kubernetes/clamp/components/clamp-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 prepare_password()
  22 {
  23         echo "$1" | sed -e "s/'/\\\\'/g; s/\"/\\\\\"/g"
  24 }
  25
  26 # usage: file_env VAR [DEFAULT]
  27 #    ie: file_env 'XYZ_DB_PASSWORD' 'example'
  28 # (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
  29 #  "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
  30 file_env() {
  31         local var="$1"
  32         local fileVar="${var}_FILE"
  33         local def="${2:-}"
  34         if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
  35                 echo >&2 "error: both $var and $fileVar are set (but are exclusive)"
  36                 exit 1
  37         fi
  38         local val="$def"
  39         if [ "${!var:-}" ]; then
  40                 val="${!var}"
  41         elif [ "${!fileVar:-}" ]; then
  42                 val="$(< "${!fileVar}")"
  43         fi
  44         val=`prepare_password $val`
  45         export "$var"="$val"
  46         unset "$fileVar"
  47 }
  48
  49 _check_config() {
  50         toRun=( "$@" --verbose --help --log-bin-index="$(mktemp -u)" )
  51         if ! errors="$("${toRun[@]}" 2>&1 >/dev/null)"; then
  52                 cat >&2 <<-EOM
  53
  54                         ERROR: mysqld failed while attempting to check config
  55                         command was: "${toRun[*]}"
  56
  57                         $errors
  58                 EOM
  59                 exit 1
  60         fi
  61 }
  62
  63 # Fetch value from server config
  64 # We use mysqld --verbose --help instead of my_print_defaults because the
  65 # latter only show values present in config files, and not server defaults
  66 _get_config() {
  67         local conf="$1"; shift
  68         "$@" --verbose --help --log-bin-index="$(mktemp -u)" 2>/dev/null \
  69                 | awk '$1 == "'"$conf"'" && /^[^ \t]/ { sub(/^[^ \t]+[ \t]+/, ""); print; exit }'
  70         # match "datadir      /some/path with/spaces in/it here" but not "--xyz=abc\n     datadir (xyz)"
  71 }
  72
  73 # allow the container to be started with `--user`
  74 if [ "$1" = 'mysqld' -a -z "$wantHelp" -a "$(id -u)" = '0' ]; then
  75         _check_config "$@"
  76         DATADIR="$(_get_config 'datadir' "$@")"
  77         mkdir -p "$DATADIR"
  78         find "$DATADIR" \! -user mysql -exec chown mysql '{}' +
  79         exec gosu mysql "$BASH_SOURCE" "$@"
  80 fi
  81
  82 if [ "$1" = 'mysqld' -a -z "$wantHelp" ]; then
  83         # still need to check config, container may have started with --user
  84         _check_config "$@"
  85         # Get config
  86         DATADIR="$(_get_config 'datadir' "$@")"
  87
  88         if [ ! -d "$DATADIR/mysql" ]; then
  89                 file_env 'MYSQL_ROOT_PASSWORD'
  90                 if [ -z "$MYSQL_ROOT_PASSWORD" -a -z "$MYSQL_ALLOW_EMPTY_PASSWORD" -a -z "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
  91                         echo >&2 'error: database is uninitialized and password option is not specified '
  92                         echo >&2 '  You need to specify one of MYSQL_ROOT_PASSWORD, MYSQL_ALLOW_EMPTY_PASSWORD and MYSQL_RANDOM_ROOT_PASSWORD'
  93                         exit 1
  94                 fi
  95
  96                 mkdir -p "$DATADIR"
  97
  98                 echo 'Initializing database'
  99                 # "Other options are passed to mysqld." (so we pass all "mysqld" arguments directly here)
 100                 mysql_install_db --datadir="$DATADIR" --rpm "${@:2}"
 101                 echo 'Database initialized'
 102
 103                 SOCKET="$(_get_config 'socket' "$@")"
 104                 "$@" --skip-networking --socket="${SOCKET}" &
 105                 pid="$!"
 106
 107                 mysql=( mysql --protocol=socket -uroot -hlocalhost --socket="${SOCKET}" )
 108
 109                 for i in {30..0}; do
 110                         if echo 'SELECT 1' | "${mysql[@]}" &> /dev/null; then
 111                                 break
 112                         fi
 113                         echo 'MySQL init process in progress...'
 114                         sleep 1
 115                 done
 116                 if [ "$i" = 0 ]; then
 117                         echo >&2 'MySQL init process failed.'
