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438 lines
16 KiB
438 lines
16 KiB
2 years ago
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#!/bin/bash
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set -eo pipefail
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shopt -s nullglob
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# logging functions
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mysql_log() {
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local type="$1"; shift
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# accept argument string or stdin
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local text="$*"; if [ "$#" -eq 0 ]; then text="$(cat)"; fi
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local dt; dt="$(date --rfc-3339=seconds)"
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printf '%s [%s] [Entrypoint]: %s\n' "$dt" "$type" "$text"
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}
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mysql_note() {
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mysql_log Note "$@"
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}
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mysql_warn() {
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mysql_log Warn "$@" >&2
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}
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mysql_error() {
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mysql_log ERROR "$@" >&2
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exit 1
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}
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# usage: file_env VAR [DEFAULT]
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# ie: file_env 'XYZ_DB_PASSWORD' 'example'
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# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
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# "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
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file_env() {
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local var="$1"
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local fileVar="${var}_FILE"
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local def="${2:-}"
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if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
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mysql_error "Both $var and $fileVar are set (but are exclusive)"
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fi
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local val="$def"
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if [ "${!var:-}" ]; then
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val="${!var}"
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elif [ "${!fileVar:-}" ]; then
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val="$(< "${!fileVar}")"
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fi
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export "$var"="$val"
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unset "$fileVar"
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}
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# check to see if this file is being run or sourced from another script
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_is_sourced() {
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# https://unix.stackexchange.com/a/215279
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[ "${#FUNCNAME[@]}" -ge 2 ] \
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&& [ "${FUNCNAME[0]}" = '_is_sourced' ] \
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&& [ "${FUNCNAME[1]}" = 'source' ]
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}
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# usage: docker_process_init_files [file [file [...]]]
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# ie: docker_process_init_files /always-initdb.d/*
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# process initializer files, based on file extensions
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docker_process_init_files() {
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# mysql here for backwards compatibility "${mysql[@]}"
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mysql=( docker_process_sql )
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echo
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local f
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for f; do
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case "$f" in
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*.sh)
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# https://github.com/docker-library/postgres/issues/450#issuecomment-393167936
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# https://github.com/docker-library/postgres/pull/452
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if [ -x "$f" ]; then
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mysql_note "$0: running $f"
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"$f"
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else
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mysql_note "$0: sourcing $f"
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. "$f"
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fi
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;;
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*.sql) mysql_note "$0: running $f"; docker_process_sql < "$f"; echo ;;
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*.sql.gz) mysql_note "$0: running $f"; gunzip -c "$f" | docker_process_sql; echo ;;
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*.sql.xz) mysql_note "$0: running $f"; xzcat "$f" | docker_process_sql; echo ;;
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*) mysql_warn "$0: ignoring $f" ;;
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esac
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echo
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done
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}
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# arguments necessary to run "mysqld --verbose --help" successfully (used for testing configuration validity and for extracting default/configured values)
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_verboseHelpArgs=(
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--verbose --help
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--log-bin-index="$(mktemp -u)" # https://github.com/docker-library/mysql/issues/136
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)
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mysql_check_config() {
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local toRun=( "$@" "${_verboseHelpArgs[@]}" ) errors
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if ! errors="$("${toRun[@]}" 2>&1 >/dev/null)"; then
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mysql_error $'mysqld failed while attempting to check config\n\tcommand was: '"${toRun[*]}"$'\n\t'"$errors"
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fi
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}
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# Fetch value from server config
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# We use mysqld --verbose --help instead of my_print_defaults because the
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# latter only show values present in config files, and not server defaults
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mysql_get_config() {
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local conf="$1"; shift
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"$@" "${_verboseHelpArgs[@]}" 2>/dev/null \
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| awk -v conf="$conf" '$1 == conf && /^[^ \t]/ { sub(/^[^ \t]+[ \t]+/, ""); print; exit }'
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# match "datadir /some/path with/spaces in/it here" but not "--xyz=abc\n datadir (xyz)"
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}
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# Do a temporary startup of the MySQL server, for init purposes
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docker_temp_server_start() {
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if [ "${MYSQL_MAJOR}" = '5.6' ] || [ "${MYSQL_MAJOR}" = '5.7' ]; then
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"$@" --skip-networking --default-time-zone=SYSTEM --socket="${SOCKET}" &
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mysql_note "Waiting for server startup"
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local i
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for i in {30..0}; do
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# only use the root password if the database has already been initialized
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# so that it won't try to fill in a password file when it hasn't been set yet
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extraArgs=()
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if [ -z "$DATABASE_ALREADY_EXISTS" ]; then
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extraArgs+=( '--dont-use-mysql-root-password' )
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fi
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if docker_process_sql "${extraArgs[@]}" --database=mysql <<<'SELECT 1' &> /dev/null; then
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break
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fi
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sleep 1
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done
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if [ "$i" = 0 ]; then
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mysql_error "Unable to start server."
