Shulou(Shulou.com)06/02 Report--

Etcd is a distributed key-value storage system based on Raft, developed by CoreOS, and is often used for service discovery, shared configuration and concurrency control (such as leader election, distributed locking, etc.). Kubernetes uses etcd to store all running data.

Deployment preparation

All operations are performed on the devops machine, the relevant scripts are edited, and then executed uniformly through the ansible script module.

Define the environment variable # Variable parameter setting # # ETCD_INSTALL_PATH= "/ data/apps/k8s/etcd" ETCD_BIN_DIR= "${ETCD_INSTALL_PATH} / bin" ETCD_DATA_DIR= "${ETCD_INSTALL_PATH} / data" ETCD_WAL_DIR= "${ETCD_INSTALL_PATH} / wal" N01 = "master" -k8smurn01 = https://10.10.10.22:2380"N02="master-k8s-n02=https://10.10.10.23:2380"N03="master-k8s-n03=https://10.10.10.24:2380"ETCD_ENPOIDTS="$N01, N02 CA_PATH= / etc/k8s/ssl "SOFTWARE=" / root/software "VERSION=v3.3.13PACKAGE=" etcd-$ {VERSION}-linux-amd64.tar.gz "HOSTNAME= `hostname`DOWNLOAD _ URL=" https://github.com/devops-apps/download/raw/master/etcd/${PACKAG}"ETH_INTERFACE=eth2LISTEN_IP=$(ifconfig | grep-A1 ${ETH_INTERFACE} | grep inet | awk'{print $2}') USER=k8s downloads and distributes etcd binaries

Log in to devops to visit the release page of etcd to download the latest version of the release package and synchronize it to the three master three nodes / root/software directory through ansible:

Wget $DOWNLOAD_URL-P $SOFTWARE2 deploy etcd cluster

On the devops host, use ansible to do the following for each of the three master nodes:

2.1 install etcd binary execution command # 1.Check if the install directory exists.if [!-d $ETCD_BIN_DIR]; then mkdir-p $ETCD_BIN_DIR mkdir-p $ETCD_DATA_DIR mkdir-p $ETCD_WAL_DIRfi### 2.Install etcd binary of kubernetes.if [!-f "$SOFTWARE/etcd-$ {VERSION}-linux-amd64.tar.gz"] Then sudo wget $DOWNLOAD_URL-P $SOFTWARE > > / tmp/install.log 2 > & 1ficd $SOFTWARE & & tar-xzf etcd-$ {VERSION}-linux-amd64.tar.gz-C. / cp-fp etcd-$ {VERSION}-linux-amd64/etcd* $ETCD_BIN_DIRln-sf $ETCD_BIN_DIR/ {etcd Etcdctl} / usr/local/binsudo chmod-R 755 $ETCD_INSTALL_PATHsudo chown-R $USER:$USER $ETCD_INSTALL_PATH2.2 create etcd's systemd unit startup service file cat > / usr/lib/systemd/system/etcd.service

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