4075c851ed
This affects both fedora and the centos base images. Wait_for will be intregrated into kolla-common. Co-authored by: Charles Crouch <charcrou@cisco.com> Change-Id: Ide2304b787d4c3bf6fb3949f09e2cf1f450c2173
19 lines
762 B
Markdown
19 lines
762 B
Markdown
# Wait-for function
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The usage of the wait_for function looks like the following
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$ SCRIPT_NAME LOOPS_NUMBER SLEEP_TIME ARGS
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The ARGS are read and concatenated together into a single command
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and the command is executed in a loop until it succeeds or reaches
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the max number of attempts (LOOPS_NUMBER).
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An optional FAIL_MATCH_OUTPUT variable may also be set to control
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if the loop exits early if the commands stdout/stderr matches the
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supplied regex string.
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Examples:
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$ wait_for 30 10 ping -c 1 192.0.2.2
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$ wait_for 10 1 ls file_we_are_waiting_for
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$ wait_for 10 3 date \| grep 8
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$ FAIL_MATCH_OUTPUT=CREATE_FAILED wait_for 30 10 heat stack-show undercloud
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$ SUCCESSFUL_MATCH_OUTPUT=CREATE_COMPLETE wait_for 30 10 heat stack-show undercloud
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