ClickHouse/debian/clickhouse-server-base.postinst

#!/bin/sh
set -e

CLICKHOUSE_USER=clickhouse
CLICKHOUSE_GROUP=${CLICKHOUSE_USER}
CLICKHOUSE_DATADIR=/var/lib/clickhouse
CLICKHOUSE_LOGDIR=/var/log/clickhouse-server
CLICKHOUSE_SERVER_ETCDIR=/etc/clickhouse-server


if [ "$1" = configure ]; then

    if [ -x "/etc/init.d/clickhouse-server" ]; then
        update-rc.d clickhouse-server defaults 19 19 >/dev/null || exit $?
    fi

    # Make sure the administrative user exists
    if ! getent passwd ${CLICKHOUSE_USER} > /dev/null; then
        adduser --system --disabled-login --no-create-home --home /nonexistent \
            --shell /bin/false --group --gecos "Clickhouse server" clickhouse > /dev/null
    fi

    # if the user was created manually, make sure the group is there as well
    if ! getent group ${CLICKHOUSE_GROUP} > /dev/null; then
        addgroup --system ${CLICKHOUSE_GROUP} > /dev/null
    fi

    # make sure user is in the correct group
    if ! id -Gn ${CLICKHOUSE_USER} | grep -qw ${CLICKHOUSE_USER}; then
        adduser ${CLICKHOUSE_USER} ${CLICKHOUSE_GROUP} > /dev/null
    fi

    # check validity of user and group
    if [ "`id -u ${CLICKHOUSE_USER}`" -eq 0 ]; then
        echo "The ${CLICKHOUSE_USER} system user must not have uid 0 (root).
Please fix this and reinstall this package." >&2
        exit 1
    fi

    if [ "`id -g ${CLICKHOUSE_GROUP}`" -eq 0 ]; then
        echo "The ${CLICKHOUSE_USER} system user must not have root as primary group.
Please fix this and reinstall this package." >&2
        exit 1
    fi

    if [ ! -d ${CLICKHOUSE_DATADIR} ]; then
        mkdir -p ${CLICKHOUSE_DATADIR}
        chown ${CLICKHOUSE_USER}:${CLICKHOUSE_GROUP} ${CLICKHOUSE_DATADIR}
        chmod 700 ${CLICKHOUSE_DATADIR}
    fi

    if [ ! -d ${CLICKHOUSE_LOGDIR} ]; then
        mkdir -p ${CLICKHOUSE_LOGDIR}
        chown root:${CLICKHOUSE_GROUP} ${CLICKHOUSE_LOGDIR}
        # Allow everyone to read logs, root and clickhouse to read-write
        chmod 775 ${CLICKHOUSE_LOGDIR}
    fi


    if [ -d ${CLICKHOUSE_LOGDIR} ]; then
        # only for compatibility for old metrika user, remove string after 2017-06-01
        su -s /bin/sh ${CLICKHOUSE_USER} -c "test -w ${CLICKHOUSE_LOGDIR}" || chown -R root:${CLICKHOUSE_GROUP} ${CLICKHOUSE_LOGDIR}; chmod -R ug+rw ${CLICKHOUSE_LOGDIR}
    fi


    if [ -d ${CLICKHOUSE_SERVER_ETCDIR} ]; then
        # -R only for compatibility for old metrika user, remove -R after 2017-06-01
        su -s /bin/sh ${CLICKHOUSE_USER} -c "test -w ${CLICKHOUSE_SERVER_ETCDIR}" || chown -R ${CLICKHOUSE_USER}:${CLICKHOUSE_GROUP} ${CLICKHOUSE_SERVER_ETCDIR}
    fi


    # Clean old dynamic compilation results
    if [ -d "${CLICKHOUSE_DATADIR}/build" ]; then
        rm -f ${CLICKHOUSE_DATADIR}/build/*.cpp ${CLICKHOUSE_DATADIR}/build/*.so ||:
    fi

fi