 118                         exit 1
 119                 fi
 120
 121                 if [ -z "$MYSQL_INITDB_SKIP_TZINFO" ]; then
 122                         # sed is for https://bugs.mysql.com/bug.php?id=20545
 123                         mysql_tzinfo_to_sql /usr/share/zoneinfo | sed 's/Local time zone must be set--see zic manual page/FCTY/' | "${mysql[@]}" mysql
 124                 fi
 125
 126                 if [ ! -z "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
 127                         export MYSQL_ROOT_PASSWORD="$(pwgen -1 32)"
 128                         echo "GENERATED ROOT PASSWORD: $MYSQL_ROOT_PASSWORD"
 129                 fi
 130
 131                 rootCreate=
 132                 # default root to listen for connections from anywhere
 133                 file_env 'MYSQL_ROOT_HOST' '%'
 134                 if [ ! -z "$MYSQL_ROOT_HOST" -a "$MYSQL_ROOT_HOST" != 'localhost' ]; then
 135                         # no, we don't care if read finds a terminating character in this heredoc
 136                         # https://unix.stackexchange.com/questions/265149/why-is-set-o-errexit-breaking-this-read-heredoc-expression/265151#265151
 137                         read -r -d '' rootCreate <<-EOSQL || true
 138                                 CREATE USER 'root'@'${MYSQL_ROOT_HOST}' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}' ;
 139                                 GRANT ALL ON *.* TO 'root'@'${MYSQL_ROOT_HOST}' WITH GRANT OPTION ;
 140                         EOSQL
 141                 fi
 142
 143                 "${mysql[@]}" <<-EOSQL
 144                         -- What's done in this file shouldn't be replicated
 145                         --  or products like mysql-fabric won't work
 146                         SET @@SESSION.SQL_LOG_BIN=0;
 147
 148                         DELETE FROM mysql.user WHERE user NOT IN ('mysql.sys', 'mysqlxsys', 'root') OR host NOT IN ('localhost') ;
 149                         SET PASSWORD FOR 'root'@'localhost'=PASSWORD('${MYSQL_ROOT_PASSWORD}') ;
 150                         GRANT ALL ON *.* TO 'root'@'localhost' WITH GRANT OPTION ;
 151                         ${rootCreate}
 152                         DROP DATABASE IF EXISTS test ;
 153                         FLUSH PRIVILEGES ;
 154                 EOSQL
 155
 156                 if [ ! -z "$MYSQL_ROOT_PASSWORD" ]; then
 157                         mysql+=( -p"${MYSQL_ROOT_PASSWORD}" )
 158                 fi
 159
 160                 file_env 'MYSQL_DATABASE'
 161                 if [ "$MYSQL_DATABASE" ]; then
 162                         echo "CREATE DATABASE IF NOT EXISTS \`$MYSQL_DATABASE\` ;" | "${mysql[@]}"
 163                         mysql+=( "$MYSQL_DATABASE" )
 164                 fi
 165
 166                 file_env 'MYSQL_USER'
 167                 file_env 'MYSQL_PASSWORD'
 168                 if [ "$MYSQL_USER" -a "$MYSQL_PASSWORD" ]; then
 169                         echo "CREATE USER '$MYSQL_USER'@'%' IDENTIFIED BY '$MYSQL_PASSWORD' ;" | "${mysql[@]}"
 170
 171                         if [ "$MYSQL_DATABASE" ]; then
 172                                 echo "GRANT ALL ON \`$MYSQL_DATABASE\`.* TO '$MYSQL_USER'@'%' ;" | "${mysql[@]}"
 173                         fi
 174                 fi
 175
 176                 echo
 177                 for f in /docker-entrypoint-initdb.d/*; do
 178                         case "$f" in
 179                                 *.sh)     echo "$0: running $f"; . "$f" ;;
 180                                 *.sql)    echo "$0: running $f"; "${mysql[@]}" < "$f"; echo ;;
 181                                 *.sql.gz) echo "$0: running $f"; gunzip -c "$f" | "${mysql[@]}"; echo ;;
 182                                 *)        echo "$0: ignoring $f" ;;
 183                         esac
 184                         echo
 185                 done
 186
 187                 if ! kill -s TERM "$pid" || ! wait "$pid"; then
 188                         echo >&2 'MySQL init process failed.'
 189                         exit 1
 190                 fi
 191
 192                 echo
 193                 echo 'MySQL init process done. Ready for start up.'
 194                 echo
 195         fi
 196 fi
 197
 198 exec "$@"