kubernetes/clamp/charts/mariadb/resources/config/init/docker-entrypoint.sh

   1 #!/bin/bash
   2 set -eo pipefail
   3 shopt -s nullglob
   4
   5 # if command starts with an option, prepend mysqld
   6 if [ "${1:0:1}" = '-' ]; then
   7         set -- mysqld "$@"
   8 fi
   9
  10 # skip setup if they want an option that stops mysqld
  11 wantHelp=
  12 for arg; do
  13         case "$arg" in
  14                 -'?'|--help|--print-defaults|-V|--version)
  15                         wantHelp=1
  16                         break
  17                         ;;
  18         esac
  19 done
  20
  21 # usage: file_env VAR [DEFAULT]
  22 #    ie: file_env 'XYZ_DB_PASSWORD' 'example'
  23 # (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
  24 #  "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
  25 file_env() {
  26         local var="$1"
  27         local fileVar="${var}_FILE"
  28         local def="${2:-}"
  29         if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
  30                 echo >&2 "error: both $var and $fileVar are set (but are exclusive)"
  31                 exit 1
  32         fi
  33         local val="$def"
  34         if [ "${!var:-}" ]; then
  35                 val="${!var}"
  36         elif [ "${!fileVar:-}" ]; then
  37                 val="$(< "${!fileVar}")"
  38         fi
  39         val=`echo -n $val | sed -e "s/'/''/g"`
  40         export "$var"="$val"
  41         unset "$fileVar"
  42 }
  43
  44 _check_config() {
  45         toRun=( "$@" --verbose --help --log-bin-index="$(mktemp -u)" )
  46         if ! errors="$("${toRun[@]}" 2>&1 >/dev/null)"; then
  47                 cat >&2 <<-EOM
  48
  49                         ERROR: mysqld failed while attempting to check config
  50                         command was: "${toRun[*]}"
  51
  52                         $errors
  53                 EOM
  54                 exit 1
  55         fi
  56 }
  57
  58 # Fetch value from server config
  59 # We use mysqld --verbose --help instead of my_print_defaults because the
  60 # latter only show values present in config files, and not server defaults
  61 _get_config() {
  62         local conf="$1"; shift
  63         "$@" --verbose --help --log-bin-index="$(mktemp -u)" 2>/dev/null \
  64                 | awk '$1 == "'"$conf"'" && /^[^ \t]/ { sub(/^[^ \t]+[ \t]+/, ""); print; exit }'
  65         # match "datadir      /some/path with/spaces in/it here" but not "--xyz=abc\n     datadir (xyz)"
  66 }
  67
  68 # allow the container to be started with `--user`
  69 if [ "$1" = 'mysqld' -a -z "$wantHelp" -a "$(id -u)" = '0' ]; then
  70         _check_config "$@"
  71         DATADIR="$(_get_config 'datadir' "$@")"
  72         mkdir -p "$DATADIR"
  73         find "$DATADIR" \! -user mysql -exec chown mysql '{}' +
  74         exec gosu mysql "$BASH_SOURCE" "$@"
  75 fi
  76
  77 if [ "$1" = 'mysqld' -a -z "$wantHelp" ]; then
  78         # still need to check config, container may have started with --user
  79         _check_config "$@"
  80         # Get config
  81         DATADIR="$(_get_config 'datadir' "$@")"
  82
  83         if [ ! -d "$DATADIR/mysql" ]; then
  84                 file_env 'MYSQL_ROOT_PASSWORD'
  85                 if [ -z "$MYSQL_ROOT_PASSWORD" -a -z "$MYSQL_ALLOW_EMPTY_PASSWORD" -a -z "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
  86                         echo >&2 'error: database is uninitialized and password option is not specified '
  87                         echo >&2 '  You need to specify one of MYSQL_ROOT_PASSWORD, MYSQL_ALLOW_EMPTY_PASSWORD and MYSQL_RANDOM_ROOT_PASSWORD'
  88                         exit 1
  89                 fi
  90
  91                 mkdir -p "$DATADIR"
  92
  93                 echo 'Initializing database'
  94                 # "Other options are passed to mysqld." (so we pass all "mysqld" arguments directly here)
  95                 mysql_install_db --datadir="$DATADIR" --rpm "${@:2}"
  96                 echo 'Database initialized'
  97
  98                 SOCKET="$(_get_config 'socket' "$@")"
  99                 "$@" --skip-networking --socket="${SOCKET}" &
 100                 pid="$!"
 101
 102                 mysql=( mysql --protocol=socket -uroot -hlocalhost --socket="${SOCKET}" )
 103
 104                 for i in {30..0}; do
 105                         if echo 'SELECT 1' | "${mysql[@]}" &> /dev/null; then
 106                                 break
 107                         fi
 108                         echo 'MySQL init process in progress...'
