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Only set vm.max_map_count if greater than default (#31512)

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So the issue here is that we want to avoid setting vm.max_map_count if
it is already equal to the desired value (the bootstrap check requires
262144). The reason we want to avoid this is because in some use-cases
using sysctl to set this will fail. In this case, we want to enable
users to set this value externally and then allow that to cause using
sysctl to set the value to be skipped so that cases where using sysctl
will fail to no longer fail.
This commit is contained in:
Ben Abrams 2018-06-27 20:38:30 -07:00 committed by Jason Tedor
parent 9ac81a1322
commit 909a18add7
3 changed files with 3 additions and 4 deletions
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2
distribution/packages/src/deb/init.d/elasticsearch
View File

@ -122,7 +122,7 @@ case "$1" in
ulimit -l $MAX_LOCKED_MEMORY
fi
if [ -n "$MAX_MAP_COUNT" -a -f /proc/sys/vm/max_map_count -a "$MAX_MAP_COUNT" -ge $(cat /proc/sys/vm/max_map_count) ]; then
if [ -n "$MAX_MAP_COUNT" -a -f /proc/sys/vm/max_map_count -a "$MAX_MAP_COUNT" -gt $(cat /proc/sys/vm/max_map_count) ]; then
sysctl -q -w vm.max_map_count=$MAX_MAP_COUNT
fi

2
distribution/packages/src/rpm/init.d/elasticsearch
View File

@ -90,7 +90,7 @@ start() {
if [ -n "$MAX_LOCKED_MEMORY" ]; then
ulimit -l $MAX_LOCKED_MEMORY
fi
if [ -n "$MAX_MAP_COUNT" -a -f /proc/sys/vm/max_map_count -a "$MAX_MAP_COUNT" -ge $(cat /proc/sys/vm/max_map_count) ]; then
if [ -n "$MAX_MAP_COUNT" -a -f /proc/sys/vm/max_map_count -a "$MAX_MAP_COUNT" -gt $(cat /proc/sys/vm/max_map_count) ]; then
sysctl -q -w vm.max_map_count=$MAX_MAP_COUNT
fi

3
qa/vagrant/src/test/resources/packaging/tests/70_sysv_initd.bats
View File

@ -178,8 +178,7 @@ setup() {
}
# Ensures that if $MAX_MAP_COUNT is greater than the set vaule on the OS
# we do not attempt to update it this should cover equality as well as I think
# we can trust that equality operators work as intended.
# we do not attempt to update it.
@test "[INIT.D] sysctl is not run when it already has a larger or equal value set" {
# intentionally set to the default +1
sysctl -q -w vm.max_map_count=262145