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33 lines
1.2 KiB
Diff
33 lines
1.2 KiB
Diff
From 5936f0be4a49eda7b05ea1591bbbba3d72e4d7b9 Mon Sep 17 00:00:00 2001
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From: Christian Hesse <mail@eworm.de>
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Date: Fri, 25 Jan 2019 14:50:53 +0100
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Subject: fix galera_recovery with fs.protected_regular enabled
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The fs.protected_regular sysctls was added in Linux 4.19 to make some
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data spoofing attacks harder. With systemd v241 these will be enabled
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by default.
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With this protection enabled galera_recovery fails with EPERM
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(permission denied). This is caused by a wrong security measure:
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The script changes ownership of $log_file to $user, though $user never
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touches it. The shell redirection writes output to the file, not mysqld.
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So just drop chown to fix this.
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---
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scripts/galera_recovery.sh | 3 +--
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1 file changed, 1 insertion(+), 2 deletions(-)
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diff --git a/scripts/galera_recovery.sh b/scripts/galera_recovery.sh
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index c58f3d8f6b9..c70decc0005 100644
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--- a/scripts/galera_recovery.sh
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+++ b/scripts/galera_recovery.sh
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@@ -101,8 +101,7 @@ wsrep_recover_position() {
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# Safety checks
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if [ -n "$log_file" -a -f "$log_file" ]; then
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- [ "$euid" = "0" ] && chown $user $log_file
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- chmod 600 $log_file
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+ chmod 600 $log_file
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else
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log "WSREP: mktemp failed"
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fi
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