 109                         sleep 1
 110                 done
 111                 if [ "$i" = 0 ]; then
 112                         echo >&2 'MySQL init process failed.'
 113                         exit 1
 114                 fi
 115
 116                 if [ -z "$MYSQL_INITDB_SKIP_TZINFO" ]; then
 117                         # sed is for https://bugs.mysql.com/bug.php?id=20545
 118                         mysql_tzinfo_to_sql /usr/share/zoneinfo | sed 's/Local time zone must be set--see zic manual page/FCTY/' | "${mysql[@]}" mysql
 119                 fi
 120
 121                 if [ ! -z "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
 122                         export MYSQL_ROOT_PASSWORD="$(pwgen -1 32)"
 123                         echo "GENERATED ROOT PASSWORD: $MYSQL_ROOT_PASSWORD"
 124                 fi
 125
 126                 rootCreate=
 127                 # default root to listen for connections from anywhere
 128                 file_env 'MYSQL_ROOT_HOST' '%'
 129                 if [ ! -z "$MYSQL_ROOT_HOST" -a "$MYSQL_ROOT_HOST" != 'localhost' ]; then
 130                         # no, we don't care if read finds a terminating character in this heredoc
 131                         # https://unix.stackexchange.com/questions/265149/why-is-set-o-errexit-breaking-this-read-heredoc-expression/265151#265151
 132                         read -r -d '' rootCreate <<-EOSQL || true
 133                                 CREATE USER 'root'@'${MYSQL_ROOT_HOST}' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}' ;
 134                                 GRANT ALL ON *.* TO 'root'@'${MYSQL_ROOT_HOST}' WITH GRANT OPTION ;
 135                         EOSQL
 136                 fi
 137
 138                 "${mysql[@]}" <<-EOSQL
 139                         -- What's done in this file shouldn't be replicated
 140                         --  or products like mysql-fabric won't work
 141                         SET @@SESSION.SQL_LOG_BIN=0;
 142
 143                         DELETE FROM mysql.user WHERE user NOT IN ('mysql.sys', 'mysqlxsys', 'root') OR host NOT IN ('localhost') ;
 144                         SET PASSWORD FOR 'root'@'localhost'=PASSWORD('${MYSQL_ROOT_PASSWORD}') ;
 145                         GRANT ALL ON *.* TO 'root'@'localhost' WITH GRANT OPTION ;
 146                         ${rootCreate}
 147                         DROP DATABASE IF EXISTS test ;
 148                         FLUSH PRIVILEGES ;
 149                 EOSQL
 150
 151                 if [ ! -z "$MYSQL_ROOT_PASSWORD" ]; then
 152                         mysql+=( -p"${MYSQL_ROOT_PASSWORD}" )
 153                 fi
 154
 155                 file_env 'MYSQL_DATABASE'
 156                 if [ "$MYSQL_DATABASE" ]; then
 157                         echo "CREATE DATABASE IF NOT EXISTS \`$MYSQL_DATABASE\` ;" | "${mysql[@]}"
 158                         mysql+=( "$MYSQL_DATABASE" )
 159                 fi
 160
 161                 file_env 'MYSQL_USER'
 162                 file_env 'MYSQL_PASSWORD'
 163                 if [ "$MYSQL_USER" -a "$MYSQL_PASSWORD" ]; then
 164                         echo "CREATE USER '$MYSQL_USER'@'%' IDENTIFIED BY '$MYSQL_PASSWORD' ;" | "${mysql[@]}"
 165
 166                         if [ "$MYSQL_DATABASE" ]; then
 167                                 echo "GRANT ALL ON \`$MYSQL_DATABASE\`.* TO '$MYSQL_USER'@'%' ;" | "${mysql[@]}"
 168                         fi
 169                 fi
 170
 171                 echo
 172                 for f in /docker-entrypoint-initdb.d/*; do
 173                         case "$f" in
 174                                 *.sh)     echo "$0: running $f"; . "$f" ;;
 175                                 *.sql)    echo "$0: running $f"; "${mysql[@]}" < "$f"; echo ;;
 176                                 *.sql.gz) echo "$0: running $f"; gunzip -c "$f" | "${mysql[@]}"; echo ;;
 177                                 *)        echo "$0: ignoring $f" ;;
 178                         esac
 179                         echo
 180                 done
 181
 182                 if ! kill -s TERM "$pid" || ! wait "$pid"; then
 183                         echo >&2 'MySQL init process failed.'
 184                         exit 1
 185                 fi
 186
 187                 echo
 188                 echo 'MySQL init process done. Ready for start up.'
 189                 echo
 190         fi
 191 fi
 192
 193 exec "$@"