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fi
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else
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# For 5.7+ the server is ready for use as soon as startup command unblocks
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if ! "$@" --daemonize --skip-networking --default-time-zone=SYSTEM --socket="${SOCKET}"; then
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mysql_error "Unable to start server."
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fi
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fi
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}
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# Stop the server. When using a local socket file mysqladmin will block until
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# the shutdown is complete.
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docker_temp_server_stop() {
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if ! mysqladmin --defaults-extra-file=<( _mysql_passfile ) shutdown -uroot --socket="${SOCKET}"; then
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mysql_error "Unable to shut down server."
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fi
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}
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# Verify that the minimally required password settings are set for new databases.
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docker_verify_minimum_env() {
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if [ -z "$MYSQL_ROOT_PASSWORD" -a -z "$MYSQL_ALLOW_EMPTY_PASSWORD" -a -z "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
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mysql_error <<-'EOF'
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Database is uninitialized and password option is not specified
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You need to specify one of the following:
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- MYSQL_ROOT_PASSWORD
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- MYSQL_ALLOW_EMPTY_PASSWORD
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- MYSQL_RANDOM_ROOT_PASSWORD
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EOF
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fi
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# This will prevent the CREATE USER from failing (and thus exiting with a half-initialized database)
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if [ "$MYSQL_USER" = 'root' ]; then
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mysql_error <<-'EOF'
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MYSQL_USER="root", MYSQL_USER and MYSQL_PASSWORD are for configuring a regular user and cannot be used for the root user
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Remove MYSQL_USER="root" and use one of the following to control the root user password:
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- MYSQL_ROOT_PASSWORD
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- MYSQL_ALLOW_EMPTY_PASSWORD
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- MYSQL_RANDOM_ROOT_PASSWORD
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EOF
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fi
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# warn when missing one of MYSQL_USER or MYSQL_PASSWORD
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if [ -n "$MYSQL_USER" ] && [ -z "$MYSQL_PASSWORD" ]; then
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mysql_warn 'MYSQL_USER specified, but missing MYSQL_PASSWORD; MYSQL_USER will not be created'
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elif [ -z "$MYSQL_USER" ] && [ -n "$MYSQL_PASSWORD" ]; then
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mysql_warn 'MYSQL_PASSWORD specified, but missing MYSQL_USER; MYSQL_PASSWORD will be ignored'
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fi
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}
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# creates folders for the database
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# also ensures permission for user mysql of run as root
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docker_create_db_directories() {
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local user; user="$(id -u)"
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# TODO other directories that are used by default? like /var/lib/mysql-files
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# see https://github.com/docker-library/mysql/issues/562
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mkdir -p "$DATADIR"
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if [ "$user" = "0" ]; then
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# this will cause less disk access than `chown -R`
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find "$DATADIR" \! -user mysql -exec chown mysql '{}' +
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fi
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}
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# initializes the database directory
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docker_init_database_dir() {
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mysql_note "Initializing database files"
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if [ "$MYSQL_MAJOR" = '5.6' ]; then
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mysql_install_db --datadir="$DATADIR" --rpm --keep-my-cnf "${@:2}" --default-time-zone=SYSTEM
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else
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"$@" --initialize-insecure --default-time-zone=SYSTEM
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fi
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mysql_note "Database files initialized"
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if command -v mysql_ssl_rsa_setup > /dev/null && [ ! -e "$DATADIR/server-key.pem" ]; then
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# https://github.com/mysql/mysql-server/blob/23032807537d8dd8ee4ec1c4d40f0633cd4e12f9/packaging/deb-in/extra/mysql-systemd-start#L81-L84
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mysql_note "Initializing certificates"
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mysql_ssl_rsa_setup --datadir="$DATADIR"
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mysql_note "Certificates initialized"
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fi
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}
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# Loads various settings that are used elsewhere in the script
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# This should be called after mysql_check_config, but before any other functions
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docker_setup_env() {
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# Get config
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declare -g DATADIR SOCKET
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DATADIR="$(mysql_get_config 'datadir' "$@")"
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SOCKET="$(mysql_get_config 'socket' "$@")"
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# Initialize values that might be stored in a file
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file_env 'MYSQL_ROOT_HOST' '%'
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file_env 'MYSQL_DATABASE'
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file_env 'MYSQL_USER'
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file_env 'MYSQL_PASSWORD'
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file_env 'MYSQL_ROOT_PASSWORD'
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declare -g DATABASE_ALREADY_EXISTS
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if [ -d "$DATADIR/mysql" ]; then
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DATABASE_ALREADY_EXISTS='true'
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fi
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}
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# Execute sql script, passed via stdin
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# usage: docker_process_sql [--dont-use-mysql-root-password] [mysql-cli-args]
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# ie: docker_process_sql --database=mydb <<<'INSERT ...'
