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scylla_post_install.sh: generate memory.conf for CentOS7

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On CentOS7, systemd does not support percentage-based parameter.
To apply memory parameter on CentOS7, we need to override the parameter
in bytes, instead of percentage.

Fixes #6783

(cherry picked from commit 3a25e7285b)
This commit is contained in:
Takuya ASADA
2020-07-28 02:20:58 +09:00
committed by Avi Kivity
parent 82b4f4a6c2
commit 79930048db
1 changed files with 11 additions and 0 deletions
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11
scylla_post_install.sh
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@@ -63,6 +63,17 @@ MemoryHigh=1200M
MemoryMax=1400M
MemoryLimit=1400M
EOS
# On CentOS7, systemd does not support percentage-based parameter.
# To apply memory parameter on CentOS7, we need to override the parameter
# in bytes, instead of percentage.
elif [ "$RHEL" -a "$VERSION_ID" = "7" ]; then
MEMORY_LIMIT=$((MEMTOTAL_BYTES / 100 * 5))
mkdir -p /etc/systemd/system/scylla-helper.slice.d/
cat << EOS > /etc/systemd/system/scylla-helper.slice.d/memory.conf
[Slice]
MemoryLimit=$MEMORY_LIMIT
EOS
fi
systemctl --system daemon-reload >/dev/null || true