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linux配置虚拟内存

在Linux中,可以通过修改 /etc/sysctl.conf文件来配置虚拟内存。打开文件并添加以下内容:,,“ ,vm.swappiness = 10,vm.vfs_cache_pressure = 50,vm.dirty_ratio = 60,vm.dirty_background_ratio = 10,vm.dirty_expire_centisecs = 120000,` ,,保存文件并运行以下命令使更改生效:,,` bash,sudo sysctl -p,“

在Linux上配置虚拟化存储,如Ceph,可以提供高性能、高可靠性和可扩展性的存储解决方案,以下是如何在Linux上配置Ceph的详细步骤:

1、安装Ceph

需要在Linux服务器上安装Ceph,可以使用以下命令安装Ceph:

sudo aptget update
sudo aptget install ceph cephfuse cephcommon cephradosgw libcephfs2

2、配置Ceph集群

接下来,需要配置Ceph集群,创建一个名为/etc/ceph的目录,并创建ceph.conf文件:

sudo mkdir /etc/ceph
sudo touch /etc/ceph/ceph.conf

编辑ceph.conf文件,添加以下内容:

[global]
fsid = {uuid}
mon_initial_members = {ip1} {ip2} {ip3}
mon_host = {ip1} {ip2} {ip3}
auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx
osd_pool_default_size = 2
osd_pool_default_min_size = 1
osd_pool_default_pg_num = 64
osd_crush_chooseleaf_type = 0
osd_crush_chooseleaf_weight = 0

将{uuid}替换为一个唯一的UUID,将{ip1}、{ip2}和{ip3}替换为Ceph节点的IP地址。

3、初始化Ceph集群

使用以下命令初始化Ceph集群:

sudo cephdeploy new {node1} {node2} {node3} release {version} c /etc/ceph/ceph.conf yes

将{node1}、{node2}、{node3}和{version}替换为实际的节点名称和Ceph版本。

4、启动并启用Ceph服务

使用以下命令启动并启用Ceph服务:

sudo systemctl enable cephmon.target cephmgr.target cephosd.target cephfuse.target cephrgw.target ceph.target
sudo systemctl start cephmon.target cephmgr.target cephosd.target cephfuse.target cephrgw.target ceph.target

5、配置客户端访问Ceph集群

要配置客户端访问Ceph集群,需要创建一个名为/etc/ceph/ceph.client.{username}的配置文件,其中{username}是客户端用户名,在该文件中,添加以下内容:

[global]
fsid = {uuid}
mon_initial_members = {ip1} {ip2} {ip3}
auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx

将{uuid}替换为实际的UUID,将{ip1}、{ip2}和{ip3}替换为Ceph节点的IP地址,将客户端用户的密钥添加到Ceph集群中:

sudo cephauthtool createkeyring /etc/ceph/ceph.client.{username}/keyring genkey n client.{username} cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *' cap mon 'allow profile rbd' cap osd 'allow *' cap mgr 'allow *' cap osd 'allow *'outfile /etc/ceph/ceph.client.{username}/keyring /etc/ceph/ceph.client.{username}/keyringsecret && chown {username}:{username} /etc/ceph/ceph.client.{username}/keyring /etc/ceph/ceph.client.{username}/keyringsecret && chmod u+rw /etc/ceph/ceph.client.{username}/keyring /etc/ceph/ceph.client.{username}/keyringsecret && chmod g+rw /etc/ceph/ceph.client.{username}/keyring /etc/ceph/ceph.client.{username}/keyringsecret && chmod o+rw /etc/ceph/ceph.client.{username}/keyring /etc/ceph/ceph.client.{username}/keyringsecret && chown root:root /etc/ceph/ceph.client.{username}/keyring /etc/ceph/ceph.client.{username}/keyringsecret && chmod u=rw,g=r,o= /etc/ceph/ceph.client.{username}/keyring /etc/ceph/ceph.client.{username}/keyringsecret && chown root:root /etc/ceph/ceph.client.{username}/keyring /etc/ceph/ceph.client.{username}/keyringsecret && chmod u=rw,g=r,o= /etc/ceph/ceph.client.{username}/keyring /etc/ceph/ceph.client.{username}/keyringsecret && chown root:root /etc/ceph/ceph.client.{username}/keyring /etc/ceph/ceph.client.{username}/keyringsecret && chmod u=rw,g=r,o= /etc/ceph/ceph.client.{username}/keyring /etc/ceph/cachingsha2wipesumsecret && chown root:root /etc/ceph/cachingsha2wipesumsecret && chmod u=rw,g=r,o= /etc/
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