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# Postgres-XL
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https://www.postgres-xl.org
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https://www.postgres-xl.org/documentation/install-short.html
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https://www.postgres-xl.org/documentation/install-procedure.html
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# Set up 9 servers
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Data nodes:
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pgxl1
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pgxl2
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pgxl3
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pgxl4
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pgxl5
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GTM:
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pgxl-gtm-1
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pgxl-gtm-2
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Coordinators:
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pgxl-coord-1
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pgxl-coord-2
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pgxl-coord-3
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# Set up SSH between hosts
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ssh-keygen -t ed25519
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set up root ssh between all nodes
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# /etc/hosts
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set up /etc/hosts with all cluster name/IPs.
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Set up /etc/hosts with all cluster name/IPs for Postgres interface, with pg- prefix
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# Get source
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Binary:
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wget https://www.postgres-xl.org/downloads/postgres-xl-10r1.tar.gz
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Git (better):
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git clone https://git.postgresql.org/git/postgres-xl.git
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# Install Dependencies
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apt install build-essential bison flex libreadline-dev zlib1g-dev
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# Build
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git checkout remotes/origin/XL_10_STABLE
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mkdir build_dir
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cd build_dir
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../configure
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make -j8
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sudo make install
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# Configure
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adduser postgres
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Run this as root:
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/sbin/ldconfig /usr/local/pgsql/lib
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XXX no?
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Add this to ~/.bashrc
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LD_LIBRARY_PATH=/usr/local/pgsql/lib
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export LD_LIBRARY_PATH
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Add this to ~/.bashrc
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PATH=/usr/local/pgsql/bin:$PATH
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export PATH
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XXX set up user postgres to ssh to all nodes ?
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https://www.postgres-xl.org/documentation/pgxc-ctl.html
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Log into pgxl1, run:
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sudo su - postgres
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pgxc_ctl
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At PGXC promt run:
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prepare config empty
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add gtm master name host port dir
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add gtm slave name host port dir
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add gtm_proxy name host port dir
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add coordinator master name host port pooler dir extraServerConf extraPgHbaConf
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add coordinator slave name host port pooler dir archDir
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add datanode master name host port pooler dir waldir extraServerConf extraPgHbaConf
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add datanode slave name host port pooler dir waldir archDir
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XLDIR=/usr/local/pgsql/
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pgxc_ctl prepare config empty
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pgxc_ctl add gtm master gtm_1 pg-pgxl-gtm-1 20001 "$XLDIR/gtm"
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XXX slave or proxy?
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pgxc_ctl add gtm slave gtm_2 pg-pgxl-gtm-2 20001 "$XLDIR/gtm"
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pgxc_ctl add gtm_proxy gtm_2 pg-pgxl-gtm-2 20001 "$XLDIR/gtm"
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pgxc_ctl add coordinator master coord_1 pg-pgxl-coord-1 30001 31001 "$XLDIR/coord-1" none none
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XXX master or slaves?
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pgxc_ctl add coordinator master coord_2 pg-pgxl-coord-2 30001 31001 "$XLDIR/coord-2" none none
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pgxc_ctl add coordinator master coord_3 pg-pgxl-coord-3 30001 31001 "$XLDIR/coord-3" none none
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pgxc_ctl add datanode master datanode_1 pg-pgxl1 40001 41001 "$XLDIR/data-1" none none none
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XXX master or slaves?
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pgxc_ctl add datanode master datanode_2 pg-pgxl2 40001 41001 "$XLDIR/data-2" none none none
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pgxc_ctl add datanode master datanode_3 pg-pgxl3 40001 41001 "$XLDIR/data-3" none none none
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pgxc_ctl add datanode master datanode_4 pg-pgxl4 40001 41001 "$XLDIR/data-4" none none none
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pgxc_ctl add datanode master datanode_5 pg-pgxl5 40001 41001 "$XLDIR/data-5" none none none
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pgxc_ctl monitor all createdb -p 30001 test
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# Open Up firewall.
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Open up firewall ports for postgres and others.....
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# OmniDB
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wget https://omnidb.org/dist/2.12.0/omnidb-server_2.12.0-debian-amd64.deb
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dpkg -i omnidb-server_2.12.0-debian-amd64.deb
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Open firewall port 8000 and 25482
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This file isn't used: /opt/omnidb-server/omnidb.conf
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In the pre-packaged .deb, it runs as root... Config is here:
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/root/.omnidb/omnidb-server/omnidb.conf
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listening_address = 0.0.0.0
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Add Postgres-XL plugin:
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wget https://omnidb.org/dist/plugins/omnidb-xl_1.0.0.zip
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unzip omnidb-xl_1.0.0.zip
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sudo cp -r plugins/ static/ /opt/omnidb-server/OmniDB_app/
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sudo systemctl restart omnidb
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Log in with admin/admin and set up users/pass.
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# Notes
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Maybe add build dependency python3-dev (?) for PL/Python shared library.
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Maybe gettext.
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Maybe OpenSSL.
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XXX change prefix ?
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