mapletree/~host-setups/move-komodo-postgres.txt

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----first host setup-------
##backup the db
cd /docker/management
mkdir ./backup
chmod 777 ./backup
docker run --rm --network container:ferretdb -v $(pwd)/backup:/backup mongo:6.0 mongodump --uri="mongodb://admin:admin@127.0.0.1:27017/komodo" --out=/backup
# CRITICAL SAFETY CHECK:
# Ensure these files actually exist and have size > 0
ls -lh ./backup/komodo/
# If you see empty folders or no files, STOP. Do not proceed to step 2.
##destroy the containers
docker compose down -v
##change compose to this
services:
mongo:
image: mongo:7.0
container_name: mongo
restart: always
network_mode: host
command: ["--replSet", "rs0", "--bind_ip_all", "--port", "27017"]
volumes:
- /docker/management/mongodb:/data/db
komodo:
# REVERT TO MOGHTECH
image: ghcr.io/moghtech/komodo-core:latest
container_name: komodo
cpus: 2.0
mem_limit: "2048m"
mem_reservation: "512m"
network_mode: host
env_file:
- /docker/management/.env
volumes:
- /var/run/docker.sock:/var/run/docker.sock:ro
- /root/.ssh:/home/komodo/.ssh:ro
- /docker/management/komodo/config:/config
- /docker/management/komodo/backups:/backups
- /docker/management/komodo/core-etc:/etc/komodo
- /docker/management/komodo/var:/var/lib/komodo
- /docker/management/komodo/repo-cache:/repo-cache
- /docker:/docker
environment:
# CHANGE TO 'URI'
# This tells Komodo: "Here is the full connection string, don't try to parse commas."
- KOMODO_DATABASE_URI=mongodb://127.0.0.1:27017/komodo?directConnection=true&replicaSet=rs0
# Explicitly unset ADDRESS to avoid conflicts
- KOMODO_DATABASE_ADDRESS=
depends_on:
- mongo
restart: unless-stopped
labels:
- "komodo.skip=true"
## up the mongodb service
docker compose up -d mongo
## restore the data to the container
docker run --rm --network host -v $(pwd)/backup:/backup mongo:6.0 mongorestore --uri="mongodb://127.0.0.1:27017/komodo" /backup/komodo
##make sure that mongo knows it's the primary
docker exec -it mongo mongosh --eval 'rs.initiate({_id: "rs0", members: [{ _id: 0, host: "172.16.201.201:27017" }]})'
##make sure the framework is done
##make sure mongo connection string is active in compose
docker compose up -d komodo
##open gui to confirm it works
##restore the data into the framework in mongo
docker run --rm --user 0:0 --network host -v $(pwd)/backup:/backup mongo:6.0 mongorestore --uri="mongodb://127.0.0.1:27017/komodo?replicaSet=rs0" /backup/komodo
##compose up the komodo
docker compose up -d komodo
##validate
----second host base setup-------
##get the env setup
mkdir /docker/managment/mongo
##deploy the same docker-compose.yml as above
##but only start the mongo for now
docker compose up -d mongo
----first host replica setup-------
##get into the original mongo
docker exec -it mongo mongosh
##add the new mongo member
rs.add("172.16.201.106")
##check status
rs.status()
----komodo redeploy-------
##change komodo compose file on both to have this as DB URI
environment:
# LIST BOTH IPs
# This allows the driver to failover automatically.
- KOMODO_DATABASE_URI=mongodb://172.16.201.206:27017,172.16.201.106:27017/komodo?replicaSet=rs0
##redeploy the original komodo
docker compose down komodo && docker compose up -d komodo
##deploy the secondary
docker compose up -d komodo
----second host replica check-------
##get into the second mongo
docker exec -it mongo mongosh
##do a secondary check
db.getMongo().setReadPref('secondary')
#create a stack called "replica-test"
##check that the data exists
use komodo
db.Stack.find({name: "replica-test"})
----add arbiter-------
##already deployed on pve1-lxc2 - redeploy
-->destroy the container
-->delete the mongo-arbiter folder in pve-lxc2/docker
--> use komodo to redeploy the mongo-arbiter
##do the following on whichever mongo is primary to add the arbiter
docker exec -it mongo mongosh
db.adminCommand({
setDefaultRWConcern: 1,
defaultWriteConcern: { w: 1 }
})
##add the arbiter running on pve1-lxc2
rs.addArb("172.16.201.102:27017")
##check DB HA
rs.status()
----now do the lsyncd-------
##make sure pve1-lxc6 has rsync
apt update && apt install rsync -y
##do on PVE2-lxc6
##install lsyncd and rsync
apt update && apt install lsyncd rsync -y
##generate keys
ssh-keygen -t rsa -b 4096
##lock down the keys - ensure root owns it
chown root:root /etc/ssh/ssh_config.d/20-systemd-ssh-proxy.conf
##lock down the keys - Ensure only root can write to it
chmod 644 /etc/ssh/ssh_config.d/20-systemd-ssh-proxy.conf
##May have to do a keygen on the target host
ssh-keygen -A
##send key to pve1-lxc6
ssh-copy-id root@172.16.201.101
## test
ssh root@172.16.201.101
##if it asks for password do this on the other lxc
chmod 700 /root/.ssh
chmod 600 /root/.ssh/authorized_keys
chown -R root:root /root/.ssh
##create config file
mkdir /etc/lsyncd
nano /etc/lsyncd/lsyncd.conf.lua
##paste this
settings {
logfile = "/var/log/lsyncd/lsyncd.log",
statusFile = "/var/log/lsyncd/lsyncd.status",
nodaemon = false,
}
-- The Sync Configuration
sync {
default.rsync,
-- The folder on THIS server to watch
-- CHECK: Is this mapped to /repo in your compose?
source = "/repo/mapletree-pve2lxc6/management/komodo",
-- The Destination
target = "root@172.16.201.106:/repo/mapletree-pve1lxc6/management/komodo",
-- Exclude temporary files
exclude = { '.git', '*.tmp', '*.bak' },
-- Rsync Options (Archive mode, Compress, Delete files on target if deleted on source)
rsync = {
archive = true,
compress = true,
verbose = true,
_extra = { "--omit-dir-times" }
}
}
##make sure the service is gunna work
mkdir -p /var/log/lsyncd
touch /var/log/lsyncd/lsyncd.log
touch /var/log/lsyncd/lsyncd.status
set the stack compose variables to (respectively):
REPO_ROOT=/repo/mapletree-pve2lxc6/management/komodo
REPO_ROOT=/repo/mapletree-pve1lxc6/management/komodo
##change the komodo compose block to include the repo...
volumes:
- ${REPO_ROOT}:/repo
##redeploy the komodos
--> may have to do this cli
##start the sync
systemctl restart lsyncd
systemctl status lsyncd
systemctl enable --now lsyncd
##the check (run on pve2 - 2 sessions)
tail -f /var/log/lsyncd/lsyncd.log
touch /repo/mapletree-pve2lxc6/management/komodo/sync_test.txt
##check on PVE1
ls -l /repo/mapletree-pve1lxc6/management/komodo/
----now do the keepalived setup-------
##Make sure the LXC's are configured for the IP:
echo "net.ipv4.ip_nonlocal_bind=1" >> /etc/sysctl.conf
sysctl -p
##make sure the keepalive folder is created and mounted into the periphery
mkdir /docker/keepalived || true
nano /root/periphery/docker-compose.yml
##don't forget to compose down/up the periphery
docker compose down && docker compose up -d
##deploy the containers
##make sure the vars are done
--> in Komodo