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# ie: docker_process_sql --dont-use-mysql-root-password --database=mydb <my-file.sql
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docker_process_sql() {
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passfileArgs=()
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if [ '--dont-use-mysql-root-password' = "$1" ]; then
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passfileArgs+=( "$1" )
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shift
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fi
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# args sent in can override this db, since they will be later in the command
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if [ -n "$MYSQL_DATABASE" ]; then
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set -- --database="$MYSQL_DATABASE" "$@"
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fi
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mysql --defaults-extra-file=<( _mysql_passfile "${passfileArgs[@]}") --protocol=socket -uroot -hlocalhost --socket="${SOCKET}" --comments "$@"
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}
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# Initializes database with timezone info and root password, plus optional extra db/user
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docker_setup_db() {
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# Load timezone info into database
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if [ -z "$MYSQL_INITDB_SKIP_TZINFO" ]; then
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# sed is for https://bugs.mysql.com/bug.php?id=20545
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mysql_tzinfo_to_sql /usr/share/zoneinfo \
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| sed 's/Local time zone must be set--see zic manual page/FCTY/' \
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| docker_process_sql --dont-use-mysql-root-password --database=mysql
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# tell docker_process_sql to not use MYSQL_ROOT_PASSWORD since it is not set yet
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fi
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# Generate random root password
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if [ -n "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
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export MYSQL_ROOT_PASSWORD="$(pwgen -1 32)"
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mysql_note "GENERATED ROOT PASSWORD: $MYSQL_ROOT_PASSWORD"
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fi
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# Sets root password and creates root users for non-localhost hosts
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local rootCreate=
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# default root to listen for connections from anywhere
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if [ -n "$MYSQL_ROOT_HOST" ] && [ "$MYSQL_ROOT_HOST" != 'localhost' ]; then
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# no, we don't care if read finds a terminating character in this heredoc
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# https://unix.stackexchange.com/questions/265149/why-is-set-o-errexit-breaking-this-read-heredoc-expression/265151#265151
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read -r -d '' rootCreate <<-EOSQL || true
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CREATE USER 'root'@'${MYSQL_ROOT_HOST}' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}' ;
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GRANT ALL ON *.* TO 'root'@'${MYSQL_ROOT_HOST}' WITH GRANT OPTION ;
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EOSQL
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fi
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local passwordSet=
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if [ "$MYSQL_MAJOR" = '5.6' ]; then
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# no, we don't care if read finds a terminating character in this heredoc (see above)
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read -r -d '' passwordSet <<-EOSQL || true
