iSharkFly-Docs
/
packer-cn
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

website: document handling reboots

This commit is contained in:
Mitchell Hashimoto 2013-08-16 10:05:03 -07:00
parent c0f39e5dca
commit 0a950a7cdc
1 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
website/source/docs/provisioners/shell.html.markdown
View File

@ -107,3 +107,23 @@ defines certain commonly useful environmental variables:
* `PACKER_BUILDER_TYPE` is the type of the builder that was used to create * `PACKER_BUILDER_TYPE` is the type of the builder that was used to create
the machine that the script is running on. This is useful if you want to the machine that the script is running on. This is useful if you want to
run only certain parts of the script on systems built with certain builders. run only certain parts of the script on systems built with certain builders.
## Handling Reboots
Provisioning sometimes involves restarts, usually when updating the operating
system. Packer is able to tolerate restarts via the shell provisioner.
Packer handles this by retrying to start scripts for a period of time
before failing. This allows time for the machine to start up and be ready
to run scripts. The amount of time the provisioner will wait is configured
using `start_retry_timeout`, which defaults to a few minutes.
Sometimes, when executing a command like `reboot`, the shell script will
return and Packer will start executing the next one before SSH actually
quits and the machine restarts. For this, put a long `sleep` after the
reboot so that SSH will eventually be killed automatically:
```
reboot
sleep 60
```