# 搭建RPC节点
> Solana节点昂贵，对机器性能要求非常高，请自行考虑风险！
根据[官方要求](https://docs.solanalabs.com/operations/requirements#rpc-node-recommendations)，Solana RPC节点若要开启account-index参数的话，至少需要512GB内存。
## 挂载磁盘
官方推荐机器至少3个NVMe盘，一个系统盘，一个存账户数据，一个存账本数据。
除系统盘外，每个硬盘推荐使用2T的存储空间。以下为创建项目目录和挂载磁盘的命令：
```
mkdir /root/sol
mkdir /root/sol/accounts
mkdir /root/sol/ledger
mkdir /root/sol/bin
```
```
# n + e
fdisk /dev/nvme0n1
fdisk /dev/nvme1n1
mkfs -t ext4 /dev/nvme0n1
mkfs -t ext4 /dev/nvme1n1
mount /dev/nvme0n1 /root/sol/ledger
mount /dev/nvme1n1 /root/sol/accounts
vim /etc/fstab
/dev/nvme0n1 /root/sol/ledger ext4 defaults 0 0
/dev/nvme1n1 /root/sol/accounts ext4 defaults 0 0
```
## 将cpu设置为performance模式
Solana节点对cpu主频要求较高，推荐使用高频cpu并将性能设置为performance模式。
```
apt install linux-tools-common linux-tools-$(uname -r)
cpupower frequency-info
cpupower frequency-set --governor performance
watch "grep 'cpu MHz' /proc/cpuinfo"
```
## 下载solana-cli
```
sh -c "$(curl -sSfL https://release.anza.xyz/v2.0.18/install)"
```
```
vim /root/.bashrc
export PATH="/root/.local/share/solana/install/active_release/bin:$PATH"
source /root/.bashrc
solana --version
```
## 创建验证者私钥
```
solana-keygen new -o validator-keypair.json
```
## 系统调优
1. 修改/etc/sysctl.conf
```
vim /etc/sysctl.conf
```
添加如下
```
# Increase UDP buffer sizes
net.core.rmem_default = 134217728
net.core.rmem_max = 134217728
net.core.wmem_default = 134217728
net.core.wmem_max = 134217728
# Increase memory mapped files limit
vm.max_map_count = 1000000
# Increase number of allowed open file descriptors
fs.nr_open = 1000000
```
```
sysctl -p
```
2. 修改/etc/systemd/system.conf
```
vim /etc/systemd/system.conf
```
添加如下
```
DefaultLimitNOFILE=1000000
```
```
systemctl daemon-reload
```
3. 修改/etc/security/limits.conf
```
vim /etc/security/limits.conf
```
添加如下
```
# Increase process file descriptor count limit
* - nofile 1000000
```
```
ulimit -n 1000000 # 手动设置一下，不然需要重启机器
ulimit -n
```
## 开启防火墙
```
sudo ufw allow 22
sudo ufw allow 8000:8020/tcp
sudo ufw allow 8000:8020/udp
sudo ufw allow 8899 # http 端口
sudo ufw allow 8900 # websocket 端口
sudo ufw enable
sudo ufw status
```
## 创建启动脚本和服务
```
vim /root/sol/bin/validator.sh
```
```
#!/bin/bash
exec agave-validator \
--ledger /root/sol/ledger \
--accounts /root/sol/accounts \
--identity /root/validator-keypair.json \
--known-validator 7Np41oeYqPefeNQEHSv1UDhYrehxin3NStELsSKCT4K2 \
--known-validator GdnSyH3YtwcxFvQrVVJMm1JhTS4QVX7MFsX56uJLUfiZ \
--known-validator DE1bawNcRJB9rVm3buyMVfr8mBEoyyu73NBovf2oXJsJ \
--known-validator CakcnaRDHka2gXyfbEd2d3xsvkJkqsLw2akB3zsN1D2S \
--entrypoint entrypoint.mainnet-beta.solana.com:8001 \
--entrypoint entrypoint2.mainnet-beta.solana.com:8001 \
--entrypoint entrypoint3.mainnet-beta.solana.com:8001 \
--entrypoint entrypoint4.mainnet-beta.solana.com:8001 \
--entrypoint entrypoint5.mainnet-beta.solana.com:8001 \
--expected-genesis-hash 5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d \
--full-rpc-api \
--no-voting \
--private-rpc \
--rpc-port 8899 \
--dynamic-port-range 8000-8020 \
--wal-recovery-mode skip_any_corrupted_record \
--limit-ledger-size \
--account-index program-id \
--account-index spl-token-mint \
--account-index spl-token-owner \
--enable-rpc-transaction-history \
--log /root/solana-rpc.log
```
```
chmod +x /root/sol/bin/validator.sh
```
```
vim /etc/systemd/system/sol.service
```
添加如下
```
[Unit]
Description=Solana Validator
After=network.target
StartLimitIntervalSec=0
[Service]
Type=simple
Restart=always
RestartSec=1
User=root
LimitNOFILE=1000000
LogRateLimitIntervalSec=0
Environment="PATH=/bin:/usr/bin:/root/.local/share/solana/install/active_release/bin"
ExecStart=/root/sol/bin/validator.sh
[Install]
WantedBy=multi-user.target
```
至此，可启动Solana RPC节点。
一些系统服务相关命令如下
systemctl start sol
systemctl status sol
systemctl stop sol
systemctl restart sol
systemctl daemon-reload
## 查看日志
```
tail -f /root/solana-rpc.log
journalctl -u sol -f --no-hostname -o cat
```
## 查看同步进度
```
solana catchup --our-localhost
```
## 参考
1.
2.
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