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DELETE FROM mysql.user WHERE user NOT IN ('mysql.sys', 'mysqlxsys', 'root') OR host NOT IN ('localhost') ;
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SET PASSWORD FOR 'root'@'localhost'=PASSWORD('${MYSQL_ROOT_PASSWORD}') ;
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-- 5.5: https://github.com/mysql/mysql-server/blob/e48d775c6f066add457fa8cfb2ebc4d5ff0c7613/scripts/mysql_secure_installation.sh#L192-L210
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-- 5.6: https://github.com/mysql/mysql-server/blob/06bc670db0c0e45b3ea11409382a5c315961f682/scripts/mysql_secure_installation.sh#L218-L236
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-- 5.7: https://github.com/mysql/mysql-server/blob/913071c0b16cc03e703308250d795bc381627e37/client/mysql_secure_installation.cc#L792-L818
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-- 8.0: https://github.com/mysql/mysql-server/blob/b93c1661d689c8b7decc7563ba15f6ed140a4eb6/client/mysql_secure_installation.cc#L726-L749
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DELETE FROM mysql.db WHERE Db='test' OR Db='test\_%' ;
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-- https://github.com/docker-library/mysql/pull/479#issuecomment-414561272 ("This is only needed for 5.5 and 5.6")
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EOSQL
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else
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# no, we don't care if read finds a terminating character in this heredoc (see above)
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read -r -d '' passwordSet <<-EOSQL || true
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ALTER USER 'root'@'localhost' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}' ;
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EOSQL
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fi
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# tell docker_process_sql to not use MYSQL_ROOT_PASSWORD since it is just now being set
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docker_process_sql --dont-use-mysql-root-password --database=mysql <<-EOSQL
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-- What's done in this file shouldn't be replicated
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-- or products like mysql-fabric won't work
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SET @@SESSION.SQL_LOG_BIN=0;
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${passwordSet}
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GRANT ALL ON *.* TO 'root'@'localhost' WITH GRANT OPTION ;
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FLUSH PRIVILEGES ;
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${rootCreate}
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DROP DATABASE IF EXISTS test ;
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EOSQL
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# Creates a custom database and user if specified
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if [ -n "$MYSQL_DATABASE" ]; then
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mysql_note "Creating database ${MYSQL_DATABASE}"
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docker_process_sql --database=mysql <<<"CREATE DATABASE IF NOT EXISTS \`$MYSQL_DATABASE\` ;"
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fi
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if [ -n "$MYSQL_USER" ] && [ -n "$MYSQL_PASSWORD" ]; then
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mysql_note "Creating user ${MYSQL_USER}"
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docker_process_sql --database=mysql <<<"CREATE USER '$MYSQL_USER'@'%' IDENTIFIED BY '$MYSQL_PASSWORD' ;"
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if [ -n "$MYSQL_DATABASE" ]; then
|
||
|
|
mysql_note "Giving user ${MYSQL_USER} access to schema ${MYSQL_DATABASE}"
|
||
|
|
docker_process_sql --database=mysql <<<"GRANT ALL ON \`${MYSQL_DATABASE//_/\\_}\`.* TO '$MYSQL_USER'@'%' ;"
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
# 创建replication用户并授权
|
||
|
|
if [ -n "$MYSQL_REPLICATION_USER" ] && [ -n "$MYSQL_REPLICATION_PASSWORD" ]; then
|
||
|
|
mysql_note "Creating user $MYSQL_REPLICATION_USER"
|
||
|
|
docker_process_sql --database=mysql <<<"CREATE USER '$MYSQL_REPLICATION_USER'@'%' IDENTIFIED BY '$MYSQL_REPLICATION_PASSWORD';"
|
