ClickHouse/debian/clickhouse-server.postinst

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#!/bin/sh
set -e
CLICKHOUSE_USER=${CLICKHOUSE_USER:=clickhouse}
CLICKHOUSE_GROUP=${CLICKHOUSE_GROUP:=${CLICKHOUSE_USER}}
CLICKHOUSE_CONFDIR=${CLICKHOUSE_CONFDIR:=/etc/clickhouse-server}
CLICKHOUSE_DATADIR=${CLICKHOUSE_DATADIR:=/var/lib/clickhouse}
CLICKHOUSE_LOGDIR=${CLICKHOUSE_LOGDIR:=/var/log/clickhouse-server}
CLICKHOUSE_BINDIR=${CLICKHOUSE_BINDIR:=/usr/bin}
CLICKHOUSE_GENERIC_PROGRAM=${CLICKHOUSE_GENERIC_PROGRAM:=clickhouse}
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EXTRACT_FROM_CONFIG=${CLICKHOUSE_GENERIC_PROGRAM}-extract-from-config
CLICKHOUSE_CONFIG=$CLICKHOUSE_CONFDIR/config.xml
OS=${OS=`lsb_release -is 2>/dev/null || uname -s ||:`}
. /usr/share/debconf/confmodule
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test -f /etc/default/clickhouse && . /etc/default/clickhouse
if [ "$1" = configure ]; then
if [ -x "/bin/systemctl" ] && [ -f /etc/systemd/system/clickhouse-server.service ] && [ -d /run/systemd/system ]; then
# if old rc.d service present - remove it
if [ -x "/etc/init.d/clickhouse-server" ]; then
update-rc.d clickhouse-server remove
echo "ClickHouse init script has migrated to systemd. Please manually stop old server and restart the service: sudo killall clickhouse-server && sleep 5 && sudo service clickhouse-server restart"
fi
/bin/systemctl daemon-reload
/bin/systemctl enable clickhouse-server
else
# If you downgrading to version older than 1.1.54336 run: systemctl disable clickhouse-server
if [ -x "/etc/init.d/clickhouse-server" ]; then
if [ "$OS" = "rhel" ] || [ "$OS" = "centos" ] || [ "$OS" = "fedora" ]; then
echo # TODO
else
update-rc.d clickhouse-server defaults 19 19 >/dev/null || exit $?
fi
fi
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fi
# Make sure the administrative user exists
if ! getent passwd ${CLICKHOUSE_USER} > /dev/null; then
if [ "$OS" = "rhel" ] || [ "$OS" = "centos" ] || [ "$OS" = "fedora" ]; then
adduser --system --no-create-home --home /nonexistent \
--shell /bin/false ${CLICKHOUSE_USER} > /dev/null
else
adduser --system --disabled-login --no-create-home --home /nonexistent \
--shell /bin/false --group --gecos "ClickHouse server" ${CLICKHOUSE_USER} > /dev/null
fi
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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
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exit 1
fi
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if [ "`id -g ${CLICKHOUSE_GROUP}`" -eq 0 ]; then
echo "The ${CLICKHOUSE_USER} system user must not have root as primary group.
Please fix this and reinstall this package." >&2
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exit 1
fi
if [ -x "$CLICKHOUSE_BINDIR/$EXTRACT_FROM_CONFIG" ] && [ -f "$CLICKHOUSE_CONFIG" ]; then
CLICKHOUSE_DATADIR_FROM_CONFIG=$(su -s $SHELL ${CLICKHOUSE_USER} -c "$CLICKHOUSE_BINDIR/$EXTRACT_FROM_CONFIG --config-file=\"$CLICKHOUSE_CONFIG\" --key=path") ||:
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echo "Path to data directory in ${CLICKHOUSE_CONFIG}: ${CLICKHOUSE_DATADIR_FROM_CONFIG}"
fi
CLICKHOUSE_DATADIR_FROM_CONFIG=${CLICKHOUSE_DATADIR_FROM_CONFIG:=$CLICKHOUSE_DATADIR}
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if [ ! -d ${CLICKHOUSE_DATADIR_FROM_CONFIG} ]; then
mkdir -p ${CLICKHOUSE_DATADIR_FROM_CONFIG}
chown ${CLICKHOUSE_USER}:${CLICKHOUSE_GROUP} ${CLICKHOUSE_DATADIR_FROM_CONFIG}
chmod 700 ${CLICKHOUSE_DATADIR_FROM_CONFIG}
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fi
if [ -d ${CLICKHOUSE_CONFDIR} ]; then
mkdir -p ${CLICKHOUSE_CONFDIR}/users.d
mkdir -p ${CLICKHOUSE_CONFDIR}/config.d
rm -fv ${CLICKHOUSE_CONFDIR}/*-preprocessed.xml ||:
fi
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[ -e ${CLICKHOUSE_CONFDIR}/preprocessed ] || ln -s ${CLICKHOUSE_DATADIR_FROM_CONFIG}/preprocessed_configs ${CLICKHOUSE_CONFDIR}/preprocessed ||:
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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
# Set net_admin capabilities to support introspection of "taskstats" performance metrics from the kernel
# and ipc_lock capabilities to allow mlock of clickhouse binary.
# 1. Check that "setcap" tool exists.
# 2. Check that an arbitrary program with installed capabilities can run.
# 3. Set the capabilities.
# The second is important for Docker and systemd-nspawn.
# When the container has no capabilities,
# but the executable file inside the container has capabilities,
# then attempt to run this file will end up with a cryptic "Operation not permitted" message.
TMPFILE=/tmp/test_setcap.sh
command -v setcap >/dev/null \
&& echo > $TMPFILE && chmod a+x $TMPFILE && $TMPFILE && setcap "cap_net_admin,cap_ipc_lock+ep" $TMPFILE && $TMPFILE && rm $TMPFILE \
&& setcap "cap_net_admin,cap_ipc_lock+ep" "${CLICKHOUSE_BINDIR}/${CLICKHOUSE_GENERIC_PROGRAM}" \
|| echo "Cannot set 'net_admin' or 'ipc_lock' capability for clickhouse binary. This is optional. Taskstats accounting will be disabled. To enable taskstats accounting you may add the required capability later manually."
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# Clean old dynamic compilation results
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if [ -d "${CLICKHOUSE_DATADIR_FROM_CONFIG}/build" ]; then
rm -f ${CLICKHOUSE_DATADIR_FROM_CONFIG}/build/*.cpp ${CLICKHOUSE_DATADIR_FROM_CONFIG}/build/*.so ||:
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fi
db_get clickhouse-server/default-password
defaultpassword="$RET"
if [ -n "$defaultpassword" ]; then
echo "<yandex><users><default><password>$defaultpassword</password></default></users></yandex>" > ${CLICKHOUSE_CONFDIR}/users.d/default-password.xml
fi
# everything went well, so now let's reset the password
db_set clickhouse-server/default-password ""
# ... done with debconf here
db_stop
fi