341 lines
14 KiB
Bash
341 lines
14 KiB
Bash
#!/bin/bash
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set -Eeuo pipefail
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if [ "${1:0:1}" = '-' ]; then
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set -- mongod "$@"
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fi
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originalArgOne="$1"
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# allow the container to be started with `--user`
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# all mongo* commands should be dropped to the correct user
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if [[ "$originalArgOne" == mongo* ]] && [ "$(id -u)" = '0' ]; then
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if [ "$originalArgOne" = 'mongod' ]; then
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find /data/configdb /data/db \! -user mongodb -exec chown mongodb '{}' +
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fi
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# make sure we can write to stdout and stderr as "mongodb"
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# (for our "initdb" code later; see "--logpath" below)
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chown --dereference mongodb "/proc/$$/fd/1" "/proc/$$/fd/2" || :
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# ignore errors thanks to https://github.com/docker-library/mongo/issues/149
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exec gosu mongodb "$BASH_SOURCE" "$@"
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fi
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# you should use numactl to start your mongod instances, including the config servers, mongos instances, and any clients.
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# https://docs.mongodb.com/manual/administration/production-notes/#configuring-numa-on-linux
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if [[ "$originalArgOne" == mongo* ]]; then
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numa='numactl --interleave=all'
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if $numa true &> /dev/null; then
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set -- $numa "$@"
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fi
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fi
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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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echo >&2 "error: both $var and $fileVar are set (but are exclusive)"
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exit 1
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fi
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local val="$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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# see https://github.com/docker-library/mongo/issues/147 (mongod is picky about duplicated arguments)
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_mongod_hack_have_arg() {
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local checkArg="$1"; shift
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local arg
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for arg; do
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case "$arg" in
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"$checkArg"|"$checkArg"=*)
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return 0
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;;
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esac
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done
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return 1
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}
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# _mongod_hack_get_arg_val '--some-arg' "$@"
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_mongod_hack_get_arg_val() {
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local checkArg="$1"; shift
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while [ "$#" -gt 0 ]; do
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local arg="$1"; shift
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case "$arg" in
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"$checkArg")
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echo "$1"
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return 0
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;;
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"$checkArg"=*)
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echo "${arg#$checkArg=}"
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return 0
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;;
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esac
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done
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return 1
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}
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declare -a mongodHackedArgs
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# _mongod_hack_ensure_arg '--some-arg' "$@"
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# set -- "${mongodHackedArgs[@]}"
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_mongod_hack_ensure_arg() {
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local ensureArg="$1"; shift
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mongodHackedArgs=( "$@" )
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if ! _mongod_hack_have_arg "$ensureArg" "$@"; then
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mongodHackedArgs+=( "$ensureArg" )
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fi
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}
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# _mongod_hack_ensure_no_arg '--some-unwanted-arg' "$@"
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# set -- "${mongodHackedArgs[@]}"
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_mongod_hack_ensure_no_arg() {
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local ensureNoArg="$1"; shift
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mongodHackedArgs=()
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while [ "$#" -gt 0 ]; do
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local arg="$1"; shift
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if [ "$arg" = "$ensureNoArg" ]; then
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continue
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fi
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mongodHackedArgs+=( "$arg" )
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done
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}
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# _mongod_hack_ensure_no_arg '--some-unwanted-arg' "$@"
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# set -- "${mongodHackedArgs[@]}"
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_mongod_hack_ensure_no_arg_val() {
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local ensureNoArg="$1"; shift
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mongodHackedArgs=()
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while [ "$#" -gt 0 ]; do
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local arg="$1"; shift
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case "$arg" in
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"$ensureNoArg")
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shift # also skip the value
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continue
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;;
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"$ensureNoArg"=*)
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# value is already included
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continue
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;;
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esac
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mongodHackedArgs+=( "$arg" )
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done
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}
