Something to keep in mind regarding custom status functions. While check_process_status via a PID file is very common it is possible to determine the status by evaluating other commands.
It need only raise ComponentIsNotRunning() when it determines a component is not running. Example for Storm under supervisord https://github.com/apache/ambari/blob/a8184e8b7f6d8d247ee2ef77303c6bce55ebca39/ambari-server/src/main/resources/common-services/STORM/0.9.1/package/scripts/supervisord_service.py#L30 def supervisord_check_status(component_name): try: Execute(format("supervisorctl status storm-{component_name} | grep RUNNING")) except Fail: raise ComponentIsNotRunning() The command within Execute() can be modified as needed i.e. systemctl status ntpd | grep -q \(running\) On Tue, Jun 26, 2018 at 8:26 PM, <xiang....@sky-data.cn> wrote: > Sure, it is a workaround which i have used. > > In my thought, use config['configurations'] directly could be cool, right? > > ----- Original Message ----- > From: "Steve Varnau" <steve.var...@esgyn.com> > To: dev@ambari.apache.org > Sent: Tuesday, June 26, 2018 11:45:22 PM > Subject: RE: why status can not use config['configurations'] > > Speaking as a novice, but it seems to me that you can write out the config > value into a system config file (/etc/<service>/conf/...) when installing > the service, and then the status function has to read the value from there. > > --Steve > > > -----Original Message----- > > From: Dai Xiang <xiang....@sky-data.cn> > > Sent: Monday, June 25, 2018 6:21 PM > > To: dev@ambari.apache.org > > Subject: Re: why status can not use config['configurations'] > > > > On Mon, Jun 25, 2018 at 08:59:31AM -0500, David Quiroga wrote: > > > If possible can you share more code. Hard to understand what is going > on. > > > Are you modifying an existing script or creating a custom one? > > > > I want to create a custom service and in status function, i want to > > read config when install which is as > > config['configurations']['ntpd']['deploy']. > > > > In install/start/stop function, this val can be got as expected, > > but in status function can not, i tried to print it and it output > > "agentConfigParams". > > > > So how can i get config when install? > > > > > > > > On Mon, Jun 25, 2018 at 3:01 AM, <xiang....@sky-data.cn> wrote: > > > > > > > Hi! > > > > > > > > config = Script.get_config() > > > > Then I want to use config['configurations']['ntpd']['deploy'] in > status > > > > function, but it says: > > > > > > > > Fail: Configuration parameter 'ntpd' was not found in configurations > > > > dictionary! > > > > > > > > I also use config['configurations']['ntpd']['deploy'] in start and > stop > > > > function, both ok. > > > > > > > > And i try to print config in status funtion, it only prints > > > > agentConfigParams. > > > > > > > > So how can i use config['configurations']['ntpd']['deploy']? > > > > > > > > Thanks. > > > > > > > > > > > > > > > > > > > > -- > > Best Regards > > Dai Xiang > -- > 戴翔 > 南京天数信息科技有限公司 > 电话: +86 1 3382776490 > 公司官网: www.sky-data.cn > 免费使用天数润科智能计算平台 SkyDiscovery >
