Add etcd to a cluster

gistfile1.txt

In general, but not complete:  https://access.redhat.com/articles/2650151

cd /etc/etcd
export NEW_ETCD="ip-172-31-31-215.us-west-2.compute.internal"
export CN=$NEW_ETCD
export SAN="IP:172.31.31.215"
export PREFIX="./generated_certs/etcd-$CN/"
mkdir $PREFIX

#generate cert/key/ca tarball

openssl req -new -keyout ${PREFIX}server.key -config ca/openssl.cnf -out ${PREFIX}server.csr -reqexts etcd_v3_req -batch -nodes -subj /CN=$CN
openssl ca -name etcd_ca -config ca/openssl.cnf -out ${PREFIX}server.crt -in ${PREFIX}server.csr -extensions etcd_v3_ca_server -batch
openssl req -new -keyout ${PREFIX}peer.key -config ca/openssl.cnf -out ${PREFIX}peer.csr -reqexts etcd_v3_req -batch -nodes -subj /CN=$CN
openssl ca -name etcd_ca -config ca/openssl.cnf -out ${PREFIX}peer.crt -in ${PREFIX}peer.csr -extensions etcd_v3_ca_peer -batch
cp ca.crt ${PREFIX}
cp etcd.conf ${PREFIX}
tar czvf generated_certs/etcd-${CN}.tgz -C ${PREFIX} .

#add member to cluster
export ETCD_CA_HOST=ip-172-31-30-194.us-west-2.compute.internal
export NEW_ETCD=ip-172-31-31-215.us-west-2.compute.internal
export NEW_ETCD_IP=172.31.31.215
etcdctl -C https://${ETCD_CA_HOST}:2379 --ca-file=/etc/etcd/ca.crt     --cert-file=/etc/etcd/peer.crt     --key-file=/etc/etcd/peer.key member add ${NEW_ETCD} https://${NEW_ETCD_IP}:2380
etcdctl --cert-file /etc/etcd/peer.crt --key-file /etc/etcd/peer.key --ca-file /etc/etcd/ca.crt --endpoints https://ip-172-31-30-194.us-west-2.compute.internal:2379,https://ip-172-31-30-193.us-west-2.compute.internal:2379,https://ip-172-31-30-192.us-west-2.compute.internal:2379 cluster-health

# scp tarball to new server and configure
untar tarball in /etc/etcd
chown etcd:etcd /etc/etcd/*
replace values in etcd.conf with generated values from etcdctl member add above
fix up any other urls in etcd.conf
start the service

etcdctl --cert-file /etc/etcd/peer.crt --key-file /etc/etcd/peer.key --ca-file /etc/etcd/ca.crt --endpoints https://ip-172-31-30-194.us-west-2.compute.internal:2379,https://ip-172-31-30-193.us-west-2.compute.internal:2379,https://ip-172-31-30-192.us-west-2.compute.internal:2379 cluster-health