Difference between revisions of "OS/Entropy"

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(Created page with "Check Entropy Figure cat /proc/sys/kernel/random/entropy_avail")
 
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Check Entropy Figure
 
Check Entropy Figure
cat /proc/sys/kernel/random/entropy_avail
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cat /proc/sys/kernel/random/entropy_avail
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If necessary, install rng tools and start, then recheck entropy
 +
yum -y install rng-tools
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systemctl start rngd
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systemctl enable rngd
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 +
 
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Check the status of rngd
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  systemctl status rngd
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If you see a failure
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rngd.service - Hardware RNG Entropy Gatherer Daemon
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  Loaded: loaded (/usr/lib/systemd/system/rngd.service; enabled; vendor preset: enabled)
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  Active: failed (Result: exit-code) since Wed 2016-11-09 09:40:02 GMT; 1min 23s ago
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Main PID: 12778 (code=exited, status=1/FAILURE)

Revision as of 09:42, 9 November 2016

Check Entropy Figure

cat /proc/sys/kernel/random/entropy_avail

If necessary, install rng tools and start, then recheck entropy

yum -y install rng-tools
systemctl start rngd
systemctl enable rngd


Check the status of rngd

 systemctl status rngd

If you see a failure

rngd.service - Hardware RNG Entropy Gatherer Daemon
  Loaded: loaded (/usr/lib/systemd/system/rngd.service; enabled; vendor preset: enabled)
  Active: failed (Result: exit-code) since Wed 2016-11-09 09:40:02 GMT; 1min 23s ago
Main PID: 12778 (code=exited, status=1/FAILURE)