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Use exec in a couple of places to avoid needless lingering /bin/sh processes

Browse Source 
```
$ apk -U add procps
$ ps xf
    1 ?        Ss     0:05 /sbin/init
  357 ?        Ss     0:00 /bin/sh /etc/init.d/containerd
  359 ?        Sl     0:00  \_ /usr/bin/containerd
  360 ?        Ss     0:00 /bin/sh /etc/init.d/containers
  432 ?        Sl     0:00  \_ /usr/bin/runc run --bundle /containers/daemon/swa
  466 ?        Ssl    0:00  |   \_ /usr/bin/swarmd --containerd-addr=/run/contai
  427 ?        Sl     0:00  \_ /usr/bin/runc run --bundle /containers/daemon/dhc
  457 ?        Ss     0:00  |   \_ bin/sh /usr/local/bin/start_dhcpcd.sh
  474 ?        S      0:00  |       \_ /sbin/dhcpcd --nobackground
  429 ?        Sl     0:00  \_ /usr/bin/runc run --bundle /containers/daemon/rng
  576 ?        Ss     0:00      \_ /bin/tini /usr/sbin/rngd -f
  580 ?        S      0:00          \_ /usr/sbin/rngd -f
```

becomes

```
$ ps xf
    1 ?        Ss     0:06 /sbin/init
  358 ?        Ss     0:00 /bin/sh /etc/init.d/containers
  426 ?        Sl     0:00  \_ /usr/bin/runc run --bundle /containers/daemon/dhc
  458 ?        Ss     0:00  |   \_ /sbin/dhcpcd --nobackground
  431 ?        Sl     0:00  \_ /usr/bin/runc run --bundle /containers/daemon/swa
  460 ?        Ssl    0:00  |   \_ /usr/bin/swarmd --containerd-addr=/run/contai
  428 ?        Sl     0:00  \_ /usr/bin/runc run --bundle /containers/daemon/rng
  574 ?        Ss     0:00      \_ /bin/tini /usr/sbin/rngd -f
  578 ?        S      0:00          \_ /usr/sbin/rngd -f
  356 ?        Ssl    0:00 /usr/bin/containerd

```

Specifically these are gone:
  357 ?        Ss     0:00 /bin/sh /etc/init.d/containerd
  457 ?        Ss     0:00  |   \_ bin/sh /usr/local/bin/start_dhcpcd.sh

Signed-off-by: Ian Campbell <ian.campbell@docker.com>
This commit is contained in:
Ian Campbell
2017-04-05 10:37:55 +01:00
parent ea75bd96b6
commit 8270bdfe33
10 changed files with 18 additions and 18 deletions
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4
projects/swarmd/swarmd.yml
View File

@@ -1,7 +1,7 @@
kernel:
image: "mobylinux/kernel:4.9.x"
cmdline: "console=ttyS0 console=tty0 page_poison=1"
init: "mobylinux/init:a27e32a8d6c8865d691fbfb4d0bbb93846cf7802"
init: "mobylinux/init:bdc1897c40048c9ab490681be2b89ccf5740ff77"
system:
- name: sysctl
image: "mobylinux/sysctl:2cf2f9d5b4d314ba1bfc22b2fe931924af666d8c"
@@ -24,7 +24,7 @@ daemon:
oomScoreAdj: -800
readonly: true
- name: dhcpcd
image: "mobylinux/dhcpcd:d01a17d211218f289e2bac601bfe9787d4fabaf2"
image: "mobylinux/dhcpcd:57a8ef29d3a910645b2b24c124f9ce9ef53ce703"
binds:
- /var:/var
- /tmp/etc:/etc