||
|
|
docker_process_sql --database=mysql <<<"GRANT REPLICATION SLAVE,SUPER ON *.* TO '$MYSQL_REPLICATION_USER'@'%';"
|
||
|
|
docker_process_sql --database=mysql <<<"FLUSH PRIVILEGES ;"
|
||
|
|
fi
|
||
|
|
# 创建monitor用户并授权
|
||
|
|
if [ -n "$MYSQL_MONITOR_USER" ] && [ -n "$MYSQL_MONITOR_PASSWORD" ]; then
|
||
|
|
mysql_note "Creating user $MYSQL_MONITOR_USER"
|
||
|
|
docker_process_sql --database=mysql <<<"CREATE USER '$MYSQL_MONITOR_USER'@'%' IDENTIFIED BY '$MYSQL_MONITOR_PASSWORD' WITH MAX_USER_CONNECTIONS 3;"
|
||
|
|
docker_process_sql --database=mysql <<<"GRANT PROCESS, REPLICATION CLIENT, SELECT ON *.* TO '$MYSQL_MONITOR_USER'@'%';"
|
||
|
|
docker_process_sql --database=mysql <<<"FLUSH PRIVILEGES ;"
|
||
|
|
fi
|
||
|
|
# 创建xbk用户并授权
|
||
|
|
if [ -n "$MYSQL_XBK_USER" ] && [ -n "$MYSQL_XBK_PASSWORD" ]; then
|
||
|
|
mysql_note "Creating user $MYSQL_XBK_USER"
|
||
|
|
docker_process_sql --database=mysql <<<"CREATE USER '$MYSQL_XBK_USER'@'%' IDENTIFIED BY '$MYSQL_XBK_PASSWORD';"
|
||
|
|
docker_process_sql --database=mysql <<<"GRANT RELOAD, LOCK TABLES, PROCESS, REPLICATION CLIENT,SUPER ON *.* TO '$MYSQL_XBK_USER'@'%';"
|
||
|
|
docker_process_sql --database=mysql <<<"FLUSH PRIVILEGES ;"
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
_mysql_passfile() {
|
||
|
|
# echo the password to the "file" the client uses
|
||
|
|
# the client command will use process substitution to create a file on the fly
|
||
|
|
# ie: --defaults-extra-file=<( _mysql_passfile )
|
||
|
|
if [ '--dont-use-mysql-root-password' != "$1" ] && [ -n "$MYSQL_ROOT_PASSWORD" ]; then
|
||
|
|
cat <<-EOF
|
||
|
|
[client]
|
||
|
|
password="${MYSQL_ROOT_PASSWORD}"
|
||
|
|
EOF
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
# Mark root user as expired so the password must be changed before anything
|
||
|
|
# else can be done (only supported for 5.6+)
|
||
|
|
mysql_expire_root_user() {
|
||
|
|
if [ -n "$MYSQL_ONETIME_PASSWORD" ]; then
|
||
|
|
docker_process_sql --database=mysql <<-EOSQL
|
||
|
|
ALTER USER 'root'@'%' PASSWORD EXPIRE;
|
||
|
|
EOSQL
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
# check arguments for an option that would cause mysqld to stop
|
||
|
|
# return true if there is one
|
||
|
|
_mysql_want_help() {
|
||
|
|
local arg
|
||
|
|
for arg; do
|
||
|
|
case "$arg" in
|
||
|
|
-'?'|--help|--print-defaults|-V|--version)
|
||
|
|
return 0
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
return 1
|
||
|
|
}
|
||
|
|
|
||
|
|
_main() {
|
||
|
|
# if command starts with an option, prepend mysqld
|
||
|
|
if [ "${1:0:1}" = '-' ]; then
|
||
|
|
set -- mysqld "$@"
|
||
|
|
fi
|
||
|
|
|
||
|
|
# skip setup if they aren't running mysqld or want an option that stops mysqld
|
||
|
|
if [ "$1" = 'mysqld' ] && ! _mysql_want_help "$@"; then
|
||
|
|
mysql_note "Entrypoint script for MySQL Server ${MYSQL_VERSION} started."
|
||
|
|
|
||
|
|
mysql_check_config "$@"
|
||
|
|
# Load various environment variables
|
||
|
|
docker_setup_env "$@"
|
||
|
|
docker_create_db_directories
|
||
|
|
|
||
|
|
# If container is started as root user, restart as dedicated mysql user
|
||
|
|
if [ "$(id -u)" = "0" ]; then
|
||
|
|
mysql_note "Switching to dedicated user 'mysql'"
|
||
|
|
exec gosu mysql "$BASH_SOURCE" "$@"
|
||
|
|
fi
|
||
|
|
|
||
|
|
# there's no database, so it needs to be initialized
|
||
|
|
if [ -z "$DATABASE_ALREADY_EXISTS" ]; then
|
||
|
|
docker_verify_minimum_env
|
||
|
|
|
||
|
|
# check dir permissions to reduce likelihood of half-initialized database
|
||
|
|
ls /docker-entrypoint-initdb.d/ > /dev/null
|
||
|
|
|
||
|
|
docker_init_database_dir "$@"
|
||
|
|
|
||
|
|
mysql_note "Starting temporary server"
|
||
|
|
docker_temp_server_start "$@"
|
||
|
|
mysql_note "Temporary server started."
|
||
|
|
|
||
|
|
docker_setup_db
|
||
|
|
docker_process_init_files /docker-entrypoint-initdb.d/*
|
||
|
|
|
||
|
|
mysql_expire_root_user
|
||
|
|
|
||
|
|
mysql_note "Stopping temporary server"
|
||
|
|
docker_temp_server_stop
|
||
|
|
mysql_note "Temporary server stopped"
|
||
|
|
|
||
|
|
echo
|
||
|
|
mysql_note "MySQL init process done. Ready for start up."
|
||
|
|
echo
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
exec "$@"
|
||
|
|
}
|
||
|
|
|
||
|
|
# If we are sourced from elsewhere, don't perform any further actions
|
||
|
|
if ! _is_sourced; then
|
||
|
|
_main "$@"
|
||
|
|
fi
|