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authorRobin H. Johnson <robbat2@gentoo.org>2015-08-08 13:49:04 -0700
committerRobin H. Johnson <robbat2@gentoo.org>2015-08-08 17:38:18 -0700
commit56bd759df1d0c750a065b8c845e93d5dfa6b549d (patch)
tree3f91093cdb475e565ae857f1c5a7fd339e2d781e /dev-db/mysql-init-scripts/files/mysqld-wait-ready
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proj/gentoo: Initial commit
This commit represents a new era for Gentoo: Storing the gentoo-x86 tree in Git, as converted from CVS. This commit is the start of the NEW history. Any historical data is intended to be grafted onto this point. Creation process: 1. Take final CVS checkout snapshot 2. Remove ALL ChangeLog* files 3. Transform all Manifests to thin 4. Remove empty Manifests 5. Convert all stale $Header$/$Id$ CVS keywords to non-expanded Git $Id$ 5.1. Do not touch files with -kb/-ko keyword flags. Signed-off-by: Robin H. Johnson <robbat2@gentoo.org> X-Thanks: Alec Warner <antarus@gentoo.org> - did the GSoC 2006 migration tests X-Thanks: Robin H. Johnson <robbat2@gentoo.org> - infra guy, herding this project X-Thanks: Nguyen Thai Ngoc Duy <pclouds@gentoo.org> - Former Gentoo developer, wrote Git features for the migration X-Thanks: Brian Harring <ferringb@gentoo.org> - wrote much python to improve cvs2svn X-Thanks: Rich Freeman <rich0@gentoo.org> - validation scripts X-Thanks: Patrick Lauer <patrick@gentoo.org> - Gentoo dev, running new 2014 work in migration X-Thanks: Michał Górny <mgorny@gentoo.org> - scripts, QA, nagging X-Thanks: All of other Gentoo developers - many ideas and lots of paint on the bikeshed
Diffstat (limited to 'dev-db/mysql-init-scripts/files/mysqld-wait-ready')
-rw-r--r--dev-db/mysql-init-scripts/files/mysqld-wait-ready56
1 files changed, 56 insertions, 0 deletions
diff --git a/dev-db/mysql-init-scripts/files/mysqld-wait-ready b/dev-db/mysql-init-scripts/files/mysqld-wait-ready
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index 000000000000..9e5d3e4d85e0
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+++ b/dev-db/mysql-init-scripts/files/mysqld-wait-ready
@@ -0,0 +1,56 @@
+#!/bin/sh
+
+# This script waits for mysqld to be ready to accept connections
+# (which can be many seconds or even minutes after launch, if there's
+# a lot of crash-recovery work to do).
+# Running this as ExecStartPost is useful so that services declared as
+# "After mysqld" won't be started until the database is really ready.
+
+# Service file passes us the daemon's PID (actually, mysqld_safe's PID)
+daemon_pid="$1"
+
+# extract value of a MySQL option from config files
+# Usage: get_mysql_option SECTION VARNAME DEFAULT
+# result is returned in $result
+# We use my_print_defaults which prints all options from multiple files,
+# with the more specific ones later; hence take the last match.
+get_mysql_option(){
+ result=`/usr/bin/my_print_defaults "$1" | sed -n "s/^--$2=//p" | tail -n 1`
+ if [ -z "$result" ]; then
+ # not found, use default
+ result="$3"
+ fi
+}
+
+# Defaults here had better match what mysqld_safe will default to
+get_mysql_option mysqld datadir "/var/lib/mysql"
+datadir="$result"
+get_mysql_option mysqld socket "/var/lib/mysql/mysql.sock"
+socketfile="$result"
+
+# Wait for the server to come up or for the mysqld process to disappear
+ret=0
+while /bin/true; do
+ RESPONSE=`/usr/bin/mysqladmin --no-defaults --socket="$socketfile" --user=UNKNOWN_MYSQL_USER ping 2>&1`
+ mret=$?
+ if [ $mret -eq 0 ]; then
+ break
+ fi
+ # exit codes 1, 11 (EXIT_CANNOT_CONNECT_TO_SERVICE) are expected,
+ # anything else suggests a configuration error
+ if [ $mret -ne 1 -a $mret -ne 11 ]; then
+ ret=1
+ break
+ fi
+ # "Access denied" also means the server is alive
+ echo "$RESPONSE" | grep -q "Access denied for user" && break
+
+ # Check process still exists
+ if ! /bin/kill -0 $daemon_pid 2>/dev/null; then
+ ret=1
+ break
+ fi
+ sleep 1
+done
+
+exit $ret