installing kubernetes centos 7

etcd.md

Running By Hand

etcd --name infra0 \
  --initial-advertise-peer-urls http://192.168.1.101:2380 \
  --listen-peer-urls http://192.168.1.101:2380 \
  --listen-client-urls http://192.168.1.101:2379,http://127.0.0.1:2379 \
  --advertise-client-urls http://192.168.1.101:2379 \
  --initial-cluster-token huber-cluster \
  --initial-cluster infra0=http://192.168.1.101:2380,infra1=http://192.168.1.102:2380,infra2=http://192.168.1.103:2380 \
  --initial-cluster-state new

etcd --name infra1 \
  --initial-advertise-peer-urls http://192.168.1.102:2380 \
  --listen-peer-urls http://192.168.1.102:2380 \
  --listen-client-urls http://192.168.1.102:2379,http://127.0.0.1:2379 \
  --advertise-client-urls http://192.168.1.102:2379 \
  --initial-cluster-token huber-cluster \
  --initial-cluster infra0=http://192.168.1.101:2380,infra1=http://192.168.1.102:2380,infra2=http://192.168.1.103:2380 \
  --initial-cluster-state new

etcd --name infra2 \ 
  --initial-advertise-peer-urls http://192.168.1.103:2380 \
  --listen-peer-urls http://192.168.1.103:2380 \
  --listen-client-urls http://192.168.1.103:2379,http://127.0.0.1:2379 \
  --advertise-client-urls http://192.168.1.103:2379 \
  --initial-cluster-token huber-cluster \
  --initial-cluster infra0=http://192.168.1.101:2380,infra1=http://192.168.1.102:2380,infra2=http://192.168.1.103:2380 \
  --initial-cluster-state new

Running as Service

/etc/etcd/etc.conf

# [member]
ETCD_NAME=infra2
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
#ETCD_WAL_DIR=""
#ETCD_SNAPSHOT_COUNT="10000"
#ETCD_HEARTBEAT_INTERVAL="100"
#ETCD_ELECTION_TIMEOUT="1000"
ETCD_LISTEN_PEER_URLS="http://192.168.1.103:2380"
ETCD_LISTEN_CLIENT_URLS="http://192.168.1.103:2379,http://127.0.0.1:2379"
#ETCD_MAX_SNAPSHOTS="5"
#ETCD_MAX_WALS="5"
#ETCD_CORS=""
#
#[cluster]
ETCD_INITIAL_ADVERTISE_PEER_URLS="http://192.168.1.103:2380"
# if you use different ETCD_NAME (e.g. test), set ETCD_INITIAL_CLUSTER value for this name, i.e. "test=http://..."
ETCD_INITIAL_CLUSTER="infra0=http://192.168.1.101:2380,infra1=http://192.168.1.102:2380,infra2=http://192.168.1.103:2380"
ETCD_INITIAL_CLUSTER_STATE="new"
ETCD_INITIAL_CLUSTER_TOKEN="huber-cluster"
ETCD_ADVERTISE_CLIENT_URLS="http://192.168.1.103:2379"
#ETCD_DISCOVERY=""
#ETCD_DISCOVERY_SRV=""
#ETCD_DISCOVERY_FALLBACK="proxy"
#ETCD_DISCOVERY_PROXY=""
#
#[proxy]
#ETCD_PROXY="off"
#ETCD_PROXY_FAILURE_WAIT="5000"
#ETCD_PROXY_REFRESH_INTERVAL="30000"
#ETCD_PROXY_DIAL_TIMEOUT="1000"
#ETCD_PROXY_WRITE_TIMEOUT="5000"
#ETCD_PROXY_READ_TIMEOUT="0"
#
#[security]
#ETCD_CERT_FILE=""
#ETCD_KEY_FILE=""
#ETCD_CLIENT_CERT_AUTH="false"
#ETCD_TRUSTED_CA_FILE=""
#ETCD_PEER_CERT_FILE=""
#ETCD_PEER_KEY_FILE=""
#ETCD_PEER_CLIENT_CERT_AUTH="false"
#ETCD_PEER_TRUSTED_CA_FILE=""
#
#[logging]
#ETCD_DEBUG="false"
# examples for -log-package-levels etcdserver=WARNING,security=DEBUG
#ETCD_LOG_PACKAGE_LEVELS=""

/usr/lib/systemd/system/etcd.service

[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
Type=notify
WorkingDirectory=/var/lib/etcd/
EnvironmentFile=-/etc/etcd/etcd.conf
User=etcd
# set GOMAXPROCS to number of processors
ExecStart=/usr/bin/etcd
Restart=on-failure
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

install-ha-kubernetes.md

kubernetes documentation for installing HA