RabbitMQ服務(wù)，然后以detached方式獨(dú)立運(yùn)行：rabbit01#rabbitmqctlstoprabbit02#rabbitmqctlstoprabbit03#rabbitmqctlstoprabbit01#rabbitmq-server-detachedrabbit02#rabbitmq-server-detachedrabbit03#rabbitmq-server-detached2.查看各節(jié)點(diǎn)的集群信息：rabbit01#rabbitmqctlcluster_statusrabbit02#rabbitmqctlcluster_statusrabbit03#rabbitmqctlcluster_status#可以看到，各節(jié)點(diǎn)均以單磁盤節(jié)點(diǎn)的集群方式各自運(yùn)行著。3.將rabbit02、rabbit03作為內(nèi)存節(jié)點(diǎn)，加入到rabbit01的集群中rabbit02#rabbitmqctlstop_apprabbit02#rabbitmqctljoin_cluster--ramrabbit@rabbit01rabbit02#rabbitmqctlstart_apprabbit03#rabbitmqctlstop_apprabbit03#rabbitmqctljoin_cluster--ramrabbit@rabbit01rabbit03#rabbitmqctlstart_app4.再次查看各節(jié)點(diǎn)的集群信息：rabbit01#rabbitmqctlcluster_statusrabbit02#rabbitmqctlcluster_statusrabbit03#rabbitmqctlcluster_status4三、如何使用OpenStackCLIOpenStack服務(wù)都有自己的CLI。命令很好記，就是服務(wù)的名字，比如Glance就是glance，Nova就是nova。但Keystone比較特殊，現(xiàn)在是用openstack來代替老版的keystone命令。5如何使用OpenStackCLI1.執(zhí)行命令之前，需要設(shè)置環(huán)境變量。這些變量包含用戶名、Project、密碼等；如果不設(shè)置，每次執(zhí)行命令都必須設(shè)置相關(guān)的命令行參數(shù)2.各個(gè)服務(wù)的命令都有增、刪、改、查的操作其格式是CMD<obj>-create[parm1][parm2]…CMD<obj>-delete[parm]CMD<obj>-update[parm1][parm2]…CMD<obj>-listCMD<obj>-show[parm]例如glance管理的是image，那么:CMD就是glance；obj就是image對(duì)應(yīng)的命令就有g(shù)lanceimage-createglanceimage-deleteglanceimage-updateglanceimage-listglanceimage-show再比如neutron管理的是網(wǎng)絡(luò)和子網(wǎng)等，那么：CMD就是neutron；obj就是net和subnet對(duì)應(yīng)的命令就有網(wǎng)絡(luò)相關(guān)操作neutronnet-createneutronnet-deleteneutronnet-updateneutronnet-listneutronnet–show子網(wǎng)相關(guān)操作neutronsubnet-createneutronsubnet-deleteneutronsubnet-updateneutronsubnet-listneutronsubnet–show有的命令<obj>可以省略，比如nova下面的操作都是針對(duì)instancenovabootnovadeletenovalistnovashow6如何使用OpenStackCLI3.每個(gè)對(duì)象都有IDdelete，show等操作都以ID為參數(shù)，例如7如何使用OpenStackCLI4.可用help