hortonworks-data-platform - 在 Apache Ambari 中更新 IP 地址

Question

我在HDP (2.2.0.0-2041) 上运行 Ambari 安装 (1.7.0)。重新启动其中一台机器后，内部 IP 地址发生了变化。这意味着 Ambari 找不到它。（我们在 AWS EC2 上运行，因此主机名的格式为 ip-xxxx。）

我如何通知 Ambari 新的 IP 地址？到目前为止，我发现的唯一选择是添加一个新主机，但据我所知，这会将机器擦干净。

Answer 1

这篇很棒的博客文章帮助了我们： http ://www.swiss-scalability.com/2015/01/rename-host-in-ambari-170.html

基本上你需要登录到 Ambari 的数据库。（不是 GUI，实际的后端数据库）。最好完整阅读博客文章，但我附上了真正使事情发生的重要秘诀。

如果你在mysql上：

SET FOREIGN_KEY_CHECKS=0; 
BEGIN;
UPDATE ambari.clusterhostmapping set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.configgrouphostmapping set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.host_role_command set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.hostcomponentdesiredstate set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.hostcomponentstate set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.hostconfigmapping set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.hoststate set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.hosts set host_name = '${new-name}' WHERE host_name = '${old-name}';
COMMIT;
SET FOREIGN_KEY_CHECKS=1;

如果您使用的是 postgresql：

ALTER TABLE ambari.clusterhostmapping DROP CONSTRAINT clusterhostmapping_cluster_id;
ALTER TABLE ambari.configgrouphostmapping DROP CONSTRAINT fk_cghm_hname;
ALTER TABLE ambari.host_role_command DROP CONSTRAINT fk_host_role_command_host_name;
ALTER TABLE ambari.hostcomponentdesiredstate DROP CONSTRAINT hstcmponentdesiredstatehstname;
ALTER TABLE ambari.hostcomponentstate DROP CONSTRAINT hostcomponentstate_host_name;
ALTER TABLE ambari.hostconfigmapping DROP CONSTRAINT fk_hostconfmapping_host_name;
ALTER TABLE ambari.hoststate DROP CONSTRAINT fk_hoststate_host_name;


BEGIN;
UPDATE ambari.clusterhostmapping set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.configgrouphostmapping set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.host_role_command set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.hostcomponentdesiredstate set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.hostcomponentstate set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.hostconfigmapping set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.hoststate set host_name = '${new-name}' WHERE host_name = '${old-name}';
UPDATE ambari.hosts set host_name = '${new-name}' WHERE host_name = '${old-name}';
COMMIT;


ALTER TABLE ambari.hoststate ADD CONSTRAINT fk_hoststate_host_name FOREIGN KEY (host_name) REFERENCES ambari.hosts(host_name);
ALTER TABLE ambari.hostconfigmapping ADD CONSTRAINT fk_hostconfmapping_host_name FOREIGN KEY (host_name) REFERENCES ambari.hosts(host_name);
ALTER TABLE ambari.hostcomponentstate ADD CONSTRAINT hostcomponentstate_host_name FOREIGN KEY (host_name) REFERENCES ambari.hosts(host_name);
ALTER TABLE ambari.hostcomponentdesiredstate ADD CONSTRAINT hstcmponentdesiredstatehstname FOREIGN KEY (host_name) REFERENCES ambari.hosts(host_name);
ALTER TABLE ambari.host_role_command ADD CONSTRAINT fk_host_role_command_host_name FOREIGN KEY (host_name) REFERENCES ambari.hosts(host_name);
ALTER TABLE ambari.configgrouphostmapping ADD CONSTRAINT fk_cghm_hname FOREIGN KEY (host_name) REFERENCES ambari.hosts(host_name);
ALTER TABLE ambari.clusterhostmapping ADD CONSTRAINT clusterhostmapping_cluster_id FOREIGN KEY (host_name) REFERENCES ambari.hosts(host_name);