Generate Self-signed Certificates
Overview
This document describes how to generate self-signed certificates using cfssl.
Assume that the topology of the instance cluster is as follows:
| Name | Host IP | Services |
|---|---|---|
| node1 | 172.16.10.1 | PD1, TiDB1 |
| node2 | 172.16.10.2 | PD2, TiDB2 |
| node3 | 172.16.10.3 | PD3 |
| node4 | 172.16.10.4 | TiKV1 |
| node5 | 172.16.10.5 | TiKV2 |
| node6 | 172.16.10.6 | TiKV3 |
Download cfssl
Assume that the host is x86_64 Linux:
mkdir ~/bin
curl -s -L -o ~/bin/cfssl https://pkg.cfssl.org/R1.2/cfssl_linux-amd64
curl -s -L -o ~/bin/cfssljson https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
chmod +x ~/bin/{cfssl,cfssljson}
export PATH=$PATH:~/binInitialize the certificate authority
To make it easy for modification later, generate the default configuration of cfssl:
mkdir ~/cfssl
cd ~/cfssl
cfssl print-defaults config > ca-config.json
cfssl print-defaults csr > ca-csr.jsonGenerate certificates
Certificates description
- tidb-server certificate: used by TiDB to authenticate TiDB for other components and clients
- tikv-server certificate: used by TiKV to authenticate TiKV for other components and clients
- pd-server certificate: used by PD to authenticate PD for other components and clients
- client certificate: used to authenticate the clients from PD, TiKV and TiDB, such as
pd-ctl,tikv-ctlandpd-recover
Configure the CA option
Edit ca-config.json according to your need:
{
"signing": {
"default": {
"expiry": "43800h"
},
"profiles": {
"server": {
"expiry": "43800h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
},
"client": {
"expiry": "43800h",
"usages": [
"signing",
"key encipherment",
"client auth"
]
}
}
}
}Edit ca-csr.json according to your need:
{
"CN": "My own CA",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Beijing",
"O": "PingCAP",
"ST": "Beijing"
}
]
}Generate the CA certificate
cfssl gencert -initca ca-csr.json | cfssljson -bare ca -The command above generates the following files:
ca-key.pem
ca.csr
ca.pemGenerate the server certificate
The IP address of all components and 127.0.0.1 are included in hostname.
echo '{"CN":"tidb-server","hosts":[""],"key":{"algo":"rsa","size":2048}}' | cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server -hostname="172.16.10.1,172.16.10.2,127.0.0.1" - | cfssljson -bare tidb-server
echo '{"CN":"tikv-server","hosts":[""],"key":{"algo":"rsa","size":2048}}' | cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server -hostname="172.16.10.4,172.16.10.5,172.16.10.6,127.0.0.1" - | cfssljson -bare tikv-server
echo '{"CN":"pd-server","hosts":[""],"key":{"algo":"rsa","size":2048}}' | cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server -hostname="172.16.10.1,172.16.10.2,172.16.10.3,127.0.0.1" - | cfssljson -bare pd-serverThe command above generates the following files:
tidb-server-key.pem tikv-server-key.pem pd-server-key.pem
tidb-server.csr tikv-server.csr pd-server.csr
tidb-server.pem tikv-server.pem pd-server.pemGenerate the client certificate
echo '{"CN":"client","hosts":[""],"key":{"algo":"rsa","size":2048}}' | cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client -hostname="" - | cfssljson -bare clientThe command above generates the following files:
client-key.pem
client.csr
client.pem
"Generate Self-signed Certificates"
was last updated
Jul 26 2018:
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