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# _mongod_hack_ensure_arg_val '--some-arg' 'some-val' "$@"
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# set -- "${mongodHackedArgs[@]}"
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_mongod_hack_ensure_arg_val() {
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local ensureArg="$1"; shift
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local ensureVal="$1"; shift
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_mongod_hack_ensure_no_arg_val "$ensureArg" "$@"
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mongodHackedArgs+=( "$ensureArg" "$ensureVal" )
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}
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# _js_escape 'some "string" value'
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_js_escape() {
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jq --null-input --arg 'str' "$1" '$str'
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}
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jsonConfigFile="${TMPDIR:-/tmp}/docker-entrypoint-config.json"
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tempConfigFile="${TMPDIR:-/tmp}/docker-entrypoint-temp-config.json"
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_parse_config() {
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if [ -s "$tempConfigFile" ]; then
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return 0
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fi
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local configPath
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if configPath="$(_mongod_hack_get_arg_val --config "$@")"; then
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# if --config is specified, parse it into a JSON file so we can remove a few problematic keys (especially SSL-related keys)
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# see https://docs.mongodb.com/manual/reference/configuration-options/
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mongo --norc --nodb --quiet --eval "load('/js-yaml.js'); printjson(jsyaml.load(cat($(_js_escape "$configPath"))))" > "$jsonConfigFile"
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jq 'del(.systemLog, .processManagement, .net, .security)' "$jsonConfigFile" > "$tempConfigFile"
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return 0
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fi
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return 1
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}
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dbPath=
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_dbPath() {
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if [ -n "$dbPath" ]; then
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echo "$dbPath"
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return
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fi
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if ! dbPath="$(_mongod_hack_get_arg_val --dbpath "$@")"; then
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if _parse_config "$@"; then
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dbPath="$(jq -r '.storage.dbPath // empty' "$jsonConfigFile")"
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fi
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fi
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: "${dbPath:=/data/db}"
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echo "$dbPath"
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}
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if [ "$originalArgOne" = 'mongod' ]; then
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file_env 'MONGO_INITDB_ROOT_USERNAME'
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file_env 'MONGO_INITDB_ROOT_PASSWORD'
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# pre-check a few factors to see if it's even worth bothering with initdb
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shouldPerformInitdb=
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if [ "$MONGO_INITDB_ROOT_USERNAME" ] && [ "$MONGO_INITDB_ROOT_PASSWORD" ]; then
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# if we have a username/password, let's set "--auth"
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_mongod_hack_ensure_arg '--auth' "$@"
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set -- "${mongodHackedArgs[@]}"
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shouldPerformInitdb='true'
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elif [ "$MONGO_INITDB_ROOT_USERNAME" ] || [ "$MONGO_INITDB_ROOT_PASSWORD" ]; then
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cat >&2 <<-'EOF'
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error: missing 'MONGO_INITDB_ROOT_USERNAME' or 'MONGO_INITDB_ROOT_PASSWORD'
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both must be specified for a user to be created
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EOF
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exit 1
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fi
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if [ -z "$shouldPerformInitdb" ]; then
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# if we've got any /docker-entrypoint-initdb.d/* files to parse later, we should initdb
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for f in /docker-entrypoint-initdb.d/*; do
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case "$f" in
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*.sh|*.js) # this should match the set of files we check for below
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shouldPerformInitdb="$f"
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break
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;;
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esac
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done
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fi
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# check for a few known paths (to determine whether we've already initialized and should thus skip our initdb scripts)
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if [ -n "$shouldPerformInitdb" ]; then
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dbPath="$(_dbPath "$@")"
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for path in \
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"$dbPath/WiredTiger" \
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"$dbPath/journal" \
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"$dbPath/local.0" \
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"$dbPath/storage.bson" \
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; do
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if [ -e "$path" ]; then
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shouldPerformInitdb=
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break
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fi
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done
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fi
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if [ -n "$shouldPerformInitdb" ]; then
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mongodHackedArgs=( "$@" )
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if _parse_config "$@"; then
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_mongod_hack_ensure_arg_val --config "$tempConfigFile" "${mongodHackedArgs[@]}"
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fi
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_mongod_hack_ensure_arg_val --bind_ip 127.0.0.1 "${mongodHackedArgs[@]}"
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_mongod_hack_ensure_arg_val --port 27017 "${mongodHackedArgs[@]}"
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_mongod_hack_ensure_no_arg --bind_ip_all "${mongodHackedArgs[@]}"
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# remove "--auth" and "--replSet" for our initial startup (see https://docs.mongodb.com/manual/tutorial/enable-authentication/#start-mongodb-without-access-control)
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# https://github.com/docker-library/mongo/issues/211
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_mongod_hack_ensure_no_arg --auth "${mongodHackedArgs[@]}"
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if [ "$MONGO_INITDB_ROOT_USERNAME" ] && [ "$MONGO_INITDB_ROOT_PASSWORD" ]; then
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_mongod_hack_ensure_no_arg_val --replSet "${mongodHackedArgs[@]}"
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fi
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sslMode="$(_mongod_hack_have_arg '--sslPEMKeyFile' "$@" && echo 'allowSSL' || echo 'disabled')" # "BadValue: need sslPEMKeyFile when SSL is enabled" vs "BadValue: need to enable SSL via the sslMode flag when using SSL configuration parameters"
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_mongod_hack_ensure_arg_val --sslMode "$sslMode" "${mongodHackedArgs[@]}"
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if stat "/proc/$$/fd/1" > /dev/null && [ -w "/proc/$$/fd/1" ]; then
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# https://github.com/mongodb/mongo/blob/38c0eb538d0fd390c6cb9ce9ae9894153f6e8ef5/src/mongo/db/initialize_server_global_state.cpp#L237-L251
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# https://github.com/docker-library/mongo/issues/164#issuecomment-293965668
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_mongod_hack_ensure_arg_val --logpath "/proc/$$/fd/1" "${mongodHackedArgs[@]}"
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else
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initdbLogPath="$(_dbPath "$@")/docker-initdb.log"
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echo >&2 "warning: initdb logs cannot write to '/proc/$$/fd/1', so they are in '$initdbLogPath' instead"
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_mongod_hack_ensure_arg_val --logpath "$initdbLogPath" "${mongodHackedArgs[@]}"
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fi
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_mongod_hack_ensure_arg --logappend "${mongodHackedArgs[@]}"
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pidfile="${TMPDIR:-/tmp}/docker-entrypoint-temp-mongod.pid"
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rm -f "$pidfile"
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_mongod_hack_ensure_arg_val --pidfilepath "$pidfile" "${mongodHackedArgs[@]}"
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"${mongodHackedArgs[@]}" --fork
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mongo=( mongo --host 127.0.0.1 --port 27017 --quiet )
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# check to see that our "mongod" actually did start up (catches "--help", "--version", MongoDB 3.2 being silly, slow prealloc, etc)
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# https://jira.mongodb.org/browse/SERVER-16292
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tries=30
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while true; do
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if ! { [ -s "$pidfile" ] && ps "$(< "$pidfile")" &> /dev/null; }; then
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# bail ASAP if "mongod" isn't even running
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echo >&2
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echo >&2 "error: $originalArgOne does not appear to have stayed running -- perhaps it had an error?"
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echo >&2
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exit 1
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fi
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if "${mongo[@]}" 'admin' --eval 'quit(0)' &> /dev/null; then
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# success!
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break
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fi
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(( tries-- ))
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if [ "$tries" -le 0 ]; then
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echo >&2
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echo >&2 "error: $originalArgOne does not appear to have accepted connections quickly enough -- perhaps it had an error?"
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echo >&2
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exit 1
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fi
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sleep 1
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done
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if [ "$MONGO_INITDB_ROOT_USERNAME" ] && [ "$MONGO_INITDB_ROOT_PASSWORD" ]; then
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rootAuthDatabase='admin'
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"${mongo[@]}" "$rootAuthDatabase" <<-EOJS
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db.createUser({
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user: $(_js_escape "$MONGO_INITDB_ROOT_USERNAME"),
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pwd: $(_js_escape "$MONGO_INITDB_ROOT_PASSWORD"),
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roles: [ { role: 'root', db: $(_js_escape "$rootAuthDatabase") } ]
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})
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EOJS
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fi
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echo "Heydaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaar"
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export MONGO_INITDB_DATABASE="${MONGO_INITDB_DATABASE:-test}"
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echo
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for f in /docker-entrypoint-initdb.d/*; do
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case "$f" in
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*.sh) echo "$0: running $f"; . "$f" ;;
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*.js) echo "$0: running $f"; "${mongo[@]}" "$MONGO_INITDB_DATABASE" "$f"; echo ;;
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*) echo "$0: ignoring $f" ;;
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esac
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echo
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done
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"${mongodHackedArgs[@]}" --shutdown
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rm -f "$pidfile"
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echo
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echo 'MongoDB init process complete; ready for start up.'
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echo
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fi
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# MongoDB 3.6+ defaults to localhost-only binding
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if mongod --help 2>&1 | grep -q -- --bind_ip_all; then # TODO remove this conditional when 3.4 is no longer supported
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haveBindIp=
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if _mongod_hack_have_arg --bind_ip "$@" || _mongod_hack_have_arg --bind_ip_all "$@"; then
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haveBindIp=1
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elif _parse_config "$@" && jq --exit-status '.net.bindIp // .net.bindIpAll' "$jsonConfigFile" > /dev/null; then
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haveBindIp=1
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fi
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if [ -z "$haveBindIp" ]; then
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# so if no "--bind_ip" is specified, let's add "--bind_ip_all"
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set -- "$@" --bind_ip_all
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fi
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fi
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unset "${!MONGO_INITDB_@}"
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fi
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rm -f "$jsonConfigFile" "$tempConfigFile"
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exec "$@"% |