Created
August 8, 2017 07:19
-
-
Save pulecp/b2c44090d2461935a14aeb4e6cf34b40 to your computer and use it in GitHub Desktop.
Change MongoDB default port
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/bin/bash | |
echo 'DISABLE PUPPET ON ALL MONGO MACHINES AT FIRST' | |
old_port=27017 | |
new_port=27018 | |
# This script change default port of mongod instance and keep old port | |
# redirected to a new port | |
puppet agent --disable 'kayn: changing default mongod port' | |
echo 1 > /proc/sys/net/ipv4/ip_forward | |
iptables -t nat -I PREROUTING -p tcp --dport $old_port -j REDIRECT --to-port $new_port | |
# previous redirect logs a lot of stuff! | |
mv /etc/rsyslog.d/iptables.conf /tmp/ | |
systemctl restart rsyslog | |
sed -i "s/$old_port/$new_port/" /etc/mongod.conf | |
systemctl restart mongod | |
echo 'Now open mongo shell on primary and change the port by in following steps (if you are on primary, you need to stepDown before by `rs.stepDown()`: | |
# load configuration | |
cfg = rs.conf() | |
# use proper ID instead of X and check if the name matchs with the member you are changing a port | |
cfg.members[X].host | |
# change port by | |
cfg.members[X].host = "mongo0X:27018" | |
# reload configuration | |
rs.reconfig(cfg) | |
# now check the replicaSet status and wait until changed member is synced (journal on arbiter can start to grow rapidly, please watch the size by `watch -n60 du -sh /var/lib/mongodb/journal`. If it will grow, you need to stop mongo, remove everything in /var/lib/mongodb/ and start arbiter again). | |
rs.status()' | |
echo "Once the mongos routers and replica sets are reconfigured properly in puppet, remove the redirect firewall rules by: | |
iptables -t nat -D PREROUTING -p tcp --dport $old_port -j REDIRECT --to-port $new_port | |
echo 0 > /proc/sys/net/ipv4/ip_forward | |
and enable puppet" |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment