toincrease/consul-master repository overview

⁠consul-master

Docker container that serves as a consul master cluster by retrieving neccessary metadata via AWS.

⁠Docker registry

The image is available as toincrease/consul-master⁠

⁠Maintenance

Enter any of the consul master containers: docker exec -it consul-server /bin/sh Then:

/ # consul members
Node        Address          Status  Type    Build  Protocol  DC
i-259aedbe  10.0.2.139:8301  alive   server  0.6.4  2         us-east-1
i-3ae307bd  10.0.1.247:8301  failed  server  0.6.4  2         us-east-1
i-ae1f0234  10.0.0.228:8301  alive   server  0.6.4  2         us-east-1
i-f3c42074  10.0.1.46:8301   alive   server  0.6.4  2         us-east-1
/ # consul force-leave i-3ae307bd
/ # consul members
Node        Address          Status  Type    Build  Protocol  DC
i-259aedbe  10.0.2.139:8301  alive   server  0.6.4  2         us-east-1
i-3ae307bd  10.0.1.247:8301  left    server  0.6.4  2         us-east-1
i-ae1f0234  10.0.0.228:8301  alive   server  0.6.4  2         us-east-1
i-f3c42074  10.0.1.46:8301   alive   server  0.6.4  2         us-east-1

⁠Tricks

⁠Deleting all failed non-server instances:

consul members | grep -v server | grep failed | awk '{print $1}' | xargs -I% consul force-leave %

⁠Deleting all failed instances, including servers:

consul members | grep failed | awk '{print $1}' | xargs -I% consul force-leave %

⁠State of master

alias state='curl localhost:8500/v1/status/leader; echo ""; curl localhost:8500/v1/status/peers; echo ""' [ec2-user@ip-10-0-2-139 ~]$ state "10.0.0.108:8300" ["10.0.0.108:8300","10.0.1.247:8300","10.0.2.139:8300"]

⁠All members

for i in 10.0.0.108 10.0.1.247 10.0.2.139; do echo -n "leader of $i is "; curl $i:8500/v1/status/leader; echo ""; done leader of 10.0.0.108 is "10.0.0.108:8300" leader of 10.0.1.247 is "10.0.0.108:8300" leader of 10.0.2.139 is "10.0.0.108:8300"