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Quick Deploy vm ESXi s Terraform

Pozdravljeni vsi, moje ime je Ivan in sem alkoholni sistemski administrator (OPS).

Rad bi vam povedal, kako namestim virtualne stroje na ESXi brez vCenter z uporabo Terraform.

Precej pogosto morate namestiti / znova ustvariti virtualne stroje, da preizkusite to ali ono aplikacijo. Zaradi lenobe sem razmišljal o avtomatizaciji procesa. Iskanje me je pripeljalo do čudovitega izdelka podjetja hashicorp, terraform.

Mislim, da veliko ljudi ve, kaj je Terraform, in kdo ne ve, je to aplikacija za upravljanje katerega koli oblaka, infrastrukture ali storitve z uporabo koncepta IasC (Infrastruktura kot koda).

Kot virtualizacijsko okolje uporabljam ESXi. Precej preprosto, priročno in zanesljivo.
Predvidevam vprašanje.

Zakaj teraformirati, če lahko uporabljate strežnik vCenter?

Seveda lahko, ampak. Prvič, to je dodatna licenca, drugič, ta izdelek je zelo intenziven in preprosto ne ustreza mojemu domačemu strežniku, in tretjič, možnost nadgradnje veščin.

Platforma Intel NUC deluje kot strežnik:

CPU: 2 CPUs x Intel(R) Core(TM) i3-4010U CPU @ 1.70GHz
RAM: 8Gb
HDD: 500Gb
ESXi version: ESXi-6.5.0-4564106-standard (VMware, Inc.)

In tako, najprej najprej.

Zaenkrat nastavimo esxi in sicer v nastavitvah požarnega zidu odpremo vrata VNC.

Privzeto je datoteka zaščitena pred pisanjem. Izvajamo naslednje manipulacije:

chmod 644 /etc/vmware/firewall/service.xml
chmod +t /etc/vmware/firewall/service.xml
vi /etc/vmware/firewall/service.xml

pripni naslednji blok na konec datoteke:

<service id="1000">
  <id>packer-vnc</id>
  <rule id="0000">
    <direction>inbound</direction>
    <protocol>tcp</protocol>
    <porttype>dst</porttype>
    <port>
      <begin>5900</begin>
      <end>6000</end>
    </port>
  </rule>
  <enabled>true</enabled>
  <required>true</required>
</service>

Izhod, shrani. Spremenite pravice nazaj in znova zaženite storitev:

chmod 444 /etc/vmware/firewall/service.xml
esxcli network firewall refresh

Dejansko do ponovnega zagona gostitelja. Po tem bo treba to manipulacijo ponoviti.

Nadalje bom vse delo opravljal v virtualnem stroju na istem strežniku.

Značilnosti:

OS: Centos 7 x86_64 minimal
RAM: 1GB
HDD: 20GB
Selinux: disable
firewalld: disable

Naprej, potrebujemo pakirnica, prav tako produkt podjetja HashiCorp.

Potreben je za samodejno sestavljanje "zlate" slike. ki jih bomo uporabljali v prihodnje.

yum install unzip git -y
curl -O https://releases.hashicorp.com/packer/1.5.5/packer_1.5.5_linux_amd64.zip
unzip packer_1.5.5_linux_amd64.zip -d /usr/bin && rm -rf packer_1.5.5_linux_amd64.zip
packer version
Packer v1.5.5

Na poti pakirna različica lahko pride do napake, saj lahko RedHat-based vsebuje paket z istim imenom.

which -a packer
/usr/sbin/packer

Za rešitev lahko ustvarite simbolno povezavo ali uporabite absolutno pot /usr/bin/packer.

Zdaj potrebujemo ovftool Naložite povezavo. Prenesite, postavite na strežnik in namestite:

chmod +x VMware-ovftool-4.4.0-15722219-lin.x86_64.bundle
./VMware-ovftool-4.4.0-15722219-lin.x86_64.bundle
Extracting VMware Installer...done.
You must accept the VMware OVF Tool component for Linux End User
License Agreement to continue.  Press Enter to proceed.
VMWARE END USER LICENSE AGREEMENT
Do you agree? [yes/no]:yes
The product is ready to be installed.  Press Enter to begin
installation or Ctrl-C to cancel. 
Installing VMware OVF Tool component for Linux 4.4.0
    Configuring...
[######################################################################] 100%
Installation was successful.

Gremo naprej.

Na githu sem pripravil vse, kar potrebujete. 

git clone https://github.com/letnab/create-and-deploy-esxi.git && cd create-and-deploy-esxi

V mapo iso namestiti morate distribucijski komplet operacijskega sistema. V mojem primeru je to centos 7.

Prav tako morate urediti datoteko. centos-7-base.json:

variables: указать свои данные для подключения
iso_urls: указать актуальный
iso_checksum: чексумма вашего образа

Po vseh spremembah zaženite sklop:

/usr/bin/packer build centos-7-base.json

Če je vse pravilno konfigurirano in podano, boste videli sliko samodejne namestitve operacijskega sistema. Ta postopek mi vzame 7-8 minut.

Po uspešnem zaključku v mapi izhodni pakirnik-centos7-x86_64 ova datoteka bo najdena.

Namestite Terraform:

curl -O https://releases.hashicorp.com/terraform/0.12.24/terraform_0.12.24_linux_amd64.zip
unzip terraform_0.12.24_linux_amd64.zip -d /usr/bin/ && rm -rf terraform_0.12.24_linux_amd64.zip
terraform version
Terraform v0.12.24

Ker Terraform nima ponudnika za ESXi, ga morate zgraditi.

Postavili smo:

cd /tmp
curl -O https://dl.google.com/go/go1.14.2.linux-amd64.tar.gz
tar -C /usr/local -xzf go1.14.2.linux-amd64.tar.gz && rm -rf go1.14.2.linux-amd64.tar.gz
export PATH=$PATH:/usr/local/go/bin
go version
go version go1.14.2 linux/amd64

Nato zberemo ponudnika:

go get -u -v golang.org/x/crypto/ssh
go get -u -v github.com/hashicorp/terraform
go get -u -v github.com/josenk/terraform-provider-esxi
export GOPATH="$HOME/go"
cd $GOPATH/src/github.com/josenk/terraform-provider-esxi
CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -ldflags '-w -extldflags "-static"' -o terraform-provider-esxi_`cat version`
cp terraform-provider-esxi_`cat version` /usr/bin

Smo na cilju. Pojdimo razviti našo sliko.

Gremo v mapo:

cd /root/create-and-deploy-esxi/centos7

Najprej uredite datoteko spremenljivke.tf. Določiti morate povezavo s strežnikom ESXi.

V datoteki network_config.cfg vsebujejo omrežne nastavitve bodočega virtualnega stroja. Spremenite se po svojih potrebah in zaženite enovrstičnico:

sed -i -e '2d' -e '3i "network": "'$(gzip < network_config.cfg| base64 | tr -d 'n')'",' metadata.json

No, v datoteki main.tf spremenite pot do datoteke ova na svojo, če je drugačna.

Trenutek resnice.

terraform init
Initializing the backend...

Initializing provider plugins...

The following providers do not have any version constraints in configuration,
so the latest version was installed.

To prevent automatic upgrades to new major versions that may contain breaking
changes, it is recommended to add version = "..." constraints to the
corresponding provider blocks in configuration, with the constraint strings
suggested below.

* provider.esxi: version = "~> 1.6"
* provider.template: version = "~> 2.1"

Terraform has been successfully initialized!

You may now begin working with Terraform. Try running "terraform plan" to see
any changes that are required for your infrastructure. All Terraform commands
should now work.

If you ever set or change modules or backend configuration for Terraform,
rerun this command to reinitialize your working directory. If you forget, other
commands will detect it and remind you to do so if necessary.

terraform plan
Refreshing Terraform state in-memory prior to plan...
The refreshed state will be used to calculate this plan, but will not be
persisted to local or remote state storage.

data.template_file.Default: Refreshing state...
data.template_file.network_config: Refreshing state...

------------------------------------------------------------------------

An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:

  # esxi_guest.Default will be created
  + resource "esxi_guest" "Default" {
      + boot_disk_size         = (known after apply)
      + disk_store             = "datastore1"
      + guest_name             = "centos7-test"
      + guest_shutdown_timeout = (known after apply)
      + guest_startup_timeout  = (known after apply)
      + guestinfo              = {
          + "metadata"          = "base64text"
          + "metadata.encoding" = "gzip+base64"
          + "userdata"          = "base64text"
          + "userdata.encoding" = "gzip+base64"
        }
      + guestos                = (known after apply)
      + id                     = (known after apply)
      + ip_address             = (known after apply)
      + memsize                = "1024"
      + notes                  = (known after apply)
      + numvcpus               = (known after apply)
      + ovf_properties_timer   = (known after apply)
      + ovf_source             = "/root/create-and-deploy-esxi/output-packer-centos7-x86_64/packer-centos7-x86_64.ova"
      + power                  = "on"
      + resource_pool_name     = (known after apply)
      + virthwver              = (known after apply)

      + network_interfaces {
          + mac_address     = (known after apply)
          + nic_type        = (known after apply)
          + virtual_network = "VM Network"
        }
    }

Plan: 1 to add, 0 to change, 0 to destroy.

------------------------------------------------------------------------

Note: You didn't specify an "-out" parameter to save this plan, so Terraform
can't guarantee that exactly these actions will be performed if
"terraform apply" is subsequently run.

Končaj:

terraform apply

Če je vse opravljeno pravilno, bo v 2-3 minutah nameščen nov virtualni stroj iz predhodno izdelane slike.

Uporaba vsega tega je omejena le z vašo domišljijo.

Želel sem samo deliti najboljše prakse in prikazati glavne točke pri delu s temi izdelki.

Hvala za pozornost!

PS: Vesel bom konstruktivne kritike.

Vir: www.habr.com

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