supervision - discussion about system services, daemon supervision, init, runlevel management, and tools such as s6 and runit
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From: Amaresh Kotekal <amareshkotekal@gmail.com>
To: supervision@list.skarnet.org
Subject: Dependencies in S6
Date: Wed, 21 Oct 2020 15:40:33 +0530
Message-ID: <CADYBkpEsEC7W-kv+pS4RizYXu1mkC2TdHYYN=DH6=ZDMhWnjTA@mail.gmail.com> (raw)

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Hi Team,

I have some doubt on dependencies file in S6.

Secnario 1:
1. A & B are one shot services in a s6-rc bundle. Service B is dependent on
A. ( added in dependency file).
2. I think Service B will start after the completion of service A ( A then
B, in serial manner ) is it correct ? or
3. Service B will start immediately after the service A as started (in a
parallel manner) ?

Secnario 2:
1. A is one shot service and B is a long run service. Service B is
dependent on Service A.
2. Service B will start, once th service A as completed (in serial manner)
? or
3. Service B will start immediately after the service A as started (in a
parallel manner) ?

Secnario 3:
1. A is a long run service and B is a one shot service. Service B is
dependent on Service A.
2. Service B will start immediately after the service A as started (in a
parallel manner) ?
3. Do I need to use notification mechanism if I want to start service B
after A service as reached particular point in execution

Secnario 4:
1. A & B both are long run services. Service B is dependent on Service A.
2. Service B will start immediately after the service A as started (in a
parallel manner) ?

If one shot service are dependent on other one shot services. They will be
started in serial manner one after the other ?

Regards,
Amaresh

             reply	other threads:[~2020-10-21 10:10 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-21 10:10 Amaresh Kotekal [this message]
2020-10-21 13:17 ` Guillermo
2020-10-21 13:23 ` Crest
2020-10-21 13:26 ` Laurent Bercot
2020-10-21 19:14   ` Steve Litt

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supervision - discussion about system services, daemon supervision, init, runlevel management, and tools such as s6 and runit

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