内容纲要
manager配置服务原理
概要描述
配置服务会从以下两处依次更新配置文件，
- 组件实际的依赖关系，也会按照其要求生成配置文件、拷贝到对应的目录。也就是要把所依赖的服务的文件拷贝过来（在生成依赖的服务那一步）。
- 以6.0.0为例，在
/var/lib/transwarp-manager/master/content/meta/services/INCEPTOR/transwarp-6.0.0-final/templates/目录下的ftl文件会全部被默认渲染，然后一般都会拷贝到/etc/SERVICENAME/conf这个目录下。
详细说明
- 检查服务的相关目录是否存在
- 生成依赖的服务的配置文件，根据实际依赖关系，copy 依赖组件的配置文件
- 在 Manager 节点上从模板文件或者外部配置文件渲染成实际配置文件，
- 将渲染后的配置文件 copy 到 对应节点 的
/var/lib/transwarp-manager/agent/operations/resource-tmp目录（如果同名覆盖（mv步骤就会报错）） - 将resource-tmp目录下的配置文件 move 至服务的配置文件对应目录
TDH5.x由于没有添加外部配置文件的功能，所以只有一、二、四步。
第一步，检查目录是否存在
Tue Jan 14 11:52:52 CST 2020 [Manager] execute command:CreateDirsOp(List(/etc/inceptor1/),400,None,None)
Tue Jan 14 11:52:52 CST 2020 [Manager] execute command:CreateDirsOp(List(/etc/inceptor1/conf),755,None,None)
Tue Jan 14 11:52:52 CST 2020 [Manager] execute command:CreateDirsOp(List(/var/log/inceptor1),755,None,None)第二步，根据模板目录下所有模板生成对应的配置文件，以hive-site.xml为例
- 从模板文件中渲染hive-site.xml
Tue Jan 14 11:52:52 CST 2020 [Manager] execute command: RenderFileOp(FreeMarker,hive-site.xml.ftl,/etc/inceptor1/conf/hive-site.xml,755,None,None)- 已经生成hive-site.xml，从manager数据库的service_config表中读取，将模板文件中的变量变成实际的常量
Tue Jan 14 11:52:52 CST 2020 [Manager] rendering content of /etc/inceptor1/conf/hive-site.xml ...
Tue Jan 14 11:52:52 CST 2020 [Manager] content of host jiujiu-tdh-60 file /etc/inceptor1/conf/hive-site.xml generated- 拷贝到目标节点的目录下
Tue Jan 14 11:52:52 CST 2020 [Manager] copying to host jiujiu-tdh-60 file /var/lib/transwarp-manager/agent/operations/resource-tmp/@etc@inceptor1@conf@hive-site.xml ...
Tue Jan 14 11:52:52 CST 2020 [Manager] host jiujiu-tdh-60 file /etc/inceptor1/conf/hive-site.xml copied at /var/lib/transwarp-manager/agent/operations/resource-tmp/@etc@inceptor1@conf@hive-site.xml第三步，将外部配置文件test.xml生成，并且拷贝到目标节点的目录下
Tue Jan 14 11:52:52 CST 2020 [Manager] execute command: RenderAdditionalFileOp(test.xml,/etc/inceptor1/conf/test.xml,755,None,None)
Tue Jan 14 11:52:52 CST 2020 [Manager] copying to host jiujiu-tdh-60 additional file /var/lib/transwarp-manager/agent/operations/resource-tmp/@etc@inceptor1@conf@test.xml ...
Tue Jan 14 11:52:52 CST 2020 [Manager] host jiujiu-tdh-60 additional file /etc/inceptor1/conf/test.xml copied at /var/lib/transwarp-manager/agent/operations/resource-tmp/@etc@inceptor1@conf@test.xml外部配置文件会在重启manager之前会缓存之前添加过的外部配置文件，每执行一次配置服务都会重新将历史的外部配置文件remove一次，重启之后则没有removing这一步了
Tue Jan 14 11:52:52 CST 2020 [Manager] execute command: RemoveAdditionalFileOp(hive-site1.xml,/etc/inceptor1/conf/hive-site1.xml)
Tue Jan 14 11:52:52 CST 2020 [Manager] host jiujiu-tdh-60 removing additional file /etc/inceptor1/conf/hive-site1.xml ...
Tue Jan 14 11:52:52 CST 2020 [Manager] Removed host jiujiu-tdh-60 additional file /etc/inceptor1/conf/hive-site1.xml ...第四步，hive-site.xml文件被mv到对应的目标下
Tue Jan 14 11:52:52 CST 2020 [Agent] execute command: mkdir -p $(dirname "/etc/inceptor1/conf/hive-site.xml") && mv -f "/var/lib/transwarp-manager/agent/operations/resource-tmp/@etc@inceptor1@conf@hive-site.xml" "/etc/inceptor1/conf/hive-site.xml" && chmod 755 "/etc/inceptor1/conf/hive-site.xml"第五步，外部配置文件test.xml被mv到对应目录下
Tue Jan 14 11:52:52 CST 2020 [Agent] execute command: mkdir -p $(dirname "/etc/inceptor1/conf/test.xml") && mv -f "/var/lib/transwarp-manager/agent/operations/resource-tmp/@etc@inceptor1@conf@test.xml" "/etc/inceptor1/conf/test.xml" && chmod 755 "/etc/inceptor1/conf/test.xml"
Tue Jan 14 11:52:52 CST 2020 [Agent